#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;
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_TRY_RDLOCK(true, (*rule)->up.evict);
+
+void rule_release(struct rule_dpif *rule) OVS_RELEASES(rule->up.evict);
void rule_credit_stats(struct rule_dpif *, const struct dpif_flow_stats *);
+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,