ofproto-dpif: Use sequence number to wake up main thread for

[sliver-openvswitch.git] / lib / odp-util.h

diff --git a/lib/odp-util.h b/lib/odp-util.h
index 2712cb0..0dfbcca 100644 (file)
--- a/lib/odp-util.h
+++ b/lib/odp-util.h
@@ -34,6 +34,37 @@ struct flow_wildcards;
 struct nlattr;
 struct ofpbuf;
 struct simap;
+struct pkt_metadata;
+
+#define SLOW_PATH_REASONS                                               \
+    /* These reasons are mutually exclusive. */                         \
+    SPR(SLOW_CFM,        "cfm",        "Consists of CFM packets")       \
+    SPR(SLOW_BFD,        "bfd",        "Consists of BFD packets")       \
+    SPR(SLOW_LACP,       "lacp",       "Consists of LACP packets")      \
+    SPR(SLOW_STP,        "stp",        "Consists of STP packets")       \
+    SPR(SLOW_CONTROLLER, "controller",                                  \
+        "Sends \"packet-in\" messages to the OpenFlow controller")      \
+    SPR(SLOW_ACTION,     "action",                                      \
+        "Uses action(s) not supported by datapath")
+
+/* Indexes for slow-path reasons.  Client code uses "enum slow_path_reason"
+ * values instead of these, these are just a way to construct those. */
+enum {
+#define SPR(ENUM, STRING, EXPLANATION) ENUM##_INDEX,
+    SLOW_PATH_REASONS
+#undef SPR
+};
+
+/* Reasons why a subfacet might not be fast-pathable.
+ *
+ * Each reason is a separate bit to allow reasons to be combined. */
+enum slow_path_reason {
+#define SPR(ENUM, STRING, EXPLANATION) ENUM = 1 << ENUM##_INDEX,
+    SLOW_PATH_REASONS
+#undef SPR
+};
+
+const char *slow_path_reason_to_explanation(enum slow_path_reason);
 
 #define ODPP_LOCAL ODP_PORT_C(OVSP_LOCAL)
 #define ODPP_NONE  ODP_PORT_C(UINT32_MAX)
@@ -112,13 +143,20 @@ int odp_flow_from_string(const char *s,
                          const struct simap *port_names,
                          struct ofpbuf *, struct ofpbuf *);
 
-void odp_flow_key_from_flow(struct ofpbuf *, const struct flow *,
-                            odp_port_t odp_in_port);
+void odp_flow_key_from_flow(struct ofpbuf *, const struct flow * flow,
+                            const struct flow *mask, odp_port_t odp_in_port);
 void odp_flow_key_from_mask(struct ofpbuf *, const struct flow *mask,
-                            const struct flow *flow, uint32_t odp_in_port);
+                            const struct flow *flow, uint32_t odp_in_port,
+                            size_t max_mpls_depth);
 
 uint32_t odp_flow_key_hash(const struct nlattr *, size_t);
 
+/* Estimated space needed for metadata. */
+enum { ODP_KEY_METADATA_SIZE = 9 * 8 };
+void odp_key_from_pkt_metadata(struct ofpbuf *, const struct pkt_metadata *);
+void odp_key_to_pkt_metadata(const struct nlattr *key, size_t key_len,
+                              struct pkt_metadata *md);
+
 /* How well a kernel-provided flow key (a sequence of OVS_KEY_ATTR_*
  * attributes) matches OVS userspace expectations.
  *
@@ -141,9 +179,10 @@ const char *odp_key_fitness_to_string(enum odp_key_fitness);
 
 void commit_odp_tunnel_action(const struct flow *, struct flow *base,
                               struct ofpbuf *odp_actions);
-void commit_odp_actions(const struct flow *, struct flow *base,
-                        struct ofpbuf *odp_actions, struct flow_wildcards *wc,
-                        int *mpls_depth_delta);
+enum slow_path_reason commit_odp_actions(const struct flow *,
+                                         struct flow *base,
+                                         struct ofpbuf *odp_actions,
+                                         struct flow_wildcards *wc);
 \f
 /* ofproto-dpif interface.
  *
@@ -199,14 +238,4 @@ void odp_put_tunnel_action(const struct flow_tnl *tunnel,
 void odp_put_pkt_mark_action(const uint32_t pkt_mark,
                              struct ofpbuf *odp_actions);
 
-/* Reasons why a subfacet might not be fast-pathable. */
-enum slow_path_reason {
-    SLOW_CFM = 1,               /* CFM packets need per-packet processing. */
-    SLOW_LACP,                  /* LACP packets need per-packet processing. */
-    SLOW_STP,                   /* STP packets need per-packet processing. */
-    SLOW_BFD,                   /* BFD packets need per-packet processing. */
-    SLOW_CONTROLLER,            /* Packets must go to OpenFlow controller. */
-    __SLOW_MAX
-};
-
 #endif /* odp-util.h */