From: Ben Pfaff <blp@nicira.com>
Date: Wed, 10 Sep 2008 20:20:36 +0000 (-0700)
Subject: Add vendor-specific messages and statistics to OpenFlow protocol.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=696db2c3b64a5a9b8b8998b4fd0484c5b59ae7ee;p=openvswitch

Add vendor-specific messages and statistics to OpenFlow protocol.
---

diff --git a/include/openflow.h b/include/openflow.h
index 27550c56..e7d15893 100644
--- a/include/openflow.h
+++ b/include/openflow.h
@@ -117,7 +117,8 @@ enum ofp_type {
     OFPT_STATS_REQUEST,       /* 13 Controller/switch message */
     OFPT_STATS_REPLY,         /* 14 Controller/switch message */
     OFPT_ECHO_REQUEST,        /* 15 Symmetric message */
-    OFPT_ECHO_REPLY           /* 16 Symmetric message */
+    OFPT_ECHO_REPLY,          /* 16 Symmetric message */
+    OFPT_VENDOR = 0xff        /* 255 Vendor extension */
 };
 
 /* Header on all OpenFlow packets. */
@@ -493,7 +494,13 @@ enum ofp_stats_types {
      * key-value pairs are included.
      * The reply body is an ASCII string of key-value pairs in the form
      * "key=value\n". */
-    OFPST_SWITCH
+    OFPST_SWITCH,
+
+    /* Vendor extension.
+     * The request and reply bodies begin with a 32-bit vendor ID, which takes
+     * the same form as in "struct ofp_vendor".  The request and reply bodies
+     * are otherwise vendor-defined. */
+    OFPST_VENDOR = 0xffff
 };
 
 struct ofp_stats_request {
@@ -610,4 +617,15 @@ struct ofp_port_stats {
 };
 OFP_ASSERT(sizeof(struct ofp_port_stats) == 104);
 
+/* Vendor extension. */
+struct ofp_vendor {
+    struct ofp_header header;   /* Type OFPT_VENDOR. */
+    uint32_t vendor;            /* Vendor ID:
+                                 * - MSB 0: low-order bytes are Ethernet OUI.
+                                 * - MSB != 0: defined by OpenFlow
+                                 *   consortium. */
+    /* Vendor-defined arbitrary additional data. */
+};
+OFP_ASSERT(sizeof(struct ofp_vendor) == 12);
+
 #endif /* openflow.h */