ofproto-dpif: xlate actions once with subfacets.
[sliver-openvswitch.git] / ofproto / ofproto-dpif.c
index d66c500..18c5b7d 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
+ * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,7 +20,6 @@
 
 #include <errno.h>
 
-#include "autopath.h"
 #include "bond.h"
 #include "bundle.h"
 #include "byte-order.h"
@@ -36,6 +35,7 @@
 #include "mac-learning.h"
 #include "meta-flow.h"
 #include "multipath.h"
+#include "netdev-vport.h"
 #include "netdev.h"
 #include "netlink.h"
 #include "nx-match.h"
@@ -49,7 +49,9 @@
 #include "ofproto-dpif-sflow.h"
 #include "poll-loop.h"
 #include "simap.h"
+#include "smap.h"
 #include "timer.h"
+#include "tunnel.h"
 #include "unaligned.h"
 #include "unixctl.h"
 #include "vlan-bitmap.h"
@@ -75,6 +77,8 @@ BUILD_ASSERT_DECL(N_TABLES >= 2 && N_TABLES <= 255);
 
 struct ofport_dpif;
 struct ofproto_dpif;
+struct flow_miss;
+struct facet;
 
 struct rule_dpif {
     struct rule up;
@@ -110,14 +114,14 @@ static struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *,
 static struct rule_dpif *rule_dpif_lookup__(struct ofproto_dpif *,
                                             const struct flow *,
                                             uint8_t table);
+static struct rule_dpif *rule_dpif_miss_rule(struct ofproto_dpif *ofproto,
+                                             const struct flow *flow);
 
 static void rule_credit_stats(struct rule_dpif *,
                               const struct dpif_flow_stats *);
-static void flow_push_stats(struct rule_dpif *, const struct flow *,
-                            const struct dpif_flow_stats *);
+static void flow_push_stats(struct facet *, const struct dpif_flow_stats *);
 static tag_type rule_calculate_tag(const struct flow *,
-                                   const struct flow_wildcards *,
-                                   uint32_t basis);
+                                   const struct minimask *, uint32_t basis);
 static void rule_invalidate(const struct rule_dpif *);
 
 #define MAX_MIRRORS 32
@@ -212,6 +216,11 @@ struct action_xlate_ctx {
      * this flow when actions change header fields. */
     struct flow flow;
 
+    /* stack for the push and pop actions.
+     * Each stack element is of the type "union mf_subvalue". */
+    struct ofpbuf stack;
+    union mf_subvalue init_stack[1024 / sizeof(union mf_subvalue)];
+
     /* The packet corresponding to 'flow', or a null pointer if we are
      * revalidating without a packet to refer to. */
     const struct ofpbuf *packet;
@@ -276,15 +285,33 @@ struct action_xlate_ctx {
     uint32_t orig_skb_priority; /* Priority when packet arrived. */
     uint8_t table_id;           /* OpenFlow table ID where flow was found. */
     uint32_t sflow_n_outputs;   /* Number of output ports. */
-    uint16_t sflow_odp_port;    /* Output port for composing sFlow action. */
+    uint32_t sflow_odp_port;    /* Output port for composing sFlow action. */
     uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */
     bool exit;                  /* No further actions should be processed. */
-    struct flow orig_flow;      /* Copy of original flow. */
+};
+
+/* Initial values of fields of the packet that may be changed during
+ * flow processing and needed later. */
+struct initial_vals {
+   /* This is the value of vlan_tci in the packet as actually received from
+    * dpif.  This is the same as the facet's flow.vlan_tci unless the packet
+    * was received via a VLAN splinter.  In that case, this value is 0
+    * (because the packet as actually received from the dpif had no 802.1Q
+    * tag) but the facet's flow.vlan_tci is set to the VLAN that the splinter
+    * represents.
+    *
+    * This member should be removed when the VLAN splinters feature is no
+    * longer needed. */
+    ovs_be16 vlan_tci;
+
+    /* If received on a tunnel, the IP TOS value of the tunnel. */
+    uint8_t tunnel_ip_tos;
 };
 
 static void action_xlate_ctx_init(struct action_xlate_ctx *,
                                   struct ofproto_dpif *, const struct flow *,
-                                  ovs_be16 initial_tci, struct rule_dpif *,
+                                  const struct initial_vals *initial_vals,
+                                  struct rule_dpif *,
                                   uint8_t tcp_flags, const struct ofpbuf *);
 static void xlate_actions(struct action_xlate_ctx *,
                           const struct ofpact *ofpacts, size_t ofpacts_len,
@@ -292,6 +319,8 @@ static void xlate_actions(struct action_xlate_ctx *,
 static void xlate_actions_for_side_effects(struct action_xlate_ctx *,
                                            const struct ofpact *ofpacts,
                                            size_t ofpacts_len);
+static void xlate_table_action(struct action_xlate_ctx *, uint16_t in_port,
+                               uint8_t table_id, bool may_packet_in);
 
 static size_t put_userspace_action(const struct ofproto_dpif *,
                                    struct ofpbuf *odp_actions,
@@ -336,11 +365,6 @@ struct subfacet {
     struct list list_node;      /* In struct facet's 'facets' list. */
     struct facet *facet;        /* Owning facet. */
 
-    /* Key.
-     *
-     * To save memory in the common case, 'key' is NULL if 'key_fitness' is
-     * ODP_FIT_PERFECT, that is, odp_flow_key_from_flow() can accurately
-     * regenerate the ODP flow key from ->facet->flow. */
     enum odp_key_fitness key_fitness;
     struct nlattr *key;
     int key_len;
@@ -360,21 +384,28 @@ struct subfacet {
     enum slow_path_reason slow; /* 0 if fast path may be used. */
     enum subfacet_path path;    /* Installed in datapath? */
 
-    /* This value is normally the same as ->facet->flow.vlan_tci.  Only VLAN
-     * splinters can cause it to differ.  This value should be removed when
-     * the VLAN splinters feature is no longer needed.  */
-    ovs_be16 initial_tci;       /* Initial VLAN TCI value. */
+    /* Initial values of the packet that may be needed later. */
+    struct initial_vals initial_vals;
+
+    /* Datapath port the packet arrived on.  This is needed to remove
+     * flows for ports that are no longer part of the bridge.  Since the
+     * flow definition only has the OpenFlow port number and the port is
+     * no longer part of the bridge, we can't determine the datapath port
+     * number needed to delete the flow from the datapath. */
+    uint32_t odp_in_port;
 };
 
-static struct subfacet *subfacet_create(struct facet *, enum odp_key_fitness,
-                                        const struct nlattr *key,
-                                        size_t key_len, ovs_be16 initial_tci);
+#define SUBFACET_DESTROY_MAX_BATCH 50
+
+static struct subfacet *subfacet_create(struct facet *, struct flow_miss *miss,
+                                        long long int now);
 static struct subfacet *subfacet_find(struct ofproto_dpif *,
-                                      const struct nlattr *key, size_t key_len);
+                                      const struct nlattr *key, size_t key_len,
+                                      uint32_t key_hash);
 static void subfacet_destroy(struct subfacet *);
 static void subfacet_destroy__(struct subfacet *);
-static void subfacet_get_key(struct subfacet *, struct odputil_keybuf *,
-                             struct ofpbuf *key);
+static void subfacet_destroy_batch(struct ofproto_dpif *,
+                                   struct subfacet **, int n);
 static void subfacet_reset_dp_stats(struct subfacet *,
                                     struct dpif_flow_stats *);
 static void subfacet_update_time(struct subfacet *, long long int used);
@@ -456,7 +487,9 @@ struct facet {
 
     /* Storage for a single subfacet, to reduce malloc() time and space
      * overhead.  (A facet always has at least one subfacet and in the common
-     * case has exactly one subfacet.) */
+     * case has exactly one subfacet.  However, 'one_subfacet' may not
+     * always be valid, since it could have been removed after newer
+     * subfacets were pushed onto the 'subfacets' list.) */
     struct subfacet one_subfacet;
 };
 
@@ -480,9 +513,12 @@ static void facet_push_stats(struct facet *);
 static void facet_learn(struct facet *);
 static void facet_account(struct facet *);
 
+static struct subfacet *facet_get_subfacet(struct facet *);
+
 static bool facet_is_controller_flow(struct facet *);
 
 struct ofport_dpif {
+    struct hmap_node odp_port_node; /* In dpif_backer's "odp_to_ofport_map". */
     struct ofport up;
 
     uint32_t odp_port;
@@ -490,9 +526,9 @@ struct ofport_dpif {
     struct list bundle_node;    /* In struct ofbundle's "ports" list. */
     struct cfm *cfm;            /* Connectivity Fault Management, if any. */
     tag_type tag;               /* Tag associated with this port. */
-    uint32_t bond_stable_id;    /* stable_id to use as bond slave, or 0. */
     bool may_enable;            /* May be enabled in bonds. */
     long long int carrier_seq;  /* Carrier status changes. */
+    struct tnl_port *tnl_port;  /* Tunnel handle, or null. */
 
     /* Spanning tree. */
     struct stp_port *stp_port;  /* Spanning Tree Protocol, if any. */
@@ -541,10 +577,15 @@ static bool vsp_adjust_flow(const struct ofproto_dpif *, struct flow *);
 static void vsp_remove(struct ofport_dpif *);
 static void vsp_add(struct ofport_dpif *, uint16_t realdev_ofp_port, int vid);
 
+static uint32_t ofp_port_to_odp_port(const struct ofproto_dpif *,
+                                     uint16_t ofp_port);
+static uint16_t odp_port_to_ofp_port(const struct ofproto_dpif *,
+                                     uint32_t odp_port);
+
 static struct ofport_dpif *
 ofport_dpif_cast(const struct ofport *ofport)
 {
-    assert(ofport->ofproto->ofproto_class == &ofproto_dpif_class);
+    ovs_assert(ofport->ofproto->ofproto_class == &ofproto_dpif_class);
     return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL;
 }
 
@@ -591,11 +632,46 @@ COVERAGE_DEFINE(rev_port_toggled);
 COVERAGE_DEFINE(rev_flow_table);
 COVERAGE_DEFINE(rev_inconsistency);
 
+/* Drop keys are odp flow keys which have drop flows installed in the kernel.
+ * These are datapath flows which have no associated ofproto, if they did we
+ * would use facets. */
+struct drop_key {
+    struct hmap_node hmap_node;
+    struct nlattr *key;
+    size_t key_len;
+};
+
+/* All datapaths of a given type share a single dpif backer instance. */
+struct dpif_backer {
+    char *type;
+    int refcount;
+    struct dpif *dpif;
+    struct timer next_expiration;
+    struct hmap odp_to_ofport_map; /* ODP port to ofport mapping. */
+
+    struct simap tnl_backers;      /* Set of dpif ports backing tunnels. */
+
+    /* Facet revalidation flags applying to facets which use this backer. */
+    enum revalidate_reason need_revalidate; /* Revalidate every facet. */
+    struct tag_set revalidate_set; /* Revalidate only matching facets. */
+
+    struct hmap drop_keys; /* Set of dropped odp keys. */
+};
+
+/* All existing ofproto_backer instances, indexed by ofproto->up.type. */
+static struct shash all_dpif_backers = SHASH_INITIALIZER(&all_dpif_backers);
+
+static void drop_key_clear(struct dpif_backer *);
+static struct ofport_dpif *
+odp_port_to_ofport(const struct dpif_backer *, uint32_t odp_port);
+
+static void dpif_stats_update_hit_count(struct ofproto_dpif *ofproto,
+                                        uint64_t delta);
+
 struct ofproto_dpif {
     struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
     struct ofproto up;
-    struct dpif *dpif;
-    int max_ports;
+    struct dpif_backer *backer;
 
     /* Special OpenFlow rules. */
     struct rule_dpif *miss_rule; /* Sends flow table misses to controller. */
@@ -613,9 +689,6 @@ struct ofproto_dpif {
     bool has_mirrors;
     bool has_bonded_bundles;
 
-    /* Expiration. */
-    struct timer next_expiration;
-
     /* Facets. */
     struct hmap facets;
     struct hmap subfacets;
@@ -623,8 +696,6 @@ struct ofproto_dpif {
 
     /* Revalidation. */
     struct table_dpif tables[N_TABLES];
-    enum revalidate_reason need_revalidate;
-    struct tag_set revalidate_set;
 
     /* Support for debugging async flow mods. */
     struct list completions;
@@ -640,6 +711,16 @@ struct ofproto_dpif {
     /* VLAN splinters. */
     struct hmap realdev_vid_map; /* (realdev,vid) -> vlandev. */
     struct hmap vlandev_map;     /* vlandev -> (realdev,vid). */
+
+    /* Ports. */
+    struct sset ports;             /* Set of standard port names. */
+    struct sset ghost_ports;       /* Ports with no datapath port. */
+    struct sset port_poll_set;     /* Queued names for port_poll() reply. */
+    int port_poll_errno;           /* Last errno for port_poll() reply. */
+
+    /* Per ofproto's dpif stats. */
+    uint64_t n_hit;
+    uint64_t n_missed;
 };
 
 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"?  (Useful only
@@ -654,7 +735,7 @@ static void ofproto_dpif_unixctl_init(void);
 static struct ofproto_dpif *
 ofproto_dpif_cast(const struct ofproto *ofproto)
 {
-    assert(ofproto->ofproto_class == &ofproto_dpif_class);
+    ovs_assert(ofproto->ofproto_class == &ofproto_dpif_class);
     return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
 }
 
@@ -663,8 +744,8 @@ static struct ofport_dpif *get_ofp_port(const struct ofproto_dpif *,
 static struct ofport_dpif *get_odp_port(const struct ofproto_dpif *,
                                         uint32_t odp_port);
 static void ofproto_trace(struct ofproto_dpif *, const struct flow *,
-                          const struct ofpbuf *, ovs_be16 initial_tci,
-                          struct ds *);
+                          const struct ofpbuf *,
+                          const struct initial_vals *, struct ds *);
 
 /* Packet processing. */
 static void update_learning_table(struct ofproto_dpif *,
@@ -672,10 +753,10 @@ static void update_learning_table(struct ofproto_dpif *,
                                   struct ofbundle *);
 /* Upcalls. */
 #define FLOW_MISS_MAX_BATCH 50
-static int handle_upcalls(struct ofproto_dpif *, unsigned int max_batch);
+static int handle_upcalls(struct dpif_backer *, unsigned int max_batch);
 
 /* Flow expiration. */
-static int expire(struct ofproto_dpif *);
+static int expire(struct dpif_backer *);
 
 /* NetFlow. */
 static void send_netflow_active_timeouts(struct ofproto_dpif *);
@@ -689,9 +770,30 @@ static void add_mirror_actions(struct action_xlate_ctx *ctx,
                                const struct flow *flow);
 /* Global variables. */
 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+
+/* Initial mappings of port to bridge mappings. */
+static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports);
 \f
 /* Factory functions. */
 
+static void
+init(const struct shash *iface_hints)
+{
+    struct shash_node *node;
+
+    /* Make a local copy, since we don't own 'iface_hints' elements. */
+    SHASH_FOR_EACH(node, iface_hints) {
+        const struct iface_hint *orig_hint = node->data;
+        struct iface_hint *new_hint = xmalloc(sizeof *new_hint);
+
+        new_hint->br_name = xstrdup(orig_hint->br_name);
+        new_hint->br_type = xstrdup(orig_hint->br_type);
+        new_hint->ofp_port = orig_hint->ofp_port;
+
+        shash_add(&init_ofp_ports, node->name, new_hint);
+    }
+}
+
 static void
 enumerate_types(struct sset *types)
 {
@@ -701,7 +803,17 @@ enumerate_types(struct sset *types)
 static int
 enumerate_names(const char *type, struct sset *names)
 {
-    return dp_enumerate_names(type, names);
+    struct ofproto_dpif *ofproto;
+
+    sset_clear(names);
+    HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
+        if (strcmp(type, ofproto->up.type)) {
+            continue;
+        }
+        sset_add(names, ofproto->up.name);
+    }
+
+    return 0;
 }
 
 static int
@@ -718,6 +830,246 @@ del(const char *type, const char *name)
     return error;
 }
 \f
+static const char *
+port_open_type(const char *datapath_type, const char *port_type)
+{
+    return dpif_port_open_type(datapath_type, port_type);
+}
+
+/* Type functions. */
+
+static struct ofproto_dpif *
+lookup_ofproto_dpif_by_port_name(const char *name)
+{
+    struct ofproto_dpif *ofproto;
+
+    HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
+        if (sset_contains(&ofproto->ports, name)) {
+            return ofproto;
+        }
+    }
+
+    return NULL;
+}
+
+static int
+type_run(const char *type)
+{
+    struct dpif_backer *backer;
+    char *devname;
+    int error;
+
+    backer = shash_find_data(&all_dpif_backers, type);
+    if (!backer) {
+        /* This is not necessarily a problem, since backers are only
+         * created on demand. */
+        return 0;
+    }
+
+    dpif_run(backer->dpif);
+
+    if (backer->need_revalidate
+        || !tag_set_is_empty(&backer->revalidate_set)) {
+        struct tag_set revalidate_set = backer->revalidate_set;
+        bool need_revalidate = backer->need_revalidate;
+        struct ofproto_dpif *ofproto;
+        struct simap_node *node;
+        struct simap tmp_backers;
+
+        /* Handle tunnel garbage collection. */
+        simap_init(&tmp_backers);
+        simap_swap(&backer->tnl_backers, &tmp_backers);
+
+        HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
+            struct ofport_dpif *iter;
+
+            if (backer != ofproto->backer) {
+                continue;
+            }
+
+            HMAP_FOR_EACH (iter, up.hmap_node, &ofproto->up.ports) {
+                const char *dp_port;
+
+                if (!iter->tnl_port) {
+                    continue;
+                }
+
+                dp_port = netdev_vport_get_dpif_port(iter->up.netdev);
+                node = simap_find(&tmp_backers, dp_port);
+                if (node) {
+                    simap_put(&backer->tnl_backers, dp_port, node->data);
+                    simap_delete(&tmp_backers, node);
+                    node = simap_find(&backer->tnl_backers, dp_port);
+                } else {
+                    node = simap_find(&backer->tnl_backers, dp_port);
+                    if (!node) {
+                        uint32_t odp_port = UINT32_MAX;
+
+                        if (!dpif_port_add(backer->dpif, iter->up.netdev,
+                                           &odp_port)) {
+                            simap_put(&backer->tnl_backers, dp_port, odp_port);
+                            node = simap_find(&backer->tnl_backers, dp_port);
+                        }
+                    }
+                }
+
+                iter->odp_port = node ? node->data : OVSP_NONE;
+                if (tnl_port_reconfigure(&iter->up, iter->odp_port,
+                                         &iter->tnl_port)) {
+                    backer->need_revalidate = REV_RECONFIGURE;
+                }
+            }
+        }
+
+        SIMAP_FOR_EACH (node, &tmp_backers) {
+            dpif_port_del(backer->dpif, node->data);
+        }
+        simap_destroy(&tmp_backers);
+
+        switch (backer->need_revalidate) {
+        case REV_RECONFIGURE:   COVERAGE_INC(rev_reconfigure);   break;
+        case REV_STP:           COVERAGE_INC(rev_stp);           break;
+        case REV_PORT_TOGGLED:  COVERAGE_INC(rev_port_toggled);  break;
+        case REV_FLOW_TABLE:    COVERAGE_INC(rev_flow_table);    break;
+        case REV_INCONSISTENCY: COVERAGE_INC(rev_inconsistency); break;
+        }
+
+        if (backer->need_revalidate) {
+            /* Clear the drop_keys in case we should now be accepting some
+             * formerly dropped flows. */
+            drop_key_clear(backer);
+        }
+
+        /* Clear the revalidation flags. */
+        tag_set_init(&backer->revalidate_set);
+        backer->need_revalidate = 0;
+
+        HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
+            struct facet *facet, *next;
+
+            if (ofproto->backer != backer) {
+                continue;
+            }
+
+            HMAP_FOR_EACH_SAFE (facet, next, hmap_node, &ofproto->facets) {
+                if (need_revalidate
+                    || tag_set_intersects(&revalidate_set, facet->tags)) {
+                    facet_revalidate(facet);
+                }
+            }
+        }
+    }
+
+    if (timer_expired(&backer->next_expiration)) {
+        int delay = expire(backer);
+        timer_set_duration(&backer->next_expiration, delay);
+    }
+
+    /* Check for port changes in the dpif. */
+    while ((error = dpif_port_poll(backer->dpif, &devname)) == 0) {
+        struct ofproto_dpif *ofproto;
+        struct dpif_port port;
+
+        /* Don't report on the datapath's device. */
+        if (!strcmp(devname, dpif_base_name(backer->dpif))) {
+            goto next;
+        }
+
+        HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node,
+                       &all_ofproto_dpifs) {
+            if (simap_contains(&ofproto->backer->tnl_backers, devname)) {
+                goto next;
+            }
+        }
+
+        ofproto = lookup_ofproto_dpif_by_port_name(devname);
+        if (dpif_port_query_by_name(backer->dpif, devname, &port)) {
+            /* The port was removed.  If we know the datapath,
+             * report it through poll_set().  If we don't, it may be
+             * notifying us of a removal we initiated, so ignore it.
+             * If there's a pending ENOBUFS, let it stand, since
+             * everything will be reevaluated. */
+            if (ofproto && ofproto->port_poll_errno != ENOBUFS) {
+                sset_add(&ofproto->port_poll_set, devname);
+                ofproto->port_poll_errno = 0;
+            }
+        } else if (!ofproto) {
+            /* The port was added, but we don't know with which
+             * ofproto we should associate it.  Delete it. */
+            dpif_port_del(backer->dpif, port.port_no);
+        }
+        dpif_port_destroy(&port);
+
+    next:
+        free(devname);
+    }
+
+    if (error != EAGAIN) {
+        struct ofproto_dpif *ofproto;
+
+        /* There was some sort of error, so propagate it to all
+         * ofprotos that use this backer. */
+        HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node,
+                       &all_ofproto_dpifs) {
+            if (ofproto->backer == backer) {
+                sset_clear(&ofproto->port_poll_set);
+                ofproto->port_poll_errno = error;
+            }
+        }
+    }
+
+    return 0;
+}
+
+static int
+type_run_fast(const char *type)
+{
+    struct dpif_backer *backer;
+    unsigned int work;
+
+    backer = shash_find_data(&all_dpif_backers, type);
+    if (!backer) {
+        /* This is not necessarily a problem, since backers are only
+         * created on demand. */
+        return 0;
+    }
+
+    /* Handle one or more batches of upcalls, until there's nothing left to do
+     * or until we do a fixed total amount of work.
+     *
+     * We do work in batches because it can be much cheaper to set up a number
+     * of flows and fire off their patches all at once.  We do multiple batches
+     * because in some cases handling a packet can cause another packet to be
+     * queued almost immediately as part of the return flow.  Both
+     * optimizations can make major improvements on some benchmarks and
+     * presumably for real traffic as well. */
+    work = 0;
+    while (work < FLOW_MISS_MAX_BATCH) {
+        int retval = handle_upcalls(backer, FLOW_MISS_MAX_BATCH - work);
+        if (retval <= 0) {
+            return -retval;
+        }
+        work += retval;
+    }
+
+    return 0;
+}
+
+static void
+type_wait(const char *type)
+{
+    struct dpif_backer *backer;
+
+    backer = shash_find_data(&all_dpif_backers, type);
+    if (!backer) {
+        /* This is not necessarily a problem, since backers are only
+         * created on demand. */
+        return;
+    }
+
+    timer_wait(&backer->next_expiration);
+}
+\f
 /* Basic life-cycle. */
 
 static int add_internal_flows(struct ofproto_dpif *);
@@ -736,33 +1088,155 @@ dealloc(struct ofproto *ofproto_)
     free(ofproto);
 }
 
