datapath-windows: Update OVS_SWITCH_CONTEXT: external and internal port
[cascardo/ovs.git] / ofproto / ofproto.c
index e5de16e..2cb93b0 100644 (file)
@@ -304,6 +304,8 @@ unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT;
 unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT;
 
 size_t n_handlers, n_revalidators;
+size_t n_dpdk_rxqs;
+char *pmd_cpu_mask;
 
 /* Map from datapath name to struct ofproto, for use by unixctl commands. */
 static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos);
@@ -524,33 +526,16 @@ ofproto_create(const char *datapath_name, const char *datapath_type,
     ovs_mutex_unlock(&ofproto_mutex);
     ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS |
                                 OFPGFC_SELECT_WEIGHT;
-    ofproto->ogf.max_groups[OFPGT11_ALL] = OFPG_MAX;
-    ofproto->ogf.max_groups[OFPGT11_SELECT] = OFPG_MAX;
-    ofproto->ogf.max_groups[OFPGT11_INDIRECT] = OFPG_MAX;
-    ofproto->ogf.max_groups[OFPGT11_FF] = OFPG_MAX;
-    ofproto->ogf.actions[0] =
-        (1 << OFPAT11_OUTPUT) |
-        (1 << OFPAT11_COPY_TTL_OUT) |
-        (1 << OFPAT11_COPY_TTL_IN) |
-        (1 << OFPAT11_SET_MPLS_TTL) |
-        (1 << OFPAT11_DEC_MPLS_TTL) |
-        (1 << OFPAT11_PUSH_VLAN) |
-        (1 << OFPAT11_POP_VLAN) |
-        (1 << OFPAT11_PUSH_MPLS) |
-        (1 << OFPAT11_POP_MPLS) |
-        (1 << OFPAT11_SET_QUEUE) |
-        (1 << OFPAT11_GROUP) |
-        (1 << OFPAT11_SET_NW_TTL) |
-        (1 << OFPAT11_DEC_NW_TTL) |
-        (1 << OFPAT12_SET_FIELD);
-/* not supported:
- *      (1 << OFPAT13_PUSH_PBB) |
- *      (1 << OFPAT13_POP_PBB) */
+    for (i = 0; i < 4; i++) {
+        ofproto->ogf.max_groups[i] = OFPG_MAX;
+        ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1;
+    }
 
     error = ofproto->ofproto_class->construct(ofproto);
     if (error) {
         VLOG_ERR("failed to open datapath %s: %s",
                  datapath_name, ovs_strerror(error));
+        connmgr_destroy(ofproto->connmgr);
         ofproto_destroy__(ofproto);
         return error;
     }
@@ -721,6 +706,47 @@ ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time,
     }
 }
 
