[SCSI] lpfc 8.2.3 : Miscellaneous Small Fixes - part 2

Miscellaneous Small Fixes - part 2

- Fix ndlp left in PLOGI state after link up
- Fix cannot rcv unsol ELS frames after running HBA resets for a few minutes
- Fix HBQ buffer_count implemention
- Fix RPI leak
- Fix crash while deleting vports while HBA is reset
- Revert the FCP Fbits offset back to 7
- Fix panic when deleting vports
- Remove unused code in switch statement outside of a case
- Reject PLOGI from invalid PName or NName of 0
- Ignore PLOGI responses from WWPName or WWNName of 0
- Fix debugfs hbqinfo display for ppc
- Added 8G to list of supported speeds for sysfs parameter
- Defer ndlp cleanup to dev-loss timeout handler
- Added support for WRITE_VPARMS mailbox command by applications

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

10 files changed, 152 insertions, 41 deletions

diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index ff6b7d33cca..636a930a573 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -367,6 +367,7 @@ struct lpfc_vport {
 
 struct hbq_s {
         uint16_t entry_count;     /* Current number of HBQ slots */
+        uint16_t buffer_count;    /* Current number of buffers posted */
         uint32_t next_hbqPutIdx;  /* Index to next HBQ slot to use */
         uint32_t hbqPutIdx;       /* HBQ slot to use */
         uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index e8e9905828c..4e9e890449a 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -187,12 +187,9 @@ lpfc_state_show(struct class_device *cdev, char *buf)
         case LPFC_LINK_UP:
         case LPFC_CLEAR_LA:
         case LPFC_HBA_READY:
-                len += snprintf(buf + len, PAGE_SIZE-len, "Link Up - \n");
+                len += snprintf(buf + len, PAGE_SIZE-len, "Link Up - ");
 
                 switch (vport->port_state) {
-                        len += snprintf(buf + len, PAGE_SIZE-len,
-                                        "initializing\n");
-                        break;
                 case LPFC_LOCAL_CFG_LINK:
                         len += snprintf(buf + len, PAGE_SIZE-len,
                                         "Configuring Link\n");
@@ -1759,7 +1756,6 @@ sysfs_mbox_read(struct kobject *kobj, struct bin_attribute *bin_attr,
 
                 switch (phba->sysfs_mbox.mbox->mb.mbxCommand) {
                         /* Offline only */
-                case MBX_WRITE_NV:
                 case MBX_INIT_LINK:
                 case MBX_DOWN_LINK:
                 case MBX_CONFIG_LINK:
@@ -1782,6 +1778,8 @@ sysfs_mbox_read(struct kobject *kobj, struct bin_attribute *bin_attr,
                                 spin_unlock_irq(&phba->hbalock);
                                 return -EPERM;
                         }
+                case MBX_WRITE_NV:
+                case MBX_WRITE_VPARMS:
                 case MBX_LOAD_SM:
                 case MBX_READ_NV:
                 case MBX_READ_CONFIG:
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index d6a98bc970f..da607c775cf 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -243,16 +243,17 @@ lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
         raw_index = phba->hbq_get[i];
         getidx = le32_to_cpu(raw_index);
         len +=  snprintf(buf+len, size-len,
-                "entrys:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
-                hbqs->entry_count, hbqs->hbqPutIdx, hbqs->next_hbqPutIdx,
-                hbqs->local_hbqGetIdx, getidx);
+                "entrys:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
+                hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx,
+                hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx);
 
         hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt;
         for (j=0; j<hbqs->entry_count; j++) {
                 len +=  snprintf(buf+len, size-len,
                         "%03d: %08x %04x %05x ", j,
-                        hbqe->bde.addrLow, hbqe->bde.tus.w, hbqe->buffer_tag);
-
+                        le32_to_cpu(hbqe->bde.addrLow),
+                        le32_to_cpu(hbqe->bde.tus.w),
+                        le32_to_cpu(hbqe->buffer_tag));
                 i = 0;
                 found = 0;
 
