ofproto-dpif-governor: Dispense with governor name.
[sliver-openvswitch.git] / ofproto / ofproto-dpif.c
index ffd2399..d5cfc16 100644 (file)
@@ -41,6 +41,7 @@
 #include "netlink.h"
 #include "nx-match.h"
 #include "odp-util.h"
+#include "odp-execute.h"
 #include "ofp-util.h"
 #include "ofpbuf.h"
 #include "ofp-actions.h"
@@ -386,6 +387,7 @@ struct subfacet {
     struct hmap_node hmap_node; /* In struct ofproto_dpif 'subfacets' list. */
     struct list list_node;      /* In struct facet's 'facets' list. */
     struct facet *facet;        /* Owning facet. */
+    struct dpif_backer *backer; /* Owning backer. */
 
     enum odp_key_fitness key_fitness;
     struct nlattr *key;
@@ -404,12 +406,12 @@ struct subfacet {
 
 static struct subfacet *subfacet_create(struct facet *, struct flow_miss *miss,
                                         long long int now);
-static struct subfacet *subfacet_find(struct ofproto_dpif *,
+static struct subfacet *subfacet_find(struct dpif_backer *,
                                       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_destroy_batch(struct ofproto_dpif *,
+static void subfacet_destroy_batch(struct dpif_backer *,
                                    struct subfacet **, int n);
 static void subfacet_reset_dp_stats(struct subfacet *,
                                     struct dpif_flow_stats *);
@@ -563,8 +565,9 @@ struct vlan_splinter {
     int vid;
 };
 
-static uint32_t vsp_realdev_to_vlandev(const struct ofproto_dpif *,
-                                       uint32_t realdev, ovs_be16 vlan_tci);
+static uint16_t vsp_realdev_to_vlandev(const struct ofproto_dpif *,
+                                       uint16_t realdev_ofp_port,
+                                       ovs_be16 vlan_tci);
 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);
@@ -634,6 +637,11 @@ struct drop_key {
     size_t key_len;
 };
 
+struct avg_subfacet_rates {
+    double add_rate;   /* Moving average of new flows created per minute. */
+    double del_rate;   /* Moving average of flows deleted per minute. */
+};
+
 /* All datapaths of a given type share a single dpif backer instance. */
 struct dpif_backer {
     char *type;
@@ -649,6 +657,36 @@ struct dpif_backer {
     struct tag_set revalidate_set; /* Revalidate only matching facets. */
 
     struct hmap drop_keys; /* Set of dropped odp keys. */
+    bool recv_set_enable; /* Enables or disables receiving packets. */
+
+    struct hmap subfacets;
+    struct governor *governor;
+
+    /* Subfacet statistics.
+     *
+     * These keep track of the total number of subfacets added and deleted and
+     * flow life span.  They are useful for computing the flow rates stats
+     * exposed via "ovs-appctl dpif/show".  The goal is to learn about
+     * traffic patterns in ways that we can use later to improve Open vSwitch
+     * performance in new situations.  */
+    long long int created;           /* Time when it is created. */
+    unsigned max_n_subfacet;         /* Maximum number of flows */
+    unsigned avg_n_subfacet;         /* Average number of flows. */
+    long long int avg_subfacet_life; /* Average life span of subfacets. */
+
+    /* The average number of subfacets... */
+    struct avg_subfacet_rates hourly;   /* ...over the last hour. */
+    struct avg_subfacet_rates daily;    /* ...over the last day. */
+    struct avg_subfacet_rates lifetime; /* ...over the switch lifetime. */
+    long long int last_minute;          /* Last time 'hourly' was updated. */
+
+    /* Number of subfacets added or deleted since 'last_minute'. */
+    unsigned subfacet_add_count;
+    unsigned subfacet_del_count;
+
+    /* Number of subfacets added or deleted from 'created' to 'last_minute.' */
+    unsigned long long int total_subfacet_add_count;
+    unsigned long long int total_subfacet_del_count;
 };
 
 /* All existing ofproto_backer instances, indexed by ofproto->up.type. */
@@ -657,16 +695,7 @@ 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 avg_subfacet_rates {
-    double add_rate;     /* Moving average of new flows created per minute. */
-    double del_rate;     /* Moving average of flows deleted per minute. */
-};
-static void show_dp_rates(struct ds *ds, const char *heading,
-                          const struct avg_subfacet_rates *rates);
-static void exp_mavg(double *avg, int base, double new);
+static void update_moving_averages(struct dpif_backer *backer);
 
 struct ofproto_dpif {
     struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
@@ -676,6 +705,7 @@ struct ofproto_dpif {
     /* Special OpenFlow rules. */
     struct rule_dpif *miss_rule; /* Sends flow table misses to controller. */
     struct rule_dpif *no_packet_in_rule; /* Drops flow table misses. */
+    struct rule_dpif *drop_frags_rule; /* Used in OFPC_FRAG_DROP mode. */
 
     /* Bridging. */
     struct netflow *netflow;
@@ -689,8 +719,6 @@ struct ofproto_dpif {
 
     /* Facets. */
     struct hmap facets;
-    struct hmap subfacets;
-    struct governor *governor;
     long long int consistency_rl;
 
     /* Revalidation. */
@@ -720,48 +748,7 @@ struct ofproto_dpif {
     /* Per ofproto's dpif stats. */
     uint64_t n_hit;
     uint64_t n_missed;
-
-    /* Subfacet statistics.
-     *
-     * These keep track of the total number of subfacets added and deleted and
-     * flow life span.  They are useful for computing the flow rates stats
-     * exposed via "ovs-appctl dpif/show".  The goal is to learn about
-     * traffic patterns in ways that we can use later to improve Open vSwitch
-     * performance in new situations.  */
-    long long int created;         /* Time when it is created. */
-    unsigned int max_n_subfacet;   /* Maximum number of flows */
-
-    /* The average number of subfacets... */
-    struct avg_subfacet_rates hourly; /* ...over the last hour. */
-    struct avg_subfacet_rates daily;  /* ...over the last day. */
-    long long int last_minute;        /* Last time 'hourly' was updated. */
-
-    /* Number of subfacets added or deleted since 'last_minute'. */
-    unsigned int subfacet_add_count;
-    unsigned int subfacet_del_count;
-
-    /* Number of subfacets added or deleted from 'created' to 'last_minute.' */
-    unsigned long long int total_subfacet_add_count;
-    unsigned long long int total_subfacet_del_count;
-
-    /* Sum of the number of milliseconds that each subfacet existed,
-     * over the subfacets that have been added and then later deleted. */
-    unsigned long long int total_subfacet_life_span;
-
-    /* Incremented by the number of currently existing subfacets, each
-     * time we pull statistics from the kernel. */
-    unsigned long long int total_subfacet_count;
-
-    /* Number of times we pull statistics from the kernel. */
-    unsigned long long int n_update_stats;
 };
-static unsigned long long int avg_subfacet_life_span(
-                                        const struct ofproto_dpif *);
-static double avg_subfacet_count(const struct ofproto_dpif *ofproto);
-static void update_moving_averages(struct ofproto_dpif *ofproto);
-static void dpif_stats_update_hit_count(struct ofproto_dpif *ofproto,
-                                        uint64_t delta);
-static void update_max_subfacet_count(struct ofproto_dpif *ofproto);
 