+/* Multicast snooping configuration. */
+
+/* Configures multicast snooping on 'ofproto' using the settings
+ * defined in 's'.  If 's' is NULL, disables multicast snooping.
+ *
+ * Returns 0 if successful, otherwise a positive errno value. */
+int
+ofproto_set_mcast_snooping(struct ofproto *ofproto,
+                           const struct ofproto_mcast_snooping_settings *s)
+{
+    return (ofproto->ofproto_class->set_mcast_snooping
+            ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s)
+            : EOPNOTSUPP);
+}
+
+/* Configures multicast snooping flood setting on 'ofp_port' of 'ofproto'.
+ *
+ * Returns 0 if successful, otherwise a positive errno value.*/
+int
+ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux, bool flood)
+{
+    return (ofproto->ofproto_class->set_mcast_snooping_port
+            ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux,
+                                                              flood)
+            : EOPNOTSUPP);
+}
+
+void
+ofproto_set_n_dpdk_rxqs(int n_rxqs)
+{
+    n_dpdk_rxqs = MAX(n_rxqs, 0);
+}
+
+void
+ofproto_set_cpu_mask(const char *cmask)
+{
+    free(pmd_cpu_mask);
+
+    pmd_cpu_mask = cmask ? xstrdup(cmask) : NULL;
+}
+
 void
 ofproto_set_threads(int n_handlers_, int n_revalidators_)
 {
@@ -902,6 +928,87 @@ ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port,
             ? ofproto->ofproto_class->get_stp_port_stats(ofport, s)
             : EOPNOTSUPP);
 }
+
+/* Rapid Spanning Tree Protocol (RSTP) configuration. */
+
+/* Configures RSTP on 'ofproto' using the settings defined in 's'.  If
+ * 's' is NULL, disables RSTP.
+ *
+ * Returns 0 if successful, otherwise a positive errno value. */
+int
+ofproto_set_rstp(struct ofproto *ofproto,
+                 const struct ofproto_rstp_settings *s)
+{
+    if (!ofproto->ofproto_class->set_rstp) {
+        return EOPNOTSUPP;
+    }
+    ofproto->ofproto_class->set_rstp(ofproto, s);
+    return 0;
+}
+
+/* Retrieves RSTP status of 'ofproto' and stores it in 's'.  If the
+ * 'enabled' member of 's' is false, then the other members are not
+ * meaningful.
+ *
+ * Returns 0 if successful, otherwise a positive errno value. */
+int
+ofproto_get_rstp_status(struct ofproto *ofproto,
+                        struct ofproto_rstp_status *s)
+{
+    if (!ofproto->ofproto_class->get_rstp_status) {
+        return EOPNOTSUPP;
+    }
+    ofproto->ofproto_class->get_rstp_status(ofproto, s);
+    return 0;
+}
+
+/* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined
+ * in 's'.  The caller is responsible for assigning RSTP port numbers
+ * (using the 'port_num' member in the range of 1 through 255, inclusive)
+ * and ensuring there are no duplicates.  If the 's' is NULL, then RSTP
+ * is disabled on the port.
+ *
+ * Returns 0 if successful, otherwise a positive errno value.*/
+int
+ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port,
+                      const struct ofproto_port_rstp_settings *s)
+{
+    struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
+    if (!ofport) {
+        VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16,
+                ofproto->name, ofp_port);
+        return ENODEV;
+    }
+
+    if (!ofproto->ofproto_class->set_rstp_port) {
+        return  EOPNOTSUPP;
+    }
+    ofproto->ofproto_class->set_rstp_port(ofport, s);
+    return 0;
+}
+
+/* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in
+ * 's'.  If the 'enabled' member in 's' is false, then the other members
+ * are not meaningful.
+ *
+ * Returns 0 if successful, otherwise a positive errno value.*/
+int
+ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port,
+                             struct ofproto_port_rstp_status *s)
+{
+    struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
+    if (!ofport) {
+        VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent "
+                "port %"PRIu16, ofproto->name, ofp_port);
+        return ENODEV;
+    }
+
+    if (!ofproto->ofproto_class->get_rstp_port_status) {
+        return  EOPNOTSUPP;
+    }
+    ofproto->ofproto_class->get_rstp_port_status(ofport, s);
+    return 0;
+}
 \f
 /* Queue DSCP configuration. */
 
@@ -1187,10 +1294,11 @@ ofproto_configure_table(struct ofproto *ofproto, int table_id,
     }
 
     table->max_flows = s->max_flows;
-    fat_rwlock_wrlock(&table->cls.rwlock);
-    classifier_set_prefix_fields(&table->cls,
-                                 s->prefix_fields, s->n_prefix_fields);
-    fat_rwlock_unlock(&table->cls.rwlock);
+
+    if (classifier_set_prefix_fields(&table->cls,
+                                     s->prefix_fields, s->n_prefix_fields)) {
+        /* XXX: Trigger revalidation. */
+    }
 
     ovs_mutex_lock(&ofproto_mutex);
     evict_rules_from_table(table, 0);
@@ -1255,17 +1363,13 @@ ofproto_flush__(struct ofproto *ofproto)
 
     ovs_mutex_lock(&ofproto_mutex);
     OFPROTO_FOR_EACH_TABLE (table, ofproto) {
-        struct rule *rule, *next_rule;
-        struct cls_cursor cursor;
+        struct rule *rule;
 
         if (table->flags & OFTABLE_HIDDEN) {
             continue;
         }
 
-        fat_rwlock_rdlock(&table->cls.rwlock);
-        cls_cursor_init(&cursor, &table->cls, NULL);
-        fat_rwlock_unlock(&table->cls.rwlock);
-        CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
+        CLS_FOR_EACH_SAFE (rule, cr, &table->cls) {
             ofproto_rule_delete__(rule, OFPRR_DELETE);
         }
     }
@@ -1287,8 +1391,6 @@ ofproto_destroy__(struct ofproto *ofproto)
     ovs_rwlock_destroy(&ofproto->groups_rwlock);
     hmap_destroy(&ofproto->groups);
 
