[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>

1 files changed, 26 insertions, 8 deletions

diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 0a5006ea9909..9315c3c2e6f6 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;
 }