 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"?  (Useful only
  * for debugging the asynchronous flow_mod implementation.) */
@@ -922,6 +909,21 @@ type_run(const char *type)
         push_all_stats();
     }
 
+    /* If vswitchd started with other_config:flow_restore_wait set as "true",
+     * and the configuration has now changed to "false", enable receiving
+     * packets from the datapath. */
+    if (!backer->recv_set_enable && !ofproto_get_flow_restore_wait()) {
+        backer->recv_set_enable = true;
+
+        error = dpif_recv_set(backer->dpif, backer->recv_set_enable);
+        if (error) {
+            VLOG_ERR("Failed to enable receiving packets in dpif.");
+            return error;
+        }
+        dpif_flow_flush(backer->dpif);
+        backer->need_revalidate = REV_RECONFIGURE;
+    }
+
     if (backer->need_revalidate
         || !tag_set_is_empty(&backer->revalidate_set)) {
         struct tag_set revalidate_set = backer->revalidate_set;
@@ -942,13 +944,15 @@ type_run(const char *type)
             }
 
             HMAP_FOR_EACH (iter, up.hmap_node, &ofproto->up.ports) {
+                char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
                 const char *dp_port;
 
                 if (!iter->tnl_port) {
                     continue;
                 }
 
-                dp_port = netdev_vport_get_dpif_port(iter->up.netdev);
+                dp_port = netdev_vport_get_dpif_port(iter->up.netdev,
+                                                     namebuf, sizeof namebuf);
                 node = simap_find(&tmp_backers, dp_port);
                 if (node) {
                     simap_put(&backer->tnl_backers, dp_port, node->data);
@@ -1015,7 +1019,10 @@ type_run(const char *type)
         }
     }
 
-    if (timer_expired(&backer->next_expiration)) {
+    if (!backer->recv_set_enable) {
+        /* Wake up before a max of 1000ms. */
+        timer_set_duration(&backer->next_expiration, 1000);
+    } else if (timer_expired(&backer->next_expiration)) {
         int delay = expire(backer);
         timer_set_duration(&backer->next_expiration, delay);
     }
@@ -1073,6 +1080,24 @@ type_run(const char *type)
         }
     }
 
+    if (backer->governor) {
+        size_t n_subfacets;
+
+        governor_run(backer->governor);
+
+        /* If the governor has shrunk to its minimum size and the number of
+         * subfacets has dwindled, then drop the governor entirely.
+         *
+         * For hysteresis, the number of subfacets to drop the governor is
+         * smaller than the number needed to trigger its creation. */
+        n_subfacets = hmap_count(&backer->subfacets);
+        if (n_subfacets * 4 < flow_eviction_threshold
+            && governor_is_idle(backer->governor)) {
+            governor_destroy(backer->governor);
+            backer->governor = NULL;
+        }
+    }
+
     return 0;
 }
 
@@ -1081,6 +1106,11 @@ dpif_backer_run_fast(struct dpif_backer *backer, int max_batch)
 {
     unsigned int work;
 
+    /* If recv_set_enable is false, we should not handle upcalls. */
+    if (!backer->recv_set_enable) {
+        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.
      *
@@ -1166,6 +1196,10 @@ type_wait(const char *type)
         return;
     }
 
+    if (backer->governor) {
+        governor_wait(backer->governor);
+    }
+
     timer_wait(&backer->next_expiration);
 }
 \f
@@ -1208,6 +1242,10 @@ close_dpif_backer(struct dpif_backer *backer)
     shash_delete(&all_dpif_backers, node);
     dpif_close(backer->dpif);
 
+    ovs_assert(hmap_is_empty(&backer->subfacets));
+    hmap_destroy(&backer->subfacets);
+    governor_destroy(backer->governor);
+
     free(backer);
 }
 
@@ -1273,16 +1311,21 @@ open_dpif_backer(const char *type, struct dpif_backer **backerp)
     }
 
     backer->type = xstrdup(type);
+    backer->governor = NULL;
     backer->refcount = 1;
     hmap_init(&backer->odp_to_ofport_map);
     hmap_init(&backer->drop_keys);
+    hmap_init(&backer->subfacets);
     timer_set_duration(&backer->next_expiration, 1000);
     backer->need_revalidate = 0;
     simap_init(&backer->tnl_backers);
     tag_set_init(&backer->revalidate_set);
+    backer->recv_set_enable = !ofproto_get_flow_restore_wait();
     *backerp = backer;
 
-    dpif_flow_flush(backer->dpif);
+    if (backer->recv_set_enable) {
+        dpif_flow_flush(backer->dpif);
+    }
 
     /* Loop through the ports already on the datapath and remove any
      * that we don't need anymore. */
@@ -1306,7 +1349,7 @@ open_dpif_backer(const char *type, struct dpif_backer **backerp)
 
     shash_add(&all_dpif_backers, type, backer);
 
-    error = dpif_recv_set(backer->dpif, true);
+    error = dpif_recv_set(backer->dpif, backer->recv_set_enable);
     if (error) {
         VLOG_ERR("failed to listen on datapath of type %s: %s",
                  type, strerror(error));
@@ -1314,6 +1357,19 @@ open_dpif_backer(const char *type, struct dpif_backer **backerp)
         return error;
     }
 
+    backer->max_n_subfacet = 0;
+    backer->created = time_msec();
+    backer->last_minute = backer->created;
+    memset(&backer->hourly, 0, sizeof backer->hourly);
+    memset(&backer->daily, 0, sizeof backer->daily);
+    memset(&backer->lifetime, 0, sizeof backer->lifetime);
+    backer->subfacet_add_count = 0;
+    backer->subfacet_del_count = 0;
+    backer->total_subfacet_add_count = 0;
+    backer->total_subfacet_del_count = 0;
+    backer->avg_n_subfacet = 0;
+    backer->avg_subfacet_life = 0;
+
     return error;
 }
 
@@ -1346,8 +1402,6 @@ construct(struct ofproto *ofproto_)
     ofproto->has_bonded_bundles = false;
 
     hmap_init(&ofproto->facets);
-    hmap_init(&ofproto->subfacets);
-    ofproto->governor = NULL;
     ofproto->consistency_rl = LLONG_MIN;
 
     for (i = 0; i < N_TABLES; i++) {
@@ -1400,19 +1454,6 @@ construct(struct ofproto *ofproto_)
     ofproto->n_hit = 0;
     ofproto->n_missed = 0;
 
-    ofproto->max_n_subfacet = 0;
-    ofproto->created = time_msec();
-    ofproto->last_minute = ofproto->created;
-    memset(&ofproto->hourly, 0, sizeof ofproto->hourly);
-    memset(&ofproto->daily, 0, sizeof ofproto->daily);
-    ofproto->subfacet_add_count = 0;
-    ofproto->subfacet_del_count = 0;
-    ofproto->total_subfacet_add_count = 0;
-    ofproto->total_subfacet_del_count = 0;
-    ofproto->total_subfacet_life_span = 0;
-    ofproto->total_subfacet_count = 0;
-    ofproto->n_update_stats = 0;
-
     return error;
 }
 
