Signed-off-by: Nithin Raju <nit...@vmware.com>
Signed-off-by: Ankur Sharma <ankursha...@vmware.com>
Acked-by: Ankur Sharma <ankursha...@vmware.com>
---
Please attribute this change to Nithin Raju <nit...@vmware.com>
---
datapath-windows/ovsext/Datapath.h | 58 +++++++++++++++++++++++++++++++-------
1 file changed, 48 insertions(+), 10 deletions(-)
diff --git a/datapath-windows/ovsext/Datapath.h
b/datapath-windows/ovsext/Datapath.h
index bfbbd71..a8faeff 100644
--- a/datapath-windows/ovsext/Datapath.h
+++ b/datapath-windows/ovsext/Datapath.h
@@ -28,6 +28,16 @@
#ifndef __DATAPATH_H_
#define __DATAPATH_H_ 1
+/*
+ * Structure of any message passed between userspace and kernel.
+ */
+typedef struct _OVS_MESSAGE {
+ NL_MSG_HDR nlMsg;
+ GENL_MSG_HDR genlMsg;
+ OVS_HDR ovsHdr;
+ /* Variable length nl_attrs follow. */
+} OVS_MESSAGE, *POVS_MESSAGE;
+
typedef struct _OVS_DEVICE_EXTENSION {
INT numberOpenInstance;
INT pidCount;
@@ -56,7 +66,15 @@ typedef struct _OVS_OPEN_INSTANCE {
* the state in "state-aware" read calls which rely on previous state. This
* restriction might go away as the userspace code gets implemented.
*/
- INT inUse;
+ INT inUse;
+
+ struct {
+ POVS_MESSAGE ovsMsg; /* OVS message passed during dump start. */
+ UINT32 index[2]; /* markers to continue dump from. One or more
+ * of them may be used. Eg. in flow dump, the
+ * markers can store the row and the column
+ * indices. */
+ } dumpState; /* data to support dump commands. */
} OVS_OPEN_INSTANCE, *POVS_OPEN_INSTANCE;
NDIS_STATUS OvsCreateDeviceObject(NDIS_HANDLE ovsExtDriverHandle);
@@ -67,15 +85,35 @@ POVS_OPEN_INSTANCE OvsGetOpenInstance(PFILE_OBJECT
fileObject,
NTSTATUS OvsCompleteIrpRequest(PIRP irp, ULONG_PTR infoPtr, NTSTATUS status);
-/*
- * Structure of any message passed between userspace and kernel.
- */
-typedef struct _OVS_MESSAGE {
- NL_MSG_HDR nlMsg;
- GENL_MSG_HDR genlMsg;
- struct ovs_header ovsHdr;
- /* Variable length nl_attrs follow. */
-} OVS_MESSAGE, *POVS_MESSAGE;
+static __inline NTSTATUS
+InitUserDumpState(POVS_OPEN_INSTANCE instance,
+ POVS_MESSAGE ovsMsg)
+{
+ /* Clear the dumpState from a previous dump sequence. */
+ ASSERT(instance->dumpState.ovsMsg == NULL);
+ ASSERT(ovsMsg);
+
+ instance->dumpState.ovsMsg =
+ (POVS_MESSAGE) OvsAllocateMemory(sizeof (OVS_MESSAGE));
+ if (instance->dumpState.ovsMsg == NULL) {
+ return STATUS_NO_MEMORY;
+ }
+ RtlCopyMemory(instance->dumpState.ovsMsg, ovsMsg,
+ sizeof *instance->dumpState.ovsMsg);
+ RtlZeroMemory(instance->dumpState.index,
+ sizeof instance->dumpState.index);
+
+ return STATUS_SUCCESS;
+}
+
+static __inline VOID
+FreeUserDumpState(POVS_OPEN_INSTANCE instance)
+{
+ if (instance->dumpState.ovsMsg != NULL) {
+ OvsFreeMemory(instance->dumpState.ovsMsg);
+ RtlZeroMemory(&instance->dumpState, sizeof instance->dumpState);
+ }
+}
#endif /* __DATAPATH_H_ */
--
1.8.3.2
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