-    connmgr_destroy(ofproto->connmgr);
-
     hmap_remove(&all_ofprotos, &ofproto->hmap_node);
     free(ofproto->name);
     free(ofproto->type);
@@ -1347,6 +1449,12 @@ ofproto_destroy(struct ofproto *p)
     }
 
     p->ofproto_class->destruct(p);
+
+    /* We should not postpone this because it involves deleting a listening
+     * socket which we may want to reopen soon. 'connmgr' should not be used
+     * by other threads */
+    connmgr_destroy(p->connmgr);
+
     /* Destroying rules is deferred, must have 'ofproto' around for them. */
     ovsrcu_postpone(ofproto_destroy__, p);
 }
@@ -1429,17 +1537,22 @@ ofproto_run(struct ofproto *p)
         for (i = 0; i < p->n_tables; i++) {
             struct oftable *table = &p->tables[i];
             struct eviction_group *evg;
-            struct cls_cursor cursor;
             struct rule *rule;
 
             if (!table->eviction_fields) {
                 continue;
             }
 
+            if (classifier_count(&table->cls) > 100000) {
+                static struct vlog_rate_limit count_rl =
+                    VLOG_RATE_LIMIT_INIT(1, 1);
+                VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive"
+                             " number of rules: %d", i,
+                             classifier_count(&table->cls));
+            }
+
             ovs_mutex_lock(&ofproto_mutex);
-            fat_rwlock_rdlock(&table->cls.rwlock);
-            cls_cursor_init(&cursor, &table->cls, NULL);
-            CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
+            CLS_FOR_EACH (rule, cr, &table->cls) {
                 if (rule->idle_timeout || rule->hard_timeout) {
                     if (!rule->eviction_group) {
                         eviction_group_add_rule(rule);
@@ -1449,7 +1562,6 @@ ofproto_run(struct ofproto *p)
                     }
                 }
             }
-            fat_rwlock_unlock(&table->cls.rwlock);
 
             HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
                 heap_rebuild(&evg->rules);
@@ -1530,9 +1642,7 @@ ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage)
 
     n_rules = 0;
     OFPROTO_FOR_EACH_TABLE (table, ofproto) {
-        fat_rwlock_rdlock(&table->cls.rwlock);
         n_rules += classifier_count(&table->cls);
-        fat_rwlock_unlock(&table->cls.rwlock);
     }
     simap_increase(usage, "rules", n_rules);
 
@@ -1820,7 +1930,6 @@ ofproto_add_flow(struct ofproto *ofproto, const struct match *match,
 
     /* First do a cheap check whether the rule we're looking for already exists
      * with the actions that we want.  If it does, then we're done. */
-    fat_rwlock_rdlock(&ofproto->tables[0].cls.rwlock);
     rule = rule_from_cls_rule(classifier_find_match_exactly(
                                   &ofproto->tables[0].cls, match, priority));
     if (rule) {
@@ -1830,7 +1939,6 @@ ofproto_add_flow(struct ofproto *ofproto, const struct match *match,
     } else {
         must_add = true;
     }
-    fat_rwlock_unlock(&ofproto->tables[0].cls.rwlock);
 
     /* If there's no such rule or the rule doesn't have the actions we want,
      * fall back to a executing a full flow mod.  We can't optimize this at
@@ -1861,7 +1969,6 @@ ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm)
         struct rule *rule;
         bool done = false;
 
-        fat_rwlock_rdlock(&table->cls.rwlock);
         rule = rule_from_cls_rule(classifier_find_match_exactly(&table->cls,
                                                                 &fm->match,
                                                                 fm->priority));
@@ -1886,7 +1993,6 @@ ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm)
             }
             ovs_mutex_unlock(&rule->mutex);
         }
-        fat_rwlock_unlock(&table->cls.rwlock);
 
         if (done) {
             return 0;
@@ -1910,10 +2016,8 @@ ofproto_delete_flow(struct ofproto *ofproto,
 
     /* First do a cheap check whether the rule we're looking for has already
      * been deleted.  If so, then we're done. */
-    fat_rwlock_rdlock(&cls->rwlock);
     rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target,
                                                             priority));
-    fat_rwlock_unlock(&cls->rwlock);
     if (!rule) {
         return;
     }
@@ -2197,6 +2301,9 @@ ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port)
         if (port->ofproto->ofproto_class->set_stp_port) {
             port->ofproto->ofproto_class->set_stp_port(port, NULL);
         }
+        if (port->ofproto->ofproto_class->set_rstp_port) {
+            port->ofproto->ofproto_class->set_rstp_port(port, NULL);
+        }
         if (port->ofproto->ofproto_class->set_cfm) {
             port->ofproto->ofproto_class->set_cfm(port, NULL);
         }
@@ -2509,6 +2616,15 @@ ofproto_rule_ref(struct rule *rule)
     }
 }
 