-static int
-construct(struct ofproto *ofproto_)
+static void
+close_dpif_backer(struct dpif_backer *backer)
 {
-    struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
-    const char *name = ofproto->up.name;
+    struct shash_node *node;
+
+    ovs_assert(backer->refcount > 0);
+
+    if (--backer->refcount) {
+        return;
+    }
+
+    drop_key_clear(backer);
+    hmap_destroy(&backer->drop_keys);
+
+    simap_destroy(&backer->tnl_backers);
+    hmap_destroy(&backer->odp_to_ofport_map);
+    node = shash_find(&all_dpif_backers, backer->type);
+    free(backer->type);
+    shash_delete(&all_dpif_backers, node);
+    dpif_close(backer->dpif);
+
+    free(backer);
+}
+
+/* Datapath port slated for removal from datapath. */
+struct odp_garbage {
+    struct list list_node;
+    uint32_t odp_port;
+};
+
+static int
+open_dpif_backer(const char *type, struct dpif_backer **backerp)
+{
+    struct dpif_backer *backer;
+    struct dpif_port_dump port_dump;
+    struct dpif_port port;
+    struct shash_node *node;
+    struct list garbage_list;
+    struct odp_garbage *garbage, *next;
+    struct sset names;
+    char *backer_name;
+    const char *name;
     int error;
-    int i;
 
-    error = dpif_create_and_open(name, ofproto->up.type, &ofproto->dpif);
+    backer = shash_find_data(&all_dpif_backers, type);
+    if (backer) {
+        backer->refcount++;
+        *backerp = backer;
+        return 0;
+    }
+
+    backer_name = xasprintf("ovs-%s", type);
+
+    /* Remove any existing datapaths, since we assume we're the only
+     * userspace controlling the datapath. */
+    sset_init(&names);
+    dp_enumerate_names(type, &names);
+    SSET_FOR_EACH(name, &names) {
+        struct dpif *old_dpif;
+
+        /* Don't remove our backer if it exists. */
+        if (!strcmp(name, backer_name)) {
+            continue;
+        }
+
+        if (dpif_open(name, type, &old_dpif)) {
+            VLOG_WARN("couldn't open old datapath %s to remove it", name);
+        } else {
+            dpif_delete(old_dpif);
+            dpif_close(old_dpif);
+        }
+    }
+    sset_destroy(&names);
+
+    backer = xmalloc(sizeof *backer);
+
+    error = dpif_create_and_open(backer_name, type, &backer->dpif);
+    free(backer_name);
     if (error) {
-        VLOG_ERR("failed to open datapath %s: %s", name, strerror(error));
+        VLOG_ERR("failed to open datapath of type %s: %s", type,
+                 strerror(error));
+        free(backer);
         return error;
     }
 
-    ofproto->max_ports = dpif_get_max_ports(ofproto->dpif);
-    ofproto->n_matches = 0;
+    backer->type = xstrdup(type);
+    backer->refcount = 1;
+    hmap_init(&backer->odp_to_ofport_map);
+    hmap_init(&backer->drop_keys);
+    timer_set_duration(&backer->next_expiration, 1000);
+    backer->need_revalidate = 0;
+    simap_init(&backer->tnl_backers);
+    tag_set_init(&backer->revalidate_set);
+    *backerp = backer;
 
-    dpif_flow_flush(ofproto->dpif);
-    dpif_recv_purge(ofproto->dpif);
+    dpif_flow_flush(backer->dpif);
 
-    error = dpif_recv_set(ofproto->dpif, true);
+    /* Loop through the ports already on the datapath and remove any
+     * that we don't need anymore. */
+    list_init(&garbage_list);
+    dpif_port_dump_start(&port_dump, backer->dpif);
+    while (dpif_port_dump_next(&port_dump, &port)) {
+        node = shash_find(&init_ofp_ports, port.name);
+        if (!node && strcmp(port.name, dpif_base_name(backer->dpif))) {
+            garbage = xmalloc(sizeof *garbage);
+            garbage->odp_port = port.port_no;
+            list_push_front(&garbage_list, &garbage->list_node);
+        }
+    }
+    dpif_port_dump_done(&port_dump);
+
+    LIST_FOR_EACH_SAFE (garbage, next, list_node, &garbage_list) {
+        dpif_port_del(backer->dpif, garbage->odp_port);
+        list_remove(&garbage->list_node);
+        free(garbage);
+    }
+
+    shash_add(&all_dpif_backers, type, backer);
+
+    error = dpif_recv_set(backer->dpif, true);
+    if (error) {
+        VLOG_ERR("failed to listen on datapath of type %s: %s",
+                 type, strerror(error));
+        close_dpif_backer(backer);
+        return error;
+    }
+
+    return error;
+}
+
+static int
+construct(struct ofproto *ofproto_)
+{
+    struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+    struct shash_node *node, *next;
+    int max_ports;
+    int error;
+    int i;
+
+    error = open_dpif_backer(ofproto->up.type, &ofproto->backer);
     if (error) {
-        VLOG_ERR("failed to listen on datapath %s: %s", name, strerror(error));
-        dpif_close(ofproto->dpif);
         return error;
     }
 
+    max_ports = dpif_get_max_ports(ofproto->backer->dpif);
+    ofproto_init_max_ports(ofproto_, MIN(max_ports, OFPP_MAX));
+
+    ofproto->n_matches = 0;
+
     ofproto->netflow = NULL;
     ofproto->sflow = NULL;
     ofproto->stp = NULL;
@@ -773,8 +1247,6 @@ construct(struct ofproto *ofproto_)
     }
     ofproto->has_bonded_bundles = false;
 
-    timer_set_duration(&ofproto->next_expiration, 1000);
-
     hmap_init(&ofproto->facets);
     hmap_init(&ofproto->subfacets);
     ofproto->governor = NULL;
@@ -786,8 +1258,6 @@ construct(struct ofproto *ofproto_)
         table->other_table = NULL;
         table->basis = random_uint32();
     }
-    ofproto->need_revalidate = 0;
-    tag_set_init(&ofproto->revalidate_set);
 
     list_init(&ofproto->completions);
 
@@ -799,6 +1269,27 @@ construct(struct ofproto *ofproto_)
     hmap_init(&ofproto->vlandev_map);
     hmap_init(&ofproto->realdev_vid_map);
 
+    sset_init(&ofproto->ports);
+    sset_init(&ofproto->ghost_ports);
+    sset_init(&ofproto->port_poll_set);
+    ofproto->port_poll_errno = 0;
+
+    SHASH_FOR_EACH_SAFE (node, next, &init_ofp_ports) {
+        struct iface_hint *iface_hint = node->data;
+
+        if (!strcmp(iface_hint->br_name, ofproto->up.name)) {
+            /* Check if the datapath already has this port. */
+            if (dpif_port_exists(ofproto->backer->dpif, node->name)) {
+                sset_add(&ofproto->ports, node->name);
+            }
+
+            free(iface_hint->br_name);
+            free(iface_hint->br_type);
+            free(iface_hint);
+            shash_delete(&init_ofp_ports, node);
+        }
+    }
+
     hmap_insert(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node,
                 hash_string(ofproto->up.name, 0));
     memset(&ofproto->stats, 0, sizeof ofproto->stats);
@@ -807,6 +1298,9 @@ construct(struct ofproto *ofproto_)
     error = add_internal_flows(ofproto);
     ofproto->up.tables[TBL_INTERNAL].flags = OFTABLE_HIDDEN | OFTABLE_READONLY;
 
+    ofproto->n_hit = 0;
+    ofproto->n_missed = 0;
+
     return error;
 }
 
@@ -817,8 +1311,9 @@ add_internal_flow(struct ofproto_dpif *ofproto, int id,
     struct ofputil_flow_mod fm;
     int error;
 
-    cls_rule_init_catchall(&fm.cr, 0);
-    cls_rule_set_reg(&fm.cr, 0, id);
+    match_init_catchall(&fm.match);
+    fm.priority = 0;
+    match_set_reg(&fm.match, 0, id);
     fm.new_cookie = htonll(0);
     fm.cookie = htonll(0);
     fm.cookie_mask = htonll(0);
@@ -839,8 +1334,8 @@ add_internal_flow(struct ofproto_dpif *ofproto, int id,
         return error;
     }
 
-    *rulep = rule_dpif_lookup__(ofproto, &fm.cr.flow, TBL_INTERNAL);
-    assert(*rulep != NULL);
+    *rulep = rule_dpif_lookup__(ofproto, &fm.match.flow, TBL_INTERNAL);
+    ovs_assert(*rulep != NULL);
 
     return 0;
 }
@@ -922,7 +1417,11 @@ destruct(struct ofproto *ofproto_)
     hmap_destroy(&ofproto->vlandev_map);
     hmap_destroy(&ofproto->realdev_vid_map);
 
-    dpif_close(ofproto->dpif);
+    sset_destroy(&ofproto->ports);
+    sset_destroy(&ofproto->ghost_ports);
+    sset_destroy(&ofproto->port_poll_set);
+
+    close_dpif_backer(ofproto->backer);
 }
 
 static int
@@ -930,29 +1429,11 @@ run_fast(struct ofproto *ofproto_)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
     struct ofport_dpif *ofport;
-    unsigned int work;
 
     HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
         port_run_fast(ofport);
     }
 
-    /* Handle one or more batches of upcalls, until there's nothing left to do
-     * or until we do a fixed total amount of work.
-     *
-     * We do work in batches because it can be much cheaper to set up a number
-     * of flows and fire off their patches all at once.  We do multiple batches
-     * because in some cases handling a packet can cause another packet to be
-     * queued almost immediately as part of the return flow.  Both
-     * optimizations can make major improvements on some benchmarks and
-     * presumably for real traffic as well. */
-    work = 0;
-    while (work < FLOW_MISS_MAX_BATCH) {
-        int retval = handle_upcalls(ofproto, FLOW_MISS_MAX_BATCH - work);
-        if (retval <= 0) {
-            return -retval;
-        }
-        work += retval;
-    }
     return 0;
 }
 
@@ -967,18 +1448,12 @@ run(struct ofproto *ofproto_)
     if (!clogged) {
         complete_operations(ofproto);
     }
-    dpif_run(ofproto->dpif);
 
     error = run_fast(ofproto_);
     if (error) {
         return error;
     }
 
-    if (timer_expired(&ofproto->next_expiration)) {
-        int delay = expire(ofproto);
-        timer_set_duration(&ofproto->next_expiration, delay);
-    }
-
     if (ofproto->netflow) {
         if (netflow_run(ofproto->netflow)) {
             send_netflow_active_timeouts(ofproto);
@@ -996,44 +1471,19 @@ run(struct ofproto *ofproto_)
     }
 
     stp_run(ofproto);
-    mac_learning_run(ofproto->ml, &ofproto->revalidate_set);
-
-    /* Now revalidate if there's anything to do. */
-    if (ofproto->need_revalidate
-        || !tag_set_is_empty(&ofproto->revalidate_set)) {
-        struct tag_set revalidate_set = ofproto->revalidate_set;
-        bool revalidate_all = ofproto->need_revalidate;
-        struct facet *facet;
-
-        switch (ofproto->need_revalidate) {
-        case REV_RECONFIGURE:   COVERAGE_INC(rev_reconfigure);   break;
-        case REV_STP:           COVERAGE_INC(rev_stp);           break;
-        case REV_PORT_TOGGLED:  COVERAGE_INC(rev_port_toggled);  break;
-        case REV_FLOW_TABLE:    COVERAGE_INC(rev_flow_table);    break;
-        case REV_INCONSISTENCY: COVERAGE_INC(rev_inconsistency); break;
-        }
-
-        /* Clear the revalidation flags. */
-        tag_set_init(&ofproto->revalidate_set);
-        ofproto->need_revalidate = 0;
-
-        HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
-            if (revalidate_all
-                || tag_set_intersects(&revalidate_set, facet->tags)) {
-                facet_revalidate(facet);
-            }
-        }
-    }
+    mac_learning_run(ofproto->ml, &ofproto->backer->revalidate_set);
 
     /* Check the consistency of a random facet, to aid debugging. */
-    if (!hmap_is_empty(&ofproto->facets) && !ofproto->need_revalidate) {
+    if (!hmap_is_empty(&ofproto->facets)
+        && !ofproto->backer->need_revalidate) {
         struct facet *facet;
 
         facet = CONTAINER_OF(hmap_random_node(&ofproto->facets),
                              struct facet, hmap_node);
-        if (!tag_set_intersects(&ofproto->revalidate_set, facet->tags)) {
+        if (!tag_set_intersects(&ofproto->backer->revalidate_set,
+                                facet->tags)) {
             if (!facet_check_consistency(facet)) {
-                ofproto->need_revalidate = REV_INCONSISTENCY;
+                ofproto->backer->need_revalidate = REV_INCONSISTENCY;
             }
         }
     }
@@ -1070,12 +1520,12 @@ wait(struct ofproto *ofproto_)
         poll_immediate_wake();
     }
 
-    dpif_wait(ofproto->dpif);
-    dpif_recv_wait(ofproto->dpif);
+    dpif_wait(ofproto->backer->dpif);
+    dpif_recv_wait(ofproto->backer->dpif);
     if (ofproto->sflow) {
         dpif_sflow_wait(ofproto->sflow);
     }
-    if (!tag_set_is_empty(&ofproto->revalidate_set)) {
+    if (!tag_set_is_empty(&ofproto->backer->revalidate_set)) {
         poll_immediate_wake();
     }
     HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
@@ -1089,12 +1539,10 @@ wait(struct ofproto *ofproto_)
     }
     mac_learning_wait(ofproto->ml);
     stp_wait(ofproto);
-    if (ofproto->need_revalidate) {
+    if (ofproto->backer->need_revalidate) {
         /* Shouldn't happen, but if it does just go around again. */
         VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
         poll_immediate_wake();
-    } else {
-        timer_wait(&ofproto->next_expiration);
     }
     if (ofproto->governor) {
         governor_wait(ofproto->governor);
@@ -1114,23 +1562,27 @@ static void
 flush(struct ofproto *ofproto_)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
-    struct facet *facet, *next_facet;
-
-    HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) {
-        /* Mark the facet as not installed so that facet_remove() doesn't
-         * bother trying to uninstall it.  There is no point in uninstalling it
-         * individually since we are about to blow away all the facets with
-         * dpif_flow_flush(). */
-        struct subfacet *subfacet;
+    struct subfacet *subfacet, *next_subfacet;
+    struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH];
+    int n_batch;
 
-        LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
-            subfacet->path = SF_NOT_INSTALLED;
-            subfacet->dp_packet_count = 0;
-            subfacet->dp_byte_count = 0;
+    n_batch = 0;
+    HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
+                        &ofproto->subfacets) {
+        if (subfacet->path != SF_NOT_INSTALLED) {
+            batch[n_batch++] = subfacet;
+            if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
+                subfacet_destroy_batch(ofproto, batch, n_batch);
+                n_batch = 0;
+            }
+        } else {
+            subfacet_destroy(subfacet);
         }
-        facet_remove(facet);
     }
-    dpif_flow_flush(ofproto->dpif);
+
+    if (n_batch > 0) {
+        subfacet_destroy_batch(ofproto, batch, n_batch);
+    }
 }
 
 static void
@@ -1153,17 +1605,17 @@ get_features(struct ofproto *ofproto_ OVS_UNUSED,
 }
 
 static void
-get_tables(struct ofproto *ofproto_, struct ofp10_table_stats *ots)
+get_tables(struct ofproto *ofproto_, struct ofp12_table_stats *ots)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
     struct dpif_dp_stats s;
 
     strcpy(ots->name, "classifier");
 
-    dpif_get_dp_stats(ofproto->dpif, &s);
-    put_32aligned_be64(&ots->lookup_count, htonll(s.n_hit + s.n_missed));
-    put_32aligned_be64(&ots->matched_count,
-                       htonll(s.n_hit + ofproto->n_matches));
+    dpif_get_dp_stats(ofproto->backer->dpif, &s);
+
+    ots->lookup_count = htonll(s.n_hit + s.n_missed);
+    ots->matched_count = htonll(s.n_hit + ofproto->n_matches);
 }
 
 static struct ofport *
@@ -1185,22 +1637,57 @@ port_construct(struct ofport *port_)
 {
     struct ofport_dpif *port = ofport_dpif_cast(port_);
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
+    const struct netdev *netdev = port->up.netdev;
+    struct dpif_port dpif_port;
+    int error;
 
-    ofproto->need_revalidate = REV_RECONFIGURE;
-    port->odp_port = ofp_port_to_odp_port(port->up.ofp_port);
+    ofproto->backer->need_revalidate = REV_RECONFIGURE;
     port->bundle = NULL;
     port->cfm = NULL;
     port->tag = tag_create_random();
     port->may_enable = true;
     port->stp_port = NULL;
     port->stp_state = STP_DISABLED;
+    port->tnl_port = NULL;
     hmap_init(&port->priorities);
     port->realdev_ofp_port = 0;
     port->vlandev_vid = 0;
-    port->carrier_seq = netdev_get_carrier_resets(port->up.netdev);
+    port->carrier_seq = netdev_get_carrier_resets(netdev);
+
+    if (netdev_vport_is_patch(netdev)) {
+        /* XXX By bailing out here, we don't do required sFlow work. */
+        port->odp_port = OVSP_NONE;
+        return 0;
+    }
+
+    error = dpif_port_query_by_name(ofproto->backer->dpif,
+                                    netdev_vport_get_dpif_port(netdev),
+                                    &dpif_port);
+    if (error) {
+        return error;
+    }
+
+    port->odp_port = dpif_port.port_no;
+
+    if (netdev_get_tunnel_config(netdev)) {
+        port->tnl_port = tnl_port_add(&port->up, port->odp_port);
+    } else {
+        /* Sanity-check that a mapping doesn't already exist.  This
+         * shouldn't happen for non-tunnel ports. */
+        if (odp_port_to_ofp_port(ofproto, port->odp_port) != OFPP_NONE) {
+            VLOG_ERR("port %s already has an OpenFlow port number",
+                     dpif_port.name);
+            dpif_port_destroy(&dpif_port);
+            return EBUSY;
+        }
+
+        hmap_insert(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node,
+                    hash_int(port->odp_port, 0));
+    }
+    dpif_port_destroy(&dpif_port);
 
     if (ofproto->sflow) {
-        dpif_sflow_add_port(ofproto->sflow, port_);
+        dpif_sflow_add_port(ofproto->sflow, port_, port->odp_port);
     }
 
     return 0;
@@ -1211,8 +1698,28 @@ port_destruct(struct ofport *port_)
 {
     struct ofport_dpif *port = ofport_dpif_cast(port_);
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
+    const char *dp_port_name = netdev_vport_get_dpif_port(port->up.netdev);
+    const char *devname = netdev_get_name(port->up.netdev);
+
+    if (dpif_port_exists(ofproto->backer->dpif, dp_port_name)) {
+        /* The underlying device is still there, so delete it.  This
+         * happens when the ofproto is being destroyed, since the caller
+         * assumes that removal of attached ports will happen as part of
+         * destruction. */
+        if (!port->tnl_port) {
+            dpif_port_del(ofproto->backer->dpif, port->odp_port);
+        }
+        ofproto->backer->need_revalidate = REV_RECONFIGURE;
+    }
 
-    ofproto->need_revalidate = REV_RECONFIGURE;
+    if (port->odp_port != OVSP_NONE && !port->tnl_port) {
+        hmap_remove(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node);
+    }
+
+    tnl_port_del(port->tnl_port);
+    sset_find_and_delete(&ofproto->ports, devname);
+    sset_find_and_delete(&ofproto->ghost_ports, devname);
+    ofproto->backer->need_revalidate = REV_RECONFIGURE;
     bundle_remove(port_);
     set_cfm(port_, NULL);
     if (ofproto->sflow) {
@@ -1243,7 +1750,7 @@ port_reconfigured(struct ofport *port_, enum ofputil_port_config old_config)
     if (changed & (OFPUTIL_PC_NO_RECV | OFPUTIL_PC_NO_RECV_STP |
                    OFPUTIL_PC_NO_FWD | OFPUTIL_PC_NO_FLOOD |
                    OFPUTIL_PC_NO_PACKET_IN)) {
-        ofproto->need_revalidate = REV_RECONFIGURE;
+        ofproto->backer->need_revalidate = REV_RECONFIGURE;
 
         if (changed & OFPUTIL_PC_NO_FLOOD && port->bundle) {
             bundle_update(port->bundle);
@@ -1262,17 +1769,17 @@ set_sflow(struct ofproto *ofproto_,
         if (!ds) {
             struct ofport_dpif *ofport;
 
-            ds = ofproto->sflow = dpif_sflow_create(ofproto->dpif);
+            ds = ofproto->sflow = dpif_sflow_create();
             HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
-                dpif_sflow_add_port(ds, &ofport->up);
+                dpif_sflow_add_port(ds, &ofport->up, ofport->odp_port);
             }
-            ofproto->need_revalidate = REV_RECONFIGURE;
+            ofproto->backer->need_revalidate = REV_RECONFIGURE;
         }
         dpif_sflow_set_options(ds, sflow_options);
     } else {
         if (ds) {
             dpif_sflow_destroy(ds);
-            ofproto->need_revalidate = REV_RECONFIGURE;
+            ofproto->backer->need_revalidate = REV_RECONFIGURE;
             ofproto->sflow = NULL;
         }
     }
@@ -1292,7 +1799,7 @@ set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
             struct ofproto_dpif *ofproto;
 
             ofproto = ofproto_dpif_cast(ofport->up.ofproto);
-            ofproto->need_revalidate = REV_RECONFIGURE;
+            ofproto->backer->need_revalidate = REV_RECONFIGURE;
             ofport->cfm = cfm_create(netdev_get_name(ofport->up.netdev));
         }
 
@@ -1307,43 +1814,22 @@ set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
     return error;
 }
 
-static int
-get_cfm_fault(const struct ofport *ofport_)
-{
-    struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
-
-    return ofport->cfm ? cfm_get_fault(ofport->cfm) : -1;
-}
-
-static int
-get_cfm_opup(const struct ofport *ofport_)
-{
-    struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
-
-    return ofport->cfm ? cfm_get_opup(ofport->cfm) : -1;
-}
-
-static int
-get_cfm_remote_mpids(const struct ofport *ofport_, const uint64_t **rmps,
-                     size_t *n_rmps)
+static bool
+get_cfm_status(const struct ofport *ofport_,
+               struct ofproto_cfm_status *status)
 {
     struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
 
     if (ofport->cfm) {
-        cfm_get_remote_mpids(ofport->cfm, rmps, n_rmps);
-        return 0;
+        status->faults = cfm_get_fault(ofport->cfm);
+        status->remote_opstate = cfm_get_opup(ofport->cfm);
+        status->health = cfm_get_health(ofport->cfm);
+        cfm_get_remote_mpids(ofport->cfm, &status->rmps, &status->n_rmps);
+        return true;
     } else {
-        return -1;
+        return false;
     }
 }
-
-static int
-get_cfm_health(const struct ofport *ofport_)
-{
-    struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
-
-    return ofport->cfm ? cfm_get_health(ofport->cfm) : -1;
-}
 \f
 /* Spanning Tree. */
 
@@ -1380,7 +1866,7 @@ set_stp(struct ofproto *ofproto_, const struct ofproto_stp_settings *s)
 