@@ -1478,6 +1519,12 @@ add_internal_flows(struct ofproto_dpif *ofproto)
     ofpbuf_clear(&ofpacts);
     error = add_internal_flow(ofproto, id++, &ofpacts,
                               &ofproto->no_packet_in_rule);
+    if (error) {
+        return error;
+    }
+
+    error = add_internal_flow(ofproto, id++, &ofpacts,
+                              &ofproto->drop_frags_rule);
     return error;
 }
 
@@ -1523,8 +1570,6 @@ destruct(struct ofproto *ofproto_)
     mac_learning_destroy(ofproto->ml);
 
     hmap_destroy(&ofproto->facets);
-    hmap_destroy(&ofproto->subfacets);
-    governor_destroy(ofproto->governor);
 
     hmap_destroy(&ofproto->vlandev_map);
     hmap_destroy(&ofproto->realdev_vid_map);
@@ -1542,6 +1587,12 @@ run_fast(struct ofproto *ofproto_)
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
     struct ofport_dpif *ofport;
 
+    /* Do not perform any periodic activity required by 'ofproto' while
+     * waiting for flow restore to complete. */
+    if (ofproto_get_flow_restore_wait()) {
+        return 0;
+    }
+
     HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
         port_run_fast(ofport);
     }
@@ -1561,6 +1612,12 @@ run(struct ofproto *ofproto_)
         complete_operations(ofproto);
     }
 
+    /* Do not perform any periodic activity below required by 'ofproto' while
+     * waiting for flow restore to complete. */
+    if (ofproto_get_flow_restore_wait()) {
+        return 0;
+    }
+
     error = run_fast(ofproto_);
     if (error) {
         return error;
@@ -1603,24 +1660,6 @@ run(struct ofproto *ofproto_)
         }
     }
 
-    if (ofproto->governor) {
-        size_t n_subfacets;
-
-        governor_run(ofproto->governor);
-
-        /* If the governor has shrunk to its minimum size and the number of
-         * subfacets has dwindled, then drop the governor entirely.
-         *
-         * For hysteresis, the number of subfacets to drop the governor is
-         * smaller than the number needed to trigger its creation. */
-        n_subfacets = hmap_count(&ofproto->subfacets);
-        if (n_subfacets * 4 < ofproto->up.flow_eviction_threshold
-            && governor_is_idle(ofproto->governor)) {
-            governor_destroy(ofproto->governor);
-            ofproto->governor = NULL;
-        }
-    }
-
     return 0;
 }
 
@@ -1635,6 +1674,10 @@ wait(struct ofproto *ofproto_)
         poll_immediate_wake();
     }
 
+    if (ofproto_get_flow_restore_wait()) {
+        return;
+    }
+
     dpif_wait(ofproto->backer->dpif);
     dpif_recv_wait(ofproto->backer->dpif);
     if (ofproto->sflow) {
@@ -1659,18 +1702,20 @@ wait(struct ofproto *ofproto_)
         VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
         poll_immediate_wake();
     }
-    if (ofproto->governor) {
-        governor_wait(ofproto->governor);
-    }
 }
 
 static void
 get_memory_usage(const struct ofproto *ofproto_, struct simap *usage)
 {
     const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+    size_t n_subfacets = 0;
+    struct facet *facet;
 
     simap_increase(usage, "facets", hmap_count(&ofproto->facets));
-    simap_increase(usage, "subfacets", hmap_count(&ofproto->subfacets));
+    HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
+        n_subfacets += list_size(&facet->subfacets);
+    }
+    simap_increase(usage, "subfacets", n_subfacets);
 }
 
 static void
@@ -1683,11 +1728,15 @@ flush(struct ofproto *ofproto_)
 
     n_batch = 0;
     HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
-                        &ofproto->subfacets) {
+                        &ofproto->backer->subfacets) {
+        if (ofproto_dpif_cast(subfacet->facet->rule->up.ofproto) != ofproto) {
+            continue;
+        }
+
         if (subfacet->path != SF_NOT_INSTALLED) {
             batch[n_batch++] = subfacet;
             if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
-                subfacet_destroy_batch(ofproto, batch, n_batch);
+                subfacet_destroy_batch(ofproto->backer, batch, n_batch);
                 n_batch = 0;
             }
         } else {
@@ -1696,7 +1745,7 @@ flush(struct ofproto *ofproto_)
     }
 
     if (n_batch > 0) {
-        subfacet_destroy_batch(ofproto, batch, n_batch);
+        subfacet_destroy_batch(ofproto->backer, batch, n_batch);
     }
 }
 
@@ -1724,7 +1773,7 @@ get_tables(struct ofproto *ofproto_, struct ofp12_table_stats *ots)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
     struct dpif_dp_stats s;
-    uint64_t n_miss, n_no_pkt_in, n_bytes;
+    uint64_t n_miss, n_no_pkt_in, n_bytes, n_dropped_frags;
     uint64_t n_lookup;
 
     strcpy(ots->name, "classifier");
@@ -1732,8 +1781,9 @@ get_tables(struct ofproto *ofproto_, struct ofp12_table_stats *ots)
     dpif_get_dp_stats(ofproto->backer->dpif, &s);
     rule_get_stats(&ofproto->miss_rule->up, &n_miss, &n_bytes);
     rule_get_stats(&ofproto->no_packet_in_rule->up, &n_no_pkt_in, &n_bytes);
+    rule_get_stats(&ofproto->drop_frags_rule->up, &n_dropped_frags, &n_bytes);
 
-    n_lookup = s.n_hit + s.n_missed;
+    n_lookup = s.n_hit + s.n_missed - n_dropped_frags;
     ots->lookup_count = htonll(n_lookup);
     ots->matched_count = htonll(n_lookup - n_miss - n_no_pkt_in);
 }
@@ -1758,6 +1808,7 @@ 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;
+    char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
     struct dpif_port dpif_port;
     int error;
 
@@ -1786,7 +1837,8 @@ port_construct(struct ofport *port_)
     }
 
     error = dpif_port_query_by_name(ofproto->backer->dpif,
-                                    netdev_vport_get_dpif_port(netdev),
+                                    netdev_vport_get_dpif_port(netdev, namebuf,
+                                                               sizeof namebuf),
                                     &dpif_port);
     if (error) {
         return error;
@@ -1823,9 +1875,12 @@ 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);
+    char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
+    const char *dp_port_name;
 
+    dp_port_name = netdev_vport_get_dpif_port(port->up.netdev, namebuf,
+                                              sizeof namebuf);
     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
@@ -1864,6 +1919,10 @@ port_modified(struct ofport *port_)
     if (port->bundle && port->bundle->bond) {
         bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev);
     }
+
+    if (port->cfm) {
+        cfm_set_netdev(port->cfm, port->up.netdev);
+    }
 }
 
 static void
@@ -3265,14 +3324,16 @@ static int
 port_add(struct ofproto *ofproto_, struct netdev *netdev)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
-    const char *dp_port_name = netdev_vport_get_dpif_port(netdev);
     const char *devname = netdev_get_name(netdev);
+    char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
+    const char *dp_port_name;
 
     if (netdev_vport_is_patch(netdev)) {
         sset_add(&ofproto->ghost_ports, netdev_get_name(netdev));
         return 0;
     }
 