+bool
+ofproto_rule_try_ref(struct rule *rule)
+{
+    if (rule) {
+        return ovs_refcount_try_ref_rcu(&rule->ref_count);
+    }
+    return false;
+}
+
 /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the
  * ref_count reaches 0.
  *
@@ -2518,7 +2634,7 @@ ofproto_rule_ref(struct rule *rule)
 void
 ofproto_rule_unref(struct rule *rule)
 {
-    if (rule && ovs_refcount_unref(&rule->ref_count) == 1) {
+    if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) {
         ovsrcu_postpone(rule_destroy_cb, rule);
     }
 }
@@ -2573,7 +2689,7 @@ rule_actions_destroy(const struct rule_actions *actions)
 
 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
  * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */
-static bool
+bool
 ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port)
     OVS_REQUIRES(ofproto_mutex)
 {
@@ -2774,6 +2890,98 @@ handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
     return 0;
 }
 
+static void
+query_tables(struct ofproto *ofproto,
+             struct ofputil_table_features **featuresp,
+             struct ofputil_table_stats **statsp)
+{
+    struct mf_bitmap rw_fields = oxm_writable_fields();
+    struct mf_bitmap match = oxm_matchable_fields();
+    struct mf_bitmap mask = oxm_maskable_fields();
+
+    struct ofputil_table_features *features;
+    struct ofputil_table_stats *stats;
+    int i;
+
+    features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features);
+    for (i = 0; i < ofproto->n_tables; i++) {
+        struct ofputil_table_features *f = &features[i];
+
+        f->table_id = i;
+        sprintf(f->name, "table%d", i);
+        f->metadata_match = OVS_BE64_MAX;
+        f->metadata_write = OVS_BE64_MAX;
+        atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config);
+        f->max_entries = 1000000;
+
+        bitmap_set_multiple(f->nonmiss.next, i + 1,
+                            ofproto->n_tables - (i + 1), true);
+        f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1;
+        if (i == ofproto->n_tables - 1) {
+            f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE);
+        }
+        f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1;
+        f->nonmiss.write.set_fields = rw_fields;
+        f->nonmiss.apply = f->nonmiss.write;
+        f->miss = f->nonmiss;
+
+        f->match = match;
+        f->mask = mask;
+        f->wildcard = match;
+    }
+
+    if (statsp) {
+        stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats);
+        for (i = 0; i < ofproto->n_tables; i++) {
+            struct ofputil_table_stats *s = &stats[i];
+            struct classifier *cls = &ofproto->tables[i].cls;
+
+            s->table_id = i;
+            s->active_count = classifier_count(cls);
+        }
+    } else {
+        stats = NULL;
+    }
+
+    ofproto->ofproto_class->query_tables(ofproto, features, stats);
+
+    for (i = 0; i < ofproto->n_tables; i++) {
+        const struct oftable *table = &ofproto->tables[i];
+        struct ofputil_table_features *f = &features[i];
+
+        if (table->name) {
+            ovs_strzcpy(f->name, table->name, sizeof f->name);
+        }
+
+        if (table->max_flows < f->max_entries) {
+            f->max_entries = table->max_flows;
+        }
+    }
+}
+
+static void
+query_switch_features(struct ofproto *ofproto,
+                      bool *arp_match_ip, uint64_t *ofpacts)
+{
+    struct ofputil_table_features *features, *f;
+
+    *arp_match_ip = false;
+    *ofpacts = 0;
+
+    query_tables(ofproto, &features, NULL);
+    for (f = features; f < &features[ofproto->n_tables]; f++) {
+        *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts;
+        if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) ||
+            bitmap_is_set(f->match.bm, MFF_ARP_TPA)) {
+            *arp_match_ip = true;
+        }
+    }
+    free(features);
+
+    /* Sanity check. */
+    ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT));
+}
+
 static enum ofperr
 handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
 {
@@ -2783,9 +2991,7 @@ handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
     bool arp_match_ip;
     struct ofpbuf *b;
 