     /* Only revalidate flows if the configuration changed. */
     if (!s != !ofproto->stp) {
-        ofproto->need_revalidate = REV_RECONFIGURE;
+        ofproto->backer->need_revalidate = REV_RECONFIGURE;
     }
 
     if (s) {
@@ -1448,12 +1934,13 @@ update_stp_port_state(struct ofport_dpif *ofport)
         if (stp_learn_in_state(ofport->stp_state)
                 != stp_learn_in_state(state)) {
             /* xxx Learning action flows should also be flushed. */
-            mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
+            mac_learning_flush(ofproto->ml,
+                               &ofproto->backer->revalidate_set);
         }
         fwd_change = stp_forward_in_state(ofport->stp_state)
                         != stp_forward_in_state(state);
 
-        ofproto->need_revalidate = REV_STP;
+        ofproto->backer->need_revalidate = REV_STP;
         ofport->stp_state = state;
         ofport->stp_state_entered = time_msec();
 
@@ -1553,7 +2040,7 @@ stp_run(struct ofproto_dpif *ofproto)
         }
 
         if (stp_check_and_reset_fdb_flush(ofproto->stp)) {
-            mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
+            mac_learning_flush(ofproto->ml, &ofproto->backer->revalidate_set);
         }
     }
 }
@@ -1639,7 +2126,7 @@ set_queues(struct ofport *ofport_,
         uint8_t dscp;
 
         dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK;
-        if (dpif_queue_to_priority(ofproto->dpif, qdscp_list[i].queue,
+        if (dpif_queue_to_priority(ofproto->backer->dpif, qdscp_list[i].queue,
                                    &priority)) {
             continue;
         }
@@ -1651,12 +2138,12 @@ set_queues(struct ofport *ofport_,
             pdscp = xmalloc(sizeof *pdscp);
             pdscp->priority = priority;
             pdscp->dscp = dscp;
-            ofproto->need_revalidate = REV_RECONFIGURE;
+            ofproto->backer->need_revalidate = REV_RECONFIGURE;
         }
 
         if (pdscp->dscp != dscp) {
             pdscp->dscp = dscp;
-            ofproto->need_revalidate = REV_RECONFIGURE;
+            ofproto->backer->need_revalidate = REV_RECONFIGURE;
         }
 
         hmap_insert(&new, &pdscp->hmap_node, hash_int(pdscp->priority, 0));
@@ -1664,7 +2151,7 @@ set_queues(struct ofport *ofport_,
 
     if (!hmap_is_empty(&ofport->priorities)) {
         ofport_clear_priorities(ofport);
-        ofproto->need_revalidate = REV_RECONFIGURE;
+        ofproto->backer->need_revalidate = REV_RECONFIGURE;
     }
 
     hmap_swap(&new, &ofport->priorities);
@@ -1691,7 +2178,7 @@ bundle_flush_macs(struct ofbundle *bundle, bool all_ofprotos)
     struct mac_learning *ml = ofproto->ml;
     struct mac_entry *mac, *next_mac;
 
-    ofproto->need_revalidate = REV_RECONFIGURE;
+    ofproto->backer->need_revalidate = REV_RECONFIGURE;
     LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
         if (mac->port.p == bundle) {
             if (all_ofprotos) {
@@ -1704,7 +2191,6 @@ bundle_flush_macs(struct ofbundle *bundle, bool all_ofprotos)
                         e = mac_learning_lookup(o->ml, mac->mac, mac->vlan,
                                                 NULL);
                         if (e) {
-                            tag_set_add(&o->revalidate_set, e->tag);
                             mac_learning_expire(o->ml, e);
                         }
                     }
@@ -1768,7 +2254,7 @@ bundle_del_port(struct ofport_dpif *port)
 {
     struct ofbundle *bundle = port->bundle;
 
-    bundle->ofproto->need_revalidate = REV_RECONFIGURE;
+    bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
 
     list_remove(&port->bundle_node);
     port->bundle = NULL;
@@ -1785,8 +2271,7 @@ bundle_del_port(struct ofport_dpif *port)
 
 static bool
 bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port,
-                struct lacp_slave_settings *lacp,
-                uint32_t bond_stable_id)
+                struct lacp_slave_settings *lacp)
 {
     struct ofport_dpif *port;
 
@@ -1796,7 +2281,7 @@ bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port,
     }
 
     if (port->bundle != bundle) {
-        bundle->ofproto->need_revalidate = REV_RECONFIGURE;
+        bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
         if (port->bundle) {
             bundle_del_port(port);
         }
@@ -1809,12 +2294,10 @@ bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port,
         }
     }
     if (lacp) {
-        port->bundle->ofproto->need_revalidate = REV_RECONFIGURE;
+        bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
         lacp_slave_register(bundle->lacp, port, lacp);
     }
 
-    port->bond_stable_id = bond_stable_id;
-
     return true;
 }
 
@@ -1837,7 +2320,7 @@ bundle_destroy(struct ofbundle *bundle)
                 mirror_destroy(m);
             } else if (hmapx_find_and_delete(&m->srcs, bundle)
                        || hmapx_find_and_delete(&m->dsts, bundle)) {
-                ofproto->need_revalidate = REV_RECONFIGURE;
+                ofproto->backer->need_revalidate = REV_RECONFIGURE;
             }
         }
     }
@@ -1873,8 +2356,8 @@ bundle_set(struct ofproto *ofproto_, void *aux,
         return 0;
     }
 
-    assert(s->n_slaves == 1 || s->bond != NULL);
-    assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
+    ovs_assert(s->n_slaves == 1 || s->bond != NULL);
+    ovs_assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
 
     bundle = bundle_lookup(ofproto, aux);
     if (!bundle) {
@@ -1909,7 +2392,7 @@ bundle_set(struct ofproto *ofproto_, void *aux,
     /* LACP. */
     if (s->lacp) {
         if (!bundle->lacp) {
-            ofproto->need_revalidate = REV_RECONFIGURE;
+            ofproto->backer->need_revalidate = REV_RECONFIGURE;
             bundle->lacp = lacp_create();
         }
         lacp_configure(bundle->lacp, s->lacp);
@@ -1922,8 +2405,7 @@ bundle_set(struct ofproto *ofproto_, void *aux,
     ok = true;
     for (i = 0; i < s->n_slaves; i++) {
         if (!bundle_add_port(bundle, s->slaves[i],
-                             s->lacp ? &s->lacp_slaves[i] : NULL,
-                             s->bond_stable_ids ? s->bond_stable_ids[i] : 0)) {
+                             s->lacp ? &s->lacp_slaves[i] : NULL)) {
             ok = false;
         }
     }
@@ -1941,7 +2423,7 @@ bundle_set(struct ofproto *ofproto_, void *aux,
         found: ;
         }
     }
-    assert(list_size(&bundle->ports) <= s->n_slaves);
+    ovs_assert(list_size(&bundle->ports) <= s->n_slaves);
 
     if (list_is_empty(&bundle->ports)) {
         bundle_destroy(bundle);
@@ -2015,16 +2497,15 @@ bundle_set(struct ofproto *ofproto_, void *aux,
         bundle->ofproto->has_bonded_bundles = true;
         if (bundle->bond) {
             if (bond_reconfigure(bundle->bond, s->bond)) {
-                ofproto->need_revalidate = REV_RECONFIGURE;
+                ofproto->backer->need_revalidate = REV_RECONFIGURE;
             }
         } else {
             bundle->bond = bond_create(s->bond);
-            ofproto->need_revalidate = REV_RECONFIGURE;
+            ofproto->backer->need_revalidate = REV_RECONFIGURE;
         }
 
         LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
-            bond_slave_register(bundle->bond, port, port->bond_stable_id,
-                                port->up.netdev);
+            bond_slave_register(bundle->bond, port, port->up.netdev);
         }
     } else {
         bond_destroy(bundle->bond);
@@ -2139,7 +2620,7 @@ bundle_run(struct ofbundle *bundle)
             bond_slave_set_may_enable(bundle->bond, port, port->may_enable);
         }
 
-        bond_run(bundle->bond, &bundle->ofproto->revalidate_set,
+        bond_run(bundle->bond, &bundle->ofproto->backer->revalidate_set,
                  lacp_status(bundle->lacp));
         if (bond_should_send_learning_packets(bundle->bond)) {
             bundle_send_learning_packets(bundle);
@@ -2324,9 +2805,10 @@ mirror_set(struct ofproto *ofproto_, void *aux,
         }
     }
 
-    ofproto->need_revalidate = REV_RECONFIGURE;
+    ofproto->backer->need_revalidate = REV_RECONFIGURE;
     ofproto->has_mirrors = true;
-    mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
+    mac_learning_flush(ofproto->ml,
+                       &ofproto->backer->revalidate_set);
     mirror_update_dups(ofproto);
 
     return 0;
@@ -2345,8 +2827,8 @@ mirror_destroy(struct ofmirror *mirror)
     }
 
     ofproto = mirror->ofproto;
-    ofproto->need_revalidate = REV_RECONFIGURE;
-    mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
+    ofproto->backer->need_revalidate = REV_RECONFIGURE;
+    mac_learning_flush(ofproto->ml, &ofproto->backer->revalidate_set);
 
     mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
     HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
@@ -2397,7 +2879,7 @@ set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
     if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) {
-        mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
+        mac_learning_flush(ofproto->ml, &ofproto->backer->revalidate_set);
     }
     return 0;
 }
@@ -2414,14 +2896,16 @@ static void
 forward_bpdu_changed(struct ofproto *ofproto_)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
-    ofproto->need_revalidate = REV_RECONFIGURE;
+    ofproto->backer->need_revalidate = REV_RECONFIGURE;
 }
 
 static void
-set_mac_idle_time(struct ofproto *ofproto_, unsigned int idle_time)
+set_mac_table_config(struct ofproto *ofproto_, unsigned int idle_time,
+                     size_t max_entries)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
     mac_learning_set_idle_time(ofproto->ml, idle_time);
+    mac_learning_set_max_entries(ofproto->ml, max_entries);
 }
 \f
 /* Ports. */
@@ -2436,16 +2920,40 @@ get_ofp_port(const struct ofproto_dpif *ofproto, uint16_t ofp_port)
 static struct ofport_dpif *
 get_odp_port(const struct ofproto_dpif *ofproto, uint32_t odp_port)
 {
-    return get_ofp_port(ofproto, odp_port_to_ofp_port(odp_port));
+    struct ofport_dpif *port = odp_port_to_ofport(ofproto->backer, odp_port);
+    return port && &ofproto->up == port->up.ofproto ? port : NULL;
 }
 
 static void
-ofproto_port_from_dpif_port(struct ofproto_port *ofproto_port,
+ofproto_port_from_dpif_port(struct ofproto_dpif *ofproto,
+                            struct ofproto_port *ofproto_port,
                             struct dpif_port *dpif_port)
 {
     ofproto_port->name = dpif_port->name;
     ofproto_port->type = dpif_port->type;
-    ofproto_port->ofp_port = odp_port_to_ofp_port(dpif_port->port_no);
+    ofproto_port->ofp_port = odp_port_to_ofp_port(ofproto, dpif_port->port_no);
+}
+
+static struct ofport_dpif *
+ofport_get_peer(const struct ofport_dpif *ofport_dpif)
+{
+    const struct ofproto_dpif *ofproto;
+    const char *peer;
+
+    peer = netdev_vport_patch_peer(ofport_dpif->up.netdev);
+    if (!peer) {
+        return NULL;
+    }
+
+    HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
+        struct ofport *ofport;
+
+        ofport = shash_find_data(&ofproto->up.port_by_name, peer);
+        if (ofport && ofport->ofproto->ofproto_class == &ofproto_dpif_class) {
+            return ofport_dpif_cast(ofport);
+        }
+    }
+    return NULL;
 }
 
 static void
@@ -2471,6 +2979,13 @@ port_run(struct ofport_dpif *ofport)
     ofport->carrier_seq = carrier_seq;
 
     port_run_fast(ofport);
+
+    if (ofport->tnl_port
+        && tnl_port_reconfigure(&ofport->up, ofport->odp_port,
+                                &ofport->tnl_port)) {
+        ofproto_dpif_cast(ofport->up.ofproto)->backer->need_revalidate = true;
+    }
+
     if (ofport->cfm) {
         int cfm_opup = cfm_get_opup(ofport->cfm);
 
@@ -2493,7 +3008,7 @@ port_run(struct ofport_dpif *ofport)
         struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
 
         if (ofproto->has_bundle_action) {
-            ofproto->need_revalidate = REV_PORT_TOGGLED;
+            ofproto->backer->need_revalidate = REV_PORT_TOGGLED;
         }
     }
 
@@ -2516,37 +3031,85 @@ port_query_by_name(const struct ofproto *ofproto_, const char *devname,
     struct dpif_port dpif_port;
     int error;
 
-    error = dpif_port_query_by_name(ofproto->dpif, devname, &dpif_port);
+    if (sset_contains(&ofproto->ghost_ports, devname)) {
+        const char *type = netdev_get_type_from_name(devname);
+
+        /* We may be called before ofproto->up.port_by_name is populated with
+         * the appropriate ofport.  For this reason, we must get the name and
+         * type from the netdev layer directly. */
+        if (type) {
+            const struct ofport *ofport;
+
+            ofport = shash_find_data(&ofproto->up.port_by_name, devname);
+            ofproto_port->ofp_port = ofport ? ofport->ofp_port : OFPP_NONE;
+            ofproto_port->name = xstrdup(devname);
+            ofproto_port->type = xstrdup(type);
+            return 0;
+        }
+        return ENODEV;
+    }
+
+    if (!sset_contains(&ofproto->ports, devname)) {
+        return ENODEV;
+    }
+    error = dpif_port_query_by_name(ofproto->backer->dpif,
+                                    devname, &dpif_port);
     if (!error) {
-        ofproto_port_from_dpif_port(ofproto_port, &dpif_port);
+        ofproto_port_from_dpif_port(ofproto, ofproto_port, &dpif_port);
     }
     return error;
 }
 
 static int
-port_add(struct ofproto *ofproto_, struct netdev *netdev, uint16_t *ofp_portp)
+port_add(struct ofproto *ofproto_, struct netdev *netdev)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
-    uint16_t odp_port = UINT16_MAX;
-    int error;
+    const char *dp_port_name = netdev_vport_get_dpif_port(netdev);
+    const char *devname = netdev_get_name(netdev);
 
-    error = dpif_port_add(ofproto->dpif, netdev, &odp_port);
-    if (!error) {
-        *ofp_portp = odp_port_to_ofp_port(odp_port);
+    if (netdev_vport_is_patch(netdev)) {
+        sset_add(&ofproto->ghost_ports, netdev_get_name(netdev));
+        return 0;
     }
-    return error;
+
+    if (!dpif_port_exists(ofproto->backer->dpif, dp_port_name)) {
+        uint32_t port_no = UINT32_MAX;
+        int error;
+
+        error = dpif_port_add(ofproto->backer->dpif, netdev, &port_no);
+        if (error) {
+            return error;
+        }
+        if (netdev_get_tunnel_config(netdev)) {
+            simap_put(&ofproto->backer->tnl_backers, dp_port_name, port_no);
+        }
+    }
+
+    if (netdev_get_tunnel_config(netdev)) {
+        sset_add(&ofproto->ghost_ports, devname);
+    } else {
+        sset_add(&ofproto->ports, devname);
+    }
+    return 0;
 }
 
 static int
 port_del(struct ofproto *ofproto_, uint16_t ofp_port)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
-    int error;
+    struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
+    int error = 0;
 
-    error = dpif_port_del(ofproto->dpif, ofp_port_to_odp_port(ofp_port));
-    if (!error) {
-        struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
-        if (ofport) {
+    if (!ofport) {
+        return 0;
+    }
+
+    sset_find_and_delete(&ofproto->ghost_ports,
+                         netdev_get_name(ofport->up.netdev));
+    ofproto->backer->need_revalidate = REV_RECONFIGURE;
+    if (!ofport->tnl_port) {
+        error = dpif_port_del(ofproto->backer->dpif, ofport->odp_port);
+        if (!error) {
             /* The caller is going to close ofport->up.netdev.  If this is a
              * bonded port, then the bond is using that netdev, so remove it
              * from the bond.  The client will need to reconfigure everything
@@ -2565,7 +3128,7 @@ port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats)
 
     error = netdev_get_stats(ofport->up.netdev, stats);
 
-    if (!error && ofport->odp_port == OVSP_LOCAL) {
+    if (!error && ofport_->ofp_port == OFPP_LOCAL) {
         struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
 
         /* ofproto->stats.tx_packets represents packets that we created
@@ -2615,37 +3178,56 @@ ofproto_update_local_port_stats(const struct ofproto *ofproto_,
 }
 
 struct port_dump_state {
-    struct dpif_port_dump dump;
-    bool done;
+    uint32_t bucket;
+    uint32_t offset;
+    bool ghost;
+
+    struct ofproto_port port;
+    bool has_port;
 };
 
 static int
-port_dump_start(const struct ofproto *ofproto_, void **statep)
+port_dump_start(const struct ofproto *ofproto_ OVS_UNUSED, void **statep)
 {
-    struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
-    struct port_dump_state *state;
-
-    *statep = state = xmalloc(sizeof *state);
-    dpif_port_dump_start(&state->dump, ofproto->dpif);
-    state->done = false;
+    *statep = xzalloc(sizeof(struct port_dump_state));
     return 0;
 }
 
 static int
-port_dump_next(const struct ofproto *ofproto_ OVS_UNUSED, void *state_,
+port_dump_next(const struct ofproto *ofproto_, void *state_,
                struct ofproto_port *port)
 {
+    struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
     struct port_dump_state *state = state_;
-    struct dpif_port dpif_port;
+    const struct sset *sset;
+    struct sset_node *node;
 
-    if (dpif_port_dump_next(&state->dump, &dpif_port)) {
-        ofproto_port_from_dpif_port(port, &dpif_port);
-        return 0;
-    } else {
-        int error = dpif_port_dump_done(&state->dump);
-        state->done = true;
-        return error ? error : EOF;
+    if (state->has_port) {
+        ofproto_port_destroy(&state->port);
+        state->has_port = false;
+    }
+    sset = state->ghost ? &ofproto->ghost_ports : &ofproto->ports;
+    while ((node = sset_at_position(sset, &state->bucket, &state->offset))) {
+        int error;
+
+        error = port_query_by_name(ofproto_, node->name, &state->port);
+        if (!error) {
+            *port = state->port;
+            state->has_port = true;
+            return 0;
+        } else if (error != ENODEV) {
+            return error;
+        }
     }
+
+    if (!state->ghost) {
+        state->ghost = true;
+        state->bucket = 0;
+        state->offset = 0;
+        return port_dump_next(ofproto_, state_, port);
+    }
+
+    return EOF;
 }
 
 static int
@@ -2653,8 +3235,8 @@ port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_)
 {
     struct port_dump_state *state = state_;
 
-    if (!state->done) {
-        dpif_port_dump_done(&state->dump);
+    if (state->has_port) {
+        ofproto_port_destroy(&state->port);
     }
     free(state);
     return 0;
@@ -2664,14 +3246,26 @@ static int
 port_poll(const struct ofproto *ofproto_, char **devnamep)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
-    return dpif_port_poll(ofproto->dpif, devnamep);
+
+    if (ofproto->port_poll_errno) {
+        int error = ofproto->port_poll_errno;
+        ofproto->port_poll_errno = 0;
+        return error;
+    }
+
+    if (sset_is_empty(&ofproto->port_poll_set)) {
+        return EAGAIN;
+    }
+
+    *devnamep = sset_pop(&ofproto->port_poll_set);
+    return 0;
 }
 
 static void
 port_poll_wait(const struct ofproto *ofproto_)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
-    dpif_port_poll_wait(ofproto->dpif);
+    dpif_port_poll_wait(ofproto->backer->dpif);
 }
 
 static int
@@ -2696,18 +3290,19 @@ port_is_lacp_current(const struct ofport *ofport_)
  * It's possible to batch more than that, but the benefit might be minimal. */
 struct flow_miss {
     struct hmap_node hmap_node;
+    struct ofproto_dpif *ofproto;
     struct flow flow;
     enum odp_key_fitness key_fitness;
     const struct nlattr *key;
     size_t key_len;
-    ovs_be16 initial_tci;
+    struct initial_vals initial_vals;
     struct list packets;
     enum dpif_upcall_type upcall_type;
+    uint32_t odp_in_port;
 };
 
 struct flow_miss_op {
     struct dpif_op dpif_op;
-    struct subfacet *subfacet;  /* Subfacet  */
     void *garbage;              /* Pointer to pass to free(), NULL if none. */
     uint64_t stub[1024 / 8];    /* Temporary buffer. */
 };
@@ -2733,23 +3328,16 @@ send_packet_in_miss(struct ofproto_dpif *ofproto, const struct ofpbuf *packet,
 
     flow_get_metadata(flow, &pin.fmd);
 
-    /* Registers aren't meaningful on a miss. */
-    memset(pin.fmd.reg_masks, 0, sizeof pin.fmd.reg_masks);
-
     connmgr_send_packet_in(ofproto->up.connmgr, &pin);
 }
 
 static enum slow_path_reason
 process_special(struct ofproto_dpif *ofproto, const struct flow *flow,
-                const struct ofpbuf *packet)
+                const struct ofport_dpif *ofport, const struct ofpbuf *packet)
 {
-    struct ofport_dpif *ofport = get_ofp_port(ofproto, flow->in_port);
-
     if (!ofport) {
         return 0;
-    }
-
-    if (ofport->cfm && cfm_should_process_flow(ofport->cfm, flow)) {
+    } else if (ofport->cfm && cfm_should_process_flow(ofport->cfm, flow)) {
         if (packet) {
             cfm_process_heartbeat(ofport->cfm, packet);
         }
@@ -2765,17 +3353,19 @@ process_special(struct ofproto_dpif *ofproto, const struct flow *flow,
             stp_process_packet(ofport, packet);
         }
         return SLOW_STP;
+    } else {
+        return 0;
     }
-    return 0;
 }
 
 static struct flow_miss *
-flow_miss_find(struct hmap *todo, const struct flow *flow, uint32_t hash)
+flow_miss_find(struct hmap *todo, const struct ofproto_dpif *ofproto,
+               const struct flow *flow, uint32_t hash)
 {
     struct flow_miss *miss;
 
     HMAP_FOR_EACH_WITH_HASH (miss, hmap_node, hash, todo) {
-        if (flow_equal(&miss->flow, flow)) {
+        if (miss->ofproto == ofproto && flow_equal(&miss->flow, flow)) {
             return miss;
         }
     }
@@ -2792,7 +3382,7 @@ static void
 init_flow_miss_execute_op(struct flow_miss *miss, struct ofpbuf *packet,
                           struct flow_miss_op *op)
 {
-    if (miss->flow.vlan_tci != miss->initial_tci) {
+    if (miss->flow.vlan_tci != miss->initial_vals.vlan_tci) {
         /* This packet was received on a VLAN splinter port.  We
          * added a VLAN to the packet to make the packet resemble
          * the flow, but the actions were composed assuming that
@@ -2802,7 +3392,6 @@ init_flow_miss_execute_op(struct flow_miss *miss, struct ofpbuf *packet,
         eth_pop_vlan(packet);
     }
 
-    op->subfacet = NULL;
     op->garbage = NULL;
     op->dpif_op.type = DPIF_OP_EXECUTE;
     op->dpif_op.u.execute.key = miss->key;
@@ -2869,6 +3458,7 @@ handle_flow_miss_without_facet(struct flow_miss *miss,
                                struct flow_miss_op *ops, size_t *n_ops)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
+    long long int now = time_msec();
     struct action_xlate_ctx ctx;
     struct ofpbuf *packet;
 
@@ -2881,11 +3471,11 @@ handle_flow_miss_without_facet(struct flow_miss *miss,
 
         ofpbuf_use_stub(&odp_actions, op->stub, sizeof op->stub);
 
-        dpif_flow_stats_extract(&miss->flow, packet, &stats);
+        dpif_flow_stats_extract(&miss->flow, packet, now, &stats);
         rule_credit_stats(rule, &stats);
 
