upcall: Configure datapath max-idle through ovs-vsctl.

[sliver-openvswitch.git] / ofproto / ofproto-provider.h

diff --git a/ofproto/ofproto-provider.h b/ofproto/ofproto-provider.h
index 77553f6..d116451 100644 (file)
--- a/ofproto/ofproto-provider.h
+++ b/ofproto/ofproto-provider.h
@@ -260,6 +260,9 @@ struct oftable {
     uint32_t eviction_group_id_basis;
     struct hmap eviction_groups_by_id;
     struct heap eviction_groups_by_size;
+
+    /* Table config: contains enum ofp_table_config; accessed atomically. */
+    atomic_uint config;
 };
 
 /* Assigns TABLE to each oftable, in turn, in OFPROTO.
@@ -336,14 +339,16 @@ struct rule {
 
     /* Protects members marked OVS_GUARDED.
      * Readers only need to hold this mutex.
-     * Writers must hold both this mutex AND ofproto_mutex. */
+     * Writers must hold both this mutex AND ofproto_mutex.
+     * By implication writers can read *without* taking this mutex while they
+     * hold ofproto_mutex. */
     struct ovs_mutex mutex OVS_ACQ_AFTER(ofproto_mutex);
 
     /* Number of references.
      * The classifier owns one reference.
      * Any thread trying to keep a rule from being freed should hold its own
      * reference. */
-    atomic_uint ref_count;
+    struct ovs_refcount ref_count;
 
     /* Operation now in progress, if nonnull. */
     struct ofoperation *pending OVS_GUARDED_BY(ofproto_mutex);
@@ -353,10 +358,6 @@ struct rule {
     ovs_be64 flow_cookie OVS_GUARDED;
     struct hindex_node cookie_node OVS_GUARDED_BY(ofproto_mutex);
 
-    /* Times. */
-    long long int created OVS_GUARDED; /* Creation time. */
-    long long int modified OVS_GUARDED; /* Time of last modification. */
-    long long int used OVS_GUARDED; /* Last use; time created if never used. */
     enum ofputil_flow_mod_flags flags OVS_GUARDED;
 
     /* Timeouts. */
@@ -390,6 +391,13 @@ struct rule {
     /* Optimisation for flow expiry.  In ofproto's 'expirable' list if this
      * rule is expirable, otherwise empty. */
     struct list expirable OVS_GUARDED_BY(ofproto_mutex);
+
+    /* Times.  Last so that they are more likely close to the stats managed
+     * by the provider. */
+    long long int created OVS_GUARDED; /* Creation time. */
+
+    /* Must hold 'mutex' for both read/write, 'ofproto_mutex' not needed. */
+    long long int modified OVS_GUARDED; /* Time of last modification. */
 };
 
 void ofproto_rule_ref(struct rule *);
@@ -423,7 +431,7 @@ rule_is_table_miss(const struct rule *rule)
  * 'rule' is the rule for which 'rule->actions == actions') or that owns a
  * reference to 'actions->ref_count' (or both). */
 struct rule_actions {
-    atomic_uint ref_count;
+    struct ovs_refcount ref_count;
 
     /* These members are immutable: they do not change during the struct's
      * lifetime.  */
@@ -452,17 +460,18 @@ void rule_collection_ref(struct rule_collection *) OVS_REQUIRES(ofproto_mutex);
 void rule_collection_unref(struct rule_collection *);
 void rule_collection_destroy(struct rule_collection *);
 
-/* Threshold at which to begin flow table eviction. Only affects the
- * ofproto-dpif implementation */
-extern unsigned flow_eviction_threshold;
+/* Limits the number of flows allowed in the datapath. Only affects the
+ * ofproto-dpif implementation. */
+extern unsigned ofproto_flow_limit;
 
-/* Number of upcall handler threads. Only affects the ofproto-dpif
- * implementation. */
-extern size_t n_handlers;
+/* Maximum idle time (in ms) for flows to be cached in the datapath.
+ * Revalidators may expire flows more quickly than the configured value based
+ * on system load and other factors. This variable is subject to change. */
+extern unsigned ofproto_max_idle;
 
-/* Determines which model to use for handling misses in the ofproto-dpif
- * implementation */
-extern enum ofproto_flow_miss_model flow_miss_model;
+/* Number of upcall handler and revalidator threads. Only affects the
+ * ofproto-dpif implementation. */
+extern size_t n_handlers, n_revalidators;
 
 static inline struct rule *
 rule_from_cls_rule(const struct cls_rule *cls_rule)
@@ -933,8 +942,9 @@ struct ofproto_class {
     void (*port_reconfigured)(struct ofport *ofport,
                               enum ofputil_port_config old_config);
 
-    /* Looks up a port named 'devname' in 'ofproto'.  On success, initializes
-     * '*port' appropriately.
+    /* Looks up a port named 'devname' in 'ofproto'.  On success, returns 0 and
+     * initializes '*port' appropriately. Otherwise, returns a positive errno
+     * value.
      *
      * The caller owns the data in 'port' and must free it with
      * ofproto_port_destroy() when it is no longer needed. */
@@ -1276,7 +1286,7 @@ struct ofproto_class {
      * in '*byte_count'.  UINT64_MAX indicates that the packet count or byte
      * count is unknown. */
     void (*rule_get_stats)(struct rule *rule, uint64_t *packet_count,
-                           uint64_t *byte_count)
+                           uint64_t *byte_count, long long int *used)
         /* OVS_EXCLUDED(ofproto_mutex) */;
 
     /* Applies the actions in 'rule' to 'packet'.  (This implements sending