ofp-util: Add version bitmap support to hello messages.

[sliver-openvswitch.git] / include / openflow / openflow-common.h

diff --git a/include/openflow/openflow-common.h b/include/openflow/openflow-common.h
index 202ba1e..462b2fc 100644 (file)
--- a/include/openflow/openflow-common.h
+++ b/include/openflow/openflow-common.h
@@ -71,9 +71,11 @@
 /* The most significant bit being set in the version field indicates an
  * experimental OpenFlow version.
  */
-#define OFP10_VERSION   0x01
-#define OFP11_VERSION   0x02
-#define OFP12_VERSION   0x03
+enum ofp_version {
+    OFP10_VERSION = 0x01,
+    OFP11_VERSION = 0x02,
+    OFP12_VERSION = 0x03,
+};
 
 #define OFP_MAX_TABLE_NAME_LEN 32
 #define OFP_MAX_PORT_NAME_LEN  16
@@ -332,4 +334,15 @@ enum ofp_group {
     OFPG_ANY        = 0xffffffff   /* Wildcard, for flow stats requests. */
 };
 
+enum ofp_hello_elem_type {
+    OFPHET_VERSIONBITMAP          = 1, /* Bitmap of version supported. */
+};
+
+/* Common header for all Hello Elements */
+struct ofp_hello_elem_header {
+    ovs_be16    type;        /* One of OFPHET_*. */
+    ovs_be16    length;      /* Length in bytes of this element. */
+};
+OFP_ASSERT(sizeof(struct ofp_hello_elem_header) == 4);
+
 #endif /* openflow/openflow-common.h */