-        action_xlate_ctx_init(&ctx, ofproto, &miss->flow, miss->initial_tci,
-                              rule, 0, packet);
+        action_xlate_ctx_init(&ctx, ofproto, &miss->flow,
+                              &miss->initial_vals, rule, 0, packet);
         ctx.resubmit_stats = &stats;
         xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len,
                       &odp_actions);
@@ -2906,9 +3496,17 @@ handle_flow_miss_without_facet(struct flow_miss *miss,
 }
 
 /* Handles 'miss', which matches 'facet'.  May add any required datapath
- * operations to 'ops', incrementing '*n_ops' for each new op. */
+ * operations to 'ops', incrementing '*n_ops' for each new op.
+ *
+ * All of the packets in 'miss' are considered to have arrived at time 'now'.
+ * This is really important only for new facets: if we just called time_msec()
+ * here, then the new subfacet or its packets could look (occasionally) as
+ * though it was used some time after the facet was used.  That can make a
+ * one-packet flow look like it has a nonzero duration, which looks odd in
+ * e.g. NetFlow statistics. */
 static void
 handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet,
+                            long long int now,
                             struct flow_miss_op *ops, size_t *n_ops)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
@@ -2916,9 +3514,7 @@ handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet,
     struct subfacet *subfacet;
     struct ofpbuf *packet;
 
-    subfacet = subfacet_create(facet,
-                               miss->key_fitness, miss->key, miss->key_len,
-                               miss->initial_tci);
+    subfacet = subfacet_create(facet, miss, now);
 
     LIST_FOR_EACH (packet, list_node, &miss->packets) {
         struct flow_miss_op *op = &ops[*n_ops];
@@ -2932,14 +3528,13 @@ handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet,
             subfacet_make_actions(subfacet, packet, &odp_actions);
         }
 
-        dpif_flow_stats_extract(&facet->flow, packet, &stats);
+        dpif_flow_stats_extract(&facet->flow, packet, now, &stats);
         subfacet_update_stats(subfacet, &stats);
 
         if (subfacet->actions_len) {
             struct dpif_execute *execute = &op->dpif_op.u.execute;
 
             init_flow_miss_execute_op(miss, packet, op);
-            op->subfacet = subfacet;
             if (!subfacet->slow) {
                 execute->actions = subfacet->actions;
                 execute->actions_len = subfacet->actions_len;
@@ -2961,7 +3556,8 @@ handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet,
         struct flow_miss_op *op = &ops[(*n_ops)++];
         struct dpif_flow_put *put = &op->dpif_op.u.flow_put;
 
-        op->subfacet = subfacet;
+        subfacet->path = want_path;
+
         op->garbage = NULL;
         op->dpif_op.type = DPIF_OP_FLOW_PUT;
         put->flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
@@ -2979,13 +3575,15 @@ handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet,
     }
 }
 
-/* Handles flow miss 'miss' on 'ofproto'.  May add any required datapath
- * operations to 'ops', incrementing '*n_ops' for each new op. */
+/* Handles flow miss 'miss'.  May add any required datapath operations
+ * to 'ops', incrementing '*n_ops' for each new op. */
 static void
-handle_flow_miss(struct ofproto_dpif *ofproto, struct flow_miss *miss,
-                 struct flow_miss_op *ops, size_t *n_ops)
+handle_flow_miss(struct flow_miss *miss, struct flow_miss_op *ops,
+                 size_t *n_ops)
 {
+    struct ofproto_dpif *ofproto = miss->ofproto;
     struct facet *facet;
+    long long int now;
     uint32_t hash;
 
     /* The caller must ensure that miss->hmap_node.hash contains
@@ -3002,70 +3600,173 @@ handle_flow_miss(struct ofproto_dpif *ofproto, struct flow_miss *miss,
         }
 
         facet = facet_create(rule, &miss->flow, hash);
+        now = facet->used;
+    } else {
+        now = time_msec();
     }
-    handle_flow_miss_with_facet(miss, facet, ops, n_ops);
+    handle_flow_miss_with_facet(miss, facet, now, ops, n_ops);
 }
 
-/* Like odp_flow_key_to_flow(), this function converts the 'key_len' bytes of
- * OVS_KEY_ATTR_* attributes in 'key' to a flow structure in 'flow' and returns
- * an ODP_FIT_* value that indicates how well 'key' fits our expectations for
- * what a flow key should contain.
+static struct drop_key *
+drop_key_lookup(const struct dpif_backer *backer, const struct nlattr *key,
+                size_t key_len)
+{
+    struct drop_key *drop_key;
+
+    HMAP_FOR_EACH_WITH_HASH (drop_key, hmap_node, hash_bytes(key, key_len, 0),
+                             &backer->drop_keys) {
+        if (drop_key->key_len == key_len
+            && !memcmp(drop_key->key, key, key_len)) {
+            return drop_key;
+        }
+    }
+    return NULL;
+}
+
+static void
+drop_key_clear(struct dpif_backer *backer)
+{
+    static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
+    struct drop_key *drop_key, *next;
+
+    HMAP_FOR_EACH_SAFE (drop_key, next, hmap_node, &backer->drop_keys) {
+        int error;
+
+        error = dpif_flow_del(backer->dpif, drop_key->key, drop_key->key_len,
+                              NULL);
+        if (error && !VLOG_DROP_WARN(&rl)) {
+            struct ds ds = DS_EMPTY_INITIALIZER;
+            odp_flow_key_format(drop_key->key, drop_key->key_len, &ds);
+            VLOG_WARN("Failed to delete drop key (%s) (%s)", strerror(error),
+                      ds_cstr(&ds));
+            ds_destroy(&ds);
+        }
+
+        hmap_remove(&backer->drop_keys, &drop_key->hmap_node);
+        free(drop_key->key);
+        free(drop_key);
+    }
+}
+
+/* Given a datpath, packet, and flow metadata ('backer', 'packet', and 'key'
+ * respectively), populates 'flow' with the result of odp_flow_key_to_flow().
+ * Optionally, if nonnull, populates 'fitnessp' with the fitness of 'flow' as
+ * returned by odp_flow_key_to_flow().  Also, optionally populates 'ofproto'
+ * with the ofproto_dpif, and 'odp_in_port' with the datapath in_port, that
+ * 'packet' ingressed.
  *
- * This function also includes some logic to help make VLAN splinters
- * transparent to the rest of the upcall processing logic.  In particular, if
- * the extracted in_port is a VLAN splinter port, it replaces flow->in_port by
- * the "real" port, sets flow->vlan_tci correctly for the VLAN of the VLAN
- * splinter port, and pushes a VLAN header onto 'packet' (if it is nonnull).
+ * If 'ofproto' is nonnull, requires 'flow''s in_port to exist.  Otherwise sets
+ * 'flow''s in_port to OFPP_NONE.
  *
- * Sets '*initial_tci' to the VLAN TCI with which the packet was really
- * received, that is, the actual VLAN TCI extracted by odp_flow_key_to_flow().
- * (This differs from the value returned in flow->vlan_tci only for packets
- * received on VLAN splinters.)
- */
-static enum odp_key_fitness
-ofproto_dpif_extract_flow_key(const struct ofproto_dpif *ofproto,
-                              const struct nlattr *key, size_t key_len,
-                              struct flow *flow, ovs_be16 *initial_tci,
-                              struct ofpbuf *packet)
+ * This function does post-processing on data returned from
+ * odp_flow_key_to_flow() to help make VLAN splinters transparent to the rest
+ * of the upcall processing logic.  In particular, if the extracted in_port is
+ * a VLAN splinter port, it replaces flow->in_port by the "real" port, sets
+ * flow->vlan_tci correctly for the VLAN of the VLAN splinter port, and pushes
+ * a VLAN header onto 'packet' (if it is nonnull).
+ *
+ * Optionally, if 'initial_vals' is nonnull, sets 'initial_vals->vlan_tci'
+ * to the VLAN TCI with which the packet was really received, that is, the
+ * actual VLAN TCI extracted by odp_flow_key_to_flow().  (This differs from
+ * the value returned in flow->vlan_tci only for packets received on
+ * VLAN splinters.)  Also, if received on an IP tunnel, sets
+ * 'initial_vals->tunnel_ip_tos' to the tunnel's IP TOS.
+ *
+ * Similarly, this function also includes some logic to help with tunnels.  It
+ * may modify 'flow' as necessary to make the tunneling implementation
+ * transparent to the upcall processing logic.
+ *
+ * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport,
+ * or some other positive errno if there are other problems. */
+static int
+ofproto_receive(const struct dpif_backer *backer, struct ofpbuf *packet,
+                const struct nlattr *key, size_t key_len,
+                struct flow *flow, enum odp_key_fitness *fitnessp,
+                struct ofproto_dpif **ofproto, uint32_t *odp_in_port,
+                struct initial_vals *initial_vals)
 {
+    const struct ofport_dpif *port;
     enum odp_key_fitness fitness;
+    int error = ENODEV;
 
     fitness = odp_flow_key_to_flow(key, key_len, flow);
     if (fitness == ODP_FIT_ERROR) {
-        return fitness;
+        error = EINVAL;
+        goto exit;
     }
-    *initial_tci = flow->vlan_tci;
 
-    if (vsp_adjust_flow(ofproto, flow)) {
-        if (packet) {
-            /* Make the packet resemble the flow, so that it gets sent to an
-             * OpenFlow controller properly, so that it looks correct for
-             * sFlow, and so that flow_extract() will get the correct vlan_tci
-             * if it is called on 'packet'.
-             *
-             * The allocated space inside 'packet' probably also contains
-             * 'key', that is, both 'packet' and 'key' are probably part of a
-             * struct dpif_upcall (see the large comment on that structure
-             * definition), so pushing data on 'packet' is in general not a
-             * good idea since it could overwrite 'key' or free it as a side
-             * effect.  However, it's OK in this special case because we know
-             * that 'packet' is inside a Netlink attribute: pushing 4 bytes
-             * will just overwrite the 4-byte "struct nlattr", which is fine
-             * since we don't need that header anymore. */
-            eth_push_vlan(packet, flow->vlan_tci);
+    if (initial_vals) {
+        initial_vals->vlan_tci = flow->vlan_tci;
+        initial_vals->tunnel_ip_tos = flow->tunnel.ip_tos;
+    }
+
+    if (odp_in_port) {
+        *odp_in_port = flow->in_port;
+    }
+
+    if (tnl_port_should_receive(flow)) {
+        const struct ofport *ofport = tnl_port_receive(flow);
+        if (!ofport) {
+            flow->in_port = OFPP_NONE;
+            goto exit;
+        }
+        port = ofport_dpif_cast(ofport);
+
+        /* We can't reproduce 'key' from 'flow'. */
+        fitness = fitness == ODP_FIT_PERFECT ? ODP_FIT_TOO_MUCH : fitness;
+
+        /* XXX: Since the tunnel module is not scoped per backer, it's
+         * theoretically possible that we'll receive an ofport belonging to an
+         * entirely different datapath.  In practice, this can't happen because
+         * no platforms has two separate datapaths which each support
+         * tunneling. */
+        ovs_assert(ofproto_dpif_cast(port->up.ofproto)->backer == backer);
+    } else {
+        port = odp_port_to_ofport(backer, flow->in_port);
+        if (!port) {
+            flow->in_port = OFPP_NONE;
+            goto exit;
         }
 
-        /* Let the caller know that we can't reproduce 'key' from 'flow'. */
-        if (fitness == ODP_FIT_PERFECT) {
-            fitness = ODP_FIT_TOO_MUCH;
+        flow->in_port = port->up.ofp_port;
+        if (vsp_adjust_flow(ofproto_dpif_cast(port->up.ofproto), flow)) {
+            if (packet) {
+                /* Make the packet resemble the flow, so that it gets sent to
+                 * an OpenFlow controller properly, so that it looks correct
+                 * for sFlow, and so that flow_extract() will get the correct
+                 * vlan_tci if it is called on 'packet'.
+                 *
+                 * The allocated space inside 'packet' probably also contains
+                 * 'key', that is, both 'packet' and 'key' are probably part of
+                 * a struct dpif_upcall (see the large comment on that
+                 * structure definition), so pushing data on 'packet' is in
+                 * general not a good idea since it could overwrite 'key' or
+                 * free it as a side effect.  However, it's OK in this special
+                 * case because we know that 'packet' is inside a Netlink
+                 * attribute: pushing 4 bytes will just overwrite the 4-byte
+                 * "struct nlattr", which is fine since we don't need that
+                 * header anymore. */
+                eth_push_vlan(packet, flow->vlan_tci);
+            }
+            /* We can't reproduce 'key' from 'flow'. */
+            fitness = fitness == ODP_FIT_PERFECT ? ODP_FIT_TOO_MUCH : fitness;
         }
     }
+    error = 0;
+
+    if (ofproto) {
+        *ofproto = ofproto_dpif_cast(port->up.ofproto);
+    }
 
-    return fitness;
+exit:
+    if (fitnessp) {
+        *fitnessp = fitness;
+    }
+    return error;
 }
 
 static void
-handle_miss_upcalls(struct ofproto_dpif *ofproto, struct dpif_upcall *upcalls,
+handle_miss_upcalls(struct dpif_backer *backer, struct dpif_upcall *upcalls,
                     size_t n_upcalls)
 {
     struct dpif_upcall *upcall;
@@ -3092,27 +3793,58 @@ handle_miss_upcalls(struct ofproto_dpif *ofproto, struct dpif_upcall *upcalls,
     for (upcall = upcalls; upcall < &upcalls[n_upcalls]; upcall++) {
         struct flow_miss *miss = &misses[n_misses];
         struct flow_miss *existing_miss;
+        struct ofproto_dpif *ofproto;
+        uint32_t odp_in_port;
+        struct flow flow;
         uint32_t hash;
+        int error;
 
-        /* Obtain metadata and check userspace/kernel agreement on flow match,
-         * then set 'flow''s header pointers. */
-        miss->key_fitness = ofproto_dpif_extract_flow_key(
-            ofproto, upcall->key, upcall->key_len,
-            &miss->flow, &miss->initial_tci, upcall->packet);
-        if (miss->key_fitness == ODP_FIT_ERROR) {
+        error = ofproto_receive(backer, upcall->packet, upcall->key,
+                                upcall->key_len, &flow, &miss->key_fitness,
+                                &ofproto, &odp_in_port, &miss->initial_vals);
+        if (error == ENODEV) {
+            struct drop_key *drop_key;
+
+            /* Received packet on port for which we couldn't associate
+             * an ofproto.  This can happen if a port is removed while
+             * traffic is being received.  Print a rate-limited message
+             * in case it happens frequently.  Install a drop flow so
+             * that future packets of the flow are inexpensively dropped
+             * in the kernel. */
+            VLOG_INFO_RL(&rl, "received packet on unassociated port %"PRIu32,
+                         flow.in_port);
+
+            drop_key = drop_key_lookup(backer, upcall->key, upcall->key_len);
+            if (!drop_key) {
+                drop_key = xmalloc(sizeof *drop_key);
+                drop_key->key = xmemdup(upcall->key, upcall->key_len);
+                drop_key->key_len = upcall->key_len;
+
+                hmap_insert(&backer->drop_keys, &drop_key->hmap_node,
+                            hash_bytes(drop_key->key, drop_key->key_len, 0));
+                dpif_flow_put(backer->dpif, DPIF_FP_CREATE | DPIF_FP_MODIFY,
+                              drop_key->key, drop_key->key_len, NULL, 0, NULL);
+            }
+            continue;
+        }
+        if (error) {
             continue;
         }
-        flow_extract(upcall->packet, miss->flow.skb_priority,
-                     miss->flow.tun_id, miss->flow.in_port, &miss->flow);
+
+        ofproto->n_missed++;
+        flow_extract(upcall->packet, flow.skb_priority, flow.skb_mark,
+                     &flow.tunnel, flow.in_port, &miss->flow);
 
         /* Add other packets to a to-do list. */
         hash = flow_hash(&miss->flow, 0);
-        existing_miss = flow_miss_find(&todo, &miss->flow, hash);
+        existing_miss = flow_miss_find(&todo, ofproto, &miss->flow, hash);
         if (!existing_miss) {
             hmap_insert(&todo, &miss->hmap_node, hash);
+            miss->ofproto = ofproto;
             miss->key = upcall->key;
             miss->key_len = upcall->key_len;
             miss->upcall_type = upcall->type;
+            miss->odp_in_port = odp_in_port;
             list_init(&miss->packets);
 
             n_misses++;
@@ -3126,35 +3858,19 @@ handle_miss_upcalls(struct ofproto_dpif *ofproto, struct dpif_upcall *upcalls,
      * operations to batch. */
     n_ops = 0;
     HMAP_FOR_EACH (miss, hmap_node, &todo) {
-        handle_flow_miss(ofproto, miss, flow_miss_ops, &n_ops);
+        handle_flow_miss(miss, flow_miss_ops, &n_ops);
     }
-    assert(n_ops <= ARRAY_SIZE(flow_miss_ops));
+    ovs_assert(n_ops <= ARRAY_SIZE(flow_miss_ops));
 
     /* Execute batch. */
     for (i = 0; i < n_ops; i++) {
         dpif_ops[i] = &flow_miss_ops[i].dpif_op;
     }
-    dpif_operate(ofproto->dpif, dpif_ops, n_ops);
+    dpif_operate(backer->dpif, dpif_ops, n_ops);
 
-    /* Free memory and update facets. */
+    /* Free memory. */
     for (i = 0; i < n_ops; i++) {
-        struct flow_miss_op *op = &flow_miss_ops[i];
-
-        switch (op->dpif_op.type) {
-        case DPIF_OP_EXECUTE:
-            break;
-
-        case DPIF_OP_FLOW_PUT:
-            if (!op->dpif_op.error) {
-                op->subfacet->path = subfacet_want_path(op->subfacet->slow);
-            }
-            break;
-
-        case DPIF_OP_FLOW_DEL:
-            NOT_REACHED();
-        }
-
-        free(op->garbage);
+        free(flow_miss_ops[i].garbage);
     }
     hmap_destroy(&todo);
 }
@@ -3179,7 +3895,16 @@ classify_upcall(const struct dpif_upcall *upcall)
     }
 
     /* "action" upcalls need a closer look. */
-    memcpy(&cookie, &upcall->userdata, sizeof(cookie));
+    if (!upcall->userdata) {
+        VLOG_WARN_RL(&rl, "action upcall missing cookie");
+        return BAD_UPCALL;
+    }
+    if (nl_attr_get_size(upcall->userdata) != sizeof(cookie)) {
+        VLOG_WARN_RL(&rl, "action upcall cookie has unexpected size %zu",
+                     nl_attr_get_size(upcall->userdata));
+        return BAD_UPCALL;
+    }
+    memcpy(&cookie, nl_attr_get(upcall->userdata), sizeof(cookie));
     switch (cookie.type) {
     case USER_ACTION_COOKIE_SFLOW:
         return SFLOW_UPCALL;
@@ -3189,33 +3914,34 @@ classify_upcall(const struct dpif_upcall *upcall)
 
     case USER_ACTION_COOKIE_UNSPEC:
     default:
-        VLOG_WARN_RL(&rl, "invalid user cookie : 0x%"PRIx64, upcall->userdata);
+        VLOG_WARN_RL(&rl, "invalid user cookie : 0x%"PRIx64,
+                     nl_attr_get_u64(upcall->userdata));
         return BAD_UPCALL;
     }
 }
 
 static void
-handle_sflow_upcall(struct ofproto_dpif *ofproto,
+handle_sflow_upcall(struct dpif_backer *backer,
                     const struct dpif_upcall *upcall)
 {
+    struct ofproto_dpif *ofproto;
     union user_action_cookie cookie;
-    enum odp_key_fitness fitness;
-    ovs_be16 initial_tci;
     struct flow flow;
+    uint32_t odp_in_port;
 
-    fitness = ofproto_dpif_extract_flow_key(ofproto, upcall->key,
-                                            upcall->key_len, &flow,
-                                            &initial_tci, upcall->packet);
-    if (fitness == ODP_FIT_ERROR) {
+    if (ofproto_receive(backer, upcall->packet, upcall->key, upcall->key_len,
+                        &flow, NULL, &ofproto, &odp_in_port, NULL)
+        || !ofproto->sflow) {
         return;
     }
 
-    memcpy(&cookie, &upcall->userdata, sizeof(cookie));
-    dpif_sflow_received(ofproto->sflow, upcall->packet, &flow, &cookie);
+    memcpy(&cookie, nl_attr_get(upcall->userdata), sizeof(cookie));
+    dpif_sflow_received(ofproto->sflow, upcall->packet, &flow,
+                        odp_in_port, &cookie);
 }
 
 static int
-handle_upcalls(struct ofproto_dpif *ofproto, unsigned int max_batch)
+handle_upcalls(struct dpif_backer *backer, unsigned int max_batch)
 {
     struct dpif_upcall misses[FLOW_MISS_MAX_BATCH];
     struct ofpbuf miss_bufs[FLOW_MISS_MAX_BATCH];
@@ -3224,7 +3950,7 @@ handle_upcalls(struct ofproto_dpif *ofproto, unsigned int max_batch)
     int n_misses;
     int i;
 
-    assert(max_batch <= FLOW_MISS_MAX_BATCH);
+    ovs_assert(max_batch <= FLOW_MISS_MAX_BATCH);
 
     n_misses = 0;
     for (n_processed = 0; n_processed < max_batch; n_processed++) {
@@ -3234,7 +3960,7 @@ handle_upcalls(struct ofproto_dpif *ofproto, unsigned int max_batch)
 
         ofpbuf_use_stub(buf, miss_buf_stubs[n_misses],
                         sizeof miss_buf_stubs[n_misses]);
-        error = dpif_recv(ofproto->dpif, upcall, buf);
+        error = dpif_recv(backer->dpif, upcall, buf);
         if (error) {
             ofpbuf_uninit(buf);
             break;
@@ -3247,9 +3973,7 @@ handle_upcalls(struct ofproto_dpif *ofproto, unsigned int max_batch)
             break;
 
         case SFLOW_UPCALL:
-            if (ofproto->sflow) {
-                handle_sflow_upcall(ofproto, upcall);
-            }
+            handle_sflow_upcall(backer, upcall);
             ofpbuf_uninit(buf);
             break;
 
@@ -3260,7 +3984,7 @@ handle_upcalls(struct ofproto_dpif *ofproto, unsigned int max_batch)
     }
 
     /* Handle deferred MISS_UPCALL processing. */
-    handle_miss_upcalls(ofproto, misses, n_misses);
+    handle_miss_upcalls(backer, misses, n_misses);
     for (i = 0; i < n_misses; i++) {
         ofpbuf_uninit(&miss_bufs[i]);
     }
@@ -3271,7 +3995,7 @@ handle_upcalls(struct ofproto_dpif *ofproto, unsigned int max_batch)
 /* Flow expiration. */
 
 static int subfacet_max_idle(const struct ofproto_dpif *);
-static void update_stats(struct ofproto_dpif *);
+static void update_stats(struct dpif_backer *);
 static void rule_expire(struct rule_dpif *);
 static void expire_subfacets(struct ofproto_dpif *, int dp_max_idle);
 
@@ -3282,42 +4006,53 @@ static void expire_subfacets(struct ofproto_dpif *, int dp_max_idle);
  *
  * Returns the number of milliseconds after which it should be called again. */
 static int
-expire(struct ofproto_dpif *ofproto)
+expire(struct dpif_backer *backer)
 {
-    struct rule_dpif *rule, *next_rule;
-    struct oftable *table;
-    int dp_max_idle;
+    struct ofproto_dpif *ofproto;
+    int max_idle = INT32_MAX;
 