-    ofproto->ofproto_class->get_features(ofproto, &arp_match_ip,
-                                         &features.actions);
-    ovs_assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */
+    query_switch_features(ofproto, &arp_match_ip, &features.ofpacts);
 
     features.datapath_id = ofproto->datapath_id;
     features.n_buffers = pktbuf_capacity();
@@ -3060,63 +3266,55 @@ static enum ofperr
 handle_table_stats_request(struct ofconn *ofconn,
                            const struct ofp_header *request)
 {
-    struct ofproto *p = ofconn_get_ofproto(ofconn);
-    struct ofp12_table_stats *ots;
-    struct ofpbuf *msg;
-    int n_tables;
+    struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
+    struct ofputil_table_features *features;
+    struct ofputil_table_stats *stats;
+    struct ofpbuf *reply;
     size_t i;
 
-    /* Set up default values.
-     *
-     * ofp12_table_stats is used as a generic structure as
-     * it is able to hold all the fields for ofp10_table_stats
-     * and ofp11_table_stats (and of course itself).
-     */
-    ots = xcalloc(p->n_tables, sizeof *ots);
-    for (i = 0; i < p->n_tables; i++) {
-        ots[i].table_id = i;
-        sprintf(ots[i].name, "table%"PRIuSIZE, i);
-        ots[i].match = htonll(OFPXMT13_MASK);
-        ots[i].wildcards = htonll(OFPXMT13_MASK);
-        ots[i].write_actions = htonl(OFPAT11_OUTPUT);
-        ots[i].apply_actions = htonl(OFPAT11_OUTPUT);
-        ots[i].write_setfields = htonll(OFPXMT13_MASK);
-        ots[i].apply_setfields = htonll(OFPXMT13_MASK);
-        ots[i].metadata_match = OVS_BE64_MAX;
-        ots[i].metadata_write = OVS_BE64_MAX;
-        ots[i].instructions = htonl(OFPIT11_ALL);
-        ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK);
-        ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */
-        fat_rwlock_rdlock(&p->tables[i].cls.rwlock);
-        ots[i].active_count = htonl(classifier_count(&p->tables[i].cls));
-        fat_rwlock_unlock(&p->tables[i].cls.rwlock);
-    }
-
-    p->ofproto_class->get_tables(p, ots);
-
-    /* Post-process the tables, dropping hidden tables. */
-    n_tables = p->n_tables;
-    for (i = 0; i < p->n_tables; i++) {
-        const struct oftable *table = &p->tables[i];
+    query_tables(ofproto, &features, &stats);
 
-        if (table->flags & OFTABLE_HIDDEN) {
-            n_tables = i;
-            break;
+    reply = ofputil_encode_table_stats_reply(request);
+    for (i = 0; i < ofproto->n_tables; i++) {
+        if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
+            ofputil_append_table_stats_reply(reply, &stats[i], &features[i]);
         }
+    }
+    ofconn_send_reply(ofconn, reply);
 
-        if (table->name) {
-            ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name);
-        }
+    free(features);
+    free(stats);
 
-        if (table->max_flows < ntohl(ots[i].max_entries)) {
-            ots[i].max_entries = htonl(table->max_flows);
-        }
+    return 0;
+}
+
+static enum ofperr
+handle_table_features_request(struct ofconn *ofconn,
+                              const struct ofp_header *request)
+{
+    struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
+    struct ofputil_table_features *features;
+    struct list replies;
+    struct ofpbuf msg;
+    size_t i;
+
+    ofpbuf_use_const(&msg, request, ntohs(request->length));
+    ofpraw_pull_assert(&msg);
+    if (ofpbuf_size(&msg) || ofpmp_more(request)) {
+        return OFPERR_OFPTFFC_EPERM;
     }
 
-    msg = ofputil_encode_table_stats_reply(ots, n_tables, request);
-    ofconn_send_reply(ofconn, msg);
+    query_tables(ofproto, &features, NULL);
 
-    free(ots);
+    ofpmp_init(&replies, request);
+    for (i = 0; i < ofproto->n_tables; i++) {
+        if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
+            ofputil_append_table_features_reply(&features[i], &replies);
+        }
+    }
+    ofconn_send_replies(ofconn, &replies);
+
+    free(features);
 
     return 0;
 }
@@ -3401,6 +3599,9 @@ rule_collection_destroy(struct rule_collection *rules)
     if (rules->rules != rules->stub) {
         free(rules->rules);
     }
+
+    /* Make repeated destruction harmless. */
+    rule_collection_init(rules);
 }
 
