[PATCH 02/17] lpfc: Rework locations of ndlp reference taking

James Smart
2020-11-15T19:27:16Z

[-- Attachment #1: Type: text/plain, Size: 61623 bytes --]

Now that the driver has gone to a normal ref interface (with no odd logic)
the discovery logic needs to be updated to reworked so that it properly
takes references when it should and give them up when it should.

Rework the driver for the following get/put model:
- Move gets to just before an IO is issued. Add gets for places where
an IO was issued without one.
- Ensure that failures from lpfc_nlp_get() are handled by the driver.
- Check and fix the placement of lpfc_nlp_puts relative to io completions.
Note: some of these paths may not release the reference on the exact io
completion as the reference is held as the code takes another step in
the discovery thread and which may cause another io to be issued.
- Rearrange some code for error processing and calling lpfc_nlp_put.
- Fix some places of incorrect reference freeing that was causing the
premature releasing of the structure.
- Nvmet plogi handling performs unreg_rpi's. The reference counts
were unbalanced resulting in premature node removal. In some cases
this caused loss of node discovery. Corrected the reftaking around
nvmet plogis.

Nodes that experience devloss now get released from the node list now that
there is a proper reference taking.

Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
---
drivers/scsi/lpfc/lpfc_bsg.c | 71 +--
drivers/scsi/lpfc/lpfc_ct.c | 56 ++-
drivers/scsi/lpfc/lpfc_disc.h | 3 +-
drivers/scsi/lpfc/lpfc_els.c | 693 +++++++++++++++++++----------
drivers/scsi/lpfc/lpfc_hbadisc.c | 12 +-
drivers/scsi/lpfc/lpfc_nportdisc.c | 28 +-
drivers/scsi/lpfc/lpfc_nvme.c | 13 +-
drivers/scsi/lpfc/lpfc_sli.c | 9 +-
8 files changed, 569 insertions(+), 316 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_bsg.c b/drivers/scsi/lpfc/lpfc_bsg.c
index b13e764b484f..e2f87a0d5c4f 100644
--- a/drivers/scsi/lpfc/lpfc_bsg.c
+++ b/drivers/scsi/lpfc/lpfc_bsg.c
@@ -329,7 +329,7 @@ lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba *phba,
spin_unlock_irqrestore(&phba->hbalock, flags);

iocb = &dd_data->context_un.iocb;
- ndlp = iocb->ndlp;
+ ndlp = iocb->cmdiocbq->context_un.ndlp;
rmp = iocb->rmp;
cmp = cmdiocbq->context2;
bmp = cmdiocbq->context3;
@@ -366,8 +366,8 @@ lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba *phba,
lpfc_free_bsg_buffers(phba, rmp);
lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
kfree(bmp);
- lpfc_sli_release_iocbq(phba, cmdiocbq);
lpfc_nlp_put(ndlp);
+ lpfc_sli_release_iocbq(phba, cmdiocbq);
kfree(dd_data);

/* Complete the job if the job is still active */
@@ -408,6 +408,9 @@ lpfc_bsg_send_mgmt_cmd(struct bsg_job *job)
/* in case no data is transferred */
bsg_reply->reply_payload_rcv_len = 0;

+ if (ndlp->nlp_flag & NLP_ELS_SND_MASK)
+ return -ENODEV;
+
/* allocate our bsg tracking structure */
dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
if (!dd_data) {
@@ -417,20 +420,10 @@ lpfc_bsg_send_mgmt_cmd(struct bsg_job *job)
goto no_dd_data;
}

- if (!lpfc_nlp_get(ndlp)) {
- rc = -ENODEV;
- goto no_ndlp;
- }
-
- if (ndlp->nlp_flag & NLP_ELS_SND_MASK) {
- rc = -ENODEV;
- goto free_ndlp;
- }
-
cmdiocbq = lpfc_sli_get_iocbq(phba);
if (!cmdiocbq) {
rc = -ENOMEM;
- goto free_ndlp;
+ goto free_dd;
}

cmd = &cmdiocbq->iocb;
@@ -496,11 +489,10 @@ lpfc_bsg_send_mgmt_cmd(struct bsg_job *job)
cmdiocbq->context1 = dd_data;
cmdiocbq->context2 = cmp;
cmdiocbq->context3 = bmp;
- cmdiocbq->context_un.ndlp = ndlp;
+
dd_data->type = TYPE_IOCB;
dd_data->set_job = job;
dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
- dd_data->context_un.iocb.ndlp = ndlp;
dd_data->context_un.iocb.rmp = rmp;
job->dd_data = dd_data;

@@ -514,8 +506,13 @@ lpfc_bsg_send_mgmt_cmd(struct bsg_job *job)
readl(phba->HCregaddr); /* flush */
}

- iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
+ cmdiocbq->context_un.ndlp = lpfc_nlp_get(ndlp);
+ if (!cmdiocbq->context_un.ndlp) {
+ rc = -ENODEV;
+ goto free_rmp;
+ }

+ iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
if (iocb_stat == IOCB_SUCCESS) {
spin_lock_irqsave(&phba->hbalock, flags);
/* make sure the I/O had not been completed yet */
@@ -532,7 +529,7 @@ lpfc_bsg_send_mgmt_cmd(struct bsg_job *job)
}

/* iocb failed so cleanup */
- job->dd_data = NULL;
+ lpfc_nlp_put(ndlp);

free_rmp:
lpfc_free_bsg_buffers(phba, rmp);
@@ -544,9 +541,7 @@ lpfc_bsg_send_mgmt_cmd(struct bsg_job *job)
kfree(bmp);
free_cmdiocbq:
lpfc_sli_release_iocbq(phba, cmdiocbq);
-free_ndlp:
- lpfc_nlp_put(ndlp);
-no_ndlp:
+free_dd:
kfree(dd_data);
no_dd_data:
/* make error code available to userspace */
@@ -640,8 +635,9 @@ lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba,
}
}

- lpfc_nlp_put(ndlp);
lpfc_els_free_iocb(phba, cmdiocbq);
+
+ lpfc_nlp_put(ndlp);
kfree(dd_data);

/* Complete the job if the job is still active */
@@ -718,15 +714,14 @@ lpfc_bsg_rport_els(struct bsg_job *job)
goto release_ndlp;
}

- rpi = ndlp->nlp_rpi;
-
/* Transfer the request payload to allocated command dma buffer */
-
sg_copy_to_buffer(job->request_payload.sg_list,
job->request_payload.sg_cnt,
((struct lpfc_dmabuf *)cmdiocbq->context2)->virt,
cmdsize);

+ rpi = ndlp->nlp_rpi;
+
if (phba->sli_rev == LPFC_SLI_REV4)
cmdiocbq->iocb.ulpContext = phba->sli4_hba.rpi_ids[rpi];
else
@@ -752,8 +747,13 @@ lpfc_bsg_rport_els(struct bsg_job *job)
readl(phba->HCregaddr); /* flush */
}

- rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
+ cmdiocbq->context1 = lpfc_nlp_get(ndlp);
+ if (!cmdiocbq->context1) {
+ rc = -EIO;
+ goto linkdown_err;
+ }

+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
if (rc == IOCB_SUCCESS) {
spin_lock_irqsave(&phba->hbalock, flags);
/* make sure the I/O had not been completed/released */
@@ -769,11 +769,9 @@ lpfc_bsg_rport_els(struct bsg_job *job)
rc = -EIO;
}

- /* iocb failed so cleanup */
- job->dd_data = NULL;
+ /* IO issue failed. Cleanup resources. */

linkdown_err:
- cmdiocbq->context1 = ndlp;
lpfc_els_free_iocb(phba, cmdiocbq);

release_ndlp:
@@ -1471,6 +1469,15 @@ lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct bsg_job *job, uint32_t tag,
unsigned long flags;
uint32_t creg_val;

+ ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID);
+ if (!ndlp) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
+ "2721 ndlp null for oxid %x SID %x\n",
+ phba->ct_ctx[tag].rxid,
+ phba->ct_ctx[tag].SID);
+ return IOCB_ERROR;
+ }
+
/* allocate our bsg tracking structure */
dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
if (!dd_data) {
@@ -1561,7 +1568,11 @@ lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct bsg_job *job, uint32_t tag,
dd_data->type = TYPE_IOCB;
dd_data->set_job = job;
dd_data->context_un.iocb.cmdiocbq = ctiocb;
- dd_data->context_un.iocb.ndlp = ndlp;
+ dd_data->context_un.iocb.ndlp = lpfc_nlp_get(ndlp);
+ if (!dd_data->context_un.iocb.ndlp) {
+ rc = -IOCB_ERROR;
+ goto issue_ct_rsp_exit;
+ }
dd_data->context_un.iocb.rmp = NULL;
job->dd_data = dd_data;

@@ -1576,7 +1587,6 @@ lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct bsg_job *job, uint32_t tag,
}

rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
-
if (rc == IOCB_SUCCESS) {
spin_lock_irqsave(&phba->hbalock, flags);
/* make sure the I/O had not been completed/released */
@@ -1590,6 +1600,7 @@ lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct bsg_job *job, uint32_t tag,

/* iocb failed so cleanup */
job->dd_data = NULL;
+ lpfc_nlp_put(ndlp);

issue_ct_rsp_exit:
lpfc_sli_release_iocbq(phba, ctiocb);
diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index 32f5d8951b8f..ba5b1c42b8a6 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -548,10 +548,8 @@ lpfc_ct_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *ctiocb)
{
struct lpfc_dmabuf *buf_ptr;

- if (ctiocb->context_un.ndlp) {
- lpfc_nlp_put(ctiocb->context_un.ndlp);
- ctiocb->context_un.ndlp = NULL;
- }
+ /* IO job is complete so context is now invalid*/
+ ctiocb->context_un.ndlp = NULL;
if (ctiocb->context1) {
buf_ptr = (struct lpfc_dmabuf *) ctiocb->context1;
lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
@@ -618,7 +616,6 @@ lpfc_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
/* Save for completion so we can release these resources */
geniocb->context1 = (uint8_t *) inp;
geniocb->context2 = (uint8_t *) outp;
- geniocb->context_un.ndlp = lpfc_nlp_get(ndlp);

/* Fill in payload, bp points to frame payload */
icmd->ulpCommand = CMD_GEN_REQUEST64_CR;
@@ -657,16 +654,21 @@ lpfc_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
geniocb->drvrTimeout = icmd->ulpTimeout + LPFC_DRVR_TIMEOUT;
geniocb->vport = vport;
geniocb->retry = retry;
+ geniocb->context_un.ndlp = lpfc_nlp_get(ndlp);
+ if (!geniocb->context_un.ndlp)
+ goto out;
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, geniocb, 0);

if (rc == IOCB_ERROR) {
geniocb->context_un.ndlp = NULL;
lpfc_nlp_put(ndlp);
- lpfc_sli_release_iocbq(phba, geniocb);
- return 1;
+ goto out;
}

return 0;
+out:
+ lpfc_sli_release_iocbq(phba, geniocb);
+ return 1;
}

/*
@@ -1134,8 +1136,8 @@ lpfc_cmpl_ct_cmd_gid_ft(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
lpfc_disc_start(vport);
}
out:
- cmdiocb->context_un.ndlp = ndlp; /* Now restore ndlp for free */
lpfc_ct_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
return;
}

@@ -1341,8 +1343,8 @@ lpfc_cmpl_ct_cmd_gid_pt(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
lpfc_disc_start(vport);
}
out:
- cmdiocb->context_un.ndlp = ndlp; /* Now restore ndlp for free */
lpfc_ct_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
}

static void
@@ -1357,7 +1359,7 @@ lpfc_cmpl_ct_cmd_gff_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_sli_ct_request *CTrsp;
int did, rc, retry;
uint8_t fbits;
- struct lpfc_nodelist *ndlp;
+ struct lpfc_nodelist *ndlp = NULL, *free_ndlp = NULL;

did = ((struct lpfc_sli_ct_request *) inp->virt)->un.gff.PortId;
did = be32_to_cpu(did);
@@ -1423,7 +1425,9 @@ lpfc_cmpl_ct_cmd_gff_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
cmdiocb->retry, did);
if (rc == 0) {
/* success */
+ free_ndlp = cmdiocb->context_un.ndlp;
lpfc_ct_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(free_ndlp);
return;
}
}
@@ -1476,7 +1480,10 @@ lpfc_cmpl_ct_cmd_gff_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
}
lpfc_disc_start(vport);
}
+
+ free_ndlp = cmdiocb->context_un.ndlp;
lpfc_ct_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(free_ndlp);
return;
}

@@ -1490,7 +1497,8 @@ lpfc_cmpl_ct_cmd_gft_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_dmabuf *outp = (struct lpfc_dmabuf *)cmdiocb->context2;
struct lpfc_sli_ct_request *CTrsp;
int did;
- struct lpfc_nodelist *ndlp;
+ struct lpfc_nodelist *ndlp = NULL;
+ struct lpfc_nodelist *ns_ndlp = NULL;
uint32_t fc4_data_0, fc4_data_1;

did = ((struct lpfc_sli_ct_request *)inp->virt)->un.gft.PortId;
@@ -1500,6 +1508,9 @@ lpfc_cmpl_ct_cmd_gft_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
"GFT_ID cmpl: status:x%x/x%x did:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4], did);

+ /* Preserve the nameserver node to release the reference. */
+ ns_ndlp = cmdiocb->context_un.ndlp;
+
if (irsp->ulpStatus == IOSTAT_SUCCESS) {
/* Good status, continue checking */
CTrsp = (struct lpfc_sli_ct_request *)outp->virt;
@@ -1515,6 +1526,10 @@ lpfc_cmpl_ct_cmd_gft_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
(fc4_data_1 & LPFC_FC4_TYPE_BITMASK) ?
"NVME" : " ");