-    /* Update stats for each flow in the datapath. */
-    update_stats(ofproto);
+    /* Periodically clear out the drop keys in an effort to keep them
+     * relatively few. */
+    drop_key_clear(backer);
 
-    /* Expire subfacets that have been idle too long. */
-    dp_max_idle = subfacet_max_idle(ofproto);
-    expire_subfacets(ofproto, dp_max_idle);
+    /* Update stats for each flow in the backer. */
+    update_stats(backer);
 
-    /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
-    OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
-        struct cls_cursor cursor;
+    HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
+        struct rule *rule, *next_rule;
+        int dp_max_idle;
 
-        cls_cursor_init(&cursor, &table->cls, NULL);
-        CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
-            rule_expire(rule);
+        if (ofproto->backer != backer) {
+            continue;
         }
-    }
 
-    /* All outstanding data in existing flows has been accounted, so it's a
-     * good time to do bond rebalancing. */
-    if (ofproto->has_bonded_bundles) {
-        struct ofbundle *bundle;
+        /* Expire subfacets that have been idle too long. */
+        dp_max_idle = subfacet_max_idle(ofproto);
+        expire_subfacets(ofproto, dp_max_idle);
 
-        HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
-            if (bundle->bond) {
-                bond_rebalance(bundle->bond, &ofproto->revalidate_set);
+        max_idle = MIN(max_idle, dp_max_idle);
+
+        /* Expire OpenFlow flows whose idle_timeout or hard_timeout
+         * has passed. */
+        LIST_FOR_EACH_SAFE (rule, next_rule, expirable,
+                            &ofproto->up.expirable) {
+            rule_expire(rule_dpif_cast(rule));
+        }
+
+        /* All outstanding data in existing flows has been accounted, so it's a
+         * good time to do bond rebalancing. */
+        if (ofproto->has_bonded_bundles) {
+            struct ofbundle *bundle;
+
+            HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
+                if (bundle->bond) {
+                    bond_rebalance(bundle->bond, &backer->revalidate_set);
+                }
             }
         }
     }
 
-    return MIN(dp_max_idle, 1000);
+    return MIN(max_idle, 1000);
 }
 
 /* Updates flow table statistics given that the datapath just reported 'stats'
@@ -3358,7 +4093,7 @@ update_subfacet_stats(struct subfacet *subfacet,
 /* 'key' with length 'key_len' bytes is a flow in 'dpif' that we know nothing
  * about, or a flow that shouldn't be installed but was anyway.  Delete it. */
 static void
-delete_unexpected_flow(struct dpif *dpif,
+delete_unexpected_flow(struct ofproto_dpif *ofproto,
                        const struct nlattr *key, size_t key_len)
 {
     if (!VLOG_DROP_WARN(&rl)) {
@@ -3366,12 +4101,12 @@ delete_unexpected_flow(struct dpif *dpif,
 
         ds_init(&s);
         odp_flow_key_format(key, key_len, &s);
-        VLOG_WARN("unexpected flow from datapath %s", ds_cstr(&s));
+        VLOG_WARN("unexpected flow on %s: %s", ofproto->up.name, ds_cstr(&s));
         ds_destroy(&s);
     }
 
     COVERAGE_INC(facet_unexpected);
-    dpif_flow_del(dpif, key, key_len, NULL);
+    dpif_flow_del(ofproto->backer->dpif, key, key_len, NULL);
 }
 
 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
@@ -3384,22 +4119,48 @@ delete_unexpected_flow(struct dpif *dpif,
  * avoided by calling update_stats() whenever rules are created or
  * deleted.  However, the performance impact of making so many calls to the
  * datapath do not justify the benefit of having perfectly accurate statistics.
+ *
+ * In addition, this function maintains per ofproto flow hit counts. The patch
+ * port is not treated specially. e.g. A packet ingress from br0 patched into
+ * br1 will increase the hit count of br0 by 1, however, does not affect
+ * the hit or miss counts of br1.
  */
 static void
-update_stats(struct ofproto_dpif *p)
+update_stats(struct dpif_backer *backer)
 {
     const struct dpif_flow_stats *stats;
     struct dpif_flow_dump dump;
     const struct nlattr *key;
     size_t key_len;
 
-    dpif_flow_dump_start(&dump, p->dpif);
+    dpif_flow_dump_start(&dump, backer->dpif);
     while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) {
+        struct flow flow;
         struct subfacet *subfacet;
+        struct ofproto_dpif *ofproto;
+        struct ofport_dpif *ofport;
+        uint32_t key_hash;
+
+        if (ofproto_receive(backer, NULL, key, key_len, &flow, NULL, &ofproto,
+                            NULL, NULL)) {
+            continue;
+        }
 
-        subfacet = subfacet_find(p, key, key_len);
+        ofport = get_ofp_port(ofproto, flow.in_port);
+        if (ofport && ofport->tnl_port) {
+            netdev_vport_inc_rx(ofport->up.netdev, stats);
+        }
+
+        key_hash = odp_flow_key_hash(key, key_len);
+        subfacet = subfacet_find(ofproto, key, key_len, key_hash);
         switch (subfacet ? subfacet->path : SF_NOT_INSTALLED) {
         case SF_FAST_PATH:
+            /* Update ofproto_dpif's hit count. */
+            if (stats->n_packets > subfacet->dp_packet_count) {
+                uint64_t delta = stats->n_packets - subfacet->dp_packet_count;
+                dpif_stats_update_hit_count(ofproto, delta);
+            }
+
             update_subfacet_stats(subfacet, stats);
             break;
 
@@ -3409,7 +4170,7 @@ update_stats(struct ofproto_dpif *p)
 
         case SF_NOT_INSTALLED:
         default:
-            delete_unexpected_flow(p->dpif, key, key_len);
+            delete_unexpected_flow(ofproto, key, key_len);
             break;
         }
     }
@@ -3504,35 +4265,6 @@ subfacet_max_idle(const struct ofproto_dpif *ofproto)
     return bucket * BUCKET_WIDTH;
 }
 
-enum { EXPIRE_MAX_BATCH = 50 };
-
-static void
-expire_batch(struct ofproto_dpif *ofproto, struct subfacet **subfacets, int n)
-{
-    struct odputil_keybuf keybufs[EXPIRE_MAX_BATCH];
-    struct dpif_op ops[EXPIRE_MAX_BATCH];
-    struct dpif_op *opsp[EXPIRE_MAX_BATCH];
-    struct ofpbuf keys[EXPIRE_MAX_BATCH];
-    struct dpif_flow_stats stats[EXPIRE_MAX_BATCH];
-    int i;
-
-    for (i = 0; i < n; i++) {
-        ops[i].type = DPIF_OP_FLOW_DEL;
-        subfacet_get_key(subfacets[i], &keybufs[i], &keys[i]);
-        ops[i].u.flow_del.key = keys[i].data;
-        ops[i].u.flow_del.key_len = keys[i].size;
-        ops[i].u.flow_del.stats = &stats[i];
-        opsp[i] = &ops[i];
-    }
-
-    dpif_operate(ofproto->dpif, opsp, n);
-    for (i = 0; i < n; i++) {
-        subfacet_reset_dp_stats(subfacets[i], &stats[i]);
-        subfacets[i]->path = SF_NOT_INSTALLED;
-        subfacet_destroy(subfacets[i]);
-    }
-}
-
 static void
 expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
 {
@@ -3544,7 +4276,7 @@ expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
     long long int special_cutoff = time_msec() - 10000;
 
     struct subfacet *subfacet, *next_subfacet;
-    struct subfacet *batch[EXPIRE_MAX_BATCH];
+    struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH];
     int n_batch;
 
     n_batch = 0;
@@ -3558,8 +4290,8 @@ expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
         if (subfacet->used < cutoff) {
             if (subfacet->path != SF_NOT_INSTALLED) {
                 batch[n_batch++] = subfacet;
-                if (n_batch >= EXPIRE_MAX_BATCH) {
-                    expire_batch(ofproto, batch, n_batch);
+                if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
+                    subfacet_destroy_batch(ofproto, batch, n_batch);
                     n_batch = 0;
                 }
             } else {
@@ -3569,7 +4301,7 @@ expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
     }
 
     if (n_batch > 0) {
-        expire_batch(ofproto, batch, n_batch);
+        subfacet_destroy_batch(ofproto, batch, n_batch);
     }
 }
 
@@ -3649,9 +4381,7 @@ facet_free(struct facet *facet)
 }
 
 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
- * 'packet', which arrived on 'in_port'.
- *
- * Takes ownership of 'packet'. */
+ * 'packet', which arrived on 'in_port'. */
 static bool
 execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow,
                     const struct nlattr *odp_actions, size_t actions_len,
@@ -3662,12 +4392,11 @@ execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow,
     int error;
 
     ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
-    odp_flow_key_from_flow(&key, flow);
+    odp_flow_key_from_flow(&key, flow,
+                           ofp_port_to_odp_port(ofproto, flow->in_port));
 
-    error = dpif_execute(ofproto->dpif, key.data, key.size,
+    error = dpif_execute(ofproto->backer->dpif, key.data, key.size,
                          odp_actions, actions_len, packet);
-
-    ofpbuf_delete(packet);
     return !error;
 }
 
@@ -3684,7 +4413,7 @@ facet_remove(struct facet *facet)
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
     struct subfacet *subfacet, *next_subfacet;
 
-    assert(!list_is_empty(&facet->subfacets));
+    ovs_assert(!list_is_empty(&facet->subfacets));
 
     /* First uninstall all of the subfacets to get final statistics. */
     LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
@@ -3714,6 +4443,8 @@ static void
 facet_learn(struct facet *facet)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
+    struct subfacet *subfacet= CONTAINER_OF(list_front(&facet->subfacets),
+                                            struct subfacet, list_node);
     struct action_xlate_ctx ctx;
 
     if (!facet->has_learn
@@ -3724,7 +4455,7 @@ facet_learn(struct facet *facet)
     }
 
     action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
-                          facet->flow.vlan_tci,
+                          &subfacet->initial_vals,
                           facet->rule, facet->tcp_flags, NULL);
     ctx.may_learn = true;
     xlate_actions_for_side_effects(&ctx, facet->rule->up.ofpacts,
@@ -3735,7 +4466,7 @@ static void
 facet_account(struct facet *facet)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
-    struct subfacet *subfacet;
+    struct subfacet *subfacet = facet_get_subfacet(facet);
     const struct nlattr *a;
     unsigned int left;
     ovs_be16 vlan_tci;
@@ -3754,8 +4485,6 @@ facet_account(struct facet *facet)
      *
      * We use the actions from an arbitrary subfacet because they should all
      * be equally valid for our purpose. */
-    subfacet = CONTAINER_OF(list_front(&facet->subfacets),
-                            struct subfacet, list_node);
     vlan_tci = facet->flow.vlan_tci;
     NL_ATTR_FOR_EACH_UNSAFE (a, left,
                              subfacet->actions, subfacet->actions_len) {
@@ -3794,7 +4523,8 @@ facet_is_controller_flow(struct facet *facet)
         const struct ofpact *ofpacts = rule->ofpacts;
         size_t ofpacts_len = rule->ofpacts_len;
 
-        if (ofpacts->type == OFPACT_CONTROLLER &&
+        if (ofpacts_len > 0 &&
+            ofpacts->type == OFPACT_CONTROLLER &&
             ofpact_next(ofpacts) >= ofpact_end(ofpacts, ofpacts_len)) {
             return true;
         }
@@ -3813,8 +4543,8 @@ facet_flush_stats(struct facet *facet)
     struct subfacet *subfacet;
 
     LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
-        assert(!subfacet->dp_byte_count);
-        assert(!subfacet->dp_packet_count);
+        ovs_assert(!subfacet->dp_byte_count);
+        ovs_assert(!subfacet->dp_packet_count);
     }
 
     facet_push_stats(facet);
@@ -3879,14 +4609,26 @@ facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow,
 
     facet = facet_find(ofproto, flow, hash);
     if (facet
-        && (ofproto->need_revalidate
-            || tag_set_intersects(&ofproto->revalidate_set, facet->tags))) {
+        && (ofproto->backer->need_revalidate
+            || tag_set_intersects(&ofproto->backer->revalidate_set,
+                                  facet->tags))) {
         facet_revalidate(facet);
+
+        /* facet_revalidate() may have destroyed 'facet'. */
+        facet = facet_find(ofproto, flow, hash);
     }
 
     return facet;
 }
 
+/* Return a subfacet from 'facet'.  A facet consists of one or more
+ * subfacets, and this function returns one of them. */
+static struct subfacet *facet_get_subfacet(struct facet *facet)
+{
+    return CONTAINER_OF(list_front(&facet->subfacets), struct subfacet,
+                        list_node);
+}
+
 static const char *
 subfacet_path_to_string(enum subfacet_path path)
 {
@@ -3967,13 +4709,11 @@ facet_check_consistency(struct facet *facet)
     ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
     LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
         enum subfacet_path want_path;
-        struct odputil_keybuf keybuf;
         struct action_xlate_ctx ctx;
-        struct ofpbuf key;
         struct ds s;
 
         action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
-                              subfacet->initial_tci, rule, 0, NULL);
+                              &subfacet->initial_vals, rule, 0, NULL);
         xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len,
                       &odp_actions);
 
@@ -4005,8 +4745,7 @@ facet_check_consistency(struct facet *facet)
         }
 
         ds_init(&s);
-        subfacet_get_key(subfacet, &keybuf, &key);
-        odp_flow_key_format(key.data, key.size, &s);
+        odp_flow_key_format(subfacet->key, subfacet->key_len, &s);
 
         ds_put_cstr(&s, ": inconsistency in subfacet");
         if (want_path != subfacet->path) {
@@ -4044,7 +4783,10 @@ facet_check_consistency(struct facet *facet)
  *     'facet' to the new rule and recompiles its actions.
  *
  *   - If the rule found is the same as 'facet''s current rule, leaves 'facet'
- *     where it is and recompiles its actions anyway. */
+ *     where it is and recompiles its actions anyway.
+ *
+ *   - If any of 'facet''s subfacets correspond to a new flow according to
+ *     ofproto_receive(), 'facet' is removed. */
 static void
 facet_revalidate(struct facet *facet)
 {
@@ -4065,6 +4807,25 @@ facet_revalidate(struct facet *facet)
 
     COVERAGE_INC(facet_revalidate);
 
+    /* Check that child subfacets still correspond to this facet.  Tunnel
+     * configuration changes could cause a subfacet's OpenFlow in_port to
+     * change. */
+    LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
+        struct ofproto_dpif *recv_ofproto;
+        struct flow recv_flow;
+        int error;
+
+        error = ofproto_receive(ofproto->backer, NULL, subfacet->key,
+                                subfacet->key_len, &recv_flow, NULL,
+                                &recv_ofproto, NULL, NULL);
+        if (error
+            || recv_ofproto != ofproto
+            || memcmp(&recv_flow, &facet->flow, sizeof recv_flow)) {
+            facet_remove(facet);
+            return;
+        }
+    }
+
     new_rule = rule_dpif_lookup(ofproto, &facet->flow);
 
     /* Calculate new datapath actions.
@@ -4083,7 +4844,7 @@ facet_revalidate(struct facet *facet)
         enum slow_path_reason slow;
 
         action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
-                              subfacet->initial_tci, new_rule, 0, NULL);
+                              &subfacet->initial_vals, new_rule, 0, NULL);
         xlate_actions(&ctx, new_rule->up.ofpacts, new_rule->up.ofpacts_len,
                       &odp_actions);
 
@@ -4171,9 +4932,9 @@ facet_push_stats(struct facet *facet)
 {
     struct dpif_flow_stats stats;
 
-    assert(facet->packet_count >= facet->prev_packet_count);
-    assert(facet->byte_count >= facet->prev_byte_count);
-    assert(facet->used >= facet->prev_used);
+    ovs_assert(facet->packet_count >= facet->prev_packet_count);
+    ovs_assert(facet->byte_count >= facet->prev_byte_count);
+    ovs_assert(facet->used >= facet->prev_used);
 
     stats.n_packets = facet->packet_count - facet->prev_packet_count;
     stats.n_bytes = facet->byte_count - facet->prev_byte_count;
@@ -4185,7 +4946,7 @@ facet_push_stats(struct facet *facet)
         facet->prev_byte_count = facet->byte_count;
         facet->prev_used = facet->used;
 
-        flow_push_stats(facet->rule, &facet->flow, &stats);
+        flow_push_stats(facet, &stats);
 
         update_mirror_stats(ofproto_dpif_cast(facet->rule->up.ofproto),
                             facet->mirrors, stats.n_packets, stats.n_bytes);
@@ -4200,19 +4961,20 @@ rule_credit_stats(struct rule_dpif *rule, const struct dpif_flow_stats *stats)
     ofproto_rule_update_used(&rule->up, stats->used);
 }
 
-/* Pushes flow statistics to the rules which 'flow' resubmits into given
- * 'rule''s actions and mirrors. */
+/* Pushes flow statistics to the rules which 'facet->flow' resubmits
+ * into given 'facet->rule''s actions and mirrors. */
 static void
-flow_push_stats(struct rule_dpif *rule,
-                const struct flow *flow, const struct dpif_flow_stats *stats)
+flow_push_stats(struct facet *facet, const struct dpif_flow_stats *stats)
 {
+    struct rule_dpif *rule = facet->rule;
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
+    struct subfacet *subfacet = facet_get_subfacet(facet);
     struct action_xlate_ctx ctx;
 
     ofproto_rule_update_used(&rule->up, stats->used);
 
-    action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci, rule,
-                          0, NULL);
+    action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
+                          &subfacet->initial_vals, rule, 0, NULL);
     ctx.resubmit_stats = stats;
     xlate_actions_for_side_effects(&ctx, rule->up.ofpacts,
                                    rule->up.ofpacts_len);
@@ -4221,18 +4983,15 @@ flow_push_stats(struct rule_dpif *rule,
 /* Subfacets. */
 
 static struct subfacet *
-subfacet_find__(struct ofproto_dpif *ofproto,
-                const struct nlattr *key, size_t key_len, uint32_t key_hash,
-                const struct flow *flow)
+subfacet_find(struct ofproto_dpif *ofproto,
+              const struct nlattr *key, size_t key_len, uint32_t key_hash)
 {
     struct subfacet *subfacet;
 
     HMAP_FOR_EACH_WITH_HASH (subfacet, hmap_node, key_hash,
                              &ofproto->subfacets) {
-        if (subfacet->key
-            ? (subfacet->key_len == key_len
-               && !memcmp(key, subfacet->key, key_len))
-            : flow_equal(flow, &subfacet->facet->flow)) {
+        if (subfacet->key_len == key_len
+            && !memcmp(key, subfacet->key, key_len)) {
             return subfacet;
         }
     }
@@ -4241,33 +5000,30 @@ subfacet_find__(struct ofproto_dpif *ofproto,
 }
 
 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
- * 'key_fitness', 'key', and 'key_len'.  Returns the existing subfacet if
- * there is one, otherwise creates and returns a new subfacet.
+ * 'key_fitness', 'key', and 'key_len' members in 'miss'.  Returns the
+ * existing subfacet if there is one, otherwise creates and returns a
+ * new subfacet.
  *
  * If the returned subfacet is new, then subfacet->actions will be NULL, in
  * which case the caller must populate the actions with
  * subfacet_make_actions(). */
 static struct subfacet *
-subfacet_create(struct facet *facet, enum odp_key_fitness key_fitness,
-                const struct nlattr *key, size_t key_len, ovs_be16 initial_tci)
+subfacet_create(struct facet *facet, struct flow_miss *miss,
+                long long int now)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
-    uint32_t key_hash = odp_flow_key_hash(key, key_len);
+    enum odp_key_fitness key_fitness = miss->key_fitness;
+    const struct nlattr *key = miss->key;
+    size_t key_len = miss->key_len;
+    uint32_t key_hash;
     struct subfacet *subfacet;
 
+    key_hash = odp_flow_key_hash(key, key_len);
+
     if (list_is_empty(&facet->subfacets)) {
         subfacet = &facet->one_subfacet;
-
-        /* This subfacet should conceptually be created, and have its first
-         * packet pass through, at the same time that its facet was created.
-         * If we called time_msec() here, then the subfacet could look
-         * (occasionally) as though it was used some time after the facet was
-         * used.  That can make a one-packet flow look like it has a nonzero
-         * duration, which looks odd in e.g. NetFlow statistics. */
-        subfacet->used = facet->used;
     } else {
-        subfacet = subfacet_find__(ofproto, key, key_len, key_hash,
-                                   &facet->flow);
+        subfacet = subfacet_find(ofproto, key, key_len, key_hash);
         if (subfacet) {
             if (subfacet->facet == facet) {
                 return subfacet;
@@ -4279,20 +5035,15 @@ subfacet_create(struct facet *facet, enum odp_key_fitness key_fitness,
         }
 
         subfacet = xmalloc(sizeof *subfacet);
-        subfacet->used = time_msec();
     }
 
     hmap_insert(&ofproto->subfacets, &subfacet->hmap_node, key_hash);
     list_push_back(&facet->subfacets, &subfacet->list_node);
     subfacet->facet = facet;
     subfacet->key_fitness = key_fitness;
-    if (key_fitness != ODP_FIT_PERFECT) {
-        subfacet->key = xmemdup(key, key_len);
-        subfacet->key_len = key_len;
-    } else {
-        subfacet->key = NULL;
-        subfacet->key_len = 0;
-    }
+    subfacet->key = xmemdup(key, key_len);
+    subfacet->key_len = key_len;
+    subfacet->used = now;
     subfacet->dp_packet_count = 0;
     subfacet->dp_byte_count = 0;
     subfacet->actions_len = 0;
@@ -4301,29 +5052,12 @@ subfacet_create(struct facet *facet, enum odp_key_fitness key_fitness,
                       ? SLOW_MATCH
                       : 0);
     subfacet->path = SF_NOT_INSTALLED;
-    subfacet->initial_tci = initial_tci;
+    subfacet->initial_vals = miss->initial_vals;
+    subfacet->odp_in_port = miss->odp_in_port;
 
     return subfacet;
 }
 
-/* Searches 'ofproto' for a subfacet with the given 'key', 'key_len', and
- * 'flow'.  Returns the subfacet if one exists, otherwise NULL. */
-static struct subfacet *
-subfacet_find(struct ofproto_dpif *ofproto,
-              const struct nlattr *key, size_t key_len)
-{
-    uint32_t key_hash = odp_flow_key_hash(key, key_len);
-    enum odp_key_fitness fitness;
-    struct flow flow;
-
-    fitness = odp_flow_key_to_flow(key, key_len, &flow);
-    if (fitness == ODP_FIT_ERROR) {
-        return NULL;
-    }
-
-    return subfacet_find__(ofproto, key, key_len, key_hash, &flow);
-}
-
 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
  * its facet within 'ofproto', and frees it. */
 static void
@@ -4357,18 +5091,28 @@ subfacet_destroy(struct subfacet *subfacet)
     }
 }
 
-/* Initializes 'key' with the sequence of OVS_KEY_ATTR_* Netlink attributes
- * that can be used to refer to 'subfacet'.  The caller must provide 'keybuf'
- * for use as temporary storage. */
 static void
-subfacet_get_key(struct subfacet *subfacet, struct odputil_keybuf *keybuf,
-                 struct ofpbuf *key)
+subfacet_destroy_batch(struct ofproto_dpif *ofproto,
+                       struct subfacet **subfacets, int n)
 {
-    if (!subfacet->key) {
-        ofpbuf_use_stack(key, keybuf, sizeof *keybuf);
-        odp_flow_key_from_flow(key, &subfacet->facet->flow);
-    } else {
-        ofpbuf_use_const(key, subfacet->key, subfacet->key_len);
+    struct dpif_op ops[SUBFACET_DESTROY_MAX_BATCH];
+    struct dpif_op *opsp[SUBFACET_DESTROY_MAX_BATCH];
+    struct dpif_flow_stats stats[SUBFACET_DESTROY_MAX_BATCH];
+    int i;
+
+    for (i = 0; i < n; i++) {
+        ops[i].type = DPIF_OP_FLOW_DEL;
+        ops[i].u.flow_del.key = subfacets[i]->key;
+        ops[i].u.flow_del.key_len = subfacets[i]->key_len;
+        ops[i].u.flow_del.stats = &stats[i];
+        opsp[i] = &ops[i];
+    }
+
+    dpif_operate(ofproto->backer->dpif, opsp, n);
+    for (i = 0; i < n; i++) {
+        subfacet_reset_dp_stats(subfacets[i], &stats[i]);
+        subfacets[i]->path = SF_NOT_INSTALLED;
+        subfacet_destroy(subfacets[i]);
     }
 }
 
