datapath-windows: Hot add CPU support.

Hot add CPU is the ability to dynamically add CPUs to a running
system. Adding CPUs can occur physically by adding new hardware,
logically by online hardware partitioning, or virtually through
a virtualization layer.

This patch add support to reallocate any per-cpu resources, in
case a new processor is added.

Signed-off-by: Sorin Vinturis <svinturis@cloudbasesolutions.com>
Reported-by: Sorin Vinturis <svinturis@cloudbasesolutions.com>
Reported-at: https://github.com/openvswitch/ovs-issues/issues/112
Acked-by: Paul-Daniel Boca <pboca@cloudbasesolutions.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>

1 files changed, 8 insertions, 5 deletions

diff --git a/datapath-windows/ovsext/Datapath.c b/datapath-windows/ovsext/Datapath.c
index 464fa9784..8c0c246a5 100644
--- a/datapath-windows/ovsext/Datapath.c
+++ b/datapath-windows/ovsext/Datapath.c
@@ -379,26 +379,29 @@ FreeUserDumpState(POVS_OPEN_INSTANCE instance)
     }
 }
 
-VOID
+NDIS_STATUS
 OvsInit()
 {
+    NDIS_STATUS status = NDIS_STATUS_SUCCESS;
+
     gOvsCtrlLock = &ovsCtrlLockObj;
     NdisAllocateSpinLock(gOvsCtrlLock);
     OvsInitEventQueue();
-    OvsDeferredActionsQueueAlloc();
-    OvsDeferredActionsLevelAlloc();
+
+    status = OvsPerCpuDataInit();
+
+    return status;
 }
 
 VOID
 OvsCleanup()
 {
+    OvsPerCpuDataCleanup();
     OvsCleanupEventQueue();
     if (gOvsCtrlLock) {
         NdisFreeSpinLock(gOvsCtrlLock);
         gOvsCtrlLock = NULL;
     }
-    OvsDeferredActionsQueueFree();
-    OvsDeferredActionsLevelFree();
 }
 
 VOID