X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=lib%2Fodp-util.h;h=0e4bc0bd0c9db17923df09b32dd64b7188aeb3be;hb=7593daa2473c464cd179420b9c7f68989044fdee;hp=813e29f3ab26cf3477e06c944ab60a7348a58f4d;hpb=ad8ee2c0f3b7d0e53aab749da97a9c78765d74fa;p=openvswitch

diff --git a/lib/odp-util.h b/lib/odp-util.h
index 813e29f3..0e4bc0bd 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.
@@ -28,39 +28,18 @@
 
 struct ds;
 struct flow;
+struct ofpbuf;
 
-enum { MAX_ODP_ACTIONS = 16384 / sizeof(union odp_action) };
-
-/* odp_actions_add() assumes that MAX_ODP_ACTIONS is a power of 2. */
-BUILD_ASSERT_DECL(IS_POW2(MAX_ODP_ACTIONS));
-
-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 OVSP_NONE ((uint16_t) -1)
 
 static inline uint16_t
 ofp_port_to_odp_port(uint16_t ofp_port)
 {
     switch (ofp_port) {
     case OFPP_LOCAL:
-        return ODPP_LOCAL;
+        return OVSP_LOCAL;
     case OFPP_NONE:
-        return ODPP_NONE;
+        return OVSP_NONE;
     default:
         return ofp_port;
     }
@@ -70,37 +49,72 @@ static inline uint16_t
 odp_port_to_ofp_port(uint16_t odp_port)
 {
     switch (odp_port) {
-    case ODPP_LOCAL:
+    case OVSP_LOCAL:
         return OFPP_LOCAL;
-    case ODPP_NONE:
+    case OVSP_NONE:
         return OFPP_NONE;
     default:
         return odp_port;
     }
 }
 
-void format_odp_flow_key(struct ds *, const struct odp_flow_key *);
-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
+ *                         ------  ---  ------  -----
+ *  OVS_KEY_ATTR_TUN_ID        8    --     4     12
+ *  OVS_KEY_ATTR_IN_PORT       4    --     4      8
+ *  OVS_KEY_ATTR_ETHERNET     12    --     4     16
+ *  OVS_KEY_ATTR_8021Q         4    --     4      8
+ *  OVS_KEY_ATTR_ETHERTYPE     2     2     4      8
+ *  OVS_KEY_ATTR_IPV6         34     2     4     40
+ *  OVS_KEY_ATTR_ICMPV6        2     2     4      8
+ *  OVS_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 OVS
+ * datapath key types are added. */
+BUILD_ASSERT_DECL(__OVS_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_from_flow(struct odp_flow_key *, const struct flow *);
-void odp_flow_key_to_flow(const struct odp_flow_key *, struct flow *);
+void odp_flow_key_format(const struct nlattr *, size_t, struct ds *);
+int odp_flow_key_from_string(const char *s, struct ofpbuf *);
 
-static inline bool
-odp_flow_key_equal(const struct odp_flow_key *a, const struct odp_flow_key *b)
-{
-    return !memcmp(a, b, sizeof *a);
-}
+void odp_flow_key_from_flow(struct ofpbuf *, const struct flow *);
+int odp_flow_key_to_flow(const struct nlattr *, size_t, struct flow *);
 
-static inline size_t
-odp_flow_key_hash(const struct odp_flow_key *flow, uint32_t basis)
-{
-    BUILD_ASSERT_DECL(!(sizeof *flow % sizeof(uint32_t)));
-    return hash_words((const uint32_t *) flow,
-                      sizeof *flow / sizeof(uint32_t), basis);
-}
+enum user_action_cookie_type {
+    USER_ACTION_COOKIE_UNSPEC,
+    USER_ACTION_COOKIE_CONTROLLER,   /* Packet for controller. */
+    USER_ACTION_COOKIE_SFLOW,        /* Packet for sFlow sampling. */
+};
+
+/* user_action_cookie is passed as argument to OVS_ACTION_ATTR_USERSPACE.
+ * Since is it passed to kernel as u64, its size has to be 8 bytes. */
+struct user_action_cookie {
+    uint8_t   type;                 /* enum user_action_cookie_type. */
+    uint8_t   n_output;             /* No of output ports. used by sflow. */
+    ovs_be16  vlan_tci;             /* Used by sFlow */
+    uint32_t  data;                 /* Data is len for OFPP_CONTROLLER action.
+                                       For sFlow it is port_ifindex. */
+};
+
+BUILD_ASSERT_DECL(sizeof(struct user_action_cookie) == 8);
 
 #endif /* odp-util.h */