1 files changed, 32 insertions, 1 deletions

diff --git a/drivers/scsi/lpfc/lpfc_disc.h b/drivers/scsi/lpfc/lpfc_disc.h
index cfe81c50529a..8eb007309599 100644
--- a/drivers/scsi/lpfc/lpfc_disc.h
+++ b/drivers/scsi/lpfc/lpfc_disc.h
@@ -1,7 +1,7 @@
 /*******************************************************************
  * This file is part of the Emulex Linux Device Driver for         *
  * Fibre Channel Host Bus Adapters.                                *
- * Copyright (C) 2004-2007 Emulex.  All rights reserved.           *
+ * Copyright (C) 2004-2008 Emulex.  All rights reserved.           *
  * EMULEX and SLI are trademarks of Emulex.                        *
  * www.emulex.com                                                  *
  *                                                                 *
@@ -73,6 +73,12 @@ struct lpfc_nodelist {
         uint8_t         nlp_fcp_info;           /* class info, bits 0-3 */
 #define NLP_FCP_2_DEVICE   0x10                 /* FCP-2 device */
 
+        uint16_t        nlp_usg_map;    /* ndlp management usage bitmap */
+#define NLP_USG_NODE_ACT_BIT    0x1     /* Indicate ndlp is actively used */
+#define NLP_USG_IACT_REQ_BIT    0x2     /* Request to inactivate ndlp */
+#define NLP_USG_FREE_REQ_BIT    0x4     /* Request to invoke ndlp memory free */
+#define NLP_USG_FREE_ACK_BIT    0x8     /* Indicate ndlp memory free invoked */
+
         struct timer_list   nlp_delayfunc;      /* Used for delayed ELS cmds */
         struct fc_rport *rport;                 /* Corresponding FC transport
                                                    port structure */
@@ -105,6 +111,31 @@ struct lpfc_nodelist {
 #define NLP_NODEV_REMOVE   0x8000000    /* Defer removal till discovery ends */
 #define NLP_TARGET_REMOVE  0x10000000   /* Target remove in process */
 
+/* ndlp usage management macros */
+#define NLP_CHK_NODE_ACT(ndlp)          (((ndlp)->nlp_usg_map \
+                                                & NLP_USG_NODE_ACT_BIT) \
+                                        && \
+                                        !((ndlp)->nlp_usg_map \
+                                                & NLP_USG_FREE_ACK_BIT))
+#define NLP_SET_NODE_ACT(ndlp)          ((ndlp)->nlp_usg_map \
+                                                |= NLP_USG_NODE_ACT_BIT)
+#define NLP_INT_NODE_ACT(ndlp)          ((ndlp)->nlp_usg_map \
+                                                = NLP_USG_NODE_ACT_BIT)
+#define NLP_CLR_NODE_ACT(ndlp)          ((ndlp)->nlp_usg_map \
+                                                &= ~NLP_USG_NODE_ACT_BIT)
+#define NLP_CHK_IACT_REQ(ndlp)          ((ndlp)->nlp_usg_map \
+                                                & NLP_USG_IACT_REQ_BIT)
+#define NLP_SET_IACT_REQ(ndlp)          ((ndlp)->nlp_usg_map \
+                                                |= NLP_USG_IACT_REQ_BIT)
+#define NLP_CHK_FREE_REQ(ndlp)          ((ndlp)->nlp_usg_map \
+                                                & NLP_USG_FREE_REQ_BIT)
+#define NLP_SET_FREE_REQ(ndlp)          ((ndlp)->nlp_usg_map \
+                                                |= NLP_USG_FREE_REQ_BIT)
+#define NLP_CHK_FREE_ACK(ndlp)          ((ndlp)->nlp_usg_map \
+                                                & NLP_USG_FREE_ACK_BIT)
+#define NLP_SET_FREE_ACK(ndlp)          ((ndlp)->nlp_usg_map \
+                                                |= NLP_USG_FREE_ACK_BIT)
+
 /* There are 4 different double linked lists nodelist entries can reside on.
  * The Port Login (PLOGI) list and Address Discovery (ADISC) list are used
  * when Link Up discovery or Registered State Change Notification (RSCN)