+ /* Lookup the NPort_ID queried in the GFT_ID and find the
+ * driver's local node. It's an error if the driver
+ * doesn't have one.
+ */
ndlp = lpfc_findnode_did(vport, did);
if (ndlp) {
/* The bitmask value for FCP and NVME FCP types is
@@ -1560,6 +1575,7 @@ lpfc_cmpl_ct_cmd_gft_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
"3065 GFT_ID failed x%08x\n", irsp->ulpStatus);

lpfc_ct_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ns_ndlp);
}

static void
@@ -1629,8 +1645,8 @@ lpfc_cmpl_ct(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
}

out:
- cmdiocb->context_un.ndlp = ndlp; /* Now restore ndlp for free */
lpfc_ct_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
return;
}

@@ -2113,11 +2129,6 @@ lpfc_ns_cmd(struct lpfc_vport *vport, int cmdcode,
}
rc=6;

- /* Decrement ndlp reference count to release ndlp reference held
- * for the failed command's callback function.
- */
- lpfc_nlp_put(ndlp);
-
ns_cmd_free_bmpvirt:
lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
ns_cmd_free_bmp:
@@ -2154,7 +2165,7 @@ lpfc_cmpl_ct_disc_fdmi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
uint16_t fdmi_cmd = CTcmd->CommandResponse.bits.CmdRsp;
uint16_t fdmi_rsp = CTrsp->CommandResponse.bits.CmdRsp;
IOCB_t *irsp = &rspiocb->iocb;
- struct lpfc_nodelist *ndlp;
+ struct lpfc_nodelist *ndlp, *free_ndlp = NULL;
uint32_t latt, cmd, err;

latt = lpfc_els_chk_latt(vport);
@@ -2200,7 +2211,10 @@ lpfc_cmpl_ct_disc_fdmi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
be16_to_cpu(fdmi_cmd), latt, irsp->ulpStatus,
irsp->un.ulpWord[4]);
}
+
+ free_ndlp = cmdiocb->context_un.ndlp;
lpfc_ct_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(free_ndlp);

ndlp = lpfc_findnode_did(vport, FDMI_DID);
if (!ndlp)
@@ -3582,12 +3596,6 @@ lpfc_fdmi_cmd(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
if (!lpfc_ct_cmd(vport, mp, bmp, ndlp, cmpl, rsp_size, 0))
return 0;

- /*
- * Decrement ndlp reference count to release ndlp reference held
- * for the failed command's callback function.
- */
- lpfc_nlp_put(ndlp);
-
fdmi_cmd_free_bmpvirt:
lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
fdmi_cmd_free_bmp:
diff --git a/drivers/scsi/lpfc/lpfc_disc.h b/drivers/scsi/lpfc/lpfc_disc.h
index f8ab001e4f0d..09d4ec2a20db 100644
--- a/drivers/scsi/lpfc/lpfc_disc.h
+++ b/drivers/scsi/lpfc/lpfc_disc.h
@@ -166,8 +166,7 @@ struct lpfc_node_rrq {
#define NLP_NVMET_RECOV 0x00001000 /* NVMET auditing node for recovery. */
#define NLP_FCP_PRLI_RJT 0x00002000 /* Rport does not support FCP PRLI. */
#define NLP_UNREG_INP 0x00008000 /* UNREG_RPI cmd is in progress */
-#define NLP_DEFER_RM 0x00010000 /* Remove this ndlp if no longer used */
-#define NLP_DROPPED 0x00000008 /* Init ref count has been dropped */
+#define NLP_DROPPED 0x00010000 /* Init ref count has been dropped */
#define NLP_DELAY_TMO 0x00020000 /* delay timeout is running for node */
#define NLP_NPR_2B_DISC 0x00040000 /* node is included in num_disc_nodes */
#define NLP_RCV_PLOGI 0x00080000 /* Rcv'ed PLOGI from remote system */
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 9cf0e9d55cdf..2d7a4a920ba4 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -300,10 +300,6 @@ lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
bpl->tus.w = le32_to_cpu(bpl->tus.w);
}

- /* prevent preparing iocb with NULL ndlp reference */
- elsiocb->context1 = lpfc_nlp_get(ndlp);
- if (!elsiocb->context1)
- goto els_iocb_free_pbuf_exit;
elsiocb->context2 = pcmd;
elsiocb->context3 = pbuflist;
elsiocb->retry = retry;
@@ -418,10 +414,14 @@ lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
* for the callback routine.
*/
mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!mbox->ctx_ndlp) {
+ err = 6;
+ goto fail_no_ndlp;
+ }

rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
- err = 6;
+ err = 7;
goto fail_issue_reg_login;
}

@@ -432,6 +432,7 @@ lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
* for the failed mbox command.
*/
lpfc_nlp_put(ndlp);
+fail_no_ndlp:
mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
@@ -1088,6 +1089,7 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
/* Do not register VFI if the driver aborted FLOGI */
if (!lpfc_error_lost_link(irsp))
lpfc_issue_reg_vfi(vport);
+
lpfc_nlp_put(ndlp);
goto out;
}
@@ -1149,6 +1151,7 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
phba->fcf.current_rec.fabric_name[5],
phba->fcf.current_rec.fabric_name[6],
phba->fcf.current_rec.fabric_name[7]);
+
lpfc_nlp_put(ndlp);
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
@@ -1180,7 +1183,6 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
spin_unlock_irq(&phba->hbalock);

lpfc_nlp_put(ndlp);
-
if (!lpfc_error_lost_link(irsp)) {
/* FLOGI failed, so just use loop map to make discovery list */
lpfc_disc_list_loopmap(vport);
@@ -1198,6 +1200,7 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
}
out:
lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
}

/**
@@ -1337,7 +1340,13 @@ lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
"Issue FLOGI: opt:x%x",
phba->sli3_options, 0, 0);

+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto out;
+
rc = lpfc_issue_fabric_iocb(phba, elsiocb);
+ if (rc == IOCB_ERROR)
+ lpfc_nlp_put(ndlp);

phba->hba_flag |= HBA_FLOGI_ISSUED;

@@ -1367,11 +1376,11 @@ lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
vport->fc_myDID = did;
}

- if (rc == IOCB_ERROR) {
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
- return 0;
+ if (!rc)
+ return 0;
+ out:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -1922,7 +1931,9 @@ lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
out:
if (rrq)
lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
+
lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
return;
}
/**
@@ -1952,7 +1963,7 @@ lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_vport *vport = cmdiocb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
IOCB_t *irsp;
- struct lpfc_nodelist *ndlp;
+ struct lpfc_nodelist *ndlp, *free_ndlp;
struct lpfc_dmabuf *prsp;
int disc;

