[ovs-dev] [PATCH 1/4] Upcall NL packet format: Add NL utilities

Eitan Eliahu eliahue at vmware.com
Wed Oct 15 08:41:07 UTC 2014


Add NlAttrSize and NlAttrTotalSize

Signed-off-by: Eitan Eliahu <eliahue at vmware.com>
Acked-by: Ankur Sharma <ankursharma at vmware.com>
Acked-by: Nithin Raju <nithin at vmware.com>

---
 datapath-windows/ovsext/Netlink/Netlink.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/datapath-windows/ovsext/Netlink/Netlink.h b/datapath-windows/ovsext/Netlink/Netlink.h
index cd55647..438d857 100644
--- a/datapath-windows/ovsext/Netlink/Netlink.h
+++ b/datapath-windows/ovsext/Netlink/Netlink.h
@@ -137,6 +137,28 @@ NlAttrLen(const PNL_ATTR nla)
     return nla->nlaLen;
 }
 
+/*
+ * ---------------------------------------------------------------------------
+ * Default maximum payload size for each type of attribute.
+ * ---------------------------------------------------------------------------
+ */
+UINT32
+static __inline NlAttrSize(UINT32 payloadSize)
+{
+    return NLA_HDRLEN + payloadSize;
+}
+
+/*
+ * ---------------------------------------------------------------------------
+ * Total length including padding.
+ * ---------------------------------------------------------------------------
+ */
+UINT32
+static __inline NlAttrTotalSize(UINT32 payloadSize)
+{
+    return NLA_ALIGN(NlAttrSize(payloadSize));
+}
+
 /* Netlink attribute validation */
 BOOLEAN NlAttrValidate(const PNL_ATTR, const PNL_POLICY);
 
-- 
1.9.4.msysgit.0




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