 /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'.  This
@@ -3465,15 +3666,11 @@ collect_rules_loose(struct ofproto *ofproto,
         }
     } else {
         FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
-            struct cls_cursor cursor;
             struct rule *rule;
 
-            fat_rwlock_rdlock(&table->cls.rwlock);
-            cls_cursor_init(&cursor, &table->cls, &criteria->cr);
-            CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
+            CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr) {
                 collect_rule(rule, criteria, rules, &n_readonly);
             }
-            fat_rwlock_unlock(&table->cls.rwlock);
         }
     }
 
@@ -3526,10 +3723,8 @@ collect_rules_strict(struct ofproto *ofproto,
         FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
             struct rule *rule;
 
-            fat_rwlock_rdlock(&table->cls.rwlock);
             rule = rule_from_cls_rule(classifier_find_rule_exactly(
                                           &table->cls, &criteria->cr));
-            fat_rwlock_unlock(&table->cls.rwlock);
             if (rule) {
                 collect_rule(rule, criteria, rules, &n_readonly);
             }
@@ -3672,15 +3867,11 @@ ofproto_get_all_flows(struct ofproto *p, struct ds *results)
     struct oftable *table;
 
     OFPROTO_FOR_EACH_TABLE (table, p) {
-        struct cls_cursor cursor;
         struct rule *rule;
 
-        fat_rwlock_rdlock(&table->cls.rwlock);
-        cls_cursor_init(&cursor, &table->cls, NULL);
-        CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
+        CLS_FOR_EACH (rule, cr, &table->cls) {
             flow_stats_ds(rule, results);
         }
-        fat_rwlock_unlock(&table->cls.rwlock);
     }
 }
 
@@ -3987,9 +4178,7 @@ add_flow(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
     cls_rule_init(&cr, &fm->match, fm->priority);
 
     /* Transform "add" into "modify" if there's an existing identical flow. */
-    fat_rwlock_rdlock(&table->cls.rwlock);
     rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr));
-    fat_rwlock_unlock(&table->cls.rwlock);
     if (rule) {
         struct rule_collection rules;
 
@@ -4006,13 +4195,7 @@ add_flow(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
 
     /* Check for overlap, if requested. */
     if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) {
-        bool overlaps;
-
-        fat_rwlock_rdlock(&table->cls.rwlock);
-        overlaps = classifier_rule_overlaps(&table->cls, &cr);
-        fat_rwlock_unlock(&table->cls.rwlock);
-
-        if (overlaps) {
+        if (classifier_rule_overlaps(&table->cls, &cr)) {
             cls_rule_destroy(&cr);
             return OFPERR_OFPFMFC_OVERLAP;
         }
@@ -4074,9 +4257,7 @@ add_flow(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
         meter_insert_rule(rule);
     }
 
-    fat_rwlock_wrlock(&table->cls.rwlock);
     classifier_insert(&table->cls, CONST_CAST(struct cls_rule *, &rule->cr));
-    fat_rwlock_unlock(&table->cls.rwlock);
 
     error = ofproto->ofproto_class->rule_insert(rule);
     if (error) {
@@ -4099,7 +4280,7 @@ add_flow(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
     }
 
     ofmonitor_report(ofproto->connmgr, rule, NXFME_ADDED, 0,
-                     req ? req->ofconn : NULL, req ? req->xid : 0);
+                     req ? req->ofconn : NULL, req ? req->xid : 0, NULL);
 
     return req ? send_buffered_packet(req->ofconn, fm->buffer_id, rule) : 0;
 }
@@ -4189,7 +4370,6 @@ modify_flows__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
         if (change_actions) {
             ovsrcu_set(&rule->actions, rule_actions_create(fm->ofpacts,
                                                            fm->ofpacts_len));
-            rule_actions_destroy(actions);
         }
 
         if (change_actions || reset_counters) {
@@ -4198,12 +4378,14 @@ modify_flows__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
 
         if (event != NXFME_MODIFIED || change_actions || change_cookie) {
             ofmonitor_report(ofproto->connmgr, rule, event, 0,
-                             req ? req->ofconn : NULL, req ? req->xid : 0);
+                             req ? req->ofconn : NULL, req ? req->xid : 0,
+                             change_actions ? actions : NULL);
         }
 
         if (change_actions) {
             learned_cookies_inc(ofproto, rule_get_actions(rule));
             learned_cookies_dec(ofproto, actions, &dead_cookies);
+            rule_actions_destroy(actions);
         }
     }
     learned_cookies_flush(ofproto, &dead_cookies);
@@ -4311,7 +4493,8 @@ delete_flows__(const struct rule_collection *rules,
             ofproto_rule_send_removed(rule, reason);
 
             ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason,
-                             req ? req->ofconn : NULL, req ? req->xid : 0);
+                             req ? req->ofconn : NULL, req ? req->xid : 0,
+                             NULL);
             oftable_remove_rule(rule);
             ofproto->ofproto_class->rule_delete(rule);
 
@@ -4794,15 +4977,11 @@ ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m,
 
     cls_rule_init_from_minimatch(&target, &m->match, 0);
     FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) {
-        struct cls_cursor cursor;
         struct rule *rule;
 
-        fat_rwlock_rdlock(&table->cls.rwlock);
-        cls_cursor_init(&cursor, &table->cls, &target);
-        CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
+        CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target) {
             ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules);
         }
-        fat_rwlock_unlock(&table->cls.rwlock);
     }
     cls_rule_destroy(&target);
 }
@@ -4825,6 +5004,24 @@ ofmonitor_collect_resume_rules(struct ofmonitor *m,
     ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules);
 }
 
+static enum ofperr
+flow_monitor_delete(struct ofconn *ofconn, uint32_t id)
+    OVS_REQUIRES(ofproto_mutex)
+{
+    struct ofmonitor *m;
+    enum ofperr error;
+
+    m = ofmonitor_lookup(ofconn, id);
+    if (m) {
+        ofmonitor_destroy(m);
+        error = 0;
+    } else {
+        error = OFPERR_OFPMOFC_UNKNOWN_MONITOR;
+    }
+
+    return error;
+}
+
 static enum ofperr
 handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh)
     OVS_EXCLUDED(ofproto_mutex)
@@ -4838,7 +5035,6 @@ handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh)
     struct ofpbuf b;
     size_t i;
 
-    error = 0;
     ofpbuf_use_const(&b, oh, ntohs(oh->length));
     monitors = NULL;
     n_monitors = allocated_monitors = 0;
@@ -4905,20 +5101,13 @@ static enum ofperr
 handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh)
     OVS_EXCLUDED(ofproto_mutex)
 {
-    struct ofmonitor *m;
     enum ofperr error;
     uint32_t id;
 
     id = ofputil_decode_flow_monitor_cancel(oh);
 
     ovs_mutex_lock(&ofproto_mutex);
-    m = ofmonitor_lookup(ofconn, id);
-    if (m) {
-        ofmonitor_destroy(m);
-        error = 0;
-    } else {
-        error = OFPERR_OFPMOFC_UNKNOWN_MONITOR;
-    }
+    error = flow_monitor_delete(ofconn, id);
     ovs_mutex_unlock(&ofproto_mutex);
 
     return error;
@@ -5723,35 +5912,32 @@ handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh)
     }
 }
 
-enum ofproto_table_config
-ofproto_table_get_config(const struct ofproto *ofproto, uint8_t table_id)
+enum ofputil_table_miss
+ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id)
 {
-    unsigned int value;
-    atomic_read(&ofproto->tables[table_id].config, &value);
-    return (enum ofproto_table_config)value;
+    enum ofputil_table_miss value;
+
+    atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &value);
+    return value;
 }
 
 static enum ofperr
 table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm)
 {
-    /* Only accept currently supported configurations */
-    if (tm->config & ~OFPTC11_TABLE_MISS_MASK) {
-        return OFPERR_OFPTMFC_BAD_CONFIG;
-    }
-
-    if (tm->table_id == OFPTT_ALL) {
-        int i;
-        for (i = 0; i < ofproto->n_tables; i++) {
-            atomic_store(&ofproto->tables[i].config,
-                         (unsigned int)tm->config);
-        }
-    } else if (!check_table_id(ofproto, tm->table_id)) {
+    if (!check_table_id(ofproto, tm->table_id)) {
         return OFPERR_OFPTMFC_BAD_TABLE;
-    } else {
-        atomic_store(&ofproto->tables[tm->table_id].config,
-                     (unsigned int)tm->config);
+    } else if (tm->miss_config != OFPUTIL_TABLE_MISS_DEFAULT) {
+        if (tm->table_id == OFPTT_ALL) {
+            int i;
+            for (i = 0; i < ofproto->n_tables; i++) {
+                atomic_store_relaxed(&ofproto->tables[i].miss_config,
+                                     tm->miss_config);
+            }
+        } else {
+            atomic_store_relaxed(&ofproto->tables[tm->table_id].miss_config,
+                                 tm->miss_config);
+        }
     }
-
     return 0;
 }
 