@@ -2049,7 +2060,15 @@ lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
}

out:
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
+ "PLOGI Cmpl PUT: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+
+ /* Release the reference on the original IO request. */
+ free_ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
+
lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(free_ndlp);
return;
}

@@ -2161,13 +2180,24 @@ lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)

phba->fc_stat.elsXmitPLOGI++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
- ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);

- if (ret == IOCB_ERROR) {
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue PLOGI: did:x%x refcnt %d",
+ did, kref_read(&ndlp->kref), 0);
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto io_err;
+
+ ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (ret) {
+ lpfc_nlp_put(ndlp);
+ goto io_err;
}
return 0;
+
+ io_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -2267,6 +2297,7 @@ lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,

out:
lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
return;
}

@@ -2295,6 +2326,7 @@ int
lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint8_t retry)
{
+ int rc = 0;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
PRLI *npr;
@@ -2430,10 +2462,6 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
local_nlp_type &= ~NLP_FC4_NVME;
}

- lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
- "Issue PRLI: did:x%x",
- ndlp->nlp_DID, 0, 0);
-
phba->fc_stat.elsXmitPRLI++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
spin_lock_irq(shost->host_lock);
@@ -2446,14 +2474,17 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
vport->fc_prli_sent++;
ndlp->fc4_prli_sent++;
spin_unlock_irq(shost->host_lock);
- if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
- IOCB_ERROR) {
- spin_lock_irq(shost->host_lock);
- ndlp->nlp_flag &= ~NLP_PRLI_SND;
- spin_unlock_irq(shost->host_lock);
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue PRLI: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto io_err;
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR)
+ goto node_err;

/* The driver supports 2 FC4 types. Make sure
@@ -2462,8 +2493,17 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
if (phba->sli_rev == LPFC_SLI_REV4 &&
local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME))
goto send_next_prli;
+ else
+ return 0;

- return 0;
+ node_err:
+ lpfc_nlp_put(ndlp);
+ io_err:
+ spin_lock_irq(shost->host_lock);
+ ndlp->nlp_flag &= ~NLP_PRLI_SND;
+ spin_unlock_irq(shost->host_lock);
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -2672,6 +2712,7 @@ lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
lpfc_more_adisc(vport);
out:
lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
return;
}

@@ -2699,6 +2740,7 @@ int
lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint8_t retry)
{
+ int rc = 0;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
ADISC *ap;
@@ -2725,24 +2767,31 @@ lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
ap->DID = be32_to_cpu(vport->fc_myDID);

- lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
- "Issue ADISC: did:x%x",
- ndlp->nlp_DID, 0, 0);
-
phba->fc_stat.elsXmitADISC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_ADISC_SND;
spin_unlock_irq(shost->host_lock);
- if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
- IOCB_ERROR) {
- spin_lock_irq(shost->host_lock);
- ndlp->nlp_flag &= ~NLP_ADISC_SND;
- spin_unlock_irq(shost->host_lock);
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue ADISC: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR)
+ goto io_err;
return 0;
+
+ io_err:
+ lpfc_nlp_put(ndlp);
+ node_err:
+ spin_lock_irq(shost->host_lock);
+ ndlp->nlp_flag &= ~NLP_ADISC_SND;
+ spin_unlock_irq(shost->host_lock);
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -2827,7 +2876,10 @@ lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);

out:
+ /* Driver is done with the IO. */
lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+
/* If we are in pt2pt mode, we could rcv new S_ID on PLOGI */
if ((vport->fc_flag & FC_PT2PT) &&
!(vport->fc_flag & FC_PT2PT_PLOGI)) {
@@ -2932,30 +2984,37 @@ lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
pcmd += sizeof(uint32_t);
memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));

- lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
- "Issue LOGO: did:x%x",
- ndlp->nlp_DID, 0, 0);
-
phba->fc_stat.elsXmitLOGO++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_LOGO_SND;
ndlp->nlp_flag &= ~NLP_ISSUE_LOGO;
spin_unlock_irq(shost->host_lock);
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue LOGO: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
- if (rc == IOCB_ERROR) {
- spin_lock_irq(shost->host_lock);
- ndlp->nlp_flag &= ~NLP_LOGO_SND;
- spin_unlock_irq(shost->host_lock);
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
+ if (rc == IOCB_ERROR)
+ goto io_err;

spin_lock_irq(shost->host_lock);
ndlp->nlp_prev_state = ndlp->nlp_state;
spin_unlock_irq(shost->host_lock);
lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
return 0;
+
+ io_err:
+ lpfc_nlp_put(ndlp);
+ node_err:
+ spin_lock_irq(shost->host_lock);
+ ndlp->nlp_flag &= ~NLP_LOGO_SND;
+ spin_unlock_irq(shost->host_lock);
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -2978,6 +3037,7 @@ lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_vport *vport = cmdiocb->vport;
+ struct lpfc_nodelist *free_ndlp;
IOCB_t *irsp;

irsp = &rspiocb->iocb;
@@ -2995,7 +3055,11 @@ lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,

/* Check to see if link went down during discovery */
lpfc_els_chk_latt(vport);
+
+ free_ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
+
lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(free_ndlp);
}

/**
@@ -3019,6 +3083,7 @@ lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_dmabuf *pcmd, *prsp;
u32 *pdata;
u32 cmd;
+ struct lpfc_nodelist *ndlp = cmdiocb->context1;

irsp = &rspiocb->iocb;

@@ -3097,6 +3162,7 @@ lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
/* Check to see if link went down during discovery */
lpfc_els_chk_latt(vport);
lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
return;
}

@@ -3124,6 +3190,7 @@ lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
int
lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry)
{
+ int rc = 0;
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
@@ -3143,13 +3210,8 @@ lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry)
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
ndlp->nlp_DID, ELS_CMD_SCR);

- if (!elsiocb) {
- /* This will trigger the release of the node just
- * allocated
- */
- lpfc_nlp_put(ndlp);
+ if (!elsiocb)
return 1;
- }

pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

@@ -3166,22 +3228,26 @@ lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry)

phba->fc_stat.elsXmitSCR++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_disc_cmd;
- if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
- IOCB_ERROR) {
- /* The additional lpfc_nlp_put will cause the following
- * lpfc_els_free_iocb routine to trigger the rlease of
- * the node.
- */
- lpfc_nlp_put(ndlp);
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
- /* This will cause the callback-function lpfc_cmpl_els_cmd to
- * trigger the release of node.
- */
- if (!(vport->fc_flag & FC_PT2PT))
- lpfc_nlp_put(ndlp);
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue SCR: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR)
+ goto io_err;
+
+ /* Keep the ndlp just in case RDF is being sent */
return 0;
+
+ io_err:
+ lpfc_nlp_put(ndlp);
+ node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -3207,6 +3273,7 @@ lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry)
int
lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry)
{
+ int rc = 0;
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *elsiocb;
struct lpfc_nodelist *ndlp;
@@ -3243,13 +3310,8 @@ lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry)
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
ndlp->nlp_DID, ELS_CMD_RSCN_XMT);

