X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fodp-util.h;h=dd320aca523b5f8b63aee6e3edfe5c35584d5106;hb=3bffc610fa3ae08fa837f6bd0bf7a2deebdd0970;hp=dc9a43db215f66778e44d4eeeedb3d7d08aa0bf8;hpb=3762274e6359f4afe04107851f4c71347fa0afa0;p=openvswitch

diff --git a/lib/odp-util.h b/lib/odp-util.h
index dc9a43db..dd320aca 100644
--- a/lib/odp-util.h
+++ b/lib/odp-util.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2010 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011 Nicira Networks.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,33 +20,17 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
+#include <string.h>
+#include "hash.h"
 #include "openflow/openflow.h"
 #include "openvswitch/datapath-protocol.h"
+#include "util.h"
 
 struct ds;
+struct flow;
+struct ofpbuf;
 
-/* The kernel datapaths limits actions to those that fit in a single page of
- * memory, so there is no point in allocating more than that.  */
-enum { MAX_ODP_ACTIONS = 4096 / sizeof(union odp_action) };
-
-struct odp_actions {
-    size_t n_actions;
-    union odp_action actions[MAX_ODP_ACTIONS];
-};
-
-static inline void
-odp_actions_init(struct odp_actions *actions)
-{
-    actions->n_actions = 0;
-}
-
-union odp_action *odp_actions_add(struct odp_actions *actions, uint16_t type);
-
-static inline bool
-odp_actions_overflow(const struct odp_actions *actions)
-{
-    return actions->n_actions > MAX_ODP_ACTIONS;
-}
+#define ODPP_NONE ((uint16_t) -1)
 
 static inline uint16_t
 ofp_port_to_odp_port(uint16_t ofp_port)
@@ -74,10 +58,45 @@ odp_port_to_ofp_port(uint16_t odp_port)
     }
 }
 
-void format_odp_action(struct ds *, const union odp_action *);
-void format_odp_actions(struct ds *, const union odp_action *actions,
-                        size_t n_actions);
-void format_odp_flow_stats(struct ds *, const struct odp_flow_stats *);
-void format_odp_flow(struct ds *, const struct odp_flow *);
+int odp_action_len(uint16_t type);
+void format_odp_action(struct ds *, const struct nlattr *);
+void format_odp_actions(struct ds *, const struct nlattr *odp_actions,
+                        size_t actions_len);
+
+/* Upper bound on the length of a nlattr-formatted flow key.  The longest
+ * nlattr-formatted flow key would be:
+ *
+ *                         struct  pad  nl hdr  total
+ *                         ------  ---  ------  -----
+ *  ODP_KEY_ATTR_TUN_ID        8    --     4     12
+ *  ODP_KEY_ATTR_IN_PORT       4    --     4      8
+ *  ODP_KEY_ATTR_ETHERNET     12    --     4     16
+ *  ODP_KEY_ATTR_8021Q         4    --     4      8
+ *  ODP_KEY_ATTR_ETHERTYPE     2     2     4      8
+ *  ODP_KEY_ATTR_IPV6         34     2     4     40
+ *  ODP_KEY_ATTR_ICMPV6        2     2     4      8
+ *  ODP_KEY_ATTR_ND           28    --     4     32
+ *  -------------------------------------------------
+ *  total                                       132
+ */
+#define ODPUTIL_FLOW_KEY_BYTES 132
+
+/* This is an imperfect sanity-check that ODPUTIL_FLOW_KEY_BYTES doesn't
+ * need to be updated, but will at least raise awareness when new ODP
+ * key types are added. */
+BUILD_ASSERT_DECL(__ODP_KEY_ATTR_MAX == 14);
+
+/* A buffer with sufficient size and alignment to hold an nlattr-formatted flow
+ * key.  An array of "struct nlattr" might not, in theory, be sufficiently
+ * aligned because it only contains 16-bit types. */
+struct odputil_keybuf {
+    uint32_t keybuf[DIV_ROUND_UP(ODPUTIL_FLOW_KEY_BYTES, 4)];
+};
+
+void odp_flow_key_format(const struct nlattr *, size_t, struct ds *);
+int odp_flow_key_from_string(const char *s, struct ofpbuf *);
+
+void odp_flow_key_from_flow(struct ofpbuf *, const struct flow *);
+int odp_flow_key_to_flow(const struct nlattr *, size_t, struct flow *);
 
 #endif /* odp-util.h */