+    dp_port_name = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf);
     if (!dpif_port_exists(ofproto->backer->dpif, dp_port_name)) {
         uint32_t port_no = UINT32_MAX;
         int error;
@@ -3621,21 +3682,22 @@ handle_flow_miss_common(struct rule_dpif *rule,
  * the benefits, so when the datapath holds a large number of flows we impose
  * some heuristics to decide which flows are likely to be worth tracking. */
 static bool
-flow_miss_should_make_facet(struct ofproto_dpif *ofproto,
-                            struct flow_miss *miss, uint32_t hash)
+flow_miss_should_make_facet(struct flow_miss *miss, uint32_t hash)
 {
-    if (!ofproto->governor) {
+    struct dpif_backer *backer = miss->ofproto->backer;
+
+    if (!backer->governor) {
         size_t n_subfacets;
 
-        n_subfacets = hmap_count(&ofproto->subfacets);
-        if (n_subfacets * 2 <= ofproto->up.flow_eviction_threshold) {
+        n_subfacets = hmap_count(&backer->subfacets);
+        if (n_subfacets * 2 <= flow_eviction_threshold) {
             return true;
         }
 
-        ofproto->governor = governor_create(ofproto->up.name);
+        backer->governor = governor_create();
     }
 
-    return governor_should_install_flow(ofproto->governor, hash,
+    return governor_should_install_flow(backer->governor, hash,
                                         list_size(&miss->packets));
 }
 
@@ -3775,9 +3837,9 @@ handle_flow_miss(struct flow_miss *miss, struct flow_miss_op *ops,
          * flow keys with fitness ODP_FIT_TO_LITTLE.  This breaks a fundamental
          * assumption used throughout the facet and subfacet handling code.
          * Since we have to handle these misses in userspace anyway, we simply
-         * skip facet creation, avoiding the problem alltogether. */
+         * skip facet creation, avoiding the problem altogether. */
         if (miss->key_fitness == ODP_FIT_TOO_LITTLE
-            || !flow_miss_should_make_facet(ofproto, miss, hash)) {
+            || !flow_miss_should_make_facet(miss, hash)) {
             handle_flow_miss_without_facet(miss, ops, n_ops);
             return;
         }
@@ -3974,14 +4036,14 @@ handle_miss_upcalls(struct dpif_backer *backer, struct dpif_upcall *upcalls,
         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
+            /* Received packet on datapath 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);
+            VLOG_INFO_RL(&rl, "received packet on unassociated datapath port "
+                              "%"PRIu32, odp_in_port);
 
             drop_key = drop_key_lookup(backer, upcall->key, upcall->key_len);
             if (!drop_key) {
@@ -4228,10 +4290,10 @@ handle_upcalls(struct dpif_backer *backer, unsigned int max_batch)
 \f
 /* Flow expiration. */
 
-static int subfacet_max_idle(const struct ofproto_dpif *);
+static int subfacet_max_idle(const struct dpif_backer *);
 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);
+static void expire_subfacets(struct dpif_backer *, int dp_max_idle);
 
 /* This function is called periodically by run().  Its job is to collect
  * updates for the flows that have been installed into the datapath, most
@@ -4243,7 +4305,8 @@ static int
 expire(struct dpif_backer *backer)
 {
     struct ofproto_dpif *ofproto;
-    int max_idle = INT32_MAX;
+    size_t n_subfacets;
+    int max_idle;
 
     /* Periodically clear out the drop keys in an effort to keep them
      * relatively few. */
@@ -4252,23 +4315,35 @@ expire(struct dpif_backer *backer)
     /* Update stats for each flow in the backer. */
     update_stats(backer);
 
+    n_subfacets = hmap_count(&backer->subfacets);
+    if (n_subfacets) {
+        struct subfacet *subfacet;
+        long long int total, now;
+
+        total = 0;
+        now = time_msec();
+        HMAP_FOR_EACH (subfacet, hmap_node, &backer->subfacets) {
+            total += now - subfacet->created;
+        }
+        backer->avg_subfacet_life += total / n_subfacets;
+    }
+    backer->avg_subfacet_life /= 2;
+
+    backer->avg_n_subfacet += n_subfacets;
+    backer->avg_n_subfacet /= 2;
+
+    backer->max_n_subfacet = MAX(backer->max_n_subfacet, n_subfacets);
+
+    max_idle = subfacet_max_idle(backer);
+    expire_subfacets(backer, max_idle);
+
     HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
         struct rule *rule, *next_rule;
-        int dp_max_idle;
 
         if (ofproto->backer != backer) {
             continue;
         }
 
-        /* Keep track of the max number of flows per ofproto_dpif. */
-        update_max_subfacet_count(ofproto);
-
-        /* Expire subfacets that have been idle too long. */
-        dp_max_idle = subfacet_max_idle(ofproto);
-        expire_subfacets(ofproto, dp_max_idle);
-
-        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,
@@ -4299,6 +4374,7 @@ update_subfacet_stats(struct subfacet *subfacet,
                       const struct dpif_flow_stats *stats)
 {
     struct facet *facet = subfacet->facet;
+    struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
     struct dpif_flow_stats diff;
 
     diff.tcp_flags = stats->tcp_flags;
@@ -4318,6 +4394,7 @@ update_subfacet_stats(struct subfacet *subfacet,
         diff.n_bytes = 0;
     }
 
+    ofproto->n_hit += diff.n_packets;
     subfacet->dp_packet_count = stats->n_packets;
     subfacet->dp_byte_count = stats->n_bytes;
     subfacet_update_stats(subfacet, &diff);
@@ -4332,7 +4409,7 @@ 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 ofproto_dpif *ofproto,
+delete_unexpected_flow(struct dpif_backer *backer,
                        const struct nlattr *key, size_t key_len)
 {
     if (!VLOG_DROP_WARN(&rl)) {
@@ -4340,12 +4417,12 @@ delete_unexpected_flow(struct ofproto_dpif *ofproto,
 
         ds_init(&s);
         odp_flow_key_format(key, key_len, &s);
-        VLOG_WARN("unexpected flow on %s: %s", ofproto->up.name, ds_cstr(&s));
+        VLOG_WARN("unexpected flow: %s", ds_cstr(&s));
         ds_destroy(&s);
     }
 
     COVERAGE_INC(facet_unexpected);
-    dpif_flow_del(ofproto->backer->dpif, key, key_len, NULL);
+    dpif_flow_del(backer->dpif, key, key_len, NULL);
 }
 
 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
@@ -4370,33 +4447,17 @@ update_stats(struct dpif_backer *backer)
     const struct dpif_flow_stats *stats;
     struct dpif_flow_dump dump;
     const struct nlattr *key;
-    struct ofproto_dpif *ofproto;
     size_t key_len;
 
     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;
         uint32_t key_hash;
 
-        if (ofproto_receive(backer, NULL, key, key_len, &flow, NULL, &ofproto,
-                            NULL, NULL)) {
-            continue;
-        }
-
-        ofproto->total_subfacet_count += hmap_count(&ofproto->subfacets);
-        ofproto->n_update_stats++;
-
         key_hash = odp_flow_key_hash(key, key_len);
-        subfacet = subfacet_find(ofproto, key, key_len, key_hash);
+        subfacet = subfacet_find(backer, 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;
 
@@ -4406,17 +4467,14 @@ update_stats(struct dpif_backer *backer)
 
         case SF_NOT_INSTALLED:
         default:
-            delete_unexpected_flow(ofproto, key, key_len);
+            delete_unexpected_flow(backer, key, key_len);
             break;
         }
         run_fast_rl();
     }
     dpif_flow_dump_done(&dump);
 
-    HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
-        update_moving_averages(ofproto);
-    }
-
+    update_moving_averages(backer);
 }
 
 /* Calculates and returns the number of milliseconds of idle time after which
@@ -4424,7 +4482,7 @@ update_stats(struct dpif_backer *backer)
  * its statistics into its facet, and when a facet's last subfacet expires, we
  * fold its statistic into its rule. */
 static int
-subfacet_max_idle(const struct ofproto_dpif *ofproto)
+subfacet_max_idle(const struct dpif_backer *backer)
 {
     /*
      * Idle time histogram.
@@ -4447,7 +4505,7 @@ subfacet_max_idle(const struct ofproto_dpif *ofproto)
      * that is installed in the kernel gets dropped in the appropriate bucket.
      * After the histogram has been built, we compute the cutoff so that only
      * the most-recently-used 1% of subfacets (but at least
-     * ofproto->up.flow_eviction_threshold flows) are kept cached.  At least
+     * flow_eviction_threshold flows) are kept cached.  At least
      * the most-recently-used bucket of subfacets is kept, so actually an
      * arbitrary number of subfacets can be kept in any given expiration run
      * (though the next run will delete most of those unless they receive
@@ -4465,14 +4523,14 @@ subfacet_max_idle(const struct ofproto_dpif *ofproto)
     long long int now;
     int i;
 
-    total = hmap_count(&ofproto->subfacets);
-    if (total <= ofproto->up.flow_eviction_threshold) {
+    total = hmap_count(&backer->subfacets);
+    if (total <= flow_eviction_threshold) {
         return N_BUCKETS * BUCKET_WIDTH;
     }
 
     /* Build histogram. */
     now = time_msec();
-    HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->subfacets) {
+    HMAP_FOR_EACH (subfacet, hmap_node, &backer->subfacets) {
         long long int idle = now - subfacet->used;
         int bucket = (idle <= 0 ? 0
                       : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
@@ -4485,7 +4543,7 @@ subfacet_max_idle(const struct ofproto_dpif *ofproto)
     do {
         subtotal += buckets[bucket++];
     } while (bucket < N_BUCKETS &&
-             subtotal < MAX(ofproto->up.flow_eviction_threshold, total / 100));
+             subtotal < MAX(flow_eviction_threshold, total / 100));
 
     if (VLOG_IS_DBG_ENABLED()) {
         struct ds s;
@@ -4500,7 +4558,7 @@ subfacet_max_idle(const struct ofproto_dpif *ofproto)
                 ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
             }
         }
-        VLOG_INFO("%s: %s (msec:count)", ofproto->up.name, ds_cstr(&s));
+        VLOG_INFO("%s (msec:count)", ds_cstr(&s));
         ds_destroy(&s);
     }
 
@@ -4508,7 +4566,7 @@ subfacet_max_idle(const struct ofproto_dpif *ofproto)
 }
 
 static void
-expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
+expire_subfacets(struct dpif_backer *backer, int dp_max_idle)
 {
     /* Cutoff time for most flows. */
     long long int normal_cutoff = time_msec() - dp_max_idle;
@@ -4523,7 +4581,7 @@ expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
 
     n_batch = 0;
     HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
-                        &ofproto->subfacets) {
+                        &backer->subfacets) {
         long long int cutoff;
 
         cutoff = (subfacet->facet->xout.slow & (SLOW_CFM | SLOW_BFD | SLOW_LACP
@@ -4534,7 +4592,7 @@ expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
             if (subfacet->path != SF_NOT_INSTALLED) {
                 batch[n_batch++] = subfacet;
                 if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
-                    subfacet_destroy_batch(ofproto, batch, n_batch);
+                    subfacet_destroy_batch(backer, batch, n_batch);
                     n_batch = 0;
                 }
             } else {
@@ -4544,7 +4602,7 @@ expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
     }
 
     if (n_batch > 0) {
-        subfacet_destroy_batch(ofproto, batch, n_batch);
+        subfacet_destroy_batch(backer, batch, n_batch);
     }
 }
 
@@ -4894,8 +4952,9 @@ facet_check_consistency(struct facet *facet)
             ds_put_format(&s, ") (should have been table=%"PRIu8",",
                           rule->up.table_id);
             cls_rule_format(&rule->up.cr, &s);
-            ds_put_cstr(&s, ")\n");
+            ds_put_char(&s, ')');
 
+            VLOG_WARN("%s", ds_cstr(&s));
             ds_destroy(&s);
         }
         return false;
@@ -4921,13 +4980,14 @@ facet_check_consistency(struct facet *facet)
             ds_put_cstr(&s, ") (correct actions: ");
             format_odp_actions(&s, xout.odp_actions.data,
                                xout.odp_actions.size);
-            ds_put_cstr(&s, ")");
+            ds_put_char(&s, ')');
         }
 
         if (facet->xout.slow != xout.slow) {
             ds_put_format(&s, " slow path incorrect. should be %d", xout.slow);
         }
 
+        VLOG_WARN("%s", ds_cstr(&s));
         ds_destroy(&s);
     }
     xlate_out_uninit(&xout);
@@ -5133,13 +5193,13 @@ rule_credit_stats(struct rule_dpif *rule, const struct dpif_flow_stats *stats)
 /* Subfacets. */
 
 static struct subfacet *
-subfacet_find(struct ofproto_dpif *ofproto,
-              const struct nlattr *key, size_t key_len, uint32_t key_hash)
+subfacet_find(struct dpif_backer *backer, 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) {
+                             &backer->subfacets) {
         if (subfacet->key_len == key_len
             && !memcmp(key, subfacet->key, key_len)) {
             return subfacet;
@@ -5157,7 +5217,7 @@ static struct subfacet *
 subfacet_create(struct facet *facet, struct flow_miss *miss,
                 long long int now)
 {
-    struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
+    struct dpif_backer *backer = miss->ofproto->backer;
     enum odp_key_fitness key_fitness = miss->key_fitness;
     const struct nlattr *key = miss->key;
     size_t key_len = miss->key_len;
@@ -5169,7 +5229,7 @@ subfacet_create(struct facet *facet, struct flow_miss *miss,
     if (list_is_empty(&facet->subfacets)) {
         subfacet = &facet->one_subfacet;
     } else {
-        subfacet = subfacet_find(ofproto, key, key_len, key_hash);
+        subfacet = subfacet_find(backer, key, key_len, key_hash);
         if (subfacet) {
             if (subfacet->facet == facet) {
                 return subfacet;
@@ -5183,7 +5243,7 @@ subfacet_create(struct facet *facet, struct flow_miss *miss,
         subfacet = xmalloc(sizeof *subfacet);
     }
 
-    hmap_insert(&ofproto->subfacets, &subfacet->hmap_node, key_hash);
+    hmap_insert(&backer->subfacets, &subfacet->hmap_node, key_hash);
     list_push_back(&facet->subfacets, &subfacet->list_node);
     subfacet->facet = facet;
     subfacet->key_fitness = key_fitness;
@@ -5194,8 +5254,9 @@ subfacet_create(struct facet *facet, struct flow_miss *miss,
     subfacet->dp_packet_count = 0;
     subfacet->dp_byte_count = 0;
     subfacet->path = SF_NOT_INSTALLED;
+    subfacet->backer = backer;
 
-    ofproto->subfacet_add_count++;
+    backer->subfacet_add_count++;
     return subfacet;
 }
 
@@ -5208,11 +5269,10 @@ subfacet_destroy__(struct subfacet *subfacet)
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
 
     /* Update ofproto stats before uninstall the subfacet. */
-    ofproto->subfacet_del_count++;
-    ofproto->total_subfacet_life_span += (time_msec() - subfacet->created);
+    ofproto->backer->subfacet_del_count++;
 
     subfacet_uninstall(subfacet);
-    hmap_remove(&ofproto->subfacets, &subfacet->hmap_node);
+    hmap_remove(&subfacet->backer->subfacets, &subfacet->hmap_node);
     list_remove(&subfacet->list_node);
     free(subfacet->key);
     if (subfacet != &facet->one_subfacet) {
@@ -5236,7 +5296,7 @@ subfacet_destroy(struct subfacet *subfacet)
 }
 
 static void
-subfacet_destroy_batch(struct ofproto_dpif *ofproto,
+subfacet_destroy_batch(struct dpif_backer *backer,
                        struct subfacet **subfacets, int n)
 {
     struct dpif_op ops[SUBFACET_DESTROY_MAX_BATCH];
@@ -5252,7 +5312,7 @@ subfacet_destroy_batch(struct ofproto_dpif *ofproto,
         opsp[i] = &ops[i];
     }
 
-    dpif_operate(ofproto->backer->dpif, opsp, n);
+    dpif_operate(backer->dpif, opsp, n);
     for (i = 0; i < n; i++) {
         subfacet_reset_dp_stats(subfacets[i], &stats[i]);
         subfacets[i]->path = SF_NOT_INSTALLED;
@@ -5292,7 +5352,7 @@ subfacet_install(struct subfacet *subfacet, const struct ofpbuf *odp_actions,
                           &actions, &actions_len);
     }
 
-    ret = dpif_flow_put(ofproto->backer->dpif, flags, subfacet->key,
+    ret = dpif_flow_put(subfacet->backer->dpif, flags, subfacet->key,
                         subfacet->key_len, actions, actions_len, stats);
 
     if (stats) {
@@ -5390,20 +5450,22 @@ rule_dpif_lookup__(struct ofproto_dpif *ofproto, const struct flow *flow,
 {
     struct cls_rule *cls_rule;
     struct classifier *cls;
+    bool frag;
 
     if (table_id >= N_TABLES) {
         return NULL;
     }
 
     cls = &ofproto->up.tables[table_id].cls;
-    if (flow->nw_frag & FLOW_NW_FRAG_ANY
-        && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
-        /* For OFPC_NORMAL frag_handling, we must pretend that transport ports
-         * are unavailable. */
+    frag = (flow->nw_frag & FLOW_NW_FRAG_ANY) != 0;
+    if (frag && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
+        /* We must pretend that transport ports are unavailable. */
         struct flow ofpc_normal_flow = *flow;
         ofpc_normal_flow.tp_src = htons(0);
         ofpc_normal_flow.tp_dst = htons(0);
         cls_rule = classifier_lookup(cls, &ofpc_normal_flow);
+    } else if (frag && ofproto->up.frag_handling == OFPC_FRAG_DROP) {
+        cls_rule = &ofproto->drop_frags_rule->up.cr;
     } else {
         cls_rule = classifier_lookup(cls, flow);
     }
@@ -5963,10 +6025,14 @@ compose_output_action__(struct xlate_ctx *ctx, uint16_t ofp_port,
                                  &ctx->xout->odp_actions);
         ctx->xin->flow.tunnel = flow_tnl; /* Restore tunnel metadata */
     } else {
+        uint16_t vlandev_port;
         odp_port = ofport->odp_port;
-        out_port = vsp_realdev_to_vlandev(ctx->ofproto, odp_port,
-                                          ctx->xin->flow.vlan_tci);
-        if (out_port != odp_port) {
+        vlandev_port = vsp_realdev_to_vlandev(ctx->ofproto, ofp_port,
+                                              ctx->xin->flow.vlan_tci);
+        if (vlandev_port == ofp_port) {
+            out_port = odp_port;
+        } else {
+            out_port = ofp_port_to_odp_port(ctx->ofproto, vlandev_port);
             ctx->xin->flow.vlan_tci = htons(0);
         }
         ctx->xin->flow.skb_mark &= ~IPSEC_MARK;
@@ -6126,6 +6192,7 @@ execute_controller_action(struct xlate_ctx *ctx, int len,
 {
     struct ofputil_packet_in pin;
     struct ofpbuf *packet;
+    struct flow key;
 
     ovs_assert(!ctx->xout->slow || ctx->xout->slow == SLOW_CONTROLLER);
     ctx->xout->slow = SLOW_CONTROLLER;
@@ -6135,48 +6202,15 @@ execute_controller_action(struct xlate_ctx *ctx, int len,
 
     packet = ofpbuf_clone(ctx->xin->packet);
 
-    if (packet->l2 && packet->l3) {
-        struct eth_header *eh;
-        uint16_t mpls_depth;
-
-        eth_pop_vlan(packet);
-        eh = packet->l2;
-
-        memcpy(eh->eth_src, ctx->xin->flow.dl_src, sizeof eh->eth_src);
-        memcpy(eh->eth_dst, ctx->xin->flow.dl_dst, sizeof eh->eth_dst);
-
-        if (ctx->xin->flow.vlan_tci & htons(VLAN_CFI)) {
-            eth_push_vlan(packet, ctx->xin->flow.vlan_tci);
-        }
-
-        mpls_depth = eth_mpls_depth(packet);
+    key.skb_priority = 0;
+    key.skb_mark = 0;
+    memset(&key.tunnel, 0, sizeof key.tunnel);
 
-        if (mpls_depth < ctx->xin->flow.mpls_depth) {
-            push_mpls(packet, ctx->xin->flow.dl_type, ctx->xin->flow.mpls_lse);
-        } else if (mpls_depth > ctx->xin->flow.mpls_depth) {
-            pop_mpls(packet, ctx->xin->flow.dl_type);
-        } else if (mpls_depth) {
-            set_mpls_lse(packet, ctx->xin->flow.mpls_lse);
-        }
-
-        if (packet->l4) {
-            if (ctx->xin->flow.dl_type == htons(ETH_TYPE_IP)) {
-                packet_set_ipv4(packet, ctx->xin->flow.nw_src,
-                                ctx->xin->flow.nw_dst, ctx->xin->flow.nw_tos,
-                                ctx->xin->flow.nw_ttl);
-            }
+    commit_odp_actions(&ctx->xin->flow, &ctx->base_flow,
+                       &ctx->xout->odp_actions);
 
-            if (packet->l7) {
-                if (ctx->xin->flow.nw_proto == IPPROTO_TCP) {
-                    packet_set_tcp_port(packet, ctx->xin->flow.tp_src,
-                                        ctx->xin->flow.tp_dst);
-                } else if (ctx->xin->flow.nw_proto == IPPROTO_UDP) {
-                    packet_set_udp_port(packet, ctx->xin->flow.tp_src,
-                                        ctx->xin->flow.tp_dst);
-                }
-            }
-        }
-    }
+    odp_execute_actions(NULL, packet, &key, ctx->xout->odp_actions.data,
+                        ctx->xout->odp_actions.size, NULL, NULL);
 
     pin.packet = packet->data;
     pin.packet_len = packet->size;
@@ -8077,6 +8111,9 @@ ofproto_trace(struct ofproto_dpif *ofproto, const struct flow *flow,
     } else if (rule == ofproto->no_packet_in_rule) {
         ds_put_cstr(ds, "\nNo match, packets dropped because "
                     "OFPPC_NO_PACKET_IN is set on in_port.\n");
+    } else if (rule == ofproto->drop_frags_rule) {
+        ds_put_cstr(ds, "\nPackets dropped because they are IP fragments "
+                    "and the fragment handling mode is \"drop\".\n");
     }
 
     if (rule) {
@@ -8240,131 +8277,116 @@ ofproto_unixctl_dpif_dump_dps(struct unixctl_conn *conn, int argc OVS_UNUSED,
 }
 
 static void
-show_dp_format(const struct ofproto_dpif *ofproto, struct ds *ds)
+show_dp_rates(struct ds *ds, const char *heading,
+              const struct avg_subfacet_rates *rates)
 {
-    const struct shash_node **ports;
-    int i;
-    struct avg_subfacet_rates lifetime;
-    unsigned long long int minutes;
-    const int min_ms = 60 * 1000; /* milliseconds in one minute. */
+    ds_put_format(ds, "%s add rate: %5.3f/min, del rate: %5.3f/min\n",
+                  heading, rates->add_rate, rates->del_rate);
+}
 
-    minutes = (time_msec() - ofproto->created) / min_ms;
+static void
+dpif_show_backer(const struct dpif_backer *backer, struct ds *ds)
+{
+    size_t n_hit, n_missed, i;
+    const struct shash_node **ofprotos;
+    struct ofproto_dpif *ofproto;
+    struct shash ofproto_shash;
+    long long int minutes;
 
-    if (minutes > 0) {
-        lifetime.add_rate = (double)ofproto->total_subfacet_add_count
-                            / minutes;
-        lifetime.del_rate = (double)ofproto->total_subfacet_del_count
-                            / minutes;
-    }else {
-        lifetime.add_rate = 0.0;
-        lifetime.del_rate = 0.0;
-    }
-
-    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: cur: %zu, avg: %5.3f, max: %d,"
-                  " life span: %llu(ms)\n",
-                  hmap_count(&ofproto->subfacets),
-                  avg_subfacet_count(ofproto),
-                  ofproto->max_n_subfacet,
-                  avg_subfacet_life_span(ofproto));
+    n_hit = n_missed = 0;
+    HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
+        if (ofproto->backer == backer) {
+            n_missed += ofproto->n_missed;
+            n_hit += ofproto->n_hit;
+        }
+    }
+
+    ds_put_format(ds, "%s: hit:%"PRIu64" missed:%"PRIu64"\n",
+                  dpif_name(backer->dpif), n_hit, n_missed);
+    ds_put_format(ds, "\tflows: cur: %zu, avg: %u, max: %u,"
+                  " life span: %lldms\n", hmap_count(&backer->subfacets),
+                  backer->avg_n_subfacet, backer->max_n_subfacet,
+                  backer->avg_subfacet_life);
+
+    minutes = (time_msec() - backer->created) / (1000 * 60);
     if (minutes >= 60) {
-        show_dp_rates(ds, "\t\thourly avg:", &ofproto->hourly);
+        show_dp_rates(ds, "\thourly avg:", &backer->hourly);
     }
     if (minutes >= 60 * 24) {
-        show_dp_rates(ds, "\t\tdaily avg:",  &ofproto->daily);
+        show_dp_rates(ds, "\tdaily avg:",  &backer->daily);
     }
-    show_dp_rates(ds, "\t\toverall avg:",  &lifetime);
-
-    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;
+    show_dp_rates(ds, "\toverall avg:",  &backer->lifetime);
 
-        ds_put_format(ds, "\t%s %u/", name, ofport->ofp_port);
+    shash_init(&ofproto_shash);
+    ofprotos = get_ofprotos(&ofproto_shash);
+    for (i = 0; i < shash_count(&ofproto_shash); i++) {
+        struct ofproto_dpif *ofproto = ofprotos[i]->data;
+        const struct shash_node **ports;
+        size_t j;
 
-        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 (ofproto->backer != backer) {
+            continue;
         }
 
-        if (strcmp(type, "system")) {
-            struct netdev *netdev;
-            int error;
+        ds_put_format(ds, "\t%s: hit:%"PRIu64" missed:%"PRIu64"\n",
+                      ofproto->up.name, ofproto->n_hit, ofproto->n_missed);
 
-            ds_put_format(ds, " (%s", type);
+        ports = shash_sort(&ofproto->up.port_by_name);
+        for (j = 0; j < shash_count(&ofproto->up.port_by_name); j++) {
+            const struct shash_node *node = ports[j];
+            struct ofport *ofport = node->data;
+            struct smap config;
+            uint32_t odp_port;
 
-            error = netdev_open(name, type, &netdev);
-            if (!error) {
-                struct smap config;
+            ds_put_format(ds, "\t\t%s %u/", netdev_get_name(ofport->netdev),
+                          ofport->ofp_port);
 
-                smap_init(&config);
-                error = netdev_get_config(netdev, &config);
-                if (!error) {
-                    const struct smap_node **nodes;
-                    size_t i;
+            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:");
+            }
 
-                    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);
+            ds_put_format(ds, " (%s", netdev_get_type(ofport->netdev));
+
+            smap_init(&config);
+            if (!netdev_get_config(ofport->netdev, &config)) {
+                const struct smap_node **nodes;
+                size_t i;
 
-                netdev_close(netdev);
+                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);
+
             ds_put_char(ds, ')');
+            ds_put_char(ds, '\n');
         }
-        ds_put_char(ds, '\n');
+        free(ports);
     }
-    free(ports);
+    shash_destroy(&ofproto_shash);
+    free(ofprotos);
 }
 
 static void
-ofproto_unixctl_dpif_show(struct unixctl_conn *conn, int argc,
-                          const char *argv[], void *aux OVS_UNUSED)
+ofproto_unixctl_dpif_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
+                          const char *argv[] OVS_UNUSED, 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);
-        }
+    const struct shash_node **backers;
+    int i;
 