- if (!elsiocb) {
- /* This will trigger the release of the node just
- * allocated
- */
- lpfc_nlp_put(ndlp);
+ if (!elsiocb)
return 1;
- }

event = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;

@@ -3264,35 +3326,31 @@ lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry)
event->portid.rscn_fid[1] = (nportid & 0x0000FF00) >> 8;
event->portid.rscn_fid[2] = nportid & 0x000000FF;

+ phba->fc_stat.elsXmitRSCN++;
+ elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;
+
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Issue RSCN: did:x%x",
ndlp->nlp_DID, 0, 0);

- phba->fc_stat.elsXmitRSCN++;
- elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
- if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
- IOCB_ERROR) {
- /* The additional lpfc_nlp_put will cause the following
- * lpfc_els_free_iocb routine to trigger the rlease of
- * the node.
- */
- lpfc_nlp_put(ndlp);
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
-
- /* Only keep the ndlp if RDF is being sent */
- if (!phba->cfg_enable_mi ||
- phba->sli4_hba.pc_sli4_params.mi_ver < LPFC_MIB3_SUPPORT)
- return 0;
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR)
+ goto io_err;

/* This will cause the callback-function lpfc_cmpl_els_cmd to
* trigger the release of node.
*/
if (!(vport->fc_flag & FC_PT2PT))
lpfc_nlp_put(ndlp);
-
return 0;
+io_err:
+ lpfc_nlp_put(ndlp);
+node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -3320,6 +3378,7 @@ lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry)
static int
lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
{
+ int rc = 0;
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *elsiocb;
FARP *fp;
@@ -3341,13 +3400,8 @@ lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)

elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
ndlp->nlp_DID, ELS_CMD_RNID);
- if (!elsiocb) {
- /* This will trigger the release of the node just
- * allocated
- */
- lpfc_nlp_put(ndlp);
+ if (!elsiocb)
return 1;
- }

pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

@@ -3379,8 +3433,14 @@ lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)

phba->fc_stat.elsXmitFARPR++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
- if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
- IOCB_ERROR) {
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
/* The additional lpfc_nlp_put will cause the following
* lpfc_els_free_iocb routine to trigger the release of
* the node.
@@ -3421,6 +3481,7 @@ lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry)
struct lpfc_els_rdf_req *prdf;
struct lpfc_nodelist *ndlp;
uint16_t cmdsize;
+ int rc;

cmdsize = sizeof(*prdf);

@@ -3440,13 +3501,8 @@ lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry)

elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
ndlp->nlp_DID, ELS_CMD_RDF);
- if (!elsiocb) {
- /* This will trigger the release of the node just
- * allocated
- */
- lpfc_nlp_put(ndlp);
+ if (!elsiocb)
return -ENOMEM;
- }

/* Configure the payload for the supported FPIN events. */
prdf = (struct lpfc_els_rdf_req *)
@@ -3464,31 +3520,29 @@ lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry)
prdf->reg_d1.desc_tags[2] = cpu_to_be32(ELS_DTAG_PEER_CONGEST);
prdf->reg_d1.desc_tags[3] = cpu_to_be32(ELS_DTAG_CONGESTION);

- lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
- "Issue RDF: did:x%x",
- ndlp->nlp_DID, 0, 0);
-
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"6444 Xmit RDF to remote NPORT x%x\n",
ndlp->nlp_DID);

elsiocb->iocb_cmpl = lpfc_cmpl_els_disc_cmd;
- if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
- IOCB_ERROR) {
- /* The additional lpfc_nlp_put will cause the following
- * lpfc_els_free_iocb routine to trigger the rlease of
- * the node.
- */
- lpfc_nlp_put(ndlp);
- lpfc_els_free_iocb(phba, elsiocb);
- return -EIO;
- }
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;

- /* An RDF was issued - this put ensures the ndlp is cleaned up
- * when the RDF completes.
- */
- lpfc_nlp_put(ndlp);
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue RDF: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR)
+ goto io_err;
return 0;
+
+ io_err:
+ lpfc_nlp_put(ndlp);
+ node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return -EIO;
}

/**
@@ -4256,27 +4310,10 @@ int
lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
{
struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
- struct lpfc_nodelist *ndlp;

- ndlp = (struct lpfc_nodelist *)elsiocb->context1;
- if (ndlp) {
- if (ndlp->nlp_flag & NLP_DEFER_RM) {
- lpfc_nlp_put(ndlp);
+ /* The IO job is complete. Clear the context1 data. */
+ elsiocb->context1 = NULL;

- /* If the ndlp is not being used by another discovery
- * thread, free it.
- */
- if (!lpfc_nlp_not_used(ndlp)) {
- /* If ndlp is being used by another discovery
- * thread, just clear NLP_DEFER_RM
- */
- ndlp->nlp_flag &= ~NLP_DEFER_RM;
- }
- }
- else
- lpfc_nlp_put(ndlp);
- elsiocb->context1 = NULL;
- }
/* context2 = cmd, context2->next = rsp, context3 = bpl */
if (elsiocb->context2) {
if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) {
@@ -4376,6 +4413,7 @@ lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
* At this point, the driver is done so release the IOCB
*/
lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
}

/**
@@ -4506,32 +4544,38 @@ lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
if (mbox) {
- if ((rspiocb->iocb.ulpStatus == 0)
- && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
+ if ((rspiocb->iocb.ulpStatus == 0) &&
+ (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
if (!lpfc_unreg_rpi(vport, ndlp) &&
- (!(vport->fc_flag & FC_PT2PT)) &&
- (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
- ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE)) {
- lpfc_printf_vlog(vport, KERN_INFO,
- LOG_DISCOVERY,
- "0314 PLOGI recov DID x%x "
- "Data: x%x x%x x%x\n",
- ndlp->nlp_DID, ndlp->nlp_state,
- ndlp->nlp_rpi, ndlp->nlp_flag);
- mp = mbox->ctx_buf;
- if (mp) {
- lpfc_mbuf_free(phba, mp->virt,
- mp->phys);
- kfree(mp);
+ (!(vport->fc_flag & FC_PT2PT))) {
+ if (ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) {
+ lpfc_printf_vlog(vport, KERN_INFO,
+ LOG_DISCOVERY,
+ "0314 PLOGI recov "
+ "DID x%x "
+ "Data: x%x x%x x%x\n",
+ ndlp->nlp_DID,
+ ndlp->nlp_state,
+ ndlp->nlp_rpi,
+ ndlp->nlp_flag);
+ mp = mbox->ctx_buf;
+ if (mp) {
+ lpfc_mbuf_free(phba, mp->virt,
+ mp->phys);
+ kfree(mp);
+ }
+ mempool_free(mbox, phba->mbox_mem_pool);
+ goto out;
}
- mempool_free(mbox, phba->mbox_mem_pool);
- goto out;
}