@@ -4385,8 +5129,8 @@ subfacet_make_actions(struct subfacet *subfacet, const struct ofpbuf *packet,
 
     struct action_xlate_ctx ctx;
 
-    action_xlate_ctx_init(&ctx, ofproto, &facet->flow, subfacet->initial_tci,
-                          rule, 0, packet);
+    action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
+                          &subfacet->initial_vals, rule, 0, packet);
     xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len, odp_actions);
     facet->tags = ctx.tags;
     facet->has_learn = ctx.has_learn;
@@ -4420,9 +5164,7 @@ subfacet_install(struct subfacet *subfacet,
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
     enum subfacet_path path = subfacet_want_path(slow);
     uint64_t slow_path_stub[128 / 8];
-    struct odputil_keybuf keybuf;
     enum dpif_flow_put_flags flags;
-    struct ofpbuf key;
     int ret;
 
     flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
@@ -4436,9 +5178,8 @@ subfacet_install(struct subfacet *subfacet,
                           &actions, &actions_len);
     }
 
-    subfacet_get_key(subfacet, &keybuf, &key);
-    ret = dpif_flow_put(ofproto->dpif, flags, key.data, key.size,
-                        actions, actions_len, stats);
+    ret = dpif_flow_put(ofproto->backer->dpif, flags, subfacet->key,
+                        subfacet->key_len, actions, actions_len, stats);
 
     if (stats) {
         subfacet_reset_dp_stats(subfacet, stats);
@@ -4464,21 +5205,19 @@ subfacet_uninstall(struct subfacet *subfacet)
     if (subfacet->path != SF_NOT_INSTALLED) {
         struct rule_dpif *rule = subfacet->facet->rule;
         struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
-        struct odputil_keybuf keybuf;
         struct dpif_flow_stats stats;
-        struct ofpbuf key;
         int error;
 
-        subfacet_get_key(subfacet, &keybuf, &key);
-        error = dpif_flow_del(ofproto->dpif, key.data, key.size, &stats);
+        error = dpif_flow_del(ofproto->backer->dpif, subfacet->key,
+                              subfacet->key_len, &stats);
         subfacet_reset_dp_stats(subfacet, &stats);
         if (!error) {
             subfacet_update_stats(subfacet, &stats);
         }
         subfacet->path = SF_NOT_INSTALLED;
     } else {
-        assert(subfacet->dp_packet_count == 0);
-        assert(subfacet->dp_byte_count == 0);
+        ovs_assert(subfacet->dp_packet_count == 0);
+        ovs_assert(subfacet->dp_byte_count == 0);
     }
 }
 
@@ -4530,7 +5269,6 @@ subfacet_update_stats(struct subfacet *subfacet,
         facet->packet_count += stats->n_packets;
         facet->byte_count += stats->n_bytes;
         facet->tcp_flags |= stats->tcp_flags;
-        facet_push_stats(facet);
         netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags);
     }
 }
@@ -4540,7 +5278,6 @@ subfacet_update_stats(struct subfacet *subfacet,
 static struct rule_dpif *
 rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow)
 {
-    struct ofport_dpif *port;
     struct rule_dpif *rule;
 
     rule = rule_dpif_lookup__(ofproto, flow, 0);
@@ -4548,16 +5285,7 @@ rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow)
         return rule;
     }
 
-    port = get_ofp_port(ofproto, flow->in_port);
-    if (!port) {
-        VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, flow->in_port);
-        return ofproto->miss_rule;
-    }
-
-    if (port->up.pp.config & OFPUTIL_PC_NO_PACKET_IN) {
-        return ofproto->no_packet_in_rule;
-    }
-    return ofproto->miss_rule;
+    return rule_dpif_miss_rule(ofproto, flow);
 }
 
 static struct rule_dpif *
@@ -4586,6 +5314,23 @@ rule_dpif_lookup__(struct ofproto_dpif *ofproto, const struct flow *flow,
     return rule_dpif_cast(rule_from_cls_rule(cls_rule));
 }
 
+static struct rule_dpif *
+rule_dpif_miss_rule(struct ofproto_dpif *ofproto, const struct flow *flow)
+{
+    struct ofport_dpif *port;
+
+    port = get_ofp_port(ofproto, flow->in_port);
+    if (!port) {
+        VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, flow->in_port);
+        return ofproto->miss_rule;
+    }
+
+    if (port->up.pp.config & OFPUTIL_PC_NO_PACKET_IN) {
+        return ofproto->no_packet_in_rule;
+    }
+    return ofproto->miss_rule;
+}
+
 static void
 complete_operation(struct rule_dpif *rule)
 {
@@ -4622,13 +5367,6 @@ rule_construct(struct rule *rule_)
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
     struct rule_dpif *victim;
     uint8_t table_id;
-    enum ofperr error;
-
-    error = ofpacts_check(rule->up.ofpacts, rule->up.ofpacts_len,
-                          &rule->up.cr.flow, ofproto->max_ports);
-    if (error) {
-        return error;
-    }
 
     rule->packet_count = 0;
     rule->byte_count = 0;
@@ -4655,10 +5393,17 @@ rule_construct(struct rule *rule_)
     }
 
     table_id = rule->up.table_id;
-    rule->tag = (victim ? victim->tag
-                 : table_id == 0 ? 0
-                 : rule_calculate_tag(&rule->up.cr.flow, &rule->up.cr.wc,
-                                      ofproto->tables[table_id].basis));
+    if (victim) {
+        rule->tag = victim->tag;
+    } else if (table_id == 0) {
+        rule->tag = 0;
+    } else {
+        struct flow flow;
+
+        miniflow_expand(&rule->up.cr.match.flow, &flow);
+        rule->tag = rule_calculate_tag(&flow, &rule->up.cr.match.mask,
+                                       ofproto->tables[table_id].basis);
+    }
 
     complete_operation(rule);
     return 0;
@@ -4697,24 +5442,24 @@ rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes)
     }
 }
 
-static enum ofperr
-rule_execute(struct rule *rule_, const struct flow *flow,
-             struct ofpbuf *packet)
+static void
+rule_dpif_execute(struct rule_dpif *rule, const struct flow *flow,
+                  struct ofpbuf *packet)
 {
-    struct rule_dpif *rule = rule_dpif_cast(rule_);
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
-
+    struct initial_vals initial_vals;
     struct dpif_flow_stats stats;
-
     struct action_xlate_ctx ctx;
     uint64_t odp_actions_stub[1024 / 8];
     struct ofpbuf odp_actions;
 
-    dpif_flow_stats_extract(flow, packet, &stats);
+    dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
     rule_credit_stats(rule, &stats);
 
+    initial_vals.vlan_tci = flow->vlan_tci;
+    initial_vals.tunnel_ip_tos = flow->tunnel.ip_tos;
     ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
-    action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci,
+    action_xlate_ctx_init(&ctx, ofproto, flow, &initial_vals,
                           rule, stats.tcp_flags, packet);
     ctx.resubmit_stats = &stats;
     xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len, &odp_actions);
@@ -4723,7 +5468,14 @@ rule_execute(struct rule *rule_, const struct flow *flow,
                         odp_actions.size, packet);
 
     ofpbuf_uninit(&odp_actions);
+}
 
+static enum ofperr
+rule_execute(struct rule *rule, const struct flow *flow,
+             struct ofpbuf *packet)
+{
+    rule_dpif_execute(rule_dpif_cast(rule), flow, packet);
+    ofpbuf_delete(packet);
     return 0;
 }
 
@@ -4731,15 +5483,6 @@ static void
 rule_modify_actions(struct rule *rule_)
 {
     struct rule_dpif *rule = rule_dpif_cast(rule_);
-    struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
-    enum ofperr error;
-
-    error = ofpacts_check(rule->up.ofpacts, rule->up.ofpacts_len,
-                          &rule->up.cr.flow, ofproto->max_ports);
-    if (error) {
-        ofoperation_complete(rule->up.pending, error);
-        return;
-    }
 
     complete_operation(rule);
 }
@@ -4751,28 +5494,68 @@ static int
 send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
 {
     const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
+    uint64_t odp_actions_stub[1024 / 8];
     struct ofpbuf key, odp_actions;
     struct odputil_keybuf keybuf;
-    uint16_t odp_port;
+    uint32_t odp_port;
     struct flow flow;
     int error;
 
-    flow_extract(packet, 0, 0, 0, &flow);
-    odp_port = vsp_realdev_to_vlandev(ofproto, ofport->odp_port,
-                                      flow.vlan_tci);
-    if (odp_port != ofport->odp_port) {
-        eth_pop_vlan(packet);
-        flow.vlan_tci = htons(0);
+    flow_extract(packet, 0, 0, NULL, OFPP_LOCAL, &flow);
+    if (netdev_vport_is_patch(ofport->up.netdev)) {
+        struct ofproto_dpif *peer_ofproto;
+        struct dpif_flow_stats stats;
+        struct ofport_dpif *peer;
+        struct rule_dpif *rule;
+
+        peer = ofport_get_peer(ofport);
+        if (!peer) {
+            return ENODEV;
+        }
+
+        dpif_flow_stats_extract(&flow, packet, time_msec(), &stats);
+        netdev_vport_inc_tx(ofport->up.netdev, &stats);
+        netdev_vport_inc_rx(peer->up.netdev, &stats);
+
+        flow.in_port = peer->up.ofp_port;
+        peer_ofproto = ofproto_dpif_cast(peer->up.ofproto);
+        rule = rule_dpif_lookup(peer_ofproto, &flow);
+        rule_dpif_execute(rule, &flow, packet);
+
+        return 0;
+    }
+
+    ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
+
+    if (ofport->tnl_port) {
+        struct dpif_flow_stats stats;
+
+        odp_port = tnl_port_send(ofport->tnl_port, &flow);
+        if (odp_port == OVSP_NONE) {
+            return ENODEV;
+        }
+
+        dpif_flow_stats_extract(&flow, packet, time_msec(), &stats);
+        netdev_vport_inc_tx(ofport->up.netdev, &stats);
+        odp_put_tunnel_action(&flow.tunnel, &odp_actions);
+        odp_put_skb_mark_action(flow.skb_mark, &odp_actions);
+    } else {
+        odp_port = vsp_realdev_to_vlandev(ofproto, ofport->odp_port,
+                                          flow.vlan_tci);
+        if (odp_port != ofport->odp_port) {
+            eth_pop_vlan(packet);
+            flow.vlan_tci = htons(0);
+        }
     }
 
     ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
-    odp_flow_key_from_flow(&key, &flow);
+    odp_flow_key_from_flow(&key, &flow,
+                           ofp_port_to_odp_port(ofproto, flow.in_port));
 
-    ofpbuf_init(&odp_actions, 32);
     compose_sflow_action(ofproto, &odp_actions, &flow, odp_port);
 
     nl_msg_put_u32(&odp_actions, OVS_ACTION_ATTR_OUTPUT, odp_port);
-    error = dpif_execute(ofproto->dpif,
+    error = dpif_execute(ofproto->backer->dpif,
                          key.data, key.size,
                          odp_actions.data, odp_actions.size,
                          packet);
@@ -4788,6 +5571,7 @@ send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
 \f
 /* OpenFlow to datapath action translation. */
 
+static bool may_receive(const struct ofport_dpif *, struct action_xlate_ctx *);
 static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len,
                              struct action_xlate_ctx *);
 static void xlate_normal(struct action_xlate_ctx *);
@@ -4817,8 +5601,8 @@ compose_slow_path(const struct ofproto_dpif *ofproto, const struct flow *flow,
 
     ofpbuf_use_stack(&buf, stub, stub_size);
     if (slow & (SLOW_CFM | SLOW_LACP | SLOW_STP)) {
-        uint32_t pid = dpif_port_get_pid(ofproto->dpif, UINT16_MAX);
-        odp_put_userspace_action(pid, &cookie, &buf);
+        uint32_t pid = dpif_port_get_pid(ofproto->backer->dpif, UINT32_MAX);
+        odp_put_userspace_action(pid, &cookie, sizeof cookie, &buf);
     } else {
         put_userspace_action(ofproto, &buf, flow, &cookie);
     }
@@ -4834,10 +5618,10 @@ put_userspace_action(const struct ofproto_dpif *ofproto,
 {
     uint32_t pid;
 
-    pid = dpif_port_get_pid(ofproto->dpif,
-                            ofp_port_to_odp_port(flow->in_port));
+    pid = dpif_port_get_pid(ofproto->backer->dpif,
+                            ofp_port_to_odp_port(ofproto, flow->in_port));
 
-    return odp_put_userspace_action(pid, cookie, odp_actions);
+    return odp_put_userspace_action(pid, cookie, sizeof *cookie, odp_actions);
 }
 
 static void
@@ -4932,7 +5716,7 @@ fix_sflow_action(struct action_xlate_ctx *ctx)
 
     cookie = ofpbuf_at(ctx->odp_actions, ctx->user_cookie_offset,
                        sizeof(*cookie));
-    assert(cookie->type == USER_ACTION_COOKIE_SFLOW);
+    ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW);
 
     compose_sflow_cookie(ctx->ofproto, base->vlan_tci,
                          ctx->sflow_odp_port, ctx->sflow_n_outputs, cookie);
@@ -4943,34 +5727,108 @@ compose_output_action__(struct action_xlate_ctx *ctx, uint16_t ofp_port,
                         bool check_stp)
 {
     const struct ofport_dpif *ofport = get_ofp_port(ctx->ofproto, ofp_port);
-    uint16_t odp_port = ofp_port_to_odp_port(ofp_port);
     ovs_be16 flow_vlan_tci = ctx->flow.vlan_tci;
+    ovs_be64 flow_tun_id = ctx->flow.tunnel.tun_id;
     uint8_t flow_nw_tos = ctx->flow.nw_tos;
-    uint16_t out_port;
+    struct priority_to_dscp *pdscp;
+    uint32_t out_port, odp_port;
 
-    if (ofport) {
-        struct priority_to_dscp *pdscp;
+    /* If 'struct flow' gets additional metadata, we'll need to zero it out
+     * before traversing a patch port. */
+    BUILD_ASSERT_DECL(FLOW_WC_SEQ == 20);
+
+    if (!ofport) {
+        xlate_report(ctx, "Nonexistent output port");
+        return;
+    } else if (ofport->up.pp.config & OFPUTIL_PC_NO_FWD) {
+        xlate_report(ctx, "OFPPC_NO_FWD set, skipping output");
+        return;
+    } else if (check_stp && !stp_forward_in_state(ofport->stp_state)) {
+        xlate_report(ctx, "STP not in forwarding state, skipping output");
+        return;
+    }
 
-        if (ofport->up.pp.config & OFPUTIL_PC_NO_FWD
-            || (check_stp && !stp_forward_in_state(ofport->stp_state))) {
+    if (netdev_vport_is_patch(ofport->up.netdev)) {
+        struct ofport_dpif *peer = ofport_get_peer(ofport);
+        struct flow old_flow = ctx->flow;
+        const struct ofproto_dpif *peer_ofproto;
+        enum slow_path_reason special;
+        struct ofport_dpif *in_port;
+
+        if (!peer) {
+            xlate_report(ctx, "Nonexistent patch port peer");
             return;
         }
 
-        pdscp = get_priority(ofport, ctx->flow.skb_priority);
-        if (pdscp) {
-            ctx->flow.nw_tos &= ~IP_DSCP_MASK;
-            ctx->flow.nw_tos |= pdscp->dscp;
+        peer_ofproto = ofproto_dpif_cast(peer->up.ofproto);
+        if (peer_ofproto->backer != ctx->ofproto->backer) {
+            xlate_report(ctx, "Patch port peer on a different datapath");
+            return;
         }
-    } else {
-        /* We may not have an ofport record for this port, but it doesn't hurt
-         * to allow forwarding to it anyhow.  Maybe such a port will appear
-         * later and we're pre-populating the flow table.  */
+
+        ctx->ofproto = ofproto_dpif_cast(peer->up.ofproto);
+        ctx->flow.in_port = peer->up.ofp_port;
+        ctx->flow.metadata = htonll(0);
+        memset(&ctx->flow.tunnel, 0, sizeof ctx->flow.tunnel);
+        memset(ctx->flow.regs, 0, sizeof ctx->flow.regs);
+
+        in_port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
+        special = process_special(ctx->ofproto, &ctx->flow, in_port,
+                                  ctx->packet);
+        if (special) {
+            ctx->slow |= special;
+        } else if (!in_port || may_receive(in_port, ctx)) {
+            if (!in_port || stp_forward_in_state(in_port->stp_state)) {
+                xlate_table_action(ctx, ctx->flow.in_port, 0, true);
+            } else {
+                /* Forwarding is disabled by STP.  Let OFPP_NORMAL and the
+                 * learning action look at the packet, then drop it. */
+                struct flow old_base_flow = ctx->base_flow;
+                size_t old_size = ctx->odp_actions->size;
+                xlate_table_action(ctx, ctx->flow.in_port, 0, true);
+                ctx->base_flow = old_base_flow;
+                ctx->odp_actions->size = old_size;
+            }
+        }
+
+        ctx->flow = old_flow;
+        ctx->ofproto = ofproto_dpif_cast(ofport->up.ofproto);
+
+        if (ctx->resubmit_stats) {
+            netdev_vport_inc_tx(ofport->up.netdev, ctx->resubmit_stats);
+            netdev_vport_inc_rx(peer->up.netdev, ctx->resubmit_stats);
+        }
+
+        return;
+    }
+
+    pdscp = get_priority(ofport, ctx->flow.skb_priority);
+    if (pdscp) {
+        ctx->flow.nw_tos &= ~IP_DSCP_MASK;
+        ctx->flow.nw_tos |= pdscp->dscp;
     }
 
-    out_port = vsp_realdev_to_vlandev(ctx->ofproto, odp_port,
-                                      ctx->flow.vlan_tci);
-    if (out_port != odp_port) {
-        ctx->flow.vlan_tci = htons(0);
+    if (ofport->tnl_port) {
+        odp_port = tnl_port_send(ofport->tnl_port, &ctx->flow);
+        if (odp_port == OVSP_NONE) {
+            xlate_report(ctx, "Tunneling decided against output");
+            return;
+        }
+
+        if (ctx->resubmit_stats) {
+            netdev_vport_inc_tx(ofport->up.netdev, ctx->resubmit_stats);
+        }
+        out_port = odp_port;
+        commit_odp_tunnel_action(&ctx->flow, &ctx->base_flow,
+                                 ctx->odp_actions);
+    } else {
+        odp_port = ofport->odp_port;
+        out_port = vsp_realdev_to_vlandev(ctx->ofproto, odp_port,
+                                          ctx->flow.vlan_tci);
+        if (out_port != odp_port) {
+            ctx->flow.vlan_tci = htons(0);
+        }
+        ctx->flow.skb_mark &= ~IPSEC_MARK;
     }
     commit_odp_actions(&ctx->flow, &ctx->base_flow, ctx->odp_actions);
     nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_OUTPUT, out_port);
@@ -4978,6 +5836,7 @@ compose_output_action__(struct action_xlate_ctx *ctx, uint16_t ofp_port,
     ctx->sflow_odp_port = odp_port;
     ctx->sflow_n_outputs++;
     ctx->nf_output_iface = ofp_port;
+    ctx->flow.tunnel.tun_id = flow_tun_id;
     ctx->flow.vlan_tci = flow_vlan_tci;
     ctx->flow.nw_tos = flow_nw_tos;
 }
@@ -4988,51 +5847,74 @@ compose_output_action(struct action_xlate_ctx *ctx, uint16_t ofp_port)
     compose_output_action__(ctx, ofp_port, true);
 }
 
+static void
+tag_the_flow(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
+{
+    struct ofproto_dpif *ofproto = ctx->ofproto;
+    uint8_t table_id = ctx->table_id;
+
+    if (table_id > 0 && table_id < N_TABLES) {
+        struct table_dpif *table = &ofproto->tables[table_id];
+        if (table->other_table) {
+            ctx->tags |= (rule && rule->tag
+                          ? rule->tag
+                          : rule_calculate_tag(&ctx->flow,
+                                               &table->other_table->mask,
+                                               table->basis));
+        }
+    }
+}
+
+/* Common rule processing in one place to avoid duplicating code. */
+static struct rule_dpif *
+ctx_rule_hooks(struct action_xlate_ctx *ctx, struct rule_dpif *rule,
+               bool may_packet_in)
+{
+    if (ctx->resubmit_hook) {
+        ctx->resubmit_hook(ctx, rule);
+    }
+    if (rule == NULL && may_packet_in) {
+        /* XXX
+         * check if table configuration flags
+         * OFPTC_TABLE_MISS_CONTROLLER, default.
+         * OFPTC_TABLE_MISS_CONTINUE,
+         * OFPTC_TABLE_MISS_DROP
+         * When OF1.0, OFPTC_TABLE_MISS_CONTINUE is used. What to do?
+         */
+        rule = rule_dpif_miss_rule(ctx->ofproto, &ctx->flow);
+    }
+    if (rule && ctx->resubmit_stats) {
+        rule_credit_stats(rule, ctx->resubmit_stats);
+    }
+    return rule;
+}
+
 static void
 xlate_table_action(struct action_xlate_ctx *ctx,
-                   uint16_t in_port, uint8_t table_id)
+                   uint16_t in_port, uint8_t table_id, bool may_packet_in)
 {
     if (ctx->recurse < MAX_RESUBMIT_RECURSION) {
-        struct ofproto_dpif *ofproto = ctx->ofproto;
         struct rule_dpif *rule;
-        uint16_t old_in_port;
-        uint8_t old_table_id;
+        uint16_t old_in_port = ctx->flow.in_port;
+        uint8_t old_table_id = ctx->table_id;
 
-        old_table_id = ctx->table_id;
         ctx->table_id = table_id;
 
         /* Look up a flow with 'in_port' as the input port. */
-        old_in_port = ctx->flow.in_port;
         ctx->flow.in_port = in_port;
-        rule = rule_dpif_lookup__(ofproto, &ctx->flow, table_id);
-
-        /* Tag the flow. */
-        if (table_id > 0 && table_id < N_TABLES) {
-            struct table_dpif *table = &ofproto->tables[table_id];
-            if (table->other_table) {
-                ctx->tags |= (rule && rule->tag
-                              ? rule->tag
-                              : rule_calculate_tag(&ctx->flow,
-                                                   &table->other_table->wc,
-                                                   table->basis));
-            }
-        }
+        rule = rule_dpif_lookup__(ctx->ofproto, &ctx->flow, table_id);
+
+        tag_the_flow(ctx, rule);
 
         /* Restore the original input port.  Otherwise OFPP_NORMAL and
          * OFPP_IN_PORT will have surprising behavior. */
         ctx->flow.in_port = old_in_port;
 
-        if (ctx->resubmit_hook) {
-            ctx->resubmit_hook(ctx, rule);
-        }
+        rule = ctx_rule_hooks(ctx, rule, may_packet_in);
 
         if (rule) {
             struct rule_dpif *old_rule = ctx->rule;
 
