Added NlFillOvsMsg API in Netlink.c This API will be used to populate
netlink message headers.
Signed-off-by: Ankur Sharma <ankursha...@vmware.com>
Acked-by: Alin Gabriel Serdean <aserd...@cloudbasesolutions.com>
Acked-by: Eitan Eliahu <elia...@vmware.com>
---
datapath-windows/ovsext/Netlink/Netlink.c | 38 +++++++++++++++++++++++++++++++
datapath-windows/ovsext/Netlink/Netlink.h | 6 +++++
2 files changed, 44 insertions(+)
diff --git a/datapath-windows/ovsext/Netlink/Netlink.c
b/datapath-windows/ovsext/Netlink/Netlink.c
index c286c2f..a2829a5 100644
--- a/datapath-windows/ovsext/Netlink/Netlink.c
+++ b/datapath-windows/ovsext/Netlink/Netlink.c
@@ -34,6 +34,44 @@
/*
* ---------------------------------------------------------------------------
+ * Prepare netlink message headers. Attributes should be added by caller.
+ * ---------------------------------------------------------------------------
+ */
+NTSTATUS
+NlFillOvsMsg(POVS_MESSAGE msgOut, PNL_BUFFER nlBuf,
+ UINT16 nlmsgType, UINT16 nlmsgFlags,
+ UINT32 nlmsgSeq, UINT32 nlmsgPid,
+ UINT8 genlCmd, UINT8 genlVer, UINT32 dpNo)
+{
+ BOOLEAN writeOk;
+ PNL_MSG_HDR nlMsg;
+
+ /* XXX: Add API for nlBuf->bufRemLen. */
+ ASSERT(NlBufAt(nlBuf, 0, 0) != 0 &&
+ nlBuf->bufRemLen >= sizeof (struct _OVS_MESSAGE));
+
+ msgOut->nlMsg.nlmsgType = nlmsgType;
+ msgOut->nlMsg.nlmsgFlags = nlmsgFlags;
+ msgOut->nlMsg.nlmsgSeq = nlmsgSeq;
+ msgOut->nlMsg.nlmsgPid = nlmsgPid;
+
+ msgOut->genlMsg.cmd = genlCmd;
+ msgOut->genlMsg.version = genlVer;
+ msgOut->genlMsg.reserved = 0;
+
+ msgOut->ovsHdr.dp_ifindex = dpNo;
+
+ writeOk = NlMsgPutHead(nlBuf, (PCHAR)msgOut,
+ sizeof (struct _OVS_MESSAGE));
+
+ nlMsg = (PNL_MSG_HDR)NlBufAt(nlBuf, 0, 0);
+ nlMsg->nlmsgLen = NlBufSize(nlBuf);
+
+ return writeOk ? STATUS_SUCCESS : STATUS_INVALID_BUFFER_SIZE;
+}
+
+/*
+ * ---------------------------------------------------------------------------
* Adds Netlink Header to the NL_BUF.
* ---------------------------------------------------------------------------
*/
diff --git a/datapath-windows/ovsext/Netlink/Netlink.h
b/datapath-windows/ovsext/Netlink/Netlink.h
index b036723..774faf4 100644
--- a/datapath-windows/ovsext/Netlink/Netlink.h
+++ b/datapath-windows/ovsext/Netlink/Netlink.h
@@ -78,6 +78,12 @@ typedef struct _NL_POLICY
#define NL_ATTR_GET_AS(NLA, TYPE) \
(*(TYPE*) NlAttrGetUnspec(nla, sizeof(TYPE)))
+NTSTATUS
+NlFillOvsMsg(POVS_MESSAGE msgOut, PNL_BUFFER nlBuf,
+ UINT16 nlmsgType, UINT16 nlmsgFlags,
+ UINT32 nlmsgSeq, UINT32 nlmsgPid,
+ UINT8 genlCmd, UINT8 genlVer, UINT32 dpNo);
+
/* Netlink message accessing the payload */
PVOID NlMsgAt(const PNL_MSG_HDR nlh, UINT32 offset);
UINT32 NlMsgSize(const PNL_MSG_HDR nlh);
--
1.9.1
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