/* Increment reference count to ndlp to hold the
* reference to ndlp for the callback function.
*/
mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!mbox->ctx_ndlp)
+ goto out;
+
mbox->vport = vport;
if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
@@ -4615,7 +4659,9 @@ lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,

}

+ /* Release the originating IO reference. */
lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
return;
}

@@ -4785,12 +4831,29 @@ lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
}

phba->fc_stat.elsXmitACC++;
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;
+
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
- if (rc == IOCB_ERROR) {
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
+ if (rc == IOCB_ERROR)
+ goto io_err;
+
+ /* Xmit ELS ACC response tag <ulpIoTag> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, "
+ "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x "
+ "RPI: x%x, fc_flag x%x\n",
+ rc, elsiocb->iotag, elsiocb->sli4_xritag,
+ ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+ ndlp->nlp_rpi, vport->fc_flag);
return 0;
+
+io_err:
+ lpfc_nlp_put(ndlp);
+node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -4820,13 +4883,13 @@ lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
LPFC_MBOXQ_t *mbox)
{
+ int rc;
struct lpfc_hba *phba = vport->phba;
IOCB_t *icmd;
IOCB_t *oldcmd;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
- int rc;

cmdsize = 2 * sizeof(uint32_t);
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
@@ -4861,13 +4924,21 @@ lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,

phba->fc_stat.elsXmitLSRJT++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;
+
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR)
+ goto io_err;

- if (rc == IOCB_ERROR) {
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
return 0;
+
+ io_err:
+ lpfc_nlp_put(ndlp);
+ node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -4931,16 +5002,18 @@ lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
ap->DID = be32_to_cpu(vport->fc_myDID);

lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
- "Issue ACC ADISC: did:x%x flg:x%x",
- ndlp->nlp_DID, ndlp->nlp_flag, 0);
+ "Issue ACC ADISC: did:x%x flg:x%x refcnt %d",
+ ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));

phba->fc_stat.elsXmitACC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;
+
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
- if (rc == IOCB_ERROR) {
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
+ if (rc == IOCB_ERROR)
+ goto io_err;

/* Xmit ELS ACC response tag <ulpIoTag> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
@@ -4951,6 +5024,12 @@ lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi, vport->fc_flag);
return 0;
+
+io_err:
+ lpfc_nlp_put(ndlp);
+node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -5098,18 +5177,25 @@ lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
ndlp->nlp_DID);

lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
- "Issue ACC PRLI: did:x%x flg:x%x",
- ndlp->nlp_DID, ndlp->nlp_flag, 0);
+ "Issue ACC PRLI: did:x%x flg:x%x",
+ ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));

phba->fc_stat.elsXmitACC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;

rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
- if (rc == IOCB_ERROR) {
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
+ if (rc == IOCB_ERROR)
+ goto io_err;
return 0;
+
+ io_err:
+ lpfc_nlp_put(ndlp);
+ node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -5198,18 +5284,26 @@ lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
}

lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
- "Issue ACC RNID: did:x%x flg:x%x",
- ndlp->nlp_DID, ndlp->nlp_flag, 0);
+ "Issue ACC RNID: did:x%x flg:x%x refcnt %d",
+ ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));

phba->fc_stat.elsXmitACC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;

rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
- if (rc == IOCB_ERROR) {
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
+ if (rc == IOCB_ERROR)
+ goto io_err;
+
return 0;
+
+ io_err:
+ lpfc_nlp_put(ndlp);
+ node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -5305,18 +5399,25 @@ lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data,
memcpy(pcmd, data, cmdsize - sizeof(uint32_t));

lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
- "Issue ACC ECHO: did:x%x flg:x%x",
- ndlp->nlp_DID, ndlp->nlp_flag, 0);
+ "Issue ACC ECHO: did:x%x flg:x%x refcnt %d",
+ ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));

phba->fc_stat.elsXmitACC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;

rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
- if (rc == IOCB_ERROR) {
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
+ if (rc == IOCB_ERROR)
+ goto io_err;
return 0;
+
+ io_err:
+ lpfc_nlp_put(ndlp);
+ node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -5879,7 +5980,6 @@ lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context,
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize,
lpfc_max_els_tries, rdp_context->ndlp,
rdp_context->ndlp->nlp_DID, ELS_CMD_ACC);
- lpfc_nlp_put(ndlp);
if (!elsiocb)
goto free_rdp_context;

@@ -5953,18 +6053,24 @@ lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context,
bpl->tus.w = le32_to_cpu(bpl->tus.w);

phba->fc_stat.elsXmitACC++;
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ goto free_rdp_context;
+ }
+
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
- if (rc == IOCB_ERROR)
+ if (rc == IOCB_ERROR) {
+ lpfc_nlp_put(ndlp);
lpfc_els_free_iocb(phba, elsiocb);
+ }

- kfree(rdp_context);
+ goto free_rdp_context;

- return;
error:
cmdsize = 2 * sizeof(uint32_t);
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries,
ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
- lpfc_nlp_put(ndlp);
if (!elsiocb)
goto free_rdp_context;

@@ -5979,11 +6085,23 @@ lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context,

phba->fc_stat.elsXmitLSRJT++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
- rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ goto free_rdp_context;
+ }

- if (rc == IOCB_ERROR)
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_nlp_put(ndlp);
lpfc_els_free_iocb(phba, elsiocb);
+ }
+
free_rdp_context:
+ /* This reference put is for the original unsolicited RDP. If the
+ * iocb prep failed, there is no reference to remove.
+ */
+ lpfc_nlp_put(ndlp);
kfree(rdp_context);
}

@@ -6087,6 +6205,11 @@ lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,

cmd = &cmdiocb->iocb;
rdp_context->ndlp = lpfc_nlp_get(ndlp);
+ if (!rdp_context->ndlp) {
+ kfree(rdp_context);
+ rjt_err = LSRJT_UNABLE_TPC;
+ goto error;
+ }
rdp_context->ox_id = cmd->unsli3.rcvsli3.ox_id;
rdp_context->rx_id = cmd->ulpContext;
rdp_context->cmpl = lpfc_els_rdp_cmpl;
@@ -6181,10 +6304,19 @@ lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
lcb_res->lcb_duration = lcb_context->duration;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitACC++;
+
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;
+
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
- if (rc == IOCB_ERROR)
- lpfc_els_free_iocb(phba, elsiocb);
+ if (!rc)
+ goto out;

+ lpfc_nlp_put(ndlp);
+ node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ out:
kfree(lcb_context);
return;