@@ -276,7 +277,7 @@ lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
                 list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) {
                         hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
                         phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff);
-                        if (phys == hbqe->bde.addrLow) {
+                        if (phys == le32_to_cpu(hbqe->bde.addrLow)) {
                                 len +=  snprintf(buf+len, size-len,
                                         "Buf%d: %p %06x\n", i,
                                         hbq_buf->dbuf.virt, hbq_buf->tag);
diff --git a/drivers/scsi/lpfc/lpfc_disc.h b/drivers/scsi/lpfc/lpfc_disc.h
index 99bc1a1ecac..cfe81c50529 100644
--- a/drivers/scsi/lpfc/lpfc_disc.h
+++ b/drivers/scsi/lpfc/lpfc_disc.h
@@ -91,6 +91,7 @@ struct lpfc_nodelist {
 #define NLP_LOGO_SND       0x100        /* sent LOGO request for this entry */
 #define NLP_RNID_SND       0x400        /* sent RNID request for this entry */
 #define NLP_ELS_SND_MASK   0x7e0        /* sent ELS request for this entry */
+#define NLP_DEFER_RM       0x10000      /* Remove this ndlp if no longer used */
 #define NLP_DELAY_TMO      0x20000      /* delay timeout is running for node */
 #define NLP_NPR_2B_DISC    0x40000      /* node is included in num_disc_nodes */
 #define NLP_RCV_PLOGI      0x80000      /* Rcv'ed PLOGI from remote system */
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 0a5006ea990..9315c3c2e6f 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -2069,9 +2069,25 @@ int
 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
 {
         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
+        struct lpfc_nodelist *ndlp;
 
-        if (elsiocb->context1) {
-                lpfc_nlp_put(elsiocb->context1);
+        ndlp = (struct lpfc_nodelist *)elsiocb->context1;
+        if (ndlp) {
+                if (ndlp->nlp_flag & NLP_DEFER_RM) {
+                        lpfc_nlp_put(ndlp);
+
+                        /* 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 */
@@ -2130,13 +2146,15 @@ lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
         lpfc_mbuf_free(phba, mp->virt, mp->phys);
         kfree(mp);
         mempool_free(pmb, phba->mbox_mem_pool);
-        lpfc_nlp_put(ndlp);
+        if (ndlp) {
+                lpfc_nlp_put(ndlp);
 
-        /* This is the end of the default RPI cleanup logic for this
-         * ndlp. If no other discovery threads are using this ndlp.
-         * we should free all resources associated with it.
-         */
-        lpfc_nlp_not_used(ndlp);
+                /* This is the end of the default RPI cleanup logic for this
+                 * ndlp. If no other discovery threads are using this ndlp.
+                 * we should free all resources associated with it.
+                 */
+                lpfc_nlp_not_used(ndlp);
+        }
         return;
 }
 
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index f64ce88e8a0..371f41e886d 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -108,6 +108,8 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
         struct lpfc_vport *vport;
         struct lpfc_hba   *phba;
         struct lpfc_work_evt *evtp;
+        int  put_node;
+        int  put_rport;
 
         rdata = rport->dd_data;
         ndlp = rdata->pnode;
@@ -128,6 +130,25 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 
+        /* 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.
+         */
+        if (vport->load_flag & FC_UNLOADING) {
+                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 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
+                return;
+
         evtp = &ndlp->dev_loss_evt;
 
         if (!list_empty(&evtp->evt_listp))
@@ -175,8 +196,23 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
                 "rport devlosstmo:did:x%x type:x%x id:x%x",
                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 
-        if (!(vport->load_flag & FC_UNLOADING) &&
-            ndlp->nlp_state == NLP_STE_MAPPED_NODE)
+        /* 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.
+         */
+        if (vport->load_flag & FC_UNLOADING) {
+                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 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
                 return;
 
         if (ndlp->nlp_type & NLP_FABRIC) {
@@ -1965,12 +2001,39 @@ lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 static void
 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
+        struct lpfc_hba  *phba = vport->phba;
         struct lpfc_rport_data *rdata;
+        LPFC_MBOXQ_t *mbox;
+        int rc;
 
         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
         }
 
+        if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
+                /* For this case we need to cleanup the default rpi
+                 * allocated by the firmware.
+                 */
+                if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
+                        != NULL) {
+                        rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
+                            (uint8_t *) &vport->fc_sparam, mbox, 0);
+                        if (rc) {
+                                mempool_free(mbox, phba->mbox_mem_pool);
+                        }
+                        else {
+                                mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
+                                mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
+                                mbox->vport = vport;
+                                mbox->context2 = 0;
+                                rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+                                if (rc == MBX_NOT_FINISHED) {
+                                        mempool_free(mbox, phba->mbox_mem_pool);
+                                }
+                        }
+                }
+        }
+
         lpfc_cleanup_node(vport, ndlp);
 
         /*
diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h
index b075d595648..8635b929464 100644
--- a/drivers/scsi/lpfc/lpfc_hw.h
+++ b/drivers/scsi/lpfc/lpfc_hw.h
@@ -153,11 +153,7 @@ struct lpfc_sli_ct_request {
                 struct gff_acc {
                         uint8_t fbits[128];
                 } gff_acc;
-#ifdef __BIG_ENDIAN_BITFIELD
 #define FCP_TYPE_FEATURE_OFFSET 7
-#else   /*  __LITTLE_ENDIAN_BITFIELD */
-#define FCP_TYPE_FEATURE_OFFSET 4
-#endif
                 struct rff {
                         uint32_t PortId;
                         uint8_t reserved[2];
@@ -1288,8 +1284,9 @@ typedef struct {		/* FireFly BIU registers */
 #define MBX_KILL_BOARD      0x24
 #define MBX_CONFIG_FARP     0x25
 #define MBX_BEACON          0x2A
-#define MBX_ASYNCEVT_ENABLE 0x33
 #define MBX_HEARTBEAT       0x31
+#define MBX_WRITE_VPARMS    0x32
+#define MBX_ASYNCEVT_ENABLE 0x33
 
 #define MBX_CONFIG_HBQ      0x7C
 #define MBX_LOAD_AREA       0x81
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index ceb185fa321..db96f7504a1 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -1339,6 +1339,7 @@ lpfc_cleanup(struct lpfc_vport *vport)
 {
         struct lpfc_hba   *phba = vport->phba;
         struct lpfc_nodelist *ndlp, *next_ndlp;
+        int i = 0;
 
         if (phba->link_state > LPFC_LINK_DOWN)
                 lpfc_port_link_failure(vport);
@@ -1351,17 +1352,20 @@ lpfc_cleanup(struct lpfc_vport *vport)
                                              NLP_EVT_DEVICE_RM);
         }
 
-        /* At this point, ALL ndlp's should be gone */
+        /* At this point, ALL ndlp's should be gone
+         * because of the previous NLP_EVT_DEVICE_RM.
+         * Lets wait for this to happen, if needed.
+         */
         while (!list_empty(&vport->fc_nodes)) {
 
-                list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
-                        nlp_listp) {
+                if (i++ > 3000) {
                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
-                                "0233 Nodelist x%x not free: %d\n",
-                                ndlp->nlp_DID,
-                                atomic_read(&ndlp->kref.refcount));
-                        lpfc_drop_node(vport, ndlp);
+                                "0233 Nodelist not empty\n");
+                        break;
                 }
+
+                /* Wait for any activity on ndlps to settle */
+                msleep(10);
         }
         return;
 }
@@ -1499,6 +1503,8 @@ lpfc_offline_prep(struct lpfc_hba * phba)
                 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
                         struct Scsi_Host *shost;
 
