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

diff --git a/ofproto/ofproto-dpif.h b/ofproto/ofproto-dpif.h
index f683281..6a4ae07 100644 (file)
--- a/ofproto/ofproto-dpif.h
+++ b/ofproto/ofproto-dpif.h
@@ -18,13 +18,45 @@
 #include <stdint.h>
 
 #include "hmapx.h"
+#include "odp-util.h"
 #include "ofproto/ofproto-provider.h"
+#include "ovs-thread.h"
 #include "timer.h"
 #include "util.h"
+#include "ovs-thread.h"
 
 union user_action_cookie;
 struct ofproto_dpif;
 struct ofport_dpif;
+struct dpif_backer;
+
+/* Ofproto-dpif -- DPIF based ofproto implementation.
+ *
+ * Ofproto-dpif provides an ofproto implementation for those platforms which
+ * implement the netdev and dpif interface defined in netdev.h and dpif.h.  The
+ * most important of which is the Linux Kernel Module (dpif-linux), but
+ * alternatives are supported such as a userspace only implementation
+ * (dpif-netdev), and a dummy implementation used for unit testing.
+ *
+ * Ofproto-dpif is divided into three major chunks.
+ *
+ * - ofproto-dpif.c
+ *   The main ofproto-dpif module is responsible for implementing the
+ *   provider interface, installing and removing datapath flows, maintaining
+ *   packet statistics, running protocols (BFD, LACP, STP, etc), and
+ *   configuring relevant submodules.
+ *
+ * - ofproto-dpif-upcall.c
+ *   Ofproto-dpif-upcall is responsible for retrieving upcalls from the kernel,
+ *   processing miss upcalls, and handing more complex ones up to the main
+ *   ofproto-dpif module.  Miss upcall processing boils down to figuring out
+ *   what each packet's actions are, executing them (i.e. asking the kernel to
+ *   forward it), and handing it up to ofproto-dpif to decided whether or not
+ *   to install a kernel flow.
+ *
+ * - ofproto-dpif-xlate.c
+ *   Ofproto-dpif-xlate is responsible for translating translating OpenFlow
+ *   actions into datapath actions. */
 
 struct rule_dpif {
     struct rule up;
@@ -42,8 +74,9 @@ struct rule_dpif {
      *     packet_count or byte_count member or that can be obtained from the
      *     datapath by, e.g., dpif_flow_get() for any subfacet.
      */
-    uint64_t packet_count;       /* Number of packets received. */
-    uint64_t byte_count;         /* Number of bytes received. */
+    struct ovs_mutex stats_mutex;
+    uint64_t packet_count OVS_GUARDED;  /* Number of packets received. */
+    uint64_t byte_count OVS_GUARDED;    /* Number of bytes received. */
 };
 
 static inline struct rule_dpif *rule_dpif_cast(const struct rule *rule)
@@ -51,40 +84,33 @@ static inline struct rule_dpif *rule_dpif_cast(const struct rule *rule)
     return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
 }
 
-struct rule_dpif *rule_dpif_lookup_in_table(struct ofproto_dpif *,
-                                            const struct flow *,
-                                            struct flow_wildcards *,
-                                            uint8_t table_id);
+void rule_dpif_lookup(struct ofproto_dpif *, const struct flow *,
+                      struct flow_wildcards *, struct rule_dpif **rule)
+    OVS_ACQ_RDLOCK((*rule)->up.evict);
 
-struct rule_dpif *rule_dpif_miss_rule(struct ofproto_dpif *ofproto,
-                                      const struct flow *);
+bool rule_dpif_lookup_in_table(struct ofproto_dpif *, const struct flow *,
+                               struct flow_wildcards *, uint8_t table_id,
+                               struct rule_dpif **rule)
+    OVS_ACQ_RDLOCK((*rule)->up.evict);
 
-void rule_credit_stats(struct rule_dpif *, const struct dpif_flow_stats *);
-
-void ofproto_trace(struct ofproto_dpif *, const struct flow *,
-                   const struct ofpbuf *packet, struct ds *);
+void rule_release(struct rule_dpif *rule) OVS_RELEASES(rule->up.evict);
 
-size_t put_userspace_action(const struct ofproto_dpif *,
-                            struct ofpbuf *odp_actions, const struct flow *,
-                            const union user_action_cookie *,
-                            const size_t cookie_size);
+void rule_credit_stats(struct rule_dpif *, const struct dpif_flow_stats *);
 
-bool stp_should_process_flow(const struct flow *, struct flow_wildcards *);
-void stp_process_packet(const struct ofport_dpif *,
-                        const struct ofpbuf *packet);
+struct rule_dpif *choose_miss_rule(enum ofputil_port_config,
+                                   struct rule_dpif *miss_rule,
+                                   struct rule_dpif *no_packet_in_rule);
 
 bool ofproto_has_vlan_splinters(const struct ofproto_dpif *);
 ofp_port_t vsp_realdev_to_vlandev(const struct ofproto_dpif *,
                                   ofp_port_t realdev_ofp_port,
                                   ovs_be16 vlan_tci);
-
-bool ofproto_dpif_dscp_from_priority(const struct ofport_dpif *,
-                                     uint32_t priority, uint8_t *dscp);
-int ofproto_dpif_queue_to_priority(const struct ofproto_dpif *,
-                                   uint32_t queue_id, uint32_t *priority);
+bool vsp_adjust_flow(const struct ofproto_dpif *, struct flow *);
 
 void ofproto_dpif_send_packet_in(struct ofproto_dpif *,
                                  struct ofputil_packet_in *pin);
-int ofproto_dpif_flow_mod(struct ofproto_dpif *, struct ofputil_flow_mod *);
+void ofproto_dpif_flow_mod(struct ofproto_dpif *, struct ofputil_flow_mod *);
+
+struct ofport_dpif *odp_port_to_ofport(const struct dpif_backer *, odp_port_t);
 
 #endif /* ofproto-dpif.h */