@@ -6211,9 +6343,17 @@ lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)

elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitLSRJT++;
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ goto free_lcb_context;
+ }
+
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
- if (rc == IOCB_ERROR)
+ if (rc == IOCB_ERROR) {
+ lpfc_nlp_put(ndlp);
lpfc_els_free_iocb(phba, elsiocb);
+ }
free_lcb_context:
kfree(lcb_context);
}
@@ -6313,7 +6453,7 @@ lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
uint8_t *lp;
struct fc_lcb_request_frame *beacon;
struct lpfc_lcb_context *lcb_context;
- uint8_t state, rjt_err;
+ u8 state, rjt_err = 0;
struct ls_rjt stat;

pcmd = (struct lpfc_dmabuf *)cmdiocb->context2;
@@ -6359,6 +6499,11 @@ lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
lcb_context->ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id;
lcb_context->rx_id = cmdiocb->iocb.ulpContext;
lcb_context->ndlp = lpfc_nlp_get(ndlp);
+ if (!lcb_context->ndlp) {
+ rjt_err = LSRJT_UNABLE_TPC;
+ goto rjt;
+ }
+
if (lpfc_sli4_set_beacon(vport, lcb_context, state)) {
lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_TRACE_EVENT,
"0193 failed to send mail box");
@@ -7208,6 +7353,7 @@ lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
static void
lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
+ int rc = 0;
MAILBOX_t *mb;
IOCB_t *icmd;
struct RLS_RSP *rls_rsp;
@@ -7269,8 +7415,19 @@ lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
ndlp->nlp_rpi);
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitACC++;
- if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
- lpfc_els_free_iocb(phba, elsiocb);
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR)
+ goto io_err;
+ return;
+
+ io_err:
+ lpfc_nlp_put(ndlp);
+ node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
}

/**
@@ -7311,6 +7468,8 @@ lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) |
cmdiocb->iocb.ulpContext)); /* rx_id */
mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!mbox->ctx_ndlp)
+ goto node_err;
mbox->vport = vport;
mbox->mbox_cmpl = lpfc_els_rsp_rls_acc;
if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
@@ -7321,6 +7480,7 @@ lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
* command.
*/
lpfc_nlp_put(ndlp);
+node_err:
mempool_free(mbox, phba->mbox_mem_pool);
}
reject_out:
@@ -7358,6 +7518,7 @@ static int
lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
+ int rc = 0;
struct lpfc_hba *phba = vport->phba;
struct ls_rjt stat;
struct RTV_RSP *rtv_rsp;
@@ -7407,8 +7568,17 @@ lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitACC++;
- if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 0;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_nlp_put(ndlp);
lpfc_els_free_iocb(phba, elsiocb);
+ }
return 0;

reject_out:
@@ -7477,13 +7647,20 @@ lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
did, rrq->xritag, rrq->rxid);
elsiocb->context_un.rrq = rrq;
elsiocb->iocb_cmpl = lpfc_cmpl_els_rrq;
- ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;

- if (ret == IOCB_ERROR) {
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
+ ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (ret == IOCB_ERROR)
+ goto io_err;
return 0;
+
+ io_err:
+ lpfc_nlp_put(ndlp);
+ node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -7536,6 +7713,7 @@ static int
lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
{
+ int rc = 0;
struct lpfc_hba *phba = vport->phba;
IOCB_t *icmd, *oldcmd;
RPL_RSP rpl_rsp;
@@ -7577,12 +7755,20 @@ lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
ndlp->nlp_rpi);
elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
phba->fc_stat.elsXmitACC++;
- if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
- IOCB_ERROR) {
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR)
+ goto io_err;
return 0;
+
+ io_err:
+ lpfc_nlp_put(ndlp);
+ node_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -8444,6 +8630,8 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
spin_unlock_irq(shost->host_lock);

elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto dropit;
elsiocb->vport = vport;

if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
@@ -8755,7 +8943,10 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
stat.un.b.lsRjtRsnCode = rjt_err;
stat.un.b.lsRjtRsnCodeExp = rjt_exp;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
- NULL);
+ NULL);
+ /* Remove the reference from above for new nodes. */
+ if (newnode)
+ lpfc_nlp_put(ndlp);
}

lpfc_nlp_put(elsiocb->context1);
@@ -9108,6 +9299,11 @@ lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
lpfc_reg_vpi(vport, mbox);
mbox->vport = vport;
mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!mbox->ctx_ndlp) {
+ mempool_free(mbox, phba->mbox_mem_pool);
+ goto mbox_err_exit;
+ }
+
mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
== MBX_NOT_FINISHED) {
@@ -9360,9 +9556,9 @@ lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
/* Cancel discovery timer */
lpfc_can_disctmo(vport);
- lpfc_nlp_put(ndlp);
out:
lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
}

/**
@@ -9455,16 +9651,25 @@ lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
"Issue FDISC: did:x%x",
did, 0, 0);

+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto err_out;
+
rc = lpfc_issue_fabric_iocb(phba, elsiocb);
if (rc == IOCB_ERROR) {
- lpfc_els_free_iocb(phba, elsiocb);
- lpfc_vport_set_state(vport, FC_VPORT_FAILED);
- lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
- "0256 Issue FDISC: Cannot send IOCB\n");
- return 1;
+ lpfc_nlp_put(ndlp);
+ goto err_out;
}
+
lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
return 0;
+
+ err_out:
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_vport_set_state(vport, FC_VPORT_FAILED);
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0256 Issue FDISC: Cannot send IOCB\n");
+ return 1;
}

/**
@@ -9496,6 +9701,7 @@ lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
"LOGO npiv cmpl: status:x%x/x%x did:x%x",
irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID);

+ lpfc_nlp_put(ndlp);
lpfc_els_free_iocb(phba, cmdiocb);
vport->unreg_vpi_cmpl = VPORT_ERROR;

@@ -9516,6 +9722,7 @@ lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
}
+ lpfc_nlp_put(ndlp);
}

/**
@@ -9537,6 +9744,7 @@ lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
int
lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
+ int rc = 0;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *elsiocb;
@@ -9566,15 +9774,22 @@ lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_LOGO_SND;
spin_unlock_irq(shost->host_lock);
- if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
- IOCB_ERROR) {
- spin_lock_irq(shost->host_lock);
- ndlp->nlp_flag &= ~NLP_LOGO_SND;
- spin_unlock_irq(shost->host_lock);
- lpfc_els_free_iocb(phba, elsiocb);
- return 1;
- }
+ elsiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!elsiocb->context1)
+ goto node_err;
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR)
+ goto io_err;
return 0;
+
+ io_err:
+ lpfc_nlp_put(ndlp);
+ node_err:
+ spin_lock_irq(shost->host_lock);
+ ndlp->nlp_flag &= ~NLP_LOGO_SND;
+ spin_unlock_irq(shost->host_lock);
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
}

/**
@@ -9660,8 +9875,6 @@ lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
goto repeat;
}
}
-
- return;
}