-            if (ctx->resubmit_stats) {
-                rule_credit_stats(rule, ctx->resubmit_stats);
-            }
-
             ctx->recurse++;
             ctx->rule = rule;
             do_xlate_actions(rule->up.ofpacts, rule->up.ofpacts_len, ctx);
@@ -5067,7 +5949,7 @@ xlate_ofpact_resubmit(struct action_xlate_ctx *ctx,
         table_id = ctx->table_id;
     }
 
-    xlate_table_action(ctx, in_port, table_id);
+    xlate_table_action(ctx, in_port, table_id, false);
 }
 
 static void
@@ -5109,16 +5991,11 @@ execute_controller_action(struct action_xlate_ctx *ctx, int len,
 
     if (packet->l2 && packet->l3) {
         struct eth_header *eh;
+        uint16_t mpls_depth;
 
         eth_pop_vlan(packet);
         eh = packet->l2;
 
-        /* If the Ethernet type is less than ETH_TYPE_MIN, it's likely an 802.2
-         * LLC frame.  Calculating the Ethernet type of these frames is more
-         * trouble than seems appropriate for a simple assertion. */
-        assert(ntohs(eh->eth_type) < ETH_TYPE_MIN
-               || eh->eth_type == ctx->flow.dl_type);
-
         memcpy(eh->eth_src, ctx->flow.dl_src, sizeof eh->eth_src);
         memcpy(eh->eth_dst, ctx->flow.dl_dst, sizeof eh->eth_dst);
 
@@ -5126,6 +6003,16 @@ execute_controller_action(struct action_xlate_ctx *ctx, int len,
             eth_push_vlan(packet, ctx->flow.vlan_tci);
         }
 
+        mpls_depth = eth_mpls_depth(packet);
+
+        if (mpls_depth < ctx->flow.mpls_depth) {
+            push_mpls(packet, ctx->flow.dl_type, ctx->flow.mpls_lse);
+        } else if (mpls_depth > ctx->flow.mpls_depth) {
+            pop_mpls(packet, ctx->flow.dl_type);
+        } else if (mpls_depth) {
+            set_mpls_lse(packet, ctx->flow.mpls_lse);
+        }
+
         if (packet->l4) {
             if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
                 packet_set_ipv4(packet, ctx->flow.nw_src, ctx->flow.nw_dst,
@@ -5158,6 +6045,46 @@ execute_controller_action(struct action_xlate_ctx *ctx, int len,
     ofpbuf_delete(packet);
 }
 
+static void
+execute_mpls_push_action(struct action_xlate_ctx *ctx, ovs_be16 eth_type)
+{
+    ovs_assert(eth_type_mpls(eth_type));
+
+    if (ctx->base_flow.mpls_depth) {
+        ctx->flow.mpls_lse &= ~htonl(MPLS_BOS_MASK);
+        ctx->flow.mpls_depth++;
+    } else {
+        ovs_be32 label;
+        uint8_t tc, ttl;
+
+        if (ctx->flow.dl_type == htons(ETH_TYPE_IPV6)) {
+            label = htonl(0x2); /* IPV6 Explicit Null. */
+        } else {
+            label = htonl(0x0); /* IPV4 Explicit Null. */
+        }
+        tc = (ctx->flow.nw_tos & IP_DSCP_MASK) >> 2;
+        ttl = ctx->flow.nw_ttl ? ctx->flow.nw_ttl : 0x40;
+        ctx->flow.mpls_lse = set_mpls_lse_values(ttl, tc, 1, label);
+        ctx->flow.mpls_depth = 1;
+    }
+    ctx->flow.dl_type = eth_type;
+}
+
+static void
+execute_mpls_pop_action(struct action_xlate_ctx *ctx, ovs_be16 eth_type)
+{
+    ovs_assert(eth_type_mpls(ctx->flow.dl_type));
+    ovs_assert(!eth_type_mpls(eth_type));
+
+    if (ctx->flow.mpls_depth) {
+        ctx->flow.mpls_depth--;
+        ctx->flow.mpls_lse = htonl(0);
+        if (!ctx->flow.mpls_depth) {
+            ctx->flow.dl_type = eth_type;
+        }
+    }
+}
+
 static bool
 compose_dec_ttl(struct action_xlate_ctx *ctx, struct ofpact_cnt_ids *ids)
 {
@@ -5182,9 +6109,41 @@ compose_dec_ttl(struct action_xlate_ctx *ctx, struct ofpact_cnt_ids *ids)
     }
 }
 
+static bool
+execute_set_mpls_ttl_action(struct action_xlate_ctx *ctx, uint8_t ttl)
+{
+    if (!eth_type_mpls(ctx->flow.dl_type)) {
+        return true;
+    }
+
+    set_mpls_lse_ttl(&ctx->flow.mpls_lse, ttl);
+    return false;
+}
+
+static bool
+execute_dec_mpls_ttl_action(struct action_xlate_ctx *ctx)
+{
+    uint8_t ttl = mpls_lse_to_ttl(ctx->flow.mpls_lse);
+
+    if (!eth_type_mpls(ctx->flow.dl_type)) {
+        return false;
+    }
+
+    if (ttl > 1) {
+        ttl--;
+        set_mpls_lse_ttl(&ctx->flow.mpls_lse, ttl);
+        return false;
+    } else {
+        execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0);
+
+        /* Stop processing for current table. */
+        return true;
+    }
+}
+
 static void
 xlate_output_action(struct action_xlate_ctx *ctx,
-                    uint16_t port, uint16_t max_len)
+                    uint16_t port, uint16_t max_len, bool may_packet_in)
 {
     uint16_t prev_nf_output_iface = ctx->nf_output_iface;
 
@@ -5195,7 +6154,7 @@ xlate_output_action(struct action_xlate_ctx *ctx,
         compose_output_action(ctx, ctx->flow.in_port);
         break;
     case OFPP_TABLE:
-        xlate_table_action(ctx, ctx->flow.in_port, 0);
+        xlate_table_action(ctx, ctx->flow.in_port, 0, may_packet_in);
         break;
     case OFPP_NORMAL:
         xlate_normal(ctx);
@@ -5215,6 +6174,8 @@ xlate_output_action(struct action_xlate_ctx *ctx,
     default:
         if (port != ctx->flow.in_port) {
             compose_output_action(ctx, port);
+        } else {
+            xlate_report(ctx, "skipping output to input port");
         }
         break;
     }
@@ -5235,7 +6196,7 @@ xlate_output_reg_action(struct action_xlate_ctx *ctx,
 {
     uint64_t port = mf_get_subfield(&or->src, &ctx->flow);
     if (port <= UINT16_MAX) {
-        xlate_output_action(ctx, port, or->max_len);
+        xlate_output_action(ctx, port, or->max_len, false);
     }
 }
 
@@ -5249,10 +6210,11 @@ xlate_enqueue_action(struct action_xlate_ctx *ctx,
     int error;
 
     /* Translate queue to priority. */
-    error = dpif_queue_to_priority(ctx->ofproto->dpif, queue_id, &priority);
+    error = dpif_queue_to_priority(ctx->ofproto->backer->dpif,
+                                   queue_id, &priority);
     if (error) {
         /* Fall back to ordinary output action. */
-        xlate_output_action(ctx, enqueue->port, 0);
+        xlate_output_action(ctx, enqueue->port, 0, false);
         return;
     }
 
@@ -5282,7 +6244,8 @@ xlate_set_queue_action(struct action_xlate_ctx *ctx, uint32_t queue_id)
 {
     uint32_t skb_priority;
 
-    if (!dpif_queue_to_priority(ctx->ofproto->dpif, queue_id, &skb_priority)) {
+    if (!dpif_queue_to_priority(ctx->ofproto->backer->dpif,
+                                queue_id, &skb_priority)) {
         ctx->flow.skb_priority = skb_priority;
     } else {
         /* Couldn't translate queue to a priority.  Nothing to do.  A warning
@@ -5295,26 +6258,6 @@ struct xlate_reg_state {
     ovs_be64 tun_id;
 };
 
-static void
-xlate_autopath(struct action_xlate_ctx *ctx,
-               const struct ofpact_autopath *ap)
-{
-    uint16_t ofp_port = ap->port;
-    struct ofport_dpif *port = get_ofp_port(ctx->ofproto, ofp_port);
-
-    if (!port || !port->bundle) {
-        ofp_port = OFPP_NONE;
-    } else if (port->bundle->bond) {
-        /* Autopath does not support VLAN hashing. */
-        struct ofport_dpif *slave = bond_choose_output_slave(
-            port->bundle->bond, &ctx->flow, 0, &ctx->tags);
-        if (slave) {
-            ofp_port = slave->up.ofp_port;
-        }
-    }
-    nxm_reg_load(&ap->dst, ofp_port, &ctx->flow);
-}
-
 static bool
 slave_enabled_cb(uint16_t ofp_port, void *ofproto_)
 {
@@ -5347,7 +6290,7 @@ xlate_bundle_action(struct action_xlate_ctx *ctx,
     if (bundle->dst.field) {
         nxm_reg_load(&bundle->dst, port, &ctx->flow);
     } else {
-        xlate_output_action(ctx, port, 0);
+        xlate_output_action(ctx, port, 0, false);
     }
 }
 
@@ -5416,27 +6359,41 @@ may_receive(const struct ofport_dpif *port, struct action_xlate_ctx *ctx)
     return true;
 }
 
+static bool
+tunnel_ecn_ok(struct action_xlate_ctx *ctx)
+{
+    if (is_ip_any(&ctx->base_flow)
+        && (ctx->base_flow.tunnel.ip_tos & IP_ECN_MASK) == IP_ECN_CE) {
+        if ((ctx->base_flow.nw_tos & IP_ECN_MASK) == IP_ECN_NOT_ECT) {
+            VLOG_WARN_RL(&rl, "dropping tunnel packet marked ECN CE"
+                         " but is not ECN capable");
+            return false;
+        } else {
+            /* Set the ECN CE value in the tunneled packet. */
+            ctx->flow.nw_tos |= IP_ECN_CE;
+        }
+    }
+
+    return true;
+}
+
 static void
 do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len,
                  struct action_xlate_ctx *ctx)
 {
-    const struct ofport_dpif *port;
     bool was_evictable = true;
     const struct ofpact *a;
 
-    port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
-    if (port && !may_receive(port, ctx)) {
-        /* Drop this flow. */
-        return;
-    }
-
     if (ctx->rule) {
         /* Don't let the rule we're working on get evicted underneath us. */
         was_evictable = ctx->rule->up.evictable;
         ctx->rule->up.evictable = false;
     }
+
+ do_xlate_actions_again:
     OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
         struct ofpact_controller *controller;
+        const struct ofpact_metadata *metadata;
 
         if (ctx->exit) {
             break;
@@ -5445,7 +6402,7 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len,
         switch (a->type) {
         case OFPACT_OUTPUT:
             xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port,
-                                ofpact_get_OUTPUT(a)->max_len);
+                                ofpact_get_OUTPUT(a)->max_len, true);
             break;
 
         case OFPACT_CONTROLLER:
@@ -5476,6 +6433,11 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len,
             ctx->flow.vlan_tci = htons(0);
             break;
 
+        case OFPACT_PUSH_VLAN:
+            /* XXX 802.1AD(QinQ) */
+            ctx->flow.vlan_tci = htons(VLAN_CFI);
+            break;
+
         case OFPACT_SET_ETH_SRC:
             memcpy(ctx->flow.dl_src, ofpact_get_SET_ETH_SRC(a)->mac,
                    ETH_ADDR_LEN);
@@ -5487,11 +6449,15 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len,
             break;
 
         case OFPACT_SET_IPV4_SRC:
-            ctx->flow.nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4;
+            if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
+                ctx->flow.nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4;
+            }
             break;
 
         case OFPACT_SET_IPV4_DST:
-            ctx->flow.nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4;
+            if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
+                ctx->flow.nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4;
+            }
             break;
 
         case OFPACT_SET_IPV4_DSCP:
@@ -5503,11 +6469,15 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len,
             break;
 
         case OFPACT_SET_L4_SRC_PORT:
-            ctx->flow.tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port);
+            if (is_ip_any(&ctx->flow)) {
+                ctx->flow.tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port);
+            }
             break;
 
         case OFPACT_SET_L4_DST_PORT:
-            ctx->flow.tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port);
+            if (is_ip_any(&ctx->flow)) {
+                ctx->flow.tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port);
+            }
             break;
 
         case OFPACT_RESUBMIT:
@@ -5515,7 +6485,7 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len,
             break;
 
         case OFPACT_SET_TUNNEL:
-            ctx->flow.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id);
+            ctx->flow.tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id);
             break;
 
         case OFPACT_SET_QUEUE:
@@ -5534,6 +6504,36 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len,
             nxm_execute_reg_load(ofpact_get_REG_LOAD(a), &ctx->flow);
             break;
 
+        case OFPACT_STACK_PUSH:
+            nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), &ctx->flow,
+                                   &ctx->stack);
+            break;
+
+        case OFPACT_STACK_POP:
+            nxm_execute_stack_pop(ofpact_get_STACK_POP(a), &ctx->flow,
+                                  &ctx->stack);
+            break;
+
+        case OFPACT_PUSH_MPLS:
+            execute_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)->ethertype);
+            break;
+
+        case OFPACT_POP_MPLS:
+            execute_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype);
+            break;
+
+        case OFPACT_SET_MPLS_TTL:
+            if (execute_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl)) {
+                goto out;
+            }
+            break;
+
+        case OFPACT_DEC_MPLS_TTL:
+            if (execute_dec_mpls_ttl_action(ctx)) {
+                goto out;
+            }
+            break;
+
         case OFPACT_DEC_TTL:
             if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) {
                 goto out;
@@ -5548,10 +6548,6 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len,
             multipath_execute(ofpact_get_MULTIPATH(a), &ctx->flow);
             break;
 
-        case OFPACT_AUTOPATH:
-            xlate_autopath(ctx, ofpact_get_AUTOPATH(a));
-            break;
-
         case OFPACT_BUNDLE:
             ctx->ofproto->has_bundle_action = true;
             xlate_bundle_action(ctx, ofpact_get_BUNDLE(a));
@@ -5576,16 +6572,56 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len,
             ctx->has_fin_timeout = true;
             xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a));
             break;
+
+        case OFPACT_CLEAR_ACTIONS:
+            /* XXX
+             * Nothing to do because writa-actions is not supported for now.
+             * When writa-actions is supported, clear-actions also must
+             * be supported at the same time.
+             */
+            break;
+
+        case OFPACT_WRITE_METADATA:
+            metadata = ofpact_get_WRITE_METADATA(a);
+            ctx->flow.metadata &= ~metadata->mask;
+            ctx->flow.metadata |= metadata->metadata & metadata->mask;
+            break;
+
+        case OFPACT_GOTO_TABLE: {
+            /* It is assumed that goto-table is the last action. */
+            struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a);
+            struct rule_dpif *rule;
+
+            ovs_assert(ctx->table_id < ogt->table_id);
+
+            ctx->table_id = ogt->table_id;
+
+            /* Look up a flow from the new table. */
+            rule = rule_dpif_lookup__(ctx->ofproto, &ctx->flow, ctx->table_id);
+
+            tag_the_flow(ctx, rule);
+
+            rule = ctx_rule_hooks(ctx, rule, true);
+
+            if (rule) {
+                if (ctx->rule) {
+                    ctx->rule->up.evictable = was_evictable;
+                }
+                ctx->rule = rule;
+                was_evictable = rule->up.evictable;
+                rule->up.evictable = false;
+
+                /* Tail recursion removal. */
+                ofpacts = rule->up.ofpacts;
+                ofpacts_len = rule->up.ofpacts_len;
+                goto do_xlate_actions_again;
+            }
+            break;
+        }
         }
     }
 
 out:
-    /* We've let OFPP_NORMAL and the learning action look at the packet,
-     * so drop it now if forwarding is disabled. */
-    if (port && !stp_forward_in_state(port->stp_state)) {
-        ofpbuf_clear(ctx->odp_actions);
-        add_sflow_action(ctx);
-    }
     if (ctx->rule) {
         ctx->rule->up.evictable = was_evictable;
     }
@@ -5594,14 +6630,40 @@ out:
 static void
 action_xlate_ctx_init(struct action_xlate_ctx *ctx,
                       struct ofproto_dpif *ofproto, const struct flow *flow,
-                      ovs_be16 initial_tci, struct rule_dpif *rule,
+                      const struct initial_vals *initial_vals,
+                      struct rule_dpif *rule,
                       uint8_t tcp_flags, const struct ofpbuf *packet)
 {
+    ovs_be64 initial_tun_id = flow->tunnel.tun_id;
+
+    /* Flow initialization rules:
+     * - 'base_flow' must match the kernel's view of the packet at the
+     *   time that action processing starts.  'flow' represents any
+     *   transformations we wish to make through actions.
+     * - By default 'base_flow' and 'flow' are the same since the input
+     *   packet matches the output before any actions are applied.
+     * - When using VLAN splinters, 'base_flow''s VLAN is set to the value
+     *   of the received packet as seen by the kernel.  If we later output
+     *   to another device without any modifications this will cause us to
+     *   insert a new tag since the original one was stripped off by the
+     *   VLAN device.
+     * - Tunnel 'flow' is largely cleared when transitioning between
+     *   the input and output stages since it does not make sense to output
+     *   a packet with the exact headers that it was received with (i.e.
+     *   the destination IP is us).  The one exception is the tun_id, which
+     *   is preserved to allow use in later resubmit lookups and loads into
+     *   registers.
+     * - Tunnel 'base_flow' is completely cleared since that is what the
+     *   kernel does.  If we wish to maintain the original values an action
+     *   needs to be generated. */
+
     ctx->ofproto = ofproto;
     ctx->flow = *flow;
+    memset(&ctx->flow.tunnel, 0, sizeof ctx->flow.tunnel);
     ctx->base_flow = ctx->flow;
-    ctx->base_flow.tun_id = 0;
-    ctx->base_flow.vlan_tci = initial_tci;
+    ctx->base_flow.vlan_tci = initial_vals->vlan_tci;
+    ctx->base_flow.tunnel.ip_tos = initial_vals->tunnel_ip_tos;
+    ctx->flow.tunnel.tun_id = initial_tun_id;
     ctx->rule = rule;
     ctx->packet = packet;
     ctx->may_learn = packet != NULL;
@@ -5624,6 +6686,8 @@ xlate_actions(struct action_xlate_ctx *ctx,
     static bool hit_resubmit_limit;
 
     enum slow_path_reason special;
+    struct ofport_dpif *in_port;
+    struct flow orig_flow;
 
     COVERAGE_INC(ofproto_dpif_xlate);
 
@@ -5644,14 +6708,12 @@ xlate_actions(struct action_xlate_ctx *ctx,
     ctx->table_id = 0;
     ctx->exit = false;
 
+    ofpbuf_use_stub(&ctx->stack, ctx->init_stack, sizeof ctx->init_stack);
+
     if (ctx->ofproto->has_mirrors || hit_resubmit_limit) {
         /* Do this conditionally because the copy is expensive enough that it
-         * shows up in profiles.
-         *
-         * We keep orig_flow in 'ctx' only because I couldn't make GCC 4.4
-         * believe that I wasn't using it without initializing it if I kept it
-         * in a local variable. */
-        ctx->orig_flow = ctx->flow;
+         * shows up in profiles. */
+        orig_flow = ctx->flow;
     }
 
     if (ctx->flow.nw_frag & FLOW_NW_FRAG_ANY) {
@@ -5677,15 +6739,30 @@ xlate_actions(struct action_xlate_ctx *ctx,
         }
     }
 
-    special = process_special(ctx->ofproto, &ctx->flow, ctx->packet);
+    in_port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
+    special = process_special(ctx->ofproto, &ctx->flow, in_port, ctx->packet);
     if (special) {
         ctx->slow |= special;
     } else {
         static struct vlog_rate_limit trace_rl = VLOG_RATE_LIMIT_INIT(1, 1);
-        ovs_be16 initial_tci = ctx->base_flow.vlan_tci;
+        struct initial_vals initial_vals;
+        uint32_t local_odp_port;
+
+        initial_vals.vlan_tci = ctx->base_flow.vlan_tci;
+        initial_vals.tunnel_ip_tos = ctx->base_flow.tunnel.ip_tos;
 
         add_sflow_action(ctx);
-        do_xlate_actions(ofpacts, ofpacts_len, ctx);
+
+        if (tunnel_ecn_ok(ctx) && (!in_port || may_receive(in_port, ctx))) {
+            do_xlate_actions(ofpacts, ofpacts_len, ctx);
+
+            /* We've let OFPP_NORMAL and the learning action look at the
+             * packet, so drop it now if forwarding is disabled. */
+            if (in_port && !stp_forward_in_state(in_port->stp_state)) {
+                ofpbuf_clear(ctx->odp_actions);
+                add_sflow_action(ctx);
+            }
+        }
 
         if (ctx->max_resubmit_trigger && !ctx->resubmit_hook) {
             if (!hit_resubmit_limit) {
@@ -5695,15 +6772,17 @@ xlate_actions(struct action_xlate_ctx *ctx,
             } else if (!VLOG_DROP_ERR(&trace_rl)) {
                 struct ds ds = DS_EMPTY_INITIALIZER;
 
-                ofproto_trace(ctx->ofproto, &ctx->orig_flow, ctx->packet,
-                              initial_tci, &ds);
+                ofproto_trace(ctx->ofproto, &orig_flow, ctx->packet,
+                              &initial_vals, &ds);
                 VLOG_ERR("Trace triggered by excessive resubmit "
                          "recursion:\n%s", ds_cstr(&ds));
                 ds_destroy(&ds);
             }
         }
 
+        local_odp_port = ofp_port_to_odp_port(ctx->ofproto, OFPP_LOCAL);
         if (!connmgr_may_set_up_flow(ctx->ofproto->up.connmgr, &ctx->flow,
+                                     local_odp_port,
                                      ctx->odp_actions->data,
                                      ctx->odp_actions->size)) {
             ctx->slow |= SLOW_IN_BAND;
@@ -5714,10 +6793,12 @@ xlate_actions(struct action_xlate_ctx *ctx,
             }
         }
         if (ctx->ofproto->has_mirrors) {
-            add_mirror_actions(ctx, &ctx->orig_flow);
+            add_mirror_actions(ctx, &orig_flow);
         }
         fix_sflow_action(ctx);
     }
+
+    ofpbuf_uninit(&ctx->stack);
 }
 
 /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts'
@@ -5990,7 +7071,7 @@ add_mirror_actions(struct action_xlate_ctx *ctx, const struct flow *orig_flow)
         m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
 
         if (!vlan_is_mirrored(m, vlan)) {
-            mirrors &= mirrors - 1;
+            mirrors = zero_rightmost_1bit(mirrors);
             continue;
         }
 
@@ -6020,7 +7101,7 @@ update_mirror_stats(struct ofproto_dpif *ofproto, mirror_mask_t mirrors,
         return;
     }
 
-    for (; mirrors; mirrors &= mirrors - 1) {
+    for (; mirrors; mirrors = zero_rightmost_1bit(mirrors)) {
         struct ofmirror *m;
 
         m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
@@ -6090,7 +7171,7 @@ update_learning_table(struct ofproto_dpif *ofproto,
                     in_bundle->name, vlan);
 
         mac->port.p = in_bundle;
-        tag_set_add(&ofproto->revalidate_set,
+        tag_set_add(&ofproto->backer->revalidate_set,
                     mac_learning_changed(ofproto->ml, mac));
     }
 }
@@ -6303,18 +7384,17 @@ xlate_normal(struct action_xlate_ctx *ctx)
  * a few more, but not all of the facets or even all of the facets that
  * resubmit to the table modified by MAC learning). */
 
