4779 vhci shouldn't abuse ddi_get_time(9f)
Reviewed by: Robert Mustacchi <rm@joyent.com>

@@ -19,10 +19,13 @@
  * CDDL HEADER END
  */
 /*
  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
  */
+/*
+ * Copyright 2014 Nexenta Systems, Inc.  All rights reserved.
+ */
 
 /*
  * Multiplexed I/O SCSI vHCI implementation
  */
 

@@ -2224,11 +2227,10 @@
         int                     rval = -1;
         int                     pgr_sema_held = 0;
         int                     held;
         int                     mps_flag = MDI_SELECT_ONLINE_PATH;
         struct scsi_vhci_lun    *vlun;
-        time_t                  tnow;
         int                     path_instance = 0;
 
         vlun = ADDR2VLUN(ap);
         ASSERT(vlun != 0);
 

@@ -2362,11 +2364,11 @@
                         rval = mdi_select_path(cdip, vpkt->vpkt_tgt_init_bp,
                             mps_flag, NULL, &pip);
                         if ((rval != MDI_SUCCESS) || (pip == NULL)) {
                                 if (vlun->svl_waiting_for_activepath == 0) {
                                         vlun->svl_waiting_for_activepath = 1;
-                                        vlun->svl_wfa_time = ddi_get_time();
+                                        vlun->svl_wfa_time = gethrtime();
                                 }
                                 mps_flag |= MDI_SELECT_STANDBY_PATH;
                                 rval = mdi_select_path(cdip,
                                     vpkt->vpkt_tgt_init_bp,
                                     mps_flag, NULL, &pip);

@@ -2394,12 +2396,12 @@
                                  * passive path; lets wait for a little
                                  * bit, hopefully an active path will
                                  * show up obviating the need for a
                                  * failover
                                  */
-                                tnow = ddi_get_time();
-                                if (tnow - vlun->svl_wfa_time >= 60) {
+                                if ((gethrtime() - vlun->svl_wfa_time) >=
+                                    (60 * NANOSEC)) {
                                         vlun->svl_waiting_for_activepath = 0;
                                 } else {
                                         drv_usecwait(1000);
                                         if (vlun->svl_waiting_for_activepath
                                             == 0) {

@@ -3622,11 +3624,11 @@
                             vlun->svl_lun_wwn));
                         VHCI_RELEASE_LUN(vlun);
                         return (PKT_RETURN);
                 }
                 swarg->svs_svp = svp;
-                swarg->svs_tos = ddi_get_time();
+                swarg->svs_tos = gethrtime();
                 swarg->svs_pi = vpkt->vpkt_path;
                 swarg->svs_release_lun = 0;
                 swarg->svs_done = 0;
                 /*
                  * place a hold on the path...we don't want it to

@@ -3683,11 +3685,11 @@
             ddi_get_instance(vdip));
 
         updt_paths = 0;
 
         if (pkt->pkt_reason != CMD_CMPLT) {
-                if ((ddi_get_time() - swarg->svs_tos) >= VHCI_EXTFO_TIMEOUT) {
+                if ((gethrtime() - swarg->svs_tos) >= VHCI_EXTFO_TIMEOUT) {
                         swarg->svs_release_lun = 1;
                         goto done;
                 }
                 return (0);
         }

@@ -3705,11 +3707,11 @@
                         case SCSI_SENSE_INACTIVE:
                         case SCSI_SENSE_NOFAILOVER:
                                 updt_paths = 1;
                                 break;
                         default:
-                                if ((ddi_get_time() - swarg->svs_tos)
+                                if ((gethrtime() - swarg->svs_tos)
                                     >= VHCI_EXTFO_TIMEOUT) {
                                         swarg->svs_release_lun = 1;
                                         goto done;
                                 }
                                 return (0);

@@ -3737,11 +3739,11 @@
                 (void) taskq_dispatch(vhci->vhci_update_pathstates_taskq,
                     vhci_update_pathstates, (void *)vlun,
                     KM_SLEEP);
                 return (0);
         }
-        if ((ddi_get_time() - swarg->svs_tos) >= VHCI_EXTFO_TIMEOUT) {
+        if ((gethrtime() - swarg->svs_tos) >= VHCI_EXTFO_TIMEOUT) {
                 swarg->svs_release_lun = 1;
                 goto done;
         }
         return (0);
 done: