ofproto-dpif-xlate: Do initial rule lookup for callers.
[sliver-openvswitch.git] / ofproto / ofproto-dpif.c
index c5414f3..b8b15e3 100644 (file)
@@ -31,6 +31,7 @@
 #include "dpif.h"
 #include "dynamic-string.h"
 #include "fail-open.h"
+#include "guarded-list.h"
 #include "hmapx.h"
 #include "lacp.h"
 #include "learn.h"
@@ -51,6 +52,7 @@
 #include "ofproto-dpif-governor.h"
 #include "ofproto-dpif-ipfix.h"
 #include "ofproto-dpif-mirror.h"
+#include "ofproto-dpif-monitor.h"
 #include "ofproto-dpif-sflow.h"
 #include "ofproto-dpif-upcall.h"
 #include "ofproto-dpif-xlate.h"
 VLOG_DEFINE_THIS_MODULE(ofproto_dpif);
 
 COVERAGE_DEFINE(ofproto_dpif_expired);
-COVERAGE_DEFINE(facet_changed_rule);
 COVERAGE_DEFINE(facet_revalidate);
 COVERAGE_DEFINE(facet_unexpected);
-COVERAGE_DEFINE(facet_suppress);
+COVERAGE_DEFINE(facet_create);
+COVERAGE_DEFINE(facet_remove);
+COVERAGE_DEFINE(subfacet_create);
+COVERAGE_DEFINE(subfacet_destroy);
 COVERAGE_DEFINE(subfacet_install_fail);
 COVERAGE_DEFINE(packet_in_overflow);
-COVERAGE_DEFINE(flow_mod_overflow);
 
 /* Number of implemented OpenFlow tables. */
 enum { N_TABLES = 255 };
@@ -83,7 +86,29 @@ BUILD_ASSERT_DECL(N_TABLES >= 2 && N_TABLES <= 255);
 struct flow_miss;
 struct facet;
 
+struct rule_dpif {
+    struct rule up;
+
+    /* These statistics:
+     *
+     *   - Do include packets and bytes from facets that have been deleted or
+     *     whose own statistics have been folded into the rule.
+     *
+     *   - Do include packets and bytes sent "by hand" that were accounted to
+     *     the rule without any facet being involved (this is a rare corner
+     *     case in rule_execute()).
+     *
+     *   - Do not include packet or bytes that can be obtained from any facet's
+     *     packet_count or byte_count member or that can be obtained from the
+     *     datapath by, e.g., dpif_flow_get() for any subfacet.
+     */
+    struct ovs_mutex stats_mutex;
+    uint64_t packet_count OVS_GUARDED;  /* Number of packets received. */
+    uint64_t byte_count OVS_GUARDED;    /* Number of bytes received. */
+};
+
 static void rule_get_stats(struct rule *, uint64_t *packets, uint64_t *bytes);
+static struct rule_dpif *rule_dpif_cast(const struct rule *);
 
 struct ofbundle {
     struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
@@ -152,7 +177,6 @@ struct subfacet {
     struct facet *facet;        /* Owning facet. */
     struct dpif_backer *backer; /* Owning backer. */
 
-    enum odp_key_fitness key_fitness;
     struct nlattr *key;
     int key_len;
 
@@ -205,8 +229,7 @@ static void subfacet_uninstall(struct subfacet *);
  * Flow expiration works in terms of subfacets, so a facet must have at
  * least one subfacet or it will never expire, leaking memory. */
 struct facet {
-    /* Owners. */
-    struct hmap_node hmap_node;  /* In owning ofproto's 'facets' hmap. */
+    /* Owner. */
     struct ofproto_dpif *ofproto;
 
     /* Owned data. */
@@ -339,8 +362,6 @@ ofport_dpif_cast(const struct ofport *ofport)
 }
 
 static void port_run(struct ofport_dpif *);
-static void port_run_fast(struct ofport_dpif *);
-static void port_wait(struct ofport_dpif *);
 static int set_bfd(struct ofport *, const struct smap *);
 static int set_cfm(struct ofport *, const struct cfm_settings *);
 static void ofport_update_peer(struct ofport_dpif *);
@@ -416,20 +437,6 @@ struct dpif_backer {
     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;
-
     /* Number of upcall handling threads. */
     unsigned int n_handler_threads;
 };
@@ -438,7 +445,6 @@ struct dpif_backer {
 static struct shash all_dpif_backers = SHASH_INITIALIZER(&all_dpif_backers);
 
 static void drop_key_clear(struct dpif_backer *);
-static void update_moving_averages(struct dpif_backer *backer);
 
 struct ofproto_dpif {
     struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
@@ -463,11 +469,9 @@ struct ofproto_dpif {
     struct classifier facets;     /* Contains 'struct facet's. */
     long long int consistency_rl;
 
-    /* Support for debugging async flow mods. */
-    struct list completions;
-
-    struct netdev_stats stats; /* To account packets generated and consumed in
-                                * userspace. */
+    struct ovs_mutex stats_mutex;
+    struct netdev_stats stats OVS_GUARDED; /* To account packets generated and
+                                            * consumed in userspace. */
 
     /* Spanning tree. */
     struct stp *stp;
@@ -489,19 +493,9 @@ struct ofproto_dpif {
     uint64_t n_missed;
 
     /* Work queues. */
-    struct ovs_mutex flow_mod_mutex;
-    struct list flow_mods OVS_GUARDED;
-    size_t n_flow_mods OVS_GUARDED;
-
-    struct ovs_mutex pin_mutex;
-    struct list pins OVS_GUARDED;
-    size_t n_pins OVS_GUARDED;
+    struct guarded_list pins;      /* Contains "struct ofputil_packet_in"s. */
 };
 
-/* Defer flow mod completion until "ovs-appctl ofproto/unclog"?  (Useful only
- * for debugging the asynchronous flow_mod implementation.) */
-static bool clogged;
-
 /* By default, flows in the datapath are wildcarded (megaflows).  They
  * may be disabled with the "ovs-appctl dpif/disable-megaflows" command. */
 static bool enable_megaflows = true;
@@ -532,32 +526,19 @@ static int expire(struct dpif_backer *);
 /* NetFlow. */
 static void send_netflow_active_timeouts(struct ofproto_dpif *);
 
-/* Utilities. */
-static int send_packet(const struct ofport_dpif *, struct ofpbuf *packet);
-
 /* 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);
 
-/* Executes and takes ownership of 'fm'. */
+/* Executes 'fm'.  The caller retains ownership of 'fm' and everything in
+ * it. */
 void
 ofproto_dpif_flow_mod(struct ofproto_dpif *ofproto,
                       struct ofputil_flow_mod *fm)
 {
-    ovs_mutex_lock(&ofproto->flow_mod_mutex);
-    if (ofproto->n_flow_mods > 1024) {
-        ovs_mutex_unlock(&ofproto->flow_mod_mutex);
-        COVERAGE_INC(flow_mod_overflow);
-        free(fm->ofpacts);
-        free(fm);
-        return;
-    }
-
-    list_push_back(&ofproto->flow_mods, &fm->list_node);
-    ofproto->n_flow_mods++;
-    ovs_mutex_unlock(&ofproto->flow_mod_mutex);
+    ofproto_flow_mod(&ofproto->up, fm);
 }
 
 /* Appends 'pin' to the queue of "packet ins" to be sent to the controller.
@@ -566,18 +547,11 @@ void
 ofproto_dpif_send_packet_in(struct ofproto_dpif *ofproto,
                             struct ofputil_packet_in *pin)
 {
-    ovs_mutex_lock(&ofproto->pin_mutex);
-    if (ofproto->n_pins > 1024) {
-        ovs_mutex_unlock(&ofproto->pin_mutex);
+    if (!guarded_list_push_back(&ofproto->pins, &pin->list_node, 1024)) {
         COVERAGE_INC(packet_in_overflow);
         free(CONST_CAST(void *, pin->packet));
         free(pin);
-        return;
     }
-
-    list_push_back(&ofproto->pins, &pin->list_node);
-    ofproto->n_pins++;
-    ovs_mutex_unlock(&ofproto->pin_mutex);
 }
 \f
 /* Factory functions. */
@@ -822,7 +796,7 @@ type_run(const char *type)
             HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
                 int stp_port = ofport->stp_port
                     ? stp_port_no(ofport->stp_port)
-                    : 0;
+                    : -1;
                 xlate_ofport_set(ofproto, ofport->bundle, ofport,
                                  ofport->up.ofp_port, ofport->odp_port,
                                  ofport->up.netdev, ofport->cfm,
@@ -1010,7 +984,6 @@ process_dpif_port_error(struct dpif_backer *backer, int error)
 static int
 dpif_backer_run_fast(struct dpif_backer *backer)
 {
-    udpif_run(backer->udpif);
     handle_upcalls(backer);
 
     return 0;
@@ -1088,8 +1061,6 @@ dealloc(struct ofproto *ofproto_)
 static void
 close_dpif_backer(struct dpif_backer *backer)
 {
-    struct shash_node *node;
-
     ovs_assert(backer->refcount > 0);
 
     if (--backer->refcount) {
@@ -1099,13 +1070,13 @@ close_dpif_backer(struct dpif_backer *backer)
     drop_key_clear(backer);
     hmap_destroy(&backer->drop_keys);
 
+    udpif_destroy(backer->udpif);
+
     simap_destroy(&backer->tnl_backers);
     ovs_rwlock_destroy(&backer->odp_to_ofport_lock);
     hmap_destroy(&backer->odp_to_ofport_map);
-    node = shash_find(&all_dpif_backers, backer->type);
+    shash_find_and_delete(&all_dpif_backers, backer->type);
     free(backer->type);
-    shash_delete(&all_dpif_backers, node);
-    udpif_destroy(backer->udpif);
     dpif_close(backer->dpif);
 
     ovs_assert(hmap_is_empty(&backer->subfacets));
@@ -1229,14 +1200,6 @@ open_dpif_backer(const char *type, struct dpif_backer **backerp)
 
     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;
 
@@ -1248,7 +1211,7 @@ construct(struct ofproto *ofproto_)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
     struct shash_node *node, *next;
-    odp_port_t max_ports;
+    uint32_t max_ports;
     int error;
 
     error = open_dpif_backer(ofproto->up.type, &ofproto->backer);
@@ -1257,8 +1220,7 @@ construct(struct ofproto *ofproto_)
     }
 
     max_ports = dpif_get_max_ports(ofproto->backer->dpif);
-    ofproto_init_max_ports(ofproto_, u16_to_ofp(MIN(odp_to_u32(max_ports),
-                                                    ofp_to_u16(OFPP_MAX))));
+    ofproto_init_max_ports(ofproto_, MIN(max_ports, ofp_to_u16(OFPP_MAX)));
 
     ofproto->netflow = NULL;
     ofproto->sflow = NULL;
@@ -1268,24 +1230,13 @@ construct(struct ofproto *ofproto_)
     ofproto->ml = mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME);
     ofproto->mbridge = mbridge_create();
     ofproto->has_bonded_bundles = false;
+    ovs_mutex_init(&ofproto->stats_mutex);
     ovs_mutex_init(&ofproto->vsp_mutex);
 
     classifier_init(&ofproto->facets);
     ofproto->consistency_rl = LLONG_MIN;
 
-    list_init(&ofproto->completions);
-
-    ovs_mutex_init(&ofproto->flow_mod_mutex);
-    ovs_mutex_lock(&ofproto->flow_mod_mutex);
-    list_init(&ofproto->flow_mods);
-    ofproto->n_flow_mods = 0;
-    ovs_mutex_unlock(&ofproto->flow_mod_mutex);
-
-    ovs_mutex_init(&ofproto->pin_mutex);
-    ovs_mutex_lock(&ofproto->pin_mutex);
-    list_init(&ofproto->pins);
-    ofproto->n_pins = 0;
-    ovs_mutex_unlock(&ofproto->pin_mutex);
+    guarded_list_init(&ofproto->pins);
 
     ofproto_dpif_unixctl_init();
 
@@ -1360,7 +1311,7 @@ add_internal_flow(struct ofproto_dpif *ofproto, int id,
 
     if (rule_dpif_lookup_in_table(ofproto, &fm.match.flow, NULL, TBL_INTERNAL,
                                   rulep)) {
-        ovs_rwlock_unlock(&(*rulep)->up.evict);
+        rule_dpif_unref(*rulep);
     } else {
         NOT_REACHED();
     }
@@ -1403,65 +1354,53 @@ add_internal_flows(struct ofproto_dpif *ofproto)
     return error;
 }
 
-static void
-complete_operations(struct ofproto_dpif *ofproto)
-{
-    struct dpif_completion *c, *next;
-
-    LIST_FOR_EACH_SAFE (c, next, list_node, &ofproto->completions) {
-        ofoperation_complete(c->op, 0);
-        list_remove(&c->list_node);
-        free(c);
-    }
-}
-
 static void
 destruct(struct ofproto *ofproto_)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
     struct rule_dpif *rule, *next_rule;
     struct ofputil_packet_in *pin, *next_pin;
-    struct ofputil_flow_mod *fm, *next_fm;
+    struct facet *facet, *next_facet;
+    struct cls_cursor cursor;
     struct oftable *table;
+    struct list pins;
+
+    ovs_rwlock_rdlock(&ofproto->facets.rwlock);
+    cls_cursor_init(&cursor, &ofproto->facets, NULL);
+    ovs_rwlock_unlock(&ofproto->facets.rwlock);
+    CLS_CURSOR_FOR_EACH_SAFE (facet, next_facet, cr, &cursor) {
+        facet_remove(facet);
+    }
 
     ofproto->backer->need_revalidate = REV_RECONFIGURE;
     ovs_rwlock_wrlock(&xlate_rwlock);
     xlate_remove_ofproto(ofproto);
     ovs_rwlock_unlock(&xlate_rwlock);
 
+    /* Discard any flow_miss_batches queued up for 'ofproto', avoiding a
+     * use-after-free error. */
+    udpif_revalidate(ofproto->backer->udpif);
+
     hmap_remove(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node);
-    complete_operations(ofproto);
 
     OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
         struct cls_cursor cursor;
 
-        ovs_rwlock_wrlock(&table->cls.rwlock);
+        ovs_rwlock_rdlock(&table->cls.rwlock);
         cls_cursor_init(&cursor, &table->cls, NULL);
+        ovs_rwlock_unlock(&table->cls.rwlock);
         CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
-            ofproto_rule_destroy(&ofproto->up, &table->cls, &rule->up);
+            ofproto_rule_delete(&ofproto->up, &rule->up);
         }
-        ovs_rwlock_unlock(&table->cls.rwlock);
     }
 
-    ovs_mutex_lock(&ofproto->flow_mod_mutex);
-    LIST_FOR_EACH_SAFE (fm, next_fm, list_node, &ofproto->flow_mods) {
-        list_remove(&fm->list_node);
-        ofproto->n_flow_mods--;
-        free(fm->ofpacts);
-        free(fm);
-    }
-    ovs_mutex_unlock(&ofproto->flow_mod_mutex);
-    ovs_mutex_destroy(&ofproto->flow_mod_mutex);
-
-    ovs_mutex_lock(&ofproto->pin_mutex);
-    LIST_FOR_EACH_SAFE (pin, next_pin, list_node, &ofproto->pins) {
+    guarded_list_pop_all(&ofproto->pins, &pins);
+    LIST_FOR_EACH_SAFE (pin, next_pin, list_node, &pins) {
         list_remove(&pin->list_node);
-        ofproto->n_pins--;
         free(CONST_CAST(void *, pin->packet));
         free(pin);
     }
-    ovs_mutex_unlock(&ofproto->pin_mutex);
-    ovs_mutex_destroy(&ofproto->pin_mutex);
+    guarded_list_destroy(&ofproto->pins);
 
     mbridge_unref(ofproto->mbridge);
 
@@ -1479,6 +1418,7 @@ destruct(struct ofproto *ofproto_)
     sset_destroy(&ofproto->ghost_ports);
     sset_destroy(&ofproto->port_poll_set);
 
+    ovs_mutex_destroy(&ofproto->stats_mutex);
     ovs_mutex_destroy(&ofproto->vsp_mutex);
 
     close_dpif_backer(ofproto->backer);
@@ -1489,9 +1429,7 @@ run_fast(struct ofproto *ofproto_)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
     struct ofputil_packet_in *pin, *next_pin;
-    struct ofputil_flow_mod *fm, *next_fm;
-    struct list flow_mods, pins;
-    struct ofport_dpif *ofport;
+    struct list pins;
 
     /* Do not perform any periodic activity required by 'ofproto' while
      * waiting for flow restore to complete. */
@@ -1499,40 +1437,7 @@ run_fast(struct ofproto *ofproto_)
         return 0;
     }
 
-    ovs_mutex_lock(&ofproto->flow_mod_mutex);
-    if (ofproto->n_flow_mods) {
-        flow_mods = ofproto->flow_mods;
-        list_moved(&flow_mods);
-        list_init(&ofproto->flow_mods);
-        ofproto->n_flow_mods = 0;
-    } else {
-        list_init(&flow_mods);
-    }
-    ovs_mutex_unlock(&ofproto->flow_mod_mutex);
-
-    LIST_FOR_EACH_SAFE (fm, next_fm, list_node, &flow_mods) {
-        int error = ofproto_flow_mod(&ofproto->up, fm);
-        if (error && !VLOG_DROP_WARN(&rl)) {
-            VLOG_WARN("learning action failed to modify flow table (%s)",
-                      ofperr_get_name(error));
-        }
-
-        list_remove(&fm->list_node);
-        free(fm->ofpacts);
-        free(fm);
-    }
-
-    ovs_mutex_lock(&ofproto->pin_mutex);
-    if (ofproto->n_pins) {
-        pins = ofproto->pins;
-        list_moved(&pins);
-        list_init(&ofproto->pins);
-        ofproto->n_pins = 0;
-    } else {
-        list_init(&pins);
-    }
-    ovs_mutex_unlock(&ofproto->pin_mutex);
-
+    guarded_list_pop_all(&ofproto->pins, &pins);
     LIST_FOR_EACH_SAFE (pin, next_pin, list_node, &pins) {
         connmgr_send_packet_in(ofproto->up.connmgr, pin);
         list_remove(&pin->list_node);
@@ -1540,10 +1445,7 @@ run_fast(struct ofproto *ofproto_)
         free(pin);
     }
 
-    HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
-        port_run_fast(ofport);
-    }
-
+    ofproto_dpif_monitor_run_fast();
     return 0;
 }
 
@@ -1555,10 +1457,6 @@ run(struct ofproto *ofproto_)
     struct ofbundle *bundle;
     int error;
 
-    if (!clogged) {
-        complete_operations(ofproto);
-    }
-
     if (mbridge_need_revalidate(ofproto->mbridge)) {
         ofproto->backer->need_revalidate = REV_RECONFIGURE;
         ovs_rwlock_wrlock(&ofproto->ml->rwlock);
@@ -1589,6 +1487,9 @@ run(struct ofproto *ofproto_)
         dpif_ipfix_run(ofproto->ipfix);
     }
 
+    ofproto_dpif_monitor_run_fast();
+    ofproto_dpif_monitor_run();
+
     HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
         port_run(ofport);
     }
@@ -1633,13 +1534,8 @@ static void
 wait(struct ofproto *ofproto_)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
-    struct ofport_dpif *ofport;
     struct ofbundle *bundle;
 
-    if (!clogged && !list_is_empty(&ofproto->completions)) {
-        poll_immediate_wake();
-    }
-
     if (ofproto_get_flow_restore_wait()) {
         return;
     }
@@ -1650,9 +1546,7 @@ wait(struct ofproto *ofproto_)
     if (ofproto->ipfix) {
         dpif_ipfix_wait(ofproto->ipfix);
     }
-    HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
-        port_wait(ofport);
-    }
+    ofproto_dpif_monitor_wait();
     HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
         bundle_wait(bundle);
     }
@@ -1915,6 +1809,9 @@ port_modified(struct ofport *port_)
         bfd_set_netdev(port->bfd, port->up.netdev);
     }
 
+    ofproto_dpif_monitor_port_update(port, port->bfd, port->cfm,
+                                     port->up.pp.hw_addr);
+
     if (port->is_tunnel && tnl_port_reconfigure(port, port->up.netdev,
                                                 port->odp_port)) {
         ofproto_dpif_cast(port->up.ofproto)->backer->need_revalidate =
@@ -2005,11 +1902,9 @@ static int
 set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
 {
     struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
-    int error;
+    int error = 0;
 
-    if (!s) {
-        error = 0;
-    } else {
+    if (s) {
         if (!ofport->cfm) {
             struct ofproto_dpif *ofproto;
 
@@ -2019,13 +1914,17 @@ set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
         }
 
         if (cfm_configure(ofport->cfm, s)) {
-            return 0;
+            error = 0;
+            goto out;
         }
 
         error = EINVAL;
     }
     cfm_unref(ofport->cfm);
     ofport->cfm = NULL;
+out:
+    ofproto_dpif_monitor_port_update(ofport, ofport->bfd, ofport->cfm,
+                                     ofport->up.pp.hw_addr);
     return error;
 }
 
@@ -2059,7 +1958,8 @@ set_bfd(struct ofport *ofport_, const struct smap *cfg)
     if (ofport->bfd != old) {
         ofproto->backer->need_revalidate = REV_RECONFIGURE;
     }
-
+    ofproto_dpif_monitor_port_update(ofport, ofport->bfd, ofport->cfm,
+                                     ofport->up.pp.hw_addr);
     return 0;
 }
 
@@ -2097,7 +1997,7 @@ send_bpdu_cb(struct ofpbuf *pkt, int port_num, void *ofproto_)
             VLOG_WARN_RL(&rl, "%s: cannot send BPDU on port %d "
                          "with unknown MAC", ofproto->up.name, port_num);
         } else {
-            send_packet(ofport, pkt);
+            ofproto_dpif_send_packet(ofport, pkt);
         }
     }
     ofpbuf_delete(pkt);
@@ -2693,7 +2593,7 @@ send_pdu_cb(void *port_, const void *pdu, size_t pdu_size)
                                  pdu_size);
         memcpy(packet_pdu, pdu, pdu_size);
 
-        send_packet(port, &packet);
+        ofproto_dpif_send_packet(port, &packet);
         ofpbuf_uninit(&packet);
     } else {
         VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
@@ -2706,35 +2606,39 @@ static void
 bundle_send_learning_packets(struct ofbundle *bundle)
 {
     struct ofproto_dpif *ofproto = bundle->ofproto;
+    struct ofpbuf *learning_packet;
     int error, n_packets, n_errors;
     struct mac_entry *e;
+    struct list packets;
 
-    error = n_packets = n_errors = 0;
+    list_init(&packets);
     ovs_rwlock_rdlock(&ofproto->ml->rwlock);
     LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
         if (e->port.p != bundle) {
-            struct ofpbuf *learning_packet;
-            struct ofport_dpif *port;
             void *port_void;
-            int ret;
 
-            /* The assignment to "port" is unnecessary but makes "grep"ing for
-             * struct ofport_dpif more effective. */
             learning_packet = bond_compose_learning_packet(bundle->bond,
                                                            e->mac, e->vlan,
                                                            &port_void);
-            port = port_void;
-            ret = send_packet(port, learning_packet);
-            ofpbuf_delete(learning_packet);
-            if (ret) {
-                error = ret;
-                n_errors++;
-            }
-            n_packets++;
+            learning_packet->private_p = port_void;
+            list_push_back(&packets, &learning_packet->list_node);
         }
     }
     ovs_rwlock_unlock(&ofproto->ml->rwlock);
 
+    error = n_packets = n_errors = 0;
+    LIST_FOR_EACH (learning_packet, list_node, &packets) {
+        int ret;
+
+        ret = ofproto_dpif_send_packet(learning_packet->private_p, learning_packet);
+        if (ret) {
+            error = ret;
+            n_errors++;
+        }
+        n_packets++;
+    }
+    ofpbuf_list_delete(&packets);
+
     if (n_errors) {
         static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
         VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
@@ -2940,28 +2844,6 @@ ofport_update_peer(struct ofport_dpif *ofport)
     free(peer_name);
 }
 
-static void
-port_run_fast(struct ofport_dpif *ofport)
-{
-    if (ofport->cfm && cfm_should_send_ccm(ofport->cfm)) {
-        struct ofpbuf packet;
-
-        ofpbuf_init(&packet, 0);
-        cfm_compose_ccm(ofport->cfm, &packet, ofport->up.pp.hw_addr);
-        send_packet(ofport, &packet);
-        ofpbuf_uninit(&packet);
-    }
-
-    if (ofport->bfd && bfd_should_send_packet(ofport->bfd)) {
-        struct ofpbuf packet;
-
-        ofpbuf_init(&packet, 0);
-        bfd_put_packet(ofport->bfd, &packet, ofport->up.pp.hw_addr);
-        send_packet(ofport, &packet);
-        ofpbuf_uninit(&packet);
-    }
-}
-
 static void
 port_run(struct ofport_dpif *ofport)
 {
@@ -2973,12 +2855,9 @@ port_run(struct ofport_dpif *ofport)
 
     ofport->carrier_seq = carrier_seq;
 
-    port_run_fast(ofport);
-
     if (ofport->cfm) {
         int cfm_opup = cfm_get_opup(ofport->cfm);
 
-        cfm_run(ofport->cfm);
         cfm_enable = !cfm_get_fault(ofport->cfm);
 
         if (cfm_opup >= 0) {
@@ -2987,7 +2866,6 @@ port_run(struct ofport_dpif *ofport)
     }
 
     if (ofport->bfd) {
-        bfd_run(ofport->bfd);
         bfd_enable = bfd_forwarding(ofport->bfd);
     }
 
@@ -3010,18 +2888,6 @@ port_run(struct ofport_dpif *ofport)
     ofport->may_enable = enable;
 }
 
-static void
-port_wait(struct ofport_dpif *ofport)
-{
-    if (ofport->cfm) {
-        cfm_wait(ofport->cfm);
-    }
-
-    if (ofport->bfd) {
-        bfd_wait(ofport->bfd);
-    }
-}
-
 static int
 port_query_by_name(const struct ofproto *ofproto_, const char *devname,
                    struct ofproto_port *ofproto_port)
@@ -3109,7 +2975,7 @@ port_del(struct ofproto *ofproto_, ofp_port_t ofp_port)
     sset_find_and_delete(&ofproto->ghost_ports,
                          netdev_get_name(ofport->up.netdev));
     ofproto->backer->need_revalidate = REV_RECONFIGURE;
-    if (!ofport->is_tunnel) {
+    if (!ofport->is_tunnel && !netdev_vport_is_patch(ofport->up.netdev)) {
         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
@@ -3135,10 +3001,11 @@ port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats)
     if (!error && ofport_->ofp_port == OFPP_LOCAL) {
         struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
 
+        ovs_mutex_lock(&ofproto->stats_mutex);
         /* ofproto->stats.tx_packets represents packets that we created
          * internally and sent to some port (e.g. packets sent with
-         * send_packet()).  Account for them as if they had come from
-         * OFPP_LOCAL and got forwarded. */
+         * ofproto_dpif_send_packet()).  Account for them as if they had
+         * come from OFPP_LOCAL and got forwarded. */
 
         if (stats->rx_packets != UINT64_MAX) {
             stats->rx_packets += ofproto->stats.tx_packets;
@@ -3159,6 +3026,7 @@ port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats)
         if (stats->tx_bytes != UINT64_MAX) {
             stats->tx_bytes += ofproto->stats.rx_bytes;
         }
+        ovs_mutex_unlock(&ofproto->stats_mutex);
     }
 
     return error;
@@ -3316,7 +3184,7 @@ flow_miss_should_make_facet(struct flow_miss *miss)
 
     hash = flow_hash_in_wildcards(&miss->flow, &miss->xout.wc, 0);
     return governor_should_install_flow(backer->governor, hash,
-                                        list_size(&miss->packets));
+                                        miss->stats.n_packets);
 }
 
 /* Handles 'miss', which matches 'facet'.  May add any required datapath
@@ -3394,7 +3262,7 @@ handle_flow_miss(struct flow_miss *miss, struct flow_miss_op *ops,
 {
     struct facet *facet;
 
-    miss->ofproto->n_missed += list_size(&miss->packets);
+    miss->ofproto->n_missed += miss->stats.n_packets;
 
     facet = facet_lookup_valid(miss->ofproto, &miss->flow);
     if (!facet) {
@@ -3502,107 +3370,12 @@ handle_flow_misses(struct dpif_backer *backer, struct flow_miss_batch *fmb)
     }
 }
 
-static void
-handle_sflow_upcall(struct dpif_backer *backer,
-                    const struct dpif_upcall *upcall)
-{
-    struct ofproto_dpif *ofproto;
-    union user_action_cookie cookie;
-    struct flow flow;
-    odp_port_t odp_in_port;
-
-    if (xlate_receive(backer, upcall->packet, upcall->key, upcall->key_len,
-                      &flow, NULL, &ofproto, &odp_in_port)
-        || !ofproto->sflow) {
-        return;
-    }
-
-    memset(&cookie, 0, sizeof cookie);
-    memcpy(&cookie, nl_attr_get(upcall->userdata), sizeof cookie.sflow);
-    dpif_sflow_received(ofproto->sflow, upcall->packet, &flow,
-                        odp_in_port, &cookie);
-}
-
-static void
-handle_flow_sample_upcall(struct dpif_backer *backer,
-                          const struct dpif_upcall *upcall)
-{
-    struct ofproto_dpif *ofproto;
-    union user_action_cookie cookie;
-    struct flow flow;
-
-    if (xlate_receive(backer, upcall->packet, upcall->key, upcall->key_len,
-                      &flow, NULL, &ofproto, NULL)
-        || !ofproto->ipfix) {
-        return;
-    }
-
-    memset(&cookie, 0, sizeof cookie);
-    memcpy(&cookie, nl_attr_get(upcall->userdata), sizeof cookie.flow_sample);
-
-    /* The flow reflects exactly the contents of the packet.  Sample
-     * the packet using it. */
-    dpif_ipfix_flow_sample(ofproto->ipfix, upcall->packet, &flow,
-                           cookie.flow_sample.collector_set_id,
-                           cookie.flow_sample.probability,
-                           cookie.flow_sample.obs_domain_id,
-                           cookie.flow_sample.obs_point_id);
-}
-
-static void
-handle_ipfix_upcall(struct dpif_backer *backer,
-                    const struct dpif_upcall *upcall)
-{
-    struct ofproto_dpif *ofproto;
-    struct flow flow;
-
-    if (xlate_receive(backer, upcall->packet, upcall->key, upcall->key_len,
-                      &flow, NULL, &ofproto, NULL)
-        || !ofproto->ipfix) {
-        return;
-    }
-
-    /* The flow reflects exactly the contents of the packet.  Sample
-     * the packet using it. */
-    dpif_ipfix_bridge_sample(ofproto->ipfix, upcall->packet, &flow);
-}
-
 static void
 handle_upcalls(struct dpif_backer *backer)
 {
     struct flow_miss_batch *fmb;
     int n_processed;
 
-    for (n_processed = 0; n_processed < FLOW_MISS_MAX_BATCH; n_processed++) {
-        struct upcall *upcall = upcall_next(backer->udpif);
-
-        if (!upcall) {
-            break;
-        }
-
-        switch (upcall->type) {
-        case SFLOW_UPCALL:
-            handle_sflow_upcall(backer, &upcall->dpif_upcall);
-            break;
-
-        case FLOW_SAMPLE_UPCALL:
-            handle_flow_sample_upcall(backer, &upcall->dpif_upcall);
-            break;
-
-        case IPFIX_UPCALL:
-            handle_ipfix_upcall(backer, &upcall->dpif_upcall);
-            break;
-
-        case BAD_UPCALL:
-            break;
-
-        case MISS_UPCALL:
-            NOT_REACHED();
-        }
-
-        upcall_destroy(upcall);
-    }
-
     for (n_processed = 0; n_processed < FLOW_MISS_MAX_BATCH; n_processed++) {
         struct drop_key *drop_key = drop_key_next(backer->udpif);
         if (!drop_key) {
@@ -3631,7 +3404,7 @@ handle_upcalls(struct dpif_backer *backer)
 
 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 rule_expire(struct rule_dpif *) OVS_REQUIRES(ofproto_mutex);
 static void expire_subfacets(struct dpif_backer *, int dp_max_idle);
 
 /* This function is called periodically by run().  Its job is to collect
@@ -3685,12 +3458,12 @@ expire(struct dpif_backer *backer)
 
         /* Expire OpenFlow flows whose idle_timeout or hard_timeout
          * has passed. */
-        ovs_mutex_lock(&ofproto->up.expirable_mutex);
+        ovs_mutex_lock(&ofproto_mutex);
         LIST_FOR_EACH_SAFE (rule, next_rule, expirable,
                             &ofproto->up.expirable) {
             rule_expire(rule_dpif_cast(rule));
         }
-        ovs_mutex_unlock(&ofproto->up.expirable_mutex);
+        ovs_mutex_unlock(&ofproto_mutex);
 
         /* All outstanding data in existing flows has been accounted, so it's a
          * good time to do bond rebalancing. */
@@ -3814,8 +3587,6 @@ update_stats(struct dpif_backer *backer)
         run_fast_rl();
     }
     dpif_flow_dump_done(&dump);
-
-    update_moving_averages(backer);
 }
 
 /* Calculates and returns the number of milliseconds of idle time after which
@@ -3856,7 +3627,7 @@ subfacet_max_idle(const struct dpif_backer *backer)
      * pass made by update_stats(), because the former function never looks at
      * uninstallable subfacets.
      */
-    enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) };
+    enum { BUCKET_WIDTH = 100 };
     enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
     int buckets[N_BUCKETS] = { 0 };
     int total, subtotal, bucket;
@@ -3951,35 +3722,29 @@ expire_subfacets(struct dpif_backer *backer, int dp_max_idle)
  * then delete it entirely. */
 static void
 rule_expire(struct rule_dpif *rule)
+    OVS_REQUIRES(ofproto_mutex)
 {
     uint16_t idle_timeout, hard_timeout;
-    long long int now;
-    uint8_t reason;
+    long long int now = time_msec();
+    int reason;
 
-    if (rule->up.pending) {
-        /* We'll have to expire it later. */
-        return;
-    }
+    ovs_assert(!rule->up.pending);
 
-    ovs_mutex_lock(&rule->up.timeout_mutex);
+    /* Has 'rule' expired? */
+    ovs_mutex_lock(&rule->up.mutex);
     hard_timeout = rule->up.hard_timeout;
     idle_timeout = rule->up.idle_timeout;
-    ovs_mutex_unlock(&rule->up.timeout_mutex);
-
-    /* Has 'rule' expired? */
-    now = time_msec();
     if (hard_timeout && now > rule->up.modified + hard_timeout * 1000) {
         reason = OFPRR_HARD_TIMEOUT;
     } else if (idle_timeout && now > rule->up.used + idle_timeout * 1000) {
         reason = OFPRR_IDLE_TIMEOUT;
     } else {
-        return;
+        reason = -1;
     }
+    ovs_mutex_unlock(&rule->up.mutex);
 
-    if (!ovs_rwlock_trywrlock(&rule->up.evict)) {
+    if (reason >= 0) {
         COVERAGE_INC(ofproto_dpif_expired);
-
-        /* Get rid of the rule. */
         ofproto_rule_expire(&rule->up, reason);
     }
 }
@@ -4004,6 +3769,7 @@ facet_create(const struct flow_miss *miss)
     struct facet *facet;
     struct match match;
 
+    COVERAGE_INC(facet_create);
     facet = xzalloc(sizeof *facet);
     facet->ofproto = miss->ofproto;
     facet->used = miss->stats.used;
@@ -4067,6 +3833,7 @@ facet_remove(struct facet *facet)
 {
     struct subfacet *subfacet, *next_subfacet;
 
+    COVERAGE_INC(facet_remove);
     ovs_assert(!list_is_empty(&facet->subfacets));
 
     /* First uninstall all of the subfacets to get final statistics. */
@@ -4173,17 +3940,22 @@ facet_is_controller_flow(struct facet *facet)
     if (facet) {
         struct ofproto_dpif *ofproto = facet->ofproto;
         const struct ofpact *ofpacts;
+        struct rule_actions *actions;
         struct rule_dpif *rule;
         size_t ofpacts_len;
         bool is_controller;
 
         rule_dpif_lookup(ofproto, &facet->flow, NULL, &rule);
-        ofpacts_len = rule->up.ofpacts_len;
-        ofpacts = rule->up.ofpacts;
+        actions = rule_dpif_get_actions(rule);
+        rule_dpif_unref(rule);
+
+        ofpacts_len = actions->ofpacts_len;
+        ofpacts = actions->ofpacts;
         is_controller = ofpacts_len > 0
             && ofpacts->type == OFPACT_CONTROLLER
             && ofpact_next(ofpacts) >= ofpact_end(ofpacts, ofpacts_len);
-        rule_release(rule);
+        rule_actions_unref(actions);
+
         return is_controller;
     }
     return false;
@@ -4269,15 +4041,11 @@ facet_check_consistency(struct facet *facet)
 
     struct xlate_out xout;
     struct xlate_in xin;
-
-    struct rule_dpif *rule;
     bool ok;
 
     /* Check the datapath actions for consistency. */
-    rule_dpif_lookup(facet->ofproto, &facet->flow, NULL, &rule);
-    xlate_in_init(&xin, facet->ofproto, &facet->flow, rule, 0, NULL);
+    xlate_in_init(&xin, facet->ofproto, &facet->flow, NULL, 0, NULL);
     xlate_actions(&xin, &xout);
-    rule_release(rule);
 
     ok = ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)
         && facet->xout.slow == xout.slow;
@@ -4375,7 +4143,7 @@ facet_revalidate(struct facet *facet)
         || memcmp(&facet->xout.wc, &xout.wc, sizeof xout.wc)) {
         facet_remove(facet);
         xlate_out_uninit(&xout);
-        rule_release(new_rule);
+        rule_dpif_unref(new_rule);
         return false;
     }
 
@@ -4404,10 +4172,13 @@ facet_revalidate(struct facet *facet)
     facet->xout.nf_output_iface = xout.nf_output_iface;
     facet->xout.mirrors = xout.mirrors;
     facet->nf_flow.output_iface = facet->xout.nf_output_iface;
+
+    ovs_mutex_lock(&new_rule->up.mutex);
     facet->used = MAX(facet->used, new_rule->up.created);
+    ovs_mutex_unlock(&new_rule->up.mutex);
 
     xlate_out_uninit(&xout);
-    rule_release(new_rule);
+    rule_dpif_unref(new_rule);
     return true;
 }
 
@@ -4426,7 +4197,6 @@ flow_push_stats(struct ofproto_dpif *ofproto, struct flow *flow,
                 struct dpif_flow_stats *stats, bool may_learn)
 {
     struct ofport_dpif *in_port;
-    struct rule_dpif *rule;
     struct xlate_in xin;
 
     in_port = get_ofp_port(ofproto, flow->in_port.ofp_port);
@@ -4434,13 +4204,10 @@ flow_push_stats(struct ofproto_dpif *ofproto, struct flow *flow,
         netdev_vport_inc_rx(in_port->up.netdev, stats);
     }
 
-    rule_dpif_lookup(ofproto, flow, NULL, &rule);
-    rule_credit_stats(rule, stats);
-    xlate_in_init(&xin, ofproto, flow, rule, stats->tcp_flags, NULL);
+    xlate_in_init(&xin, ofproto, flow, NULL, stats->tcp_flags, NULL);
     xin.resubmit_stats = stats;
     xin.may_learn = may_learn;
     xlate_actions_for_side_effects(&xin);
-    rule_release(rule);
 }
 
 static void
@@ -4506,14 +4273,44 @@ push_all_stats(void)
 }
 
 void
-rule_credit_stats(struct rule_dpif *rule, const struct dpif_flow_stats *stats)
+rule_dpif_credit_stats(struct rule_dpif *rule,
+                       const struct dpif_flow_stats *stats)
 {
     ovs_mutex_lock(&rule->stats_mutex);
     rule->packet_count += stats->n_packets;
     rule->byte_count += stats->n_bytes;
-    ofproto_rule_update_used(&rule->up, stats->used);
+    rule->up.used = MAX(rule->up.used, stats->used);
     ovs_mutex_unlock(&rule->stats_mutex);
 }
+
+bool
+rule_dpif_fail_open(const struct rule_dpif *rule)
+{
+    return rule->up.cr.priority == FAIL_OPEN_PRIORITY;
+}
+
+ovs_be64
+rule_dpif_get_flow_cookie(const struct rule_dpif *rule)
+    OVS_REQUIRES(rule->up.mutex)
+{
+    return rule->up.flow_cookie;
+}
+
+void
+rule_dpif_reduce_timeouts(struct rule_dpif *rule, uint16_t idle_timeout,
+                     uint16_t hard_timeout)
+{
+    ofproto_rule_reduce_timeouts(&rule->up, idle_timeout, hard_timeout);
+}
+
+/* Returns 'rule''s actions.  The caller owns a reference on the returned
+ * actions and must eventually release it (with rule_actions_unref()) to avoid
+ * a memory leak. */
+struct rule_actions *
+rule_dpif_get_actions(const struct rule_dpif *rule)
+{
+    return rule_get_actions(&rule->up);
+}
 \f
 /* Subfacets. */
 
@@ -4542,7 +4339,6 @@ static struct subfacet *
 subfacet_create(struct facet *facet, struct flow_miss *miss)
 {
     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;
     uint32_t key_hash;
@@ -4567,10 +4363,10 @@ subfacet_create(struct facet *facet, struct flow_miss *miss)
         subfacet = xmalloc(sizeof *subfacet);
     }
 
+    COVERAGE_INC(subfacet_create);
     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;
     subfacet->key = xmemdup(key, key_len);
     subfacet->key_len = key_len;
     subfacet->used = miss->stats.used;
@@ -4580,7 +4376,6 @@ subfacet_create(struct facet *facet, struct flow_miss *miss)
     subfacet->path = SF_NOT_INSTALLED;
     subfacet->backer = backer;
 
-    backer->subfacet_add_count++;
     return subfacet;
 }
 
@@ -4590,11 +4385,8 @@ static void
 subfacet_destroy__(struct subfacet *subfacet)
 {
     struct facet *facet = subfacet->facet;
-    struct ofproto_dpif *ofproto = facet->ofproto;
-
-    /* Update ofproto stats before uninstall the subfacet. */
-    ofproto->backer->subfacet_del_count++;
 
+    COVERAGE_INC(subfacet_destroy);
     subfacet_uninstall(subfacet);
     hmap_remove(&subfacet->backer->subfacets, &subfacet->hmap_node);
     list_remove(&subfacet->list_node);
@@ -4782,18 +4574,16 @@ rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow,
                      flow->in_port.ofp_port);
     }
 
-    *rule = choose_miss_rule(port ? port->up.pp.config : 0, ofproto->miss_rule,
-                             ofproto->no_packet_in_rule);
-    ovs_rwlock_rdlock(&(*rule)->up.evict);
+    choose_miss_rule(port ? port->up.pp.config : 0, ofproto->miss_rule,
+                     ofproto->no_packet_in_rule, rule);
 }
 
 bool
 rule_dpif_lookup_in_table(struct ofproto_dpif *ofproto,
                           const struct flow *flow, struct flow_wildcards *wc,
                           uint8_t table_id, struct rule_dpif **rule)
-    OVS_TRY_RDLOCK(true, (*rule)->up.evict)
 {
-    struct cls_rule *cls_rule;
+    const struct cls_rule *cls_rule;
     struct classifier *cls;
     bool frag;
 
@@ -4826,11 +4616,7 @@ rule_dpif_lookup_in_table(struct ofproto_dpif *ofproto,
     }
 
     *rule = rule_dpif_cast(rule_from_cls_rule(cls_rule));
-    if (*rule && ovs_rwlock_tryrdlock(&(*rule)->up.evict)) {
-        /* The rule is in the process of being removed.  Best we can do is
-         * pretend it isn't there. */
-        *rule = NULL;
-    }
+    rule_dpif_ref(*rule);
     ovs_rwlock_unlock(&cls->rwlock);
 
     return *rule != NULL;
@@ -4839,35 +4625,43 @@ rule_dpif_lookup_in_table(struct ofproto_dpif *ofproto,
 /* Given a port configuration (specified as zero if there's no port), chooses
  * which of 'miss_rule' and 'no_packet_in_rule' should be used in case of a
  * flow table miss. */
-struct rule_dpif *
+void
 choose_miss_rule(enum ofputil_port_config config, struct rule_dpif *miss_rule,
-                 struct rule_dpif *no_packet_in_rule)
+                 struct rule_dpif *no_packet_in_rule, struct rule_dpif **rule)
 {
-    return config & OFPUTIL_PC_NO_PACKET_IN ? no_packet_in_rule : miss_rule;
+    *rule = config & OFPUTIL_PC_NO_PACKET_IN ? no_packet_in_rule : miss_rule;
+    rule_dpif_ref(*rule);
+}
+
+void
+rule_dpif_ref(struct rule_dpif *rule)
+{
+    if (rule) {
+        ofproto_rule_ref(&rule->up);
+    }
 }
 
 void
-rule_release(struct rule_dpif *rule)
-    OVS_NO_THREAD_SAFETY_ANALYSIS
+rule_dpif_unref(struct rule_dpif *rule)
 {
     if (rule) {
-        ovs_rwlock_unlock(&rule->up.evict);
+        ofproto_rule_unref(&rule->up);
     }
 }
 
 static void
 complete_operation(struct rule_dpif *rule)
+    OVS_REQUIRES(ofproto_mutex)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
 
     ofproto->backer->need_revalidate = REV_FLOW_TABLE;
-    if (clogged) {
-        struct dpif_completion *c = xmalloc(sizeof *c);
-        c->op = rule->up.pending;
-        list_push_back(&ofproto->completions, &c->list_node);
-    } else {
-        ofoperation_complete(rule->up.pending, 0);
-    }
+    ofoperation_complete(rule->up.pending, 0);
+}
+
+static struct rule_dpif *rule_dpif_cast(const struct rule *rule)
+{
+    return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
 }
 
 static struct rule *
@@ -4893,15 +4687,29 @@ rule_construct(struct rule *rule_)
     rule->packet_count = 0;
     rule->byte_count = 0;
     ovs_mutex_unlock(&rule->stats_mutex);
-    complete_operation(rule);
     return 0;
 }
 
 static void
-rule_destruct(struct rule *rule_)
+rule_insert(struct rule *rule_)
+    OVS_REQUIRES(ofproto_mutex)
+{
+    struct rule_dpif *rule = rule_dpif_cast(rule_);
+    complete_operation(rule);
+}
+
+static void
+rule_delete(struct rule *rule_)
+    OVS_REQUIRES(ofproto_mutex)
 {
     struct rule_dpif *rule = rule_dpif_cast(rule_);
     complete_operation(rule);
+}
+
+static void
+rule_destruct(struct rule *rule_)
+{
+    struct rule_dpif *rule = rule_dpif_cast(rule_);
     ovs_mutex_destroy(&rule->stats_mutex);
 }
 
@@ -4934,7 +4742,7 @@ rule_dpif_execute(struct rule_dpif *rule, const struct flow *flow,
     struct xlate_in xin;
 
     dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
-    rule_credit_stats(rule, &stats);
+    rule_dpif_credit_stats(rule, &stats);
 
     xlate_in_init(&xin, ofproto, flow, rule, stats.tcp_flags, packet);
     xin.resubmit_stats = &stats;
@@ -4956,65 +4764,36 @@ rule_execute(struct rule *rule, const struct flow *flow,
 }
 
 static void
-rule_modify_actions(struct rule *rule_)
+rule_modify_actions(struct rule *rule_, bool reset_counters)
+    OVS_REQUIRES(ofproto_mutex)
 {
     struct rule_dpif *rule = rule_dpif_cast(rule_);
 
+    if (reset_counters) {
+        ovs_mutex_lock(&rule->stats_mutex);
+        rule->packet_count = 0;
+        rule->byte_count = 0;
+        ovs_mutex_unlock(&rule->stats_mutex);
+    }
+
     complete_operation(rule);
 }
 \f
 /* Sends 'packet' out 'ofport'.
  * May modify 'packet'.
  * Returns 0 if successful, otherwise a positive errno value. */
-static int
-send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
+int
+ofproto_dpif_send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
-    uint64_t odp_actions_stub[1024 / 8];
-    struct ofpbuf key, odp_actions;
-    struct dpif_flow_stats stats;
-    struct odputil_keybuf keybuf;
-    struct ofpact_output output;
-    struct xlate_out xout;
-    struct xlate_in xin;
-    struct flow flow;
-    union flow_in_port in_port_;
     int error;
 
-    ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
-    ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
-
-    /* Use OFPP_NONE as the in_port to avoid special packet processing. */
-    in_port_.ofp_port = OFPP_NONE;
-    flow_extract(packet, 0, 0, NULL, &in_port_, &flow);
-    odp_flow_key_from_flow(&key, &flow, ofp_port_to_odp_port(ofproto,
-                                                             OFPP_LOCAL));
-    dpif_flow_stats_extract(&flow, packet, time_msec(), &stats);
-
-    ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output);
-    output.port = ofport->up.ofp_port;
-    output.max_len = 0;
-
-    xlate_in_init(&xin, ofproto, &flow, NULL, 0, packet);
-    xin.ofpacts_len = sizeof output;
-    xin.ofpacts = &output.ofpact;
-    xin.resubmit_stats = &stats;
-    xlate_actions(&xin, &xout);
-
-    error = dpif_execute(ofproto->backer->dpif,
-                         key.data, key.size,
-                         xout.odp_actions.data, xout.odp_actions.size,
-                         packet);
-    xlate_out_uninit(&xout);
-
-    if (error) {
-        VLOG_WARN_RL(&rl, "%s: failed to send packet on port %s (%s)",
-                     ofproto->up.name, netdev_get_name(ofport->up.netdev),
-                     ovs_strerror(error));
-    }
+    error = xlate_send_packet(ofport, packet);
 
+    ovs_mutex_lock(&ofproto->stats_mutex);
     ofproto->stats.tx_packets++;
     ofproto->stats.tx_bytes += packet->size;
+    ovs_mutex_unlock(&ofproto->stats_mutex);
     return error;
 }
 
@@ -5264,21 +5043,32 @@ struct trace_ctx {
 static void
 trace_format_rule(struct ds *result, int level, const struct rule_dpif *rule)
 {
+    struct rule_actions *actions;
+    ovs_be64 cookie;
+
     ds_put_char_multiple(result, '\t', level);
     if (!rule) {
         ds_put_cstr(result, "No match\n");
         return;
     }
 
+    ovs_mutex_lock(&rule->up.mutex);
+    cookie = rule->up.flow_cookie;
+    ovs_mutex_unlock(&rule->up.mutex);
+
     ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ",
-                  rule ? rule->up.table_id : 0, ntohll(rule->up.flow_cookie));
+                  rule ? rule->up.table_id : 0, ntohll(cookie));
     cls_rule_format(&rule->up.cr, result);
     ds_put_char(result, '\n');
 
+    actions = rule_dpif_get_actions(rule);
+
     ds_put_char_multiple(result, '\t', level);
     ds_put_cstr(result, "OpenFlow ");
-    ofpacts_format(rule->up.ofpacts, rule->up.ofpacts_len, result);
+    ofpacts_format(actions->ofpacts, actions->ofpacts_len, result);
     ds_put_char(result, '\n');
+
+    rule_actions_unref(actions);
 }
 
 static void
@@ -5350,12 +5140,13 @@ static void
 ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
                       void *aux OVS_UNUSED)
 {
-    const struct dpif_backer *backer;
+    const struct dpif_backer *backer = NULL;
     struct ofproto_dpif *ofproto;
     struct ofpbuf odp_key, odp_mask;
     struct ofpbuf *packet;
     struct ds result;
     struct flow flow;
+    struct simap port_names;
     char *s;
 
     packet = NULL;
@@ -5363,6 +5154,7 @@ ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
     ds_init(&result);
     ofpbuf_init(&odp_key, 0);
     ofpbuf_init(&odp_mask, 0);
+    simap_init(&port_names);
 
     /* Handle "-generate" or a hex string as the last argument. */
     if (!strcmp(argv[argc - 1], "-generate")) {
@@ -5379,37 +5171,42 @@ ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
         }
     }
 
+    /* odp_flow can have its in_port specified as a name instead of port no.
+     * We do not yet know whether a given flow is a odp_flow or a br_flow.
+     * But, to know whether a flow is odp_flow through odp_flow_from_string(),
+     * we need to create a simap of name to port no. */
+    if (argc == 3) {
+        const char *dp_type;
+        if (!strncmp(argv[1], "ovs-", 4)) {
+            dp_type = argv[1] + 4;
+        } else {
+            dp_type = argv[1];
+        }
+        backer = shash_find_data(&all_dpif_backers, dp_type);
+    } else {
+        struct shash_node *node;
+        if (shash_count(&all_dpif_backers) == 1) {
+            node = shash_first(&all_dpif_backers);
+            backer = node->data;
+        }
+    }
+    if (backer && backer->dpif) {
+        struct dpif_port dpif_port;
+        struct dpif_port_dump port_dump;
+        DPIF_PORT_FOR_EACH (&dpif_port, &port_dump, backer->dpif) {
+            simap_put(&port_names, dpif_port.name,
+                      odp_to_u32(dpif_port.port_no));
+        }
+    }
+
     /* Parse the flow and determine whether a datapath or
      * bridge is specified. If function odp_flow_key_from_string()
      * returns 0, the flow is a odp_flow. If function
      * parse_ofp_exact_flow() returns 0, the flow is a br_flow. */
-    if (!odp_flow_from_string(argv[argc - 1], NULL, &odp_key, &odp_mask)) {
-        /* If the odp_flow is the second argument,
-         * the datapath name is the first argument. */
-        if (argc == 3) {
-            const char *dp_type;
-            if (!strncmp(argv[1], "ovs-", 4)) {
-                dp_type = argv[1] + 4;
-            } else {
-                dp_type = argv[1];
-            }
-            backer = shash_find_data(&all_dpif_backers, dp_type);
-            if (!backer) {
-                unixctl_command_reply_error(conn, "Cannot find datapath "
-                               "of this name");
-                goto exit;
-            }
-        } else {
-            /* No datapath name specified, so there should be only one
-             * datapath. */
-            struct shash_node *node;
-            if (shash_count(&all_dpif_backers) != 1) {
-                unixctl_command_reply_error(conn, "Must specify datapath "
-                         "name, there is more than one type of datapath");
-                goto exit;
-            }
-            node = shash_first(&all_dpif_backers);
-            backer = node->data;
+    if (!odp_flow_from_string(argv[argc - 1], &port_names, &odp_key, &odp_mask)) {
+        if (!backer) {
+            unixctl_command_reply_error(conn, "Cannot find the datapath");
+            goto exit;
         }
 
         if (xlate_receive(backer, NULL, odp_key.data, odp_key.size, &flow,
@@ -5462,6 +5259,7 @@ exit:
     ofpbuf_delete(packet);
     ofpbuf_uninit(&odp_key);
     ofpbuf_uninit(&odp_mask);
+    simap_destroy(&port_names);
 }
 
 static void
@@ -5548,23 +5346,7 @@ ofproto_trace(struct ofproto_dpif *ofproto, const struct flow *flow,
         xlate_out_uninit(&trace.xout);
     }
 
-    rule_release(rule);
-}
-
-static void
-ofproto_dpif_clog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
-                  const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
-{
-    clogged = true;
-    unixctl_command_reply(conn, NULL);
-}
-
-static void
-ofproto_dpif_unclog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
-                    const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
-{
-    clogged = false;
-    unixctl_command_reply(conn, NULL);
+    rule_dpif_unref(rule);
 }
 
 /* Runs a self-check of flow translations in 'ofproto'.  Appends a message to
@@ -5662,14 +5444,6 @@ ofproto_unixctl_dpif_dump_dps(struct unixctl_conn *conn, int argc OVS_UNUSED,
     ds_destroy(&ds);
 }
 
-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
 dpif_show_backer(const struct dpif_backer *backer, struct ds *ds)
 {
@@ -5677,7 +5451,6 @@ dpif_show_backer(const struct dpif_backer *backer, struct ds *ds)
     struct ofproto_dpif *ofproto;
     struct shash ofproto_shash;
     uint64_t n_hit, n_missed;
-    long long int minutes;
     size_t i;
 
     n_hit = n_missed = 0;
@@ -5695,15 +5468,6 @@ dpif_show_backer(const struct dpif_backer *backer, struct ds *ds)
                   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, "\thourly avg:", &backer->hourly);
-    }
-    if (minutes >= 60 * 24) {
-        show_dp_rates(ds, "\tdaily avg:",  &backer->daily);
-    }
-    show_dp_rates(ds, "\toverall avg:",  &backer->lifetime);
-
     shash_init(&ofproto_shash);
     ofprotos = get_ofprotos(&ofproto_shash);
     for (i = 0; i < shash_count(&ofproto_shash); i++) {
@@ -5910,7 +5674,7 @@ ofproto_unixctl_dpif_dump_flows(struct unixctl_conn *conn,
         }
 
         odp_flow_format(subfacet->key, subfacet->key_len,
-                        mask.data, mask.size, &ds, false);
+                        mask.data, mask.size, NULL, &ds, false);
 
         ds_put_format(&ds, ", packets:%"PRIu64", bytes:%"PRIu64", used:",
                       subfacet->dp_packet_count, subfacet->dp_byte_count);
@@ -5983,10 +5747,6 @@ ofproto_dpif_unixctl_init(void)
                              ofproto_unixctl_fdb_flush, NULL);
     unixctl_command_register("fdb/show", "bridge", 1, 1,
                              ofproto_unixctl_fdb_show, NULL);
-    unixctl_command_register("ofproto/clog", "", 0, 0,
-                             ofproto_dpif_clog, NULL);
-    unixctl_command_register("ofproto/unclog", "", 0, 0,
-                             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,
@@ -6260,51 +6020,6 @@ odp_port_to_ofp_port(const struct ofproto_dpif *ofproto, odp_port_t odp_port)
     }
 }
 
-/* Compute exponentially weighted moving average, adding 'new' as the newest,
- * most heavily weighted element.  'base' designates the rate of decay: after
- * 'base' further updates, 'new''s weight in the EWMA decays to about 1/e
- * (about .37). */
-static void
-exp_mavg(double *avg, int base, double new)
-{
-    *avg = (*avg * (base - 1) + new) / base;
-}
-
-static void
-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() - 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 ((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);
-        }
-
-        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;
-    }
-}
-
 const struct ofproto_class ofproto_dpif_class = {
     init,
     enumerate_types,
@@ -6344,6 +6059,8 @@ const struct ofproto_class ofproto_dpif_class = {
     NULL,                       /* rule_choose_table */
     rule_alloc,
     rule_construct,
+    rule_insert,
+    rule_delete,
     rule_destruct,
     rule_dealloc,
     rule_get_stats,
@@ -6377,4 +6094,10 @@ const struct ofproto_class ofproto_dpif_class = {
     NULL,                       /* meter_set */
     NULL,                       /* meter_get */
     NULL,                       /* meter_del */
+    NULL,                       /* group_alloc */
+    NULL,                       /* group_construct */
+    NULL,                       /* group_destruct */
+    NULL,                       /* group_dealloc */
+    NULL,                       /* group_modify */
+    NULL,                       /* group_get_stats */
 };