Spec: Make datapath ID 64 bits, up from 48

This commit allows multiple virtual switch instances to share a single physical switch.
2009-07-14 18:56:25 -07:00
parent 7e640ed0b4
commit 3087ecedcf
2 changed files with 5 additions and 2 deletions
@@ -246,8 +246,9 @@ OFP_ASSERT(sizeof(struct ofp_phy_port) == 48);
 /* Switch features. */
 struct ofp_switch_features {
    struct ofp_header header;
-    uint64_t datapath_id;   /* Datapath unique ID.  Only the lower 48-bits
-                               are meaningful. */
+    uint64_t datapath_id;   /* Datapath unique ID.  The lower 48-bits are for
+                               a MAC address, while the upper 16-bits are
+                               implementer-defined. */

    uint32_t n_buffers;     /* Max packets buffered at once. */