-/* Calculates the tag to use for 'flow' and wildcards 'wc' when it is inserted
+/* Calculates the tag to use for 'flow' and mask 'mask' when it is inserted
  * into an OpenFlow table with the given 'basis'. */
 static tag_type
-rule_calculate_tag(const struct flow *flow, const struct flow_wildcards *wc,
+rule_calculate_tag(const struct flow *flow, const struct minimask *mask,
                    uint32_t secret)
 {
-    if (flow_wildcards_is_catchall(wc)) {
+    if (minimask_is_catchall(mask)) {
         return 0;
     } else {
-        struct flow tag_flow = *flow;
-        flow_zero_wildcards(&tag_flow, wc);
-        return tag_create_deterministic(flow_hash(&tag_flow, secret));
+        uint32_t hash = flow_hash_in_minimask(flow, mask, secret);
+        return tag_create_deterministic(hash);
     }
 }
 
@@ -6367,7 +7447,7 @@ table_update_taggable(struct ofproto_dpif *ofproto, uint8_t table_id)
     if (table->catchall_table != catchall || table->other_table != other) {
         table->catchall_table = catchall;
         table->other_table = other;
-        ofproto->need_revalidate = REV_FLOW_TABLE;
+        ofproto->backer->need_revalidate = REV_FLOW_TABLE;
     }
 }
 
@@ -6385,13 +7465,13 @@ rule_invalidate(const struct rule_dpif *rule)
 
     table_update_taggable(ofproto, rule->up.table_id);
 
-    if (!ofproto->need_revalidate) {
+    if (!ofproto->backer->need_revalidate) {
         struct table_dpif *table = &ofproto->tables[rule->up.table_id];
 
         if (table->other_table && rule->tag) {
-            tag_set_add(&ofproto->revalidate_set, rule->tag);
+            tag_set_add(&ofproto->backer->revalidate_set, rule->tag);
         } else {
-            ofproto->need_revalidate = REV_FLOW_TABLE;
+            ofproto->backer->need_revalidate = REV_FLOW_TABLE;
         }
     }
 }
@@ -6401,9 +7481,8 @@ set_frag_handling(struct ofproto *ofproto_,
                   enum ofp_config_flags frag_handling)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
-
     if (frag_handling != OFPC_FRAG_REASM) {
-        ofproto->need_revalidate = REV_RECONFIGURE;
+        ofproto->backer->need_revalidate = REV_RECONFIGURE;
         return true;
     } else {
         return false;
@@ -6416,40 +7495,36 @@ packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
            const struct ofpact *ofpacts, size_t ofpacts_len)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
-    enum ofperr error;
-
-    if (flow->in_port >= ofproto->max_ports && flow->in_port < OFPP_MAX) {
-        return OFPERR_NXBRC_BAD_IN_PORT;
-    }
+    struct initial_vals initial_vals;
+    struct odputil_keybuf keybuf;
+    struct dpif_flow_stats stats;
 
-    error = ofpacts_check(ofpacts, ofpacts_len, flow, ofproto->max_ports);
-    if (!error) {
-        struct odputil_keybuf keybuf;
-        struct dpif_flow_stats stats;
+    struct ofpbuf key;
 
-        struct ofpbuf key;
+    struct action_xlate_ctx ctx;
+    uint64_t odp_actions_stub[1024 / 8];
+    struct ofpbuf odp_actions;
 
-        struct action_xlate_ctx ctx;
-        uint64_t odp_actions_stub[1024 / 8];
-        struct ofpbuf odp_actions;
+    ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
+    odp_flow_key_from_flow(&key, flow,
+                           ofp_port_to_odp_port(ofproto, flow->in_port));
 
-        ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
-        odp_flow_key_from_flow(&key, flow);
+    dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
 
-        dpif_flow_stats_extract(flow, packet, &stats);
+    initial_vals.vlan_tci = flow->vlan_tci;
+    initial_vals.tunnel_ip_tos = 0;
+    action_xlate_ctx_init(&ctx, ofproto, flow, &initial_vals, NULL,
+                          packet_get_tcp_flags(packet, flow), packet);
+    ctx.resubmit_stats = &stats;
 
-        action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci, NULL,
-                              packet_get_tcp_flags(packet, flow), packet);
-        ctx.resubmit_stats = &stats;
+    ofpbuf_use_stub(&odp_actions,
+                    odp_actions_stub, sizeof odp_actions_stub);
+    xlate_actions(&ctx, ofpacts, ofpacts_len, &odp_actions);
+    dpif_execute(ofproto->backer->dpif, key.data, key.size,
+                 odp_actions.data, odp_actions.size, packet);
+    ofpbuf_uninit(&odp_actions);
 
-        ofpbuf_use_stub(&odp_actions,
-                        odp_actions_stub, sizeof odp_actions_stub);
-        xlate_actions(&ctx, ofpacts, ofpacts_len, &odp_actions);
-        dpif_execute(ofproto->dpif, key.data, key.size,
-                     odp_actions.data, odp_actions.size, packet);
-        ofpbuf_uninit(&odp_actions);
-    }
-    return error;
+    return 0;
 }
 \f
 /* NetFlow. */
@@ -6478,7 +7553,7 @@ get_netflow_ids(const struct ofproto *ofproto_,
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
 
-    dpif_get_netflow_ids(ofproto->dpif, engine_type, engine_id);
+    dpif_get_netflow_ids(ofproto->backer->dpif, engine_type, engine_id);
 }
 
 static void
@@ -6542,10 +7617,10 @@ ofproto_unixctl_fdb_flush(struct unixctl_conn *conn, int argc,
             unixctl_command_reply_error(conn, "no such bridge");
             return;
         }
-        mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
+        mac_learning_flush(ofproto->ml, &ofproto->backer->revalidate_set);
     } else {
         HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
-            mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
+            mac_learning_flush(ofproto->ml, &ofproto->backer->revalidate_set);
         }
     }
 
@@ -6678,7 +7753,7 @@ ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
     struct ofproto_dpif *ofproto;
     struct ofpbuf odp_key;
     struct ofpbuf *packet;
-    ovs_be16 initial_tci;
+    struct initial_vals initial_vals;
     struct ds result;
     struct flow flow;
     char *s;
@@ -6719,14 +7794,16 @@ ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
                 goto exit;
             }
 
-            /* Convert odp_key to flow. */
-            error = ofproto_dpif_extract_flow_key(ofproto, odp_key.data,
-                                                  odp_key.size, &flow,
-                                                  &initial_tci, NULL);
-            if (error == ODP_FIT_ERROR) {
+            /* The user might have specified the wrong ofproto but within the
+             * same backer.  That's OK, ofproto_receive() can find the right
+             * one for us. */
+            if (ofproto_receive(ofproto->backer, NULL, odp_key.data,
+                                odp_key.size, &flow, NULL, &ofproto, NULL,
+                                &initial_vals)) {
                 unixctl_command_reply_error(conn, "Invalid flow");
                 goto exit;
             }
+            ds_put_format(&result, "Bridge: %s\n", ofproto->up.name);
         } else {
             char *error_s;
 
@@ -6737,8 +7814,8 @@ ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
                 goto exit;
             }
 
-            initial_tci = flow.vlan_tci;
-            vsp_adjust_flow(ofproto, &flow);
+            initial_vals.vlan_tci = flow.vlan_tci;
+            initial_vals.tunnel_ip_tos = flow.tunnel.ip_tos;
         }
 
         /* Generate a packet, if requested. */
@@ -6746,15 +7823,17 @@ ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
             packet = ofpbuf_new(0);
             flow_compose(packet, &flow);
         }
-    } else if (argc == 6) {
-        /* ofproto/trace dpname priority tun_id in_port packet */
+    } else if (argc == 7) {
+        /* ofproto/trace dpname priority tun_id in_port mark packet */
         const char *priority_s = argv[2];
         const char *tun_id_s = argv[3];
         const char *in_port_s = argv[4];
-        const char *packet_s = argv[5];
-        uint16_t in_port = ofp_port_to_odp_port(atoi(in_port_s));
+        const char *mark_s = argv[5];
+        const char *packet_s = argv[6];
+        uint32_t in_port = atoi(in_port_s);
         ovs_be64 tun_id = htonll(strtoull(tun_id_s, NULL, 0));
         uint32_t priority = atoi(priority_s);
+        uint32_t mark = atoi(mark_s);
         const char *msg;
 
         msg = eth_from_hex(packet_s, &packet);
@@ -6768,14 +7847,16 @@ ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
         ds_put_cstr(&result, s);
         free(s);
 
-        flow_extract(packet, priority, tun_id, in_port, &flow);
-        initial_tci = flow.vlan_tci;
+        flow_extract(packet, priority, mark, NULL, in_port, &flow);
+        flow.tunnel.tun_id = tun_id;
+        initial_vals.vlan_tci = flow.vlan_tci;
+        initial_vals.tunnel_ip_tos = flow.tunnel.ip_tos;
     } else {
         unixctl_command_reply_error(conn, "Bad command syntax");
         goto exit;
     }
 
-    ofproto_trace(ofproto, &flow, packet, initial_tci, &result);
+    ofproto_trace(ofproto, &flow, packet, &initial_vals, &result);
     unixctl_command_reply(conn, ds_cstr(&result));
 
 exit:
@@ -6786,8 +7867,8 @@ exit:
 
 static void
 ofproto_trace(struct ofproto_dpif *ofproto, const struct flow *flow,
-              const struct ofpbuf *packet, ovs_be16 initial_tci,
-              struct ds *ds)
+              const struct ofpbuf *packet,
+              const struct initial_vals *initial_vals, struct ds *ds)
 {
     struct rule_dpif *rule;
 
@@ -6817,7 +7898,7 @@ ofproto_trace(struct ofproto_dpif *ofproto, const struct flow *flow,
         trace.flow = *flow;
         ofpbuf_use_stub(&odp_actions,
                         odp_actions_stub, sizeof odp_actions_stub);
-        action_xlate_ctx_init(&trace.ctx, ofproto, flow, initial_tci,
+        action_xlate_ctx_init(&trace.ctx, ofproto, flow, initial_vals,
                               rule, tcp_flags, packet);
         trace.ctx.resubmit_hook = trace_resubmit;
         trace.ctx.report_hook = trace_report;
@@ -6909,7 +7990,7 @@ ofproto_dpif_self_check__(struct ofproto_dpif *ofproto, struct ds *reply)
         }
     }
     if (errors) {
-        ofproto->need_revalidate = REV_INCONSISTENCY;
+        ofproto->backer->need_revalidate = REV_INCONSISTENCY;
     }
 
     if (errors) {
@@ -6945,6 +8026,224 @@ ofproto_dpif_self_check(struct unixctl_conn *conn,
     ds_destroy(&reply);
 }
 
+/* Store the current ofprotos in 'ofproto_shash'.  Returns a sorted list
+ * of the 'ofproto_shash' nodes.  It is the responsibility of the caller
+ * to destroy 'ofproto_shash' and free the returned value. */
+static const struct shash_node **
+get_ofprotos(struct shash *ofproto_shash)
+{
+    const struct ofproto_dpif *ofproto;
+
+    HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
+        char *name = xasprintf("%s@%s", ofproto->up.type, ofproto->up.name);
+        shash_add_nocopy(ofproto_shash, name, ofproto);
+    }
+
+    return shash_sort(ofproto_shash);
+}
+
+static void
+ofproto_unixctl_dpif_dump_dps(struct unixctl_conn *conn, int argc OVS_UNUSED,
+                              const char *argv[] OVS_UNUSED,
+                              void *aux OVS_UNUSED)
+{
+    struct ds ds = DS_EMPTY_INITIALIZER;
+    struct shash ofproto_shash;
+    const struct shash_node **sorted_ofprotos;
+    int i;
+
+    shash_init(&ofproto_shash);
+    sorted_ofprotos = get_ofprotos(&ofproto_shash);
+    for (i = 0; i < shash_count(&ofproto_shash); i++) {
+        const struct shash_node *node = sorted_ofprotos[i];
+        ds_put_format(&ds, "%s\n", node->name);
+    }
+
+    shash_destroy(&ofproto_shash);
+    free(sorted_ofprotos);
+
+    unixctl_command_reply(conn, ds_cstr(&ds));
+    ds_destroy(&ds);
+}
+
+static void
+show_dp_format(const struct ofproto_dpif *ofproto, struct ds *ds)
+{
+    const struct shash_node **ports;
+    int i;
+
+    ds_put_format(ds, "%s (%s):\n", ofproto->up.name,
+                  dpif_name(ofproto->backer->dpif));
+    ds_put_format(ds,
+                  "\tlookups: hit:%"PRIu64" missed:%"PRIu64"\n",
+                  ofproto->n_hit, ofproto->n_missed);
+    ds_put_format(ds, "\tflows: %zu\n",
+                  hmap_count(&ofproto->subfacets));
+
+    ports = shash_sort(&ofproto->up.port_by_name);
+    for (i = 0; i < shash_count(&ofproto->up.port_by_name); i++) {
+        const struct shash_node *node = ports[i];
+        struct ofport *ofport = node->data;
+        const char *name = netdev_get_name(ofport->netdev);
+        const char *type = netdev_get_type(ofport->netdev);
+        uint32_t odp_port;
+
+        ds_put_format(ds, "\t%s %u/", name, ofport->ofp_port);
+
+        odp_port = ofp_port_to_odp_port(ofproto, ofport->ofp_port);
+        if (odp_port != OVSP_NONE) {
+            ds_put_format(ds, "%"PRIu32":", odp_port);
+        } else {
+            ds_put_cstr(ds, "none:");
+        }
+
+        if (strcmp(type, "system")) {
+            struct netdev *netdev;
+            int error;
+
+            ds_put_format(ds, " (%s", type);
+
+            error = netdev_open(name, type, &netdev);
+            if (!error) {
+                struct smap config;
+
+                smap_init(&config);
+                error = netdev_get_config(netdev, &config);
+                if (!error) {
+                    const struct smap_node **nodes;
+                    size_t i;
+
+                    nodes = smap_sort(&config);
+                    for (i = 0; i < smap_count(&config); i++) {
+                        const struct smap_node *node = nodes[i];
+                        ds_put_format(ds, "%c %s=%s", i ? ',' : ':',
+                                      node->key, node->value);
+                    }
+                    free(nodes);
+                }
+                smap_destroy(&config);
+
+                netdev_close(netdev);
+            }
+            ds_put_char(ds, ')');
+        }
+        ds_put_char(ds, '\n');
+    }
+    free(ports);
+}
+
+static void
+ofproto_unixctl_dpif_show(struct unixctl_conn *conn, int argc,
+                          const char *argv[], void *aux OVS_UNUSED)
+{
+    struct ds ds = DS_EMPTY_INITIALIZER;
+    const struct ofproto_dpif *ofproto;
+
+    if (argc > 1) {
+        int i;
+        for (i = 1; i < argc; i++) {
+            ofproto = ofproto_dpif_lookup(argv[i]);
+            if (!ofproto) {
+                ds_put_format(&ds, "Unknown bridge %s (use dpif/dump-dps "
+                                   "for help)", argv[i]);
+                unixctl_command_reply_error(conn, ds_cstr(&ds));
+                return;
+            }
+            show_dp_format(ofproto, &ds);
+        }
+    } else {
+        struct shash ofproto_shash;
+        const struct shash_node **sorted_ofprotos;
+        int i;
+
+        shash_init(&ofproto_shash);
+        sorted_ofprotos = get_ofprotos(&ofproto_shash);
+        for (i = 0; i < shash_count(&ofproto_shash); i++) {
+            const struct shash_node *node = sorted_ofprotos[i];
+            show_dp_format(node->data, &ds);
+        }
+
+        shash_destroy(&ofproto_shash);
+        free(sorted_ofprotos);
+    }
+
+    unixctl_command_reply(conn, ds_cstr(&ds));
+    ds_destroy(&ds);
+}
+
+static void
+ofproto_unixctl_dpif_dump_flows(struct unixctl_conn *conn,
+                                int argc OVS_UNUSED, const char *argv[],
+                                void *aux OVS_UNUSED)
+{
+    struct ds ds = DS_EMPTY_INITIALIZER;
+    const struct ofproto_dpif *ofproto;
+    struct subfacet *subfacet;
+
+    ofproto = ofproto_dpif_lookup(argv[1]);
+    if (!ofproto) {
+        unixctl_command_reply_error(conn, "no such bridge");
+        return;
+    }
+
+    update_stats(ofproto->backer);
+
+    HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->subfacets) {
+        odp_flow_key_format(subfacet->key, subfacet->key_len, &ds);
+
+        ds_put_format(&ds, ", packets:%"PRIu64", bytes:%"PRIu64", used:",
+                      subfacet->dp_packet_count, subfacet->dp_byte_count);
+        if (subfacet->used) {
+            ds_put_format(&ds, "%.3fs",
+                          (time_msec() - subfacet->used) / 1000.0);
+        } else {
+            ds_put_format(&ds, "never");
+        }
+        if (subfacet->facet->tcp_flags) {
+            ds_put_cstr(&ds, ", flags:");
+            packet_format_tcp_flags(&ds, subfacet->facet->tcp_flags);
+        }
+
+        ds_put_cstr(&ds, ", actions:");
+        if (subfacet->slow) {
+            uint64_t slow_path_stub[128 / 8];
+            const struct nlattr *actions;
+            size_t actions_len;
+
+            compose_slow_path(ofproto, &subfacet->facet->flow, subfacet->slow,
+                              slow_path_stub, sizeof slow_path_stub,
+                              &actions, &actions_len);
+            format_odp_actions(&ds, actions, actions_len);
+        } else {
+            format_odp_actions(&ds, subfacet->actions, subfacet->actions_len);
+        }
+        ds_put_char(&ds, '\n');
+    }
+
+    unixctl_command_reply(conn, ds_cstr(&ds));
+    ds_destroy(&ds);
+}
+
+static void
+ofproto_unixctl_dpif_del_flows(struct unixctl_conn *conn,
+                               int argc OVS_UNUSED, const char *argv[],
+                               void *aux OVS_UNUSED)
+{
+    struct ds ds = DS_EMPTY_INITIALIZER;
+    struct ofproto_dpif *ofproto;
+
+    ofproto = ofproto_dpif_lookup(argv[1]);
+    if (!ofproto) {
+        unixctl_command_reply_error(conn, "no such bridge");
+        return;
+    }
+
+    flush(&ofproto->up);
+
+    unixctl_command_reply(conn, ds_cstr(&ds));
+    ds_destroy(&ds);
+}
+
 static void
 ofproto_dpif_unixctl_init(void)
 {
@@ -6956,8 +8255,8 @@ ofproto_dpif_unixctl_init(void)
 
     unixctl_command_register(
         "ofproto/trace",
-        "bridge {tun_id in_port packet | odp_flow [-generate]}",
-        2, 5, ofproto_unixctl_trace, NULL);
+        "bridge {priority tun_id in_port mark packet | odp_flow [-generate]}",
+        2, 6, ofproto_unixctl_trace, NULL);
     unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
                              ofproto_unixctl_fdb_flush, NULL);
     unixctl_command_register("fdb/show", "bridge", 1, 1,
@@ -6968,6 +8267,14 @@ ofproto_dpif_unixctl_init(void)
                              ofproto_dpif_unclog, NULL);
     unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
                              ofproto_dpif_self_check, NULL);
+    unixctl_command_register("dpif/dump-dps", "", 0, 0,
+                             ofproto_unixctl_dpif_dump_dps, NULL);
+    unixctl_command_register("dpif/show", "[bridge]", 0, INT_MAX,
+                             ofproto_unixctl_dpif_show, NULL);
+    unixctl_command_register("dpif/dump-flows", "bridge", 1, 1,
+                             ofproto_unixctl_dpif_dump_flows, NULL);
+    unixctl_command_register("dpif/del-flows", "bridge", 1, 1,
+                             ofproto_unixctl_dpif_del_flows, NULL);
 }
 \f
 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
@@ -6988,7 +8295,7 @@ set_realdev(struct ofport *ofport_, uint16_t realdev_ofp_port, int vid)
         return 0;
     }
 
-    ofproto->need_revalidate = REV_RECONFIGURE;
+    ofproto->backer->need_revalidate = REV_RECONFIGURE;
 
     if (ofport->realdev_ofp_port) {
         vsp_remove(ofport);
@@ -7027,16 +8334,17 @@ vsp_realdev_to_vlandev(const struct ofproto_dpif *ofproto,
                        uint32_t realdev_odp_port, ovs_be16 vlan_tci)
 {
     if (!hmap_is_empty(&ofproto->realdev_vid_map)) {
-        uint16_t realdev_ofp_port = odp_port_to_ofp_port(realdev_odp_port);
+        uint16_t realdev_ofp_port;
         int vid = vlan_tci_to_vid(vlan_tci);
         const struct vlan_splinter *vsp;
 
+        realdev_ofp_port = odp_port_to_ofp_port(ofproto, realdev_odp_port);
         HMAP_FOR_EACH_WITH_HASH (vsp, realdev_vid_node,
                                  hash_realdev_vid(realdev_ofp_port, vid),
                                  &ofproto->realdev_vid_map) {
             if (vsp->realdev_ofp_port == realdev_ofp_port
                 && vsp->vid == vid) {
-                return ofp_port_to_odp_port(vsp->vlandev_ofp_port);
+                return ofp_port_to_odp_port(ofproto, vsp->vlandev_ofp_port);
             }
         }
     }
@@ -7151,11 +8459,58 @@ vsp_add(struct ofport_dpif *port, uint16_t realdev_ofp_port, int vid)
         VLOG_ERR("duplicate vlan device record");
     }
 }
-\f
+
+static uint32_t
+ofp_port_to_odp_port(const struct ofproto_dpif *ofproto, uint16_t ofp_port)
+{
+    const struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
+    return ofport ? ofport->odp_port : OVSP_NONE;
+}
+
+static struct ofport_dpif *
+odp_port_to_ofport(const struct dpif_backer *backer, uint32_t odp_port)
+{
+    struct ofport_dpif *port;
+
+    HMAP_FOR_EACH_IN_BUCKET (port, odp_port_node,
+                             hash_int(odp_port, 0),
+                             &backer->odp_to_ofport_map) {
+        if (port->odp_port == odp_port) {
+            return port;
+        }
+    }
+
+    return NULL;
+}
+
+static uint16_t
+odp_port_to_ofp_port(const struct ofproto_dpif *ofproto, uint32_t odp_port)
+{
+    struct ofport_dpif *port;
+
+    port = odp_port_to_ofport(ofproto->backer, odp_port);
+    if (port && &ofproto->up == port->up.ofproto) {
+        return port->up.ofp_port;
+    } else {
+        return OFPP_NONE;
+    }
+}
+
+static void
+dpif_stats_update_hit_count(struct ofproto_dpif *ofproto, uint64_t delta)
+{
+    ofproto->n_hit += delta;
+}
+
 const struct ofproto_class ofproto_dpif_class = {
+    init,
     enumerate_types,
     enumerate_names,
     del,
+    port_open_type,
+    type_run,
+    type_run_fast,
+    type_wait,
     alloc,
     construct,
     destruct,
@@ -7197,10 +8552,7 @@ const struct ofproto_class ofproto_dpif_class = {
     get_netflow_ids,
     set_sflow,
     set_cfm,
-    get_cfm_fault,
-    get_cfm_opup,
-    get_cfm_remote_mpids,
-    get_cfm_health,
+    get_cfm_status,
     set_stp,
     get_stp_status,
     set_stp_port,
@@ -7213,6 +8565,6 @@ const struct ofproto_class ofproto_dpif_class = {
     set_flood_vlans,
     is_mirror_output_bundle,
     forward_bpdu_changed,
-    set_mac_idle_time,
+    set_mac_table_config,
     set_realdev,
 };