-        shash_destroy(&ofproto_shash);
-        free(sorted_ofprotos);
+    backers = shash_sort(&all_dpif_backers);
+    for (i = 0; i < shash_count(&all_dpif_backers); i++) {
+        dpif_show_backer(backers[i]->data, &ds);
     }
+    free(backers);
 
     unixctl_command_reply(conn, ds_cstr(&ds));
     ds_destroy(&ds);
@@ -8387,9 +8409,13 @@ ofproto_unixctl_dpif_dump_flows(struct unixctl_conn *conn,
 
     update_stats(ofproto->backer);
 
-    HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->subfacets) {
+    HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->backer->subfacets) {
         struct facet *facet = subfacet->facet;
 
+        if (ofproto_dpif_cast(facet->rule->up.ofproto) != ofproto) {
+            continue;
+        }
+
         odp_flow_key_format(subfacet->key, subfacet->key_len, &ds);
 
         ds_put_format(&ds, ", packets:%"PRIu64", bytes:%"PRIu64", used:",
@@ -8471,8 +8497,8 @@ ofproto_dpif_unixctl_init(void)
                              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/show", "", 0, 0, 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,
@@ -8524,33 +8550,31 @@ hash_realdev_vid(uint16_t realdev_ofp_port, int vid)
     return hash_2words(realdev_ofp_port, vid);
 }
 
-/* Returns the ODP port number of the Linux VLAN device that corresponds to
- * 'vlan_tci' on the network device with port number 'realdev_odp_port' in
- * 'ofproto'.  For example, given 'realdev_odp_port' of eth0 and 'vlan_tci' 9,
- * it would return the port number of eth0.9.
+/* Returns the OFP port number of the Linux VLAN device that corresponds to
+ * 'vlan_tci' on the network device with port number 'realdev_ofp_port' in
+ * 'struct ofport_dpif'.  For example, given 'realdev_ofp_port' of eth0 and
+ * 'vlan_tci' 9, it would return the port number of eth0.9.
  *
- * Unless VLAN splinters are enabled for port 'realdev_odp_port', this
- * function just returns its 'realdev_odp_port' argument. */
-static uint32_t
+ * Unless VLAN splinters are enabled for port 'realdev_ofp_port', this
+ * function just returns its 'realdev_ofp_port' argument. */
+static uint16_t
 vsp_realdev_to_vlandev(const struct ofproto_dpif *ofproto,
-                       uint32_t realdev_odp_port, ovs_be16 vlan_tci)
+                       uint16_t realdev_ofp_port, ovs_be16 vlan_tci)
 {
     if (!hmap_is_empty(&ofproto->realdev_vid_map)) {
-        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(ofproto, vsp->vlandev_ofp_port);
+                return vsp->vlandev_ofp_port;
             }
         }
     }
-    return realdev_odp_port;
+    return realdev_ofp_port;
 }
 
 static struct vlan_splinter *
@@ -8697,45 +8721,6 @@ odp_port_to_ofp_port(const struct ofproto_dpif *ofproto, uint32_t odp_port)
         return OFPP_NONE;
     }
 }
-static unsigned long long int
-avg_subfacet_life_span(const struct ofproto_dpif *ofproto)
-{
-    unsigned long long int dc;
-    unsigned long long int avg;
-
-    dc = ofproto->total_subfacet_del_count + ofproto->subfacet_del_count;
-    avg = dc ? ofproto->total_subfacet_life_span / dc : 0;
-
-    return avg;
-}
-
-static double
-avg_subfacet_count(const struct ofproto_dpif *ofproto)
-{
-    double avg_c = 0.0;
-
-    if (ofproto->n_update_stats) {
-        avg_c = (double)ofproto->total_subfacet_count
-                / ofproto->n_update_stats;
-    }
-
-    return avg_c;
-}
-
-static void
-show_dp_rates(struct ds *ds, const char *heading,
-              const struct avg_subfacet_rates *rates)
-{
-    ds_put_format(ds, "%s add rate: %5.3f/min, del rate: %5.3f/min\n",
-                  heading, rates->add_rate, rates->del_rate);
-}
-
-static void
-update_max_subfacet_count(struct ofproto_dpif *ofproto)
-{
-    ofproto->max_n_subfacet = MAX(ofproto->max_n_subfacet,
-                                  hmap_count(&ofproto->subfacets));
-}
 
 /* Compute exponentially weighted moving average, adding 'new' as the newest,
  * most heavily weighted element.  'base' designates the rate of decay: after
@@ -8748,35 +8733,40 @@ exp_mavg(double *avg, int base, double new)
 }
 
 static void
-update_moving_averages(struct ofproto_dpif *ofproto)
+update_moving_averages(struct dpif_backer *backer)
 {
     const int min_ms = 60 * 1000; /* milliseconds in one minute. */
+    long long int minutes = (time_msec() - backer->created) / min_ms;
+
+    if (minutes > 0) {
+        backer->lifetime.add_rate = (double) backer->total_subfacet_add_count
+            / minutes;
+        backer->lifetime.del_rate = (double) backer->total_subfacet_del_count
+            / minutes;
+    } else {
+        backer->lifetime.add_rate = 0.0;
+        backer->lifetime.del_rate = 0.0;
+    }
 
     /* Update hourly averages on the minute boundaries. */
-    if (time_msec() - ofproto->last_minute >= min_ms) {
-        exp_mavg(&ofproto->hourly.add_rate, 60, ofproto->subfacet_add_count);
-        exp_mavg(&ofproto->hourly.del_rate, 60, ofproto->subfacet_del_count);
+    if (time_msec() - backer->last_minute >= min_ms) {
+        exp_mavg(&backer->hourly.add_rate, 60, backer->subfacet_add_count);
+        exp_mavg(&backer->hourly.del_rate, 60, backer->subfacet_del_count);
 
         /* Update daily averages on the hour boundaries. */
-        if ((ofproto->last_minute - ofproto->created) / min_ms % 60 == 59) {
-            exp_mavg(&ofproto->daily.add_rate, 24, ofproto->hourly.add_rate);
-            exp_mavg(&ofproto->daily.del_rate, 24, ofproto->hourly.del_rate);
+        if ((backer->last_minute - backer->created) / min_ms % 60 == 59) {
+            exp_mavg(&backer->daily.add_rate, 24, backer->hourly.add_rate);
+            exp_mavg(&backer->daily.del_rate, 24, backer->hourly.del_rate);
         }
 
-        ofproto->total_subfacet_add_count += ofproto->subfacet_add_count;
-        ofproto->total_subfacet_del_count += ofproto->subfacet_del_count;
-        ofproto->subfacet_add_count = 0;
-        ofproto->subfacet_del_count = 0;
-        ofproto->last_minute += min_ms;
+        backer->total_subfacet_add_count += backer->subfacet_add_count;
+        backer->total_subfacet_del_count += backer->subfacet_del_count;
+        backer->subfacet_add_count = 0;
+        backer->subfacet_del_count = 0;
+        backer->last_minute += min_ms;
     }
 }
 
-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,