@@ -5939,6 +6125,9 @@ handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
     case OFPTYPE_TABLE_STATS_REQUEST:
         return handle_table_stats_request(ofconn, oh);
 
+    case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
+        return handle_table_features_request(ofconn, oh);
+
     case OFPTYPE_PORT_STATS_REQUEST:
         return handle_port_stats_request(ofconn, oh);
 
@@ -6003,7 +6192,6 @@ handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
     case OFPTYPE_METER_STATS_REPLY:
     case OFPTYPE_METER_CONFIG_STATS_REPLY:
     case OFPTYPE_METER_FEATURES_STATS_REPLY:
-    case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
     case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
     case OFPTYPE_ROLE_STATUS:
     default:
@@ -6339,12 +6527,10 @@ oftable_init(struct oftable *table)
     memset(table, 0, sizeof *table);
     classifier_init(&table->cls, flow_segment_u32s);
     table->max_flows = UINT_MAX;
-    atomic_init(&table->config, (unsigned int)OFPROTO_TABLE_MISS_DEFAULT);
+    atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT);
 
-    fat_rwlock_wrlock(&table->cls.rwlock);
     classifier_set_prefix_fields(&table->cls, default_prefix_fields,
                                  ARRAY_SIZE(default_prefix_fields));
-    fat_rwlock_unlock(&table->cls.rwlock);
 
     atomic_init(&table->n_matched, 0);
     atomic_init(&table->n_missed, 0);
@@ -6356,9 +6542,7 @@ oftable_init(struct oftable *table)
 static void
 oftable_destroy(struct oftable *table)
 {
-    fat_rwlock_rdlock(&table->cls.rwlock);
     ovs_assert(classifier_is_empty(&table->cls));
-    fat_rwlock_unlock(&table->cls.rwlock);
     oftable_disable_eviction(table);
     classifier_destroy(&table->cls);
     free(table->name);
@@ -6419,7 +6603,6 @@ oftable_enable_eviction(struct oftable *table,
                         const struct mf_subfield *fields, size_t n_fields)
     OVS_REQUIRES(ofproto_mutex)
 {
-    struct cls_cursor cursor;
     struct rule *rule;
 
     if (table->eviction_fields
@@ -6440,12 +6623,9 @@ oftable_enable_eviction(struct oftable *table,
     hmap_init(&table->eviction_groups_by_id);
     heap_init(&table->eviction_groups_by_size);
 
-    fat_rwlock_rdlock(&table->cls.rwlock);
-    cls_cursor_init(&cursor, &table->cls, NULL);
-    CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
+    CLS_FOR_EACH (rule, cr, &table->cls) {
         eviction_group_add_rule(rule);
     }
-    fat_rwlock_unlock(&table->cls.rwlock);
 }
 
 /* Removes 'rule' from the oftable that contains it. */
@@ -6455,9 +6635,7 @@ oftable_remove_rule__(struct ofproto *ofproto, struct rule *rule)
 {
     struct classifier *cls = &ofproto->tables[rule->table_id].cls;
 
-    fat_rwlock_wrlock(&cls->rwlock);
     classifier_remove(cls, CONST_CAST(struct cls_rule *, &rule->cr));
-    fat_rwlock_unlock(&cls->rwlock);
 
     cookies_remove(ofproto, rule);
 
@@ -6547,12 +6725,9 @@ ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap)
     ofproto->vlans_changed = false;
 
     OFPROTO_FOR_EACH_TABLE (oftable, ofproto) {
-        struct cls_cursor cursor;
         struct rule *rule;
 
-        fat_rwlock_rdlock(&oftable->cls.rwlock);
-        cls_cursor_init(&cursor, &oftable->cls, &target);
-        CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
+        CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target) {
             if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) {
                 uint16_t vid = miniflow_get_vid(&rule->cr.match.flow);
 
@@ -6560,7 +6735,6 @@ ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap)
                 bitmap_set1(ofproto->vlan_bitmap, vid);
             }
         }
-        fat_rwlock_unlock(&oftable->cls.rwlock);
     }
 
     cls_rule_destroy(&target);