/**
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 47d26917e10f..9d387fbf65a3 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -178,7 +178,7 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
/* We need to hold the node by incrementing the reference
* count until this queued work is done
*/
- evtp->evt_arg1 = lpfc_nlp_get(ndlp);
+ evtp->evt_arg1 = lpfc_nlp_get(ndlp);

spin_lock_irqsave(&phba->hbalock, iflags);
if (evtp->evt_arg1) {
@@ -4214,6 +4214,13 @@ lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
rport->supported_classes = ndlp->nlp_class_sup;
rdata = rport->dd_data;
rdata->pnode = lpfc_nlp_get(ndlp);
+ if (!rdata->pnode) {
+ dev_warn(&phba->pcidev->dev,
+ "Warning - node ref failed. Unreg rport\n");
+ fc_remote_port_delete(rport);
+ ndlp->rport = NULL;
+ return;
+ }

if (ndlp->nlp_type & NLP_FCP_TARGET)
rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
@@ -5157,8 +5164,7 @@ lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
int rc;

lpfc_cancel_retry_delay_tmo(vport, ndlp);
- if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
- !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
+ if (!(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
!(ndlp->nlp_flag & NLP_RPI_REGISTERED) &&
phba->sli_rev != LPFC_SLI_REV4) {
/* For this case we need to cleanup the default rpi
diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
index 16a37c2153ae..5c57aeb1fb0b 100644
--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -357,7 +357,6 @@ lpfc_defer_acc_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
* Complete the unreg rpi mbx request, and update flags.
* This will also restart any deferred events.
*/
- lpfc_nlp_get(ndlp);
lpfc_sli4_unreg_rpi_cmpl_clr(phba, pmb);

if (!piocb) {
@@ -365,7 +364,7 @@ lpfc_defer_acc_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
"4578 PLOGI ACC fail\n");
if (mbox)
mempool_free(mbox, phba->mbox_mem_pool);
- goto out;
+ return;
}

rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, piocb, ndlp, mbox);
@@ -376,8 +375,6 @@ lpfc_defer_acc_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
mempool_free(mbox, phba->mbox_mem_pool);
}
kfree(piocb);
-out:
- lpfc_nlp_put(ndlp);
}

static int
@@ -588,7 +585,10 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
lpfc_unreg_login(phba, vport->vpi, rpi, link_mbox);
link_mbox->vport = vport;
- link_mbox->ctx_ndlp = ndlp;
+ link_mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!link_mbox->ctx_ndlp)
+ goto out;
+
link_mbox->mbox_cmpl = lpfc_defer_acc_rsp;

if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
@@ -1104,7 +1104,11 @@ lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
pmb->vport = vport;
- pmb->ctx_ndlp = ndlp;
+ pmb->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!pmb->ctx_ndlp) {
+ mempool_free(pmb, phba->mbox_mem_pool);
+ return;
+ }

if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
(!(vport->fc_flag & FC_OFFLINE_MODE)))
@@ -1342,7 +1346,6 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
uint32_t evt)
{
struct lpfc_hba *phba = vport->phba;
- struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_iocbq *cmdiocb, *rspiocb;
struct lpfc_dmabuf *pcmd, *prsp, *mp;
uint32_t *lp;
@@ -1488,7 +1491,11 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
}
+
mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!mbox->ctx_ndlp)
+ goto out;
+
mbox->vport = vport;
if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
!= MBX_NOT_FINISHED) {
@@ -1537,9 +1544,6 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,

ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
- spin_lock_irq(shost->host_lock);
- ndlp->nlp_flag |= NLP_DEFER_RM;
- spin_unlock_irq(shost->host_lock);
return NLP_STE_FREED_NODE;
}

@@ -2797,16 +2801,12 @@ lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
{
struct lpfc_iocbq *cmdiocb, *rspiocb;
IOCB_t *irsp;
- struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

cmdiocb = (struct lpfc_iocbq *) arg;
rspiocb = cmdiocb->context_un.rsp_iocb;

irsp = &rspiocb->iocb;
if (irsp->ulpStatus) {
- spin_lock_irq(shost->host_lock);
- ndlp->nlp_flag |= NLP_DEFER_RM;
- spin_unlock_irq(shost->host_lock);
return NLP_STE_FREED_NODE;
}
return ndlp->nlp_state;
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
index 19faae83b2c1..9e92fb337abd 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -567,6 +567,13 @@ lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,

/* Save for completion so we can release these resources */
genwqe->context1 = lpfc_nlp_get(ndlp);
+ if (!genwqe->context1) {
+ dev_warn(&phba->pcidev->dev,
+ "Warning: Failed node ref, not sending LS_REQ\n");
+ lpfc_sli_release_iocbq(phba, genwqe);
+ return 1;
+ }
+
genwqe->context2 = (uint8_t *)pnvme_lsreq;
/* Fill in payload, bp points to frame payload */

@@ -2466,7 +2473,11 @@ lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
spin_unlock_irq(&vport->phba->hbalock);
} else {
spin_unlock_irq(&vport->phba->hbalock);
- lpfc_nlp_get(ndlp);
+ if (!lpfc_nlp_get(ndlp)) {
+ dev_warn(&vport->phba->pcidev->dev,
+ "Warning - No node ref - exit register\n");
+ return 0;
+ }
}

ret = nvme_fc_register_remoteport(localport, &rpinfo, &remote_port);
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 4974bf671063..1232fad17d1e 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -2594,7 +2594,6 @@ lpfc_sli4_unreg_rpi_cmpl_clr(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
ndlp->nlp_flag,
ndlp);
ndlp->nlp_flag &= ~NLP_LOGO_ACC;
- lpfc_nlp_put(ndlp);

/* Check to see if there are any deferred
* events to process
@@ -2617,6 +2616,8 @@ lpfc_sli4_unreg_rpi_cmpl_clr(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
} else {
__lpfc_sli_rpi_release(vport, ndlp);
}
+
+ lpfc_nlp_put(ndlp);
}
}
}
@@ -11352,11 +11353,11 @@ lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
"x%x x%x x%x\n",
irsp->ulpIoTag, irsp->ulpStatus,
irsp->un.ulpWord[4], irsp->ulpTimeout);
+ lpfc_nlp_put((struct lpfc_nodelist *)cmdiocb->context1);
if (cmdiocb->iocb.ulpCommand == CMD_GEN_REQUEST64_CR)
lpfc_ct_free_iocb(phba, cmdiocb);
else
lpfc_els_free_iocb(phba, cmdiocb);
- return;
}

/**
@@ -17924,6 +17925,10 @@ lpfc_sli4_seq_abort_rsp(struct lpfc_vport *vport,
icmd->ulpClass = CLASS3;
icmd->ulpContext = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
ctiocb->context1 = lpfc_nlp_get(ndlp);
+ if (!ctiocb->context1) {
+ lpfc_sli_release_iocbq(phba, ctiocb);
+ return;
+ }

ctiocb->vport = phba->pport;
ctiocb->iocb_cmpl = lpfc_sli4_seq_abort_rsp_cmpl;