+                        if (vports[i]->load_flag & FC_UNLOADING)
+                                continue;
                         shost = lpfc_shost_from_vport(vports[i]);
                         list_for_each_entry_safe(ndlp, next_ndlp,
                                                  &vports[i]->fc_nodes,
@@ -1771,6 +1777,8 @@ void lpfc_host_attrib_init(struct Scsi_Host *shost)
         fc_host_supported_speeds(shost) = 0;
         if (phba->lmt & LMT_10Gb)
                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
+        if (phba->lmt & LMT_8Gb)
+                fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
         if (phba->lmt & LMT_4Gb)
                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
         if (phba->lmt & LMT_2Gb)
diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
index bba1fb6103f..c654c787c3e 100644
--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -287,6 +287,24 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
         lp = (uint32_t *) pcmd->virt;
         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
+        if (wwn_to_u64(sp->portName.u.wwn) == 0) {
+                lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+                                 "0140 PLOGI Reject: invalid nname\n");
+                stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+                stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
+                lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
+                        NULL);
+                return 0;
+        }
+        if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
+                lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+                                 "0141 PLOGI Reject: invalid pname\n");
+                stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+                stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
+                lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
+                        NULL);
+                return 0;
+        }
         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
                 /* Reject this request because invalid parameters */
                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
@@ -821,6 +839,12 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 
         lp = (uint32_t *) prsp->virt;
         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
+        if (wwn_to_u64(sp->portName.u.wwn) == 0 ||
+            wwn_to_u64(sp->nodeName.u.wwn) == 0) {
+                lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+                                 "0142 PLOGI RSP: Invalid WWN.\n");
+                goto out;
+        }
         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
                 goto out;
         /* PLOGI chkparm OK */
@@ -906,9 +930,7 @@ out:
                                  "0261 Cannot Register NameServer login\n");
         }
 
-        /* Free this node since the driver cannot login or has the wrong
-           sparm */
-        lpfc_nlp_not_used(ndlp);
+        ndlp->nlp_flag |= NLP_DEFER_RM;
         return NLP_STE_FREED_NODE;
 }
 
@@ -1795,7 +1817,7 @@ lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 
         irsp = &rspiocb->iocb;
         if (irsp->ulpStatus) {
-                lpfc_nlp_not_used(ndlp);
+                ndlp->nlp_flag |= NLP_DEFER_RM;
                 return NLP_STE_FREED_NODE;
         }
         return ndlp->nlp_state;
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 49f2fdd2ba2..c3743d6f445 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -540,6 +540,7 @@ lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba)
                         list_del(&hbq_buf->dbuf.list);
                         (phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf);
                 }
+                phba->hbqs[i].buffer_count = 0;
         }
 }
 
@@ -608,8 +609,8 @@ lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
                 return 0;
         }
 
-        start = lpfc_hbq_defs[hbqno]->buffer_count;
-        end = count + lpfc_hbq_defs[hbqno]->buffer_count;
+        start = phba->hbqs[hbqno].buffer_count;
+        end = count + start;
         if (end > lpfc_hbq_defs[hbqno]->entry_count) {
                 end = lpfc_hbq_defs[hbqno]->entry_count;
         }
@@ -621,7 +622,7 @@ lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
                         return 1;
                 hbq_buffer->tag = (i | (hbqno << 16));
                 if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer))
-                        lpfc_hbq_defs[hbqno]->buffer_count++;
+                        phba->hbqs[hbqno].buffer_count++;
                 else
                         (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
         }
@@ -661,7 +662,7 @@ lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
         }
         lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT,
                         "1803 Bad hbq tag. Data: x%x x%x\n",
-                        tag, lpfc_hbq_defs[tag >> 16]->buffer_count);
+                        tag, phba->hbqs[tag >> 16].buffer_count);
         return NULL;
 }
 
@@ -687,6 +688,7 @@ lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
         case MBX_LOAD_SM:
         case MBX_READ_NV:
         case MBX_WRITE_NV:
+        case MBX_WRITE_VPARMS:
         case MBX_RUN_BIU_DIAG:
         case MBX_INIT_LINK:
         case MBX_DOWN_LINK: