--- /dev/null
- struct lacp_slave_settings *lacp)
+/*
+ * Copyright (c) 2009, 2010, 2011 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <config.h>
+
+#include "ofproto/private.h"
+
+#include <errno.h>
+
+#include "autopath.h"
+#include "bond.h"
+#include "byte-order.h"
+#include "connmgr.h"
+#include "coverage.h"
+#include "cfm.h"
+#include "dpif.h"
+#include "dynamic-string.h"
+#include "fail-open.h"
+#include "hmapx.h"
+#include "lacp.h"
+#include "mac-learning.h"
+#include "multipath.h"
+#include "netdev.h"
+#include "netlink.h"
+#include "nx-match.h"
+#include "odp-util.h"
+#include "ofp-util.h"
+#include "ofpbuf.h"
+#include "ofp-print.h"
+#include "ofproto-sflow.h"
+#include "poll-loop.h"
+#include "timer.h"
+#include "unaligned.h"
+#include "unixctl.h"
+#include "vlan-bitmap.h"
+#include "vlog.h"
+
+VLOG_DEFINE_THIS_MODULE(ofproto_dpif);
+
+COVERAGE_DEFINE(ofproto_dpif_ctlr_action);
+COVERAGE_DEFINE(ofproto_dpif_expired);
+COVERAGE_DEFINE(ofproto_dpif_no_packet_in);
+COVERAGE_DEFINE(ofproto_dpif_xlate);
+COVERAGE_DEFINE(facet_changed_rule);
+COVERAGE_DEFINE(facet_invalidated);
+COVERAGE_DEFINE(facet_revalidate);
+COVERAGE_DEFINE(facet_unexpected);
+
+/* Maximum depth of flow table recursion (due to NXAST_RESUBMIT actions) in a
+ * flow translation. */
+#define MAX_RESUBMIT_RECURSION 16
+
+struct ofport_dpif;
+struct ofproto_dpif;
+
+struct rule_dpif {
+ struct rule up;
+
+ long long int used; /* Time last used; time created if not used. */
+
+ /* 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 facet.
+ */
+ uint64_t packet_count; /* Number of packets received. */
+ uint64_t byte_count; /* Number of bytes received. */
+
+ struct list facets; /* List of "struct facet"s. */
+};
+
+static struct rule_dpif *rule_dpif_cast(const struct rule *rule)
+{
+ return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
+}
+
+static struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *ofproto,
+ const struct flow *flow);
+
+#define MAX_MIRRORS 32
+typedef uint32_t mirror_mask_t;
+#define MIRROR_MASK_C(X) UINT32_C(X)
+BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS);
+struct ofmirror {
+ struct ofproto_dpif *ofproto; /* Owning ofproto. */
+ size_t idx; /* In ofproto's "mirrors" array. */
+ void *aux; /* Key supplied by ofproto's client. */
+ char *name; /* Identifier for log messages. */
+
+ /* Selection criteria. */
+ struct hmapx srcs; /* Contains "struct ofbundle *"s. */
+ struct hmapx dsts; /* Contains "struct ofbundle *"s. */
+ unsigned long *vlans; /* Bitmap of chosen VLANs, NULL selects all. */
+
+ /* Output (mutually exclusive). */
+ struct ofbundle *out; /* Output port or NULL. */
+ int out_vlan; /* Output VLAN or -1. */
+};
+
+static void mirror_destroy(struct ofmirror *);
+
+/* A group of one or more OpenFlow ports. */
+#define OFBUNDLE_FLOOD ((struct ofbundle *) 1)
+struct ofbundle {
+ struct ofproto_dpif *ofproto; /* Owning ofproto. */
+ struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
+ void *aux; /* Key supplied by ofproto's client. */
+ char *name; /* Identifier for log messages. */
+
+ /* Configuration. */
+ struct list ports; /* Contains "struct ofport"s. */
+ int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
+ unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
+ * NULL if all VLANs are trunked. */
+ struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */
+ struct bond *bond; /* Nonnull iff more than one port. */
+
+ /* Status. */
+ bool floodable; /* True if no port has OFPPC_NO_FLOOD set. */
+
+ /* Port mirroring info. */
+ mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */
+ mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */
+ mirror_mask_t mirror_out; /* Mirrors that output to this bundle. */
+};
+
+static void bundle_remove(struct ofport *);
+static void bundle_destroy(struct ofbundle *);
+static void bundle_del_port(struct ofport_dpif *);
+static void bundle_run(struct ofbundle *);
+static void bundle_wait(struct ofbundle *);
+
+struct action_xlate_ctx {
+/* action_xlate_ctx_init() initializes these members. */
+
+ /* The ofproto. */
+ struct ofproto_dpif *ofproto;
+
+ /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
+ * this flow when actions change header fields. */
+ struct flow flow;
+
+ /* The packet corresponding to 'flow', or a null pointer if we are
+ * revalidating without a packet to refer to. */
+ const struct ofpbuf *packet;
+
+ /* If nonnull, called just before executing a resubmit action.
+ *
+ * This is normally null so the client has to set it manually after
+ * calling action_xlate_ctx_init(). */
+ void (*resubmit_hook)(struct action_xlate_ctx *, struct rule_dpif *);
+
+/* xlate_actions() initializes and uses these members. The client might want
+ * to look at them after it returns. */
+
+ struct ofpbuf *odp_actions; /* Datapath actions. */
+ tag_type tags; /* Tags associated with OFPP_NORMAL actions. */
+ bool may_set_up_flow; /* True ordinarily; false if the actions must
+ * be reassessed for every packet. */
+ uint16_t nf_output_iface; /* Output interface index for NetFlow. */
+
+/* xlate_actions() initializes and uses these members, but the client has no
+ * reason to look at them. */
+
+ int recurse; /* Recursion level, via xlate_table_action. */
+ int last_pop_priority; /* Offset in 'odp_actions' just past most
+ * recent ODP_ACTION_ATTR_SET_PRIORITY. */
+};
+
+static void action_xlate_ctx_init(struct action_xlate_ctx *,
+ struct ofproto_dpif *, const struct flow *,
+ const struct ofpbuf *);
+static struct ofpbuf *xlate_actions(struct action_xlate_ctx *,
+ const union ofp_action *in, size_t n_in);
+
+/* An exact-match instantiation of an OpenFlow flow. */
+struct facet {
+ long long int used; /* Time last used; time created if not used. */
+
+ /* These statistics:
+ *
+ * - Do include packets and bytes sent "by hand", e.g. with
+ * dpif_execute().
+ *
+ * - Do include packets and bytes that were obtained from the datapath
+ * when a flow was deleted (e.g. dpif_flow_del()) or when its
+ * statistics were reset (e.g. dpif_flow_put() with
+ * DPIF_FP_ZERO_STATS).
+ *
+ * - Do not include any packets or bytes that can currently be obtained
+ * from the datapath by, e.g., dpif_flow_get().
+ */
+ uint64_t packet_count; /* Number of packets received. */
+ uint64_t byte_count; /* Number of bytes received. */
+
+ uint64_t dp_packet_count; /* Last known packet count in the datapath. */
+ uint64_t dp_byte_count; /* Last known byte count in the datapath. */
+
+ uint64_t rs_packet_count; /* Packets pushed to resubmit children. */
+ uint64_t rs_byte_count; /* Bytes pushed to resubmit children. */
+ long long int rs_used; /* Used time pushed to resubmit children. */
+
+ /* Number of bytes passed to account_cb. This may include bytes that can
+ * currently obtained from the datapath (thus, it can be greater than
+ * byte_count). */
+ uint64_t accounted_bytes;
+
+ struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */
+ struct list list_node; /* In owning rule's 'facets' list. */
+ struct rule_dpif *rule; /* Owning rule. */
+ struct flow flow; /* Exact-match flow. */
+ bool installed; /* Installed in datapath? */
+ bool may_install; /* True ordinarily; false if actions must
+ * be reassessed for every packet. */
+ size_t actions_len; /* Number of bytes in actions[]. */
+ struct nlattr *actions; /* Datapath actions. */
+ tag_type tags; /* Tags. */
+ struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
+};
+
+static struct facet *facet_create(struct rule_dpif *, const struct flow *,
+ const struct ofpbuf *packet);
+static void facet_remove(struct ofproto_dpif *, struct facet *);
+static void facet_free(struct facet *);
+
+static struct facet *facet_find(struct ofproto_dpif *, const struct flow *);
+static struct facet *facet_lookup_valid(struct ofproto_dpif *,
+ const struct flow *);
+static bool facet_revalidate(struct ofproto_dpif *, struct facet *);
+
+static void facet_execute(struct ofproto_dpif *, struct facet *,
+ struct ofpbuf *packet);
+
+static int facet_put__(struct ofproto_dpif *, struct facet *,
+ const struct nlattr *actions, size_t actions_len,
+ struct dpif_flow_stats *);
+static void facet_install(struct ofproto_dpif *, struct facet *,
+ bool zero_stats);
+static void facet_uninstall(struct ofproto_dpif *, struct facet *);
+static void facet_flush_stats(struct ofproto_dpif *, struct facet *);
+
+static void facet_make_actions(struct ofproto_dpif *, struct facet *,
+ const struct ofpbuf *packet);
+static void facet_update_time(struct ofproto_dpif *, struct facet *,
+ long long int used);
+static void facet_update_stats(struct ofproto_dpif *, struct facet *,
+ const struct dpif_flow_stats *);
+static void facet_push_stats(struct facet *);
+static void facet_account(struct ofproto_dpif *, struct facet *,
+ uint64_t extra_bytes);
+
+static bool facet_is_controller_flow(struct facet *);
+
+static void flow_push_stats(const struct rule_dpif *,
+ struct flow *, uint64_t packets, uint64_t bytes,
+ long long int used);
+
+struct ofport_dpif {
+ struct ofport up;
+
+ uint32_t odp_port;
+ struct ofbundle *bundle; /* Bundle that contains this port, if any. */
+ struct list bundle_node; /* In struct ofbundle's "ports" list. */
+ struct cfm *cfm; /* Connectivity Fault Management, if any. */
+ tag_type tag; /* Tag associated with this port. */
++ uint32_t bond_stable_id; /* stable_id to use as bond slave, or 0. */
+};
+
+static struct ofport_dpif *
+ofport_dpif_cast(const struct ofport *ofport)
+{
+ assert(ofport->ofproto->ofproto_class == &ofproto_dpif_class);
+ return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL;
+}
+
+static void port_run(struct ofport_dpif *);
+static void port_wait(struct ofport_dpif *);
+static int set_cfm(struct ofport *, const struct cfm *,
+ const uint16_t *remote_mps, size_t n_remote_mps);
+
+struct ofproto_dpif {
+ struct ofproto up;
+ struct dpif *dpif;
+ int max_ports;
+
+ /* Statistics. */
+ uint64_t n_matches;
+
+ /* Bridging. */
+ struct netflow *netflow;
+ struct ofproto_sflow *sflow;
+ struct hmap bundles; /* Contains "struct ofbundle"s. */
+ struct mac_learning *ml;
+ struct ofmirror *mirrors[MAX_MIRRORS];
+ bool has_bonded_bundles;
+
+ /* Expiration. */
+ struct timer next_expiration;
+
+ /* Facets. */
+ struct hmap facets;
+ bool need_revalidate;
+ struct tag_set revalidate_set;
+};
+
+static void ofproto_dpif_unixctl_init(void);
+
+static struct ofproto_dpif *
+ofproto_dpif_cast(const struct ofproto *ofproto)
+{
+ assert(ofproto->ofproto_class == &ofproto_dpif_class);
+ return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
+}
+
+static struct ofport_dpif *get_ofp_port(struct ofproto_dpif *,
+ uint16_t ofp_port);
+static struct ofport_dpif *get_odp_port(struct ofproto_dpif *,
+ uint32_t odp_port);
+
+/* Packet processing. */
+static void update_learning_table(struct ofproto_dpif *,
+ const struct flow *, int vlan,
+ struct ofbundle *);
+static bool is_admissible(struct ofproto_dpif *, const struct flow *,
+ bool have_packet, tag_type *, int *vlanp,
+ struct ofbundle **in_bundlep);
+static void handle_upcall(struct ofproto_dpif *, struct dpif_upcall *);
+
+/* Flow expiration. */
+static int expire(struct ofproto_dpif *);
+
+/* Utilities. */
+static int send_packet(struct ofproto_dpif *,
+ uint32_t odp_port, uint16_t vlan_tci,
+ const struct ofpbuf *packet);
+
+/* Global variables. */
+static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+\f
+/* Factory functions. */
+
+static void
+enumerate_types(struct sset *types)
+{
+ dp_enumerate_types(types);
+}
+
+static int
+enumerate_names(const char *type, struct sset *names)
+{
+ return dp_enumerate_names(type, names);
+}
+
+static int
+del(const char *type, const char *name)
+{
+ struct dpif *dpif;
+ int error;
+
+ error = dpif_open(name, type, &dpif);
+ if (!error) {
+ error = dpif_delete(dpif);
+ dpif_close(dpif);
+ }
+ return error;
+}
+\f
+/* Basic life-cycle. */
+
+static struct ofproto *
+alloc(void)
+{
+ struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto);
+ return &ofproto->up;
+}
+
+static void
+dealloc(struct ofproto *ofproto_)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ free(ofproto);
+}
+
+static int
+construct(struct ofproto *ofproto_)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ const char *name = ofproto->up.name;
+ int error;
+ int i;
+
+ error = dpif_create_and_open(name, ofproto->up.type, &ofproto->dpif);
+ if (error) {
+ VLOG_ERR("failed to open datapath %s: %s", name, strerror(error));
+ return error;
+ }
+
+ ofproto->max_ports = dpif_get_max_ports(ofproto->dpif);
+ ofproto->n_matches = 0;
+
+ error = dpif_recv_set_mask(ofproto->dpif,
+ ((1u << DPIF_UC_MISS) |
+ (1u << DPIF_UC_ACTION) |
+ (1u << DPIF_UC_SAMPLE)));
+ if (error) {
+ VLOG_ERR("failed to listen on datapath %s: %s", name, strerror(error));
+ dpif_close(ofproto->dpif);
+ return error;
+ }
+ dpif_flow_flush(ofproto->dpif);
+ dpif_recv_purge(ofproto->dpif);
+
+ ofproto->netflow = NULL;
+ ofproto->sflow = NULL;
+ hmap_init(&ofproto->bundles);
+ ofproto->ml = mac_learning_create();
+ for (i = 0; i < MAX_MIRRORS; i++) {
+ ofproto->mirrors[i] = NULL;
+ }
+ ofproto->has_bonded_bundles = false;
+
+ timer_set_duration(&ofproto->next_expiration, 1000);
+
+ hmap_init(&ofproto->facets);
+ ofproto->need_revalidate = false;
+ tag_set_init(&ofproto->revalidate_set);
+
+ ofproto->up.tables = xmalloc(sizeof *ofproto->up.tables);
+ classifier_init(&ofproto->up.tables[0]);
+ ofproto->up.n_tables = 1;
+
+ ofproto_dpif_unixctl_init();
+
+ return 0;
+}
+
+static void
+destruct(struct ofproto *ofproto_)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ int i;
+
+ for (i = 0; i < MAX_MIRRORS; i++) {
+ mirror_destroy(ofproto->mirrors[i]);
+ }
+
+ netflow_destroy(ofproto->netflow);
+ ofproto_sflow_destroy(ofproto->sflow);
+ hmap_destroy(&ofproto->bundles);
+ mac_learning_destroy(ofproto->ml);
+
+ hmap_destroy(&ofproto->facets);
+
+ dpif_close(ofproto->dpif);
+}
+
+static int
+run(struct ofproto *ofproto_)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ struct ofport_dpif *ofport;
+ struct ofbundle *bundle;
+ int i;
+
+ dpif_run(ofproto->dpif);
+
+ for (i = 0; i < 50; i++) {
+ struct dpif_upcall packet;
+ int error;
+
+ error = dpif_recv(ofproto->dpif, &packet);
+ if (error) {
+ if (error == ENODEV) {
+ /* Datapath destroyed. */
+ return error;
+ }
+ break;
+ }
+
+ handle_upcall(ofproto, &packet);
+ }
+
+ if (timer_expired(&ofproto->next_expiration)) {
+ int delay = expire(ofproto);
+ timer_set_duration(&ofproto->next_expiration, delay);
+ }
+
+ if (ofproto->netflow) {
+ netflow_run(ofproto->netflow);
+ }
+ if (ofproto->sflow) {
+ ofproto_sflow_run(ofproto->sflow);
+ }
+
+ HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
+ port_run(ofport);
+ }
+ HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
+ bundle_run(bundle);
+ }
+
+ /* Now revalidate if there's anything to do. */
+ if (ofproto->need_revalidate
+ || !tag_set_is_empty(&ofproto->revalidate_set)) {
+ struct tag_set revalidate_set = ofproto->revalidate_set;
+ bool revalidate_all = ofproto->need_revalidate;
+ struct facet *facet, *next;
+
+ /* Clear the revalidation flags. */
+ tag_set_init(&ofproto->revalidate_set);
+ ofproto->need_revalidate = false;
+
+ HMAP_FOR_EACH_SAFE (facet, next, hmap_node, &ofproto->facets) {
+ if (revalidate_all
+ || tag_set_intersects(&revalidate_set, facet->tags)) {
+ facet_revalidate(ofproto, facet);
+ }
+ }
+ }
+
+ return 0;
+}
+
+static void
+wait(struct ofproto *ofproto_)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ struct ofport_dpif *ofport;
+ struct ofbundle *bundle;
+
+ dpif_wait(ofproto->dpif);
+ dpif_recv_wait(ofproto->dpif);
+ if (ofproto->sflow) {
+ ofproto_sflow_wait(ofproto->sflow);
+ }
+ if (!tag_set_is_empty(&ofproto->revalidate_set)) {
+ poll_immediate_wake();
+ }
+ HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
+ port_wait(ofport);
+ }
+ HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
+ bundle_wait(bundle);
+ }
+ if (ofproto->need_revalidate) {
+ /* Shouldn't happen, but if it does just go around again. */
+ VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
+ poll_immediate_wake();
+ } else {
+ timer_wait(&ofproto->next_expiration);
+ }
+}
+
+static void
+flush(struct ofproto *ofproto_)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ struct facet *facet, *next_facet;
+
+ HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) {
+ /* Mark the facet as not installed so that facet_remove() doesn't
+ * bother trying to uninstall it. There is no point in uninstalling it
+ * individually since we are about to blow away all the facets with
+ * dpif_flow_flush(). */
+ facet->installed = false;
+ facet->dp_packet_count = 0;
+ facet->dp_byte_count = 0;
+ facet_remove(ofproto, facet);
+ }
+ dpif_flow_flush(ofproto->dpif);
+}
+
+static void
+get_features(struct ofproto *ofproto_ OVS_UNUSED,
+ bool *arp_match_ip, uint32_t *actions)
+{
+ *arp_match_ip = true;
+ *actions = ((1u << OFPAT_OUTPUT) |
+ (1u << OFPAT_SET_VLAN_VID) |
+ (1u << OFPAT_SET_VLAN_PCP) |
+ (1u << OFPAT_STRIP_VLAN) |
+ (1u << OFPAT_SET_DL_SRC) |
+ (1u << OFPAT_SET_DL_DST) |
+ (1u << OFPAT_SET_NW_SRC) |
+ (1u << OFPAT_SET_NW_DST) |
+ (1u << OFPAT_SET_NW_TOS) |
+ (1u << OFPAT_SET_TP_SRC) |
+ (1u << OFPAT_SET_TP_DST) |
+ (1u << OFPAT_ENQUEUE));
+}
+
+static void
+get_tables(struct ofproto *ofproto_, struct ofp_table_stats *ots)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ struct odp_stats s;
+
+ strcpy(ots->name, "classifier");
+
+ dpif_get_dp_stats(ofproto->dpif, &s);
+ put_32aligned_be64(&ots->lookup_count, htonll(s.n_hit + s.n_missed));
+ put_32aligned_be64(&ots->matched_count,
+ htonll(s.n_hit + ofproto->n_matches));
+}
+
+static int
+set_netflow(struct ofproto *ofproto_,
+ const struct netflow_options *netflow_options)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+
+ if (netflow_options) {
+ if (!ofproto->netflow) {
+ ofproto->netflow = netflow_create();
+ }
+ return netflow_set_options(ofproto->netflow, netflow_options);
+ } else {
+ netflow_destroy(ofproto->netflow);
+ ofproto->netflow = NULL;
+ return 0;
+ }
+}
+
+static struct ofport *
+port_alloc(void)
+{
+ struct ofport_dpif *port = xmalloc(sizeof *port);
+ return &port->up;
+}
+
+static void
+port_dealloc(struct ofport *port_)
+{
+ struct ofport_dpif *port = ofport_dpif_cast(port_);
+ free(port);
+}
+
+static int
+port_construct(struct ofport *port_)
+{
+ struct ofport_dpif *port = ofport_dpif_cast(port_);
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
+
+ port->odp_port = ofp_port_to_odp_port(port->up.ofp_port);
+ port->bundle = NULL;
+ port->cfm = NULL;
+ port->tag = tag_create_random();
+
+ if (ofproto->sflow) {
+ ofproto_sflow_add_port(ofproto->sflow, port->odp_port,
+ netdev_get_name(port->up.netdev));
+ }
+
+ return 0;
+}
+
+static void
+port_destruct(struct ofport *port_)
+{
+ struct ofport_dpif *port = ofport_dpif_cast(port_);
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
+
+ bundle_remove(port_);
+ set_cfm(port_, NULL, NULL, 0);
+ if (ofproto->sflow) {
+ ofproto_sflow_del_port(ofproto->sflow, port->odp_port);
+ }
+}
+
+static void
+port_modified(struct ofport *port_)
+{
+ struct ofport_dpif *port = ofport_dpif_cast(port_);
+
+ if (port->bundle && port->bundle->bond) {
+ bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev);
+ }
+}
+
+static void
+port_reconfigured(struct ofport *port_, ovs_be32 old_config)
+{
+ struct ofport_dpif *port = ofport_dpif_cast(port_);
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
+ ovs_be32 changed = old_config ^ port->up.opp.config;
+
+ if (changed & htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP |
+ OFPPC_NO_FWD | OFPPC_NO_FLOOD)) {
+ ofproto->need_revalidate = true;
+ }
+}
+
+static int
+set_sflow(struct ofproto *ofproto_,
+ const struct ofproto_sflow_options *sflow_options)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ struct ofproto_sflow *os = ofproto->sflow;
+ if (sflow_options) {
+ if (!os) {
+ struct ofport_dpif *ofport;
+
+ os = ofproto->sflow = ofproto_sflow_create(ofproto->dpif);
+ HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
+ ofproto_sflow_add_port(os, ofport->odp_port,
+ netdev_get_name(ofport->up.netdev));
+ }
+ }
+ ofproto_sflow_set_options(os, sflow_options);
+ } else {
+ ofproto_sflow_destroy(os);
+ ofproto->sflow = NULL;
+ }
+ return 0;
+}
+
+static int
+set_cfm(struct ofport *ofport_, const struct cfm *cfm,
+ const uint16_t *remote_mps, size_t n_remote_mps)
+{
+ struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
+ int error;
+
+ if (!cfm) {
+ error = 0;
+ } else {
+ if (!ofport->cfm) {
+ ofport->cfm = cfm_create();
+ }
+
+ ofport->cfm->mpid = cfm->mpid;
+ ofport->cfm->interval = cfm->interval;
+ memcpy(ofport->cfm->maid, cfm->maid, CCM_MAID_LEN);
+
+ cfm_update_remote_mps(ofport->cfm, remote_mps, n_remote_mps);
+
+ if (cfm_configure(ofport->cfm)) {
+ return 0;
+ }
+
+ error = EINVAL;
+ }
+ cfm_destroy(ofport->cfm);
+ ofport->cfm = NULL;
+ return error;
+}
+
+static int
+get_cfm(struct ofport *ofport_, const struct cfm **cfmp)
+{
+ struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
+ *cfmp = ofport->cfm;
+ return 0;
+}
+\f
+/* Bundles. */
+
+/* Expires all MAC learning entries associated with 'port' and forces ofproto
+ * to revalidate every flow. */
+static void
+bundle_flush_macs(struct ofbundle *bundle)
+{
+ struct ofproto_dpif *ofproto = bundle->ofproto;
+ struct mac_learning *ml = ofproto->ml;
+ struct mac_entry *mac, *next_mac;
+
+ ofproto->need_revalidate = true;
+ LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
+ if (mac->port.p == bundle) {
+ mac_learning_expire(ml, mac);
+ }
+ }
+}
+
+static struct ofbundle *
+bundle_lookup(const struct ofproto_dpif *ofproto, void *aux)
+{
+ struct ofbundle *bundle;
+
+ HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0),
+ &ofproto->bundles) {
+ if (bundle->aux == aux) {
+ return bundle;
+ }
+ }
+ return NULL;
+}
+
+/* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the
+ * ones that are found to 'bundles'. */
+static void
+bundle_lookup_multiple(struct ofproto_dpif *ofproto,
+ void **auxes, size_t n_auxes,
+ struct hmapx *bundles)
+{
+ size_t i;
+
+ hmapx_init(bundles);
+ for (i = 0; i < n_auxes; i++) {
+ struct ofbundle *bundle = bundle_lookup(ofproto, auxes[i]);
+ if (bundle) {
+ hmapx_add(bundles, bundle);
+ }
+ }
+}
+
+static void
+bundle_del_port(struct ofport_dpif *port)
+{
+ struct ofbundle *bundle = port->bundle;
+
+ list_remove(&port->bundle_node);
+ port->bundle = NULL;
+
+ if (bundle->lacp) {
+ lacp_slave_unregister(bundle->lacp, port);
+ }
+ if (bundle->bond) {
+ bond_slave_unregister(bundle->bond, port);
+ }
+
+ bundle->floodable = true;
+ LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
+ if (port->up.opp.config & htonl(OFPPC_NO_FLOOD)) {
+ bundle->floodable = false;
+ }
+ }
+}
+
+static bool
+bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port,
- s->lacp ? &s->lacp_slaves[i] : NULL)) {
++ struct lacp_slave_settings *lacp,
++ uint32_t bond_stable_id)
+{
+ struct ofport_dpif *port;
+
+ port = get_ofp_port(bundle->ofproto, ofp_port);
+ if (!port) {
+ return false;
+ }
+
+ if (port->bundle != bundle) {
+ if (port->bundle) {
+ bundle_del_port(port);
+ }
+
+ port->bundle = bundle;
+ list_push_back(&bundle->ports, &port->bundle_node);
+ if (port->up.opp.config & htonl(OFPPC_NO_FLOOD)) {
+ bundle->floodable = false;
+ }
+ }
+ if (lacp) {
+ lacp_slave_register(bundle->lacp, port, lacp);
+ }
+
++ port->bond_stable_id = bond_stable_id;
++
+ return true;
+}
+
+static void
+bundle_destroy(struct ofbundle *bundle)
+{
+ struct ofproto_dpif *ofproto;
+ struct ofport_dpif *port, *next_port;
+ int i;
+
+ if (!bundle) {
+ return;
+ }
+
+ ofproto = bundle->ofproto;
+ for (i = 0; i < MAX_MIRRORS; i++) {
+ struct ofmirror *m = ofproto->mirrors[i];
+ if (m) {
+ if (m->out == bundle) {
+ mirror_destroy(m);
+ } else if (hmapx_find_and_delete(&m->srcs, bundle)
+ || hmapx_find_and_delete(&m->dsts, bundle)) {
+ ofproto->need_revalidate = true;
+ }
+ }
+ }
+
+ LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
+ bundle_del_port(port);
+ }
+
+ bundle_flush_macs(bundle);
+ hmap_remove(&ofproto->bundles, &bundle->hmap_node);
+ free(bundle->name);
+ free(bundle->trunks);
+ lacp_destroy(bundle->lacp);
+ bond_destroy(bundle->bond);
+ free(bundle);
+}
+
+static int
+bundle_set(struct ofproto *ofproto_, void *aux,
+ const struct ofproto_bundle_settings *s)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ bool need_flush = false;
+ const unsigned long *trunks;
+ struct ofport_dpif *port;
+ struct ofbundle *bundle;
+ size_t i;
+ bool ok;
+
+ if (!s) {
+ bundle_destroy(bundle_lookup(ofproto, aux));
+ return 0;
+ }
+
+ assert(s->n_slaves == 1 || s->bond != NULL);
+ assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
+
+ bundle = bundle_lookup(ofproto, aux);
+ if (!bundle) {
+ bundle = xmalloc(sizeof *bundle);
+
+ bundle->ofproto = ofproto;
+ hmap_insert(&ofproto->bundles, &bundle->hmap_node,
+ hash_pointer(aux, 0));
+ bundle->aux = aux;
+ bundle->name = NULL;
+
+ list_init(&bundle->ports);
+ bundle->vlan = -1;
+ bundle->trunks = NULL;
+ bundle->lacp = NULL;
+ bundle->bond = NULL;
+
+ bundle->floodable = true;
+
+ bundle->src_mirrors = 0;
+ bundle->dst_mirrors = 0;
+ bundle->mirror_out = 0;
+ }
+
+ if (!bundle->name || strcmp(s->name, bundle->name)) {
+ free(bundle->name);
+ bundle->name = xstrdup(s->name);
+ }
+
+ /* LACP. */
+ if (s->lacp) {
+ if (!bundle->lacp) {
+ bundle->lacp = lacp_create();
+ }
+ lacp_configure(bundle->lacp, s->lacp);
+ } else {
+ lacp_destroy(bundle->lacp);
+ bundle->lacp = NULL;
+ }
+
+ /* Update set of ports. */
+ ok = true;
+ for (i = 0; i < s->n_slaves; i++) {
+ if (!bundle_add_port(bundle, s->slaves[i],
- uint16_t stable_id = (bundle->lacp
- ? lacp_slave_get_port_id(bundle->lacp, port)
- : port->odp_port);
- bond_slave_register(bundle->bond, port, stable_id,
++ s->lacp ? &s->lacp_slaves[i] : NULL,
++ s->bond_stable_ids ? s->bond_stable_ids[i] : 0)) {
+ ok = false;
+ }
+ }
+ if (!ok || list_size(&bundle->ports) != s->n_slaves) {
+ struct ofport_dpif *next_port;
+
+ LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
+ for (i = 0; i < s->n_slaves; i++) {
+ if (s->slaves[i] == odp_port_to_ofp_port(port->odp_port)) {
+ goto found;
+ }
+ }
+
+ bundle_del_port(port);
+ found: ;
+ }
+ }
+ assert(list_size(&bundle->ports) <= s->n_slaves);
+
+ if (list_is_empty(&bundle->ports)) {
+ bundle_destroy(bundle);
+ return EINVAL;
+ }
+
+ /* Set VLAN tag. */
+ if (s->vlan != bundle->vlan) {
+ bundle->vlan = s->vlan;
+ need_flush = true;
+ }
+
+ /* Get trunked VLANs. */
+ trunks = s->vlan == -1 ? NULL : s->trunks;
+ if (!vlan_bitmap_equal(trunks, bundle->trunks)) {
+ free(bundle->trunks);
+ bundle->trunks = vlan_bitmap_clone(trunks);
+ need_flush = true;
+ }
+
+ /* Bonding. */
+ if (!list_is_short(&bundle->ports)) {
+ bundle->ofproto->has_bonded_bundles = true;
+ if (bundle->bond) {
+ if (bond_reconfigure(bundle->bond, s->bond)) {
+ ofproto->need_revalidate = true;
+ }
+ } else {
+ bundle->bond = bond_create(s->bond);
+ }
+
+ LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
++ bond_slave_register(bundle->bond, port, port->bond_stable_id,
+ port->up.netdev);
+ }
+ } else {
+ bond_destroy(bundle->bond);
+ bundle->bond = NULL;
+ }
+
+ /* If we changed something that would affect MAC learning, un-learn
+ * everything on this port and force flow revalidation. */
+ if (need_flush) {
+ bundle_flush_macs(bundle);
+ }
+
+ return 0;
+}
+
+static void
+bundle_remove(struct ofport *port_)
+{
+ struct ofport_dpif *port = ofport_dpif_cast(port_);
+ struct ofbundle *bundle = port->bundle;
+
+ if (bundle) {
+ bundle_del_port(port);
+ if (list_is_empty(&bundle->ports)) {
+ bundle_destroy(bundle);
+ } else if (list_is_short(&bundle->ports)) {
+ bond_destroy(bundle->bond);
+ bundle->bond = NULL;
+ }
+ }
+}
+
+static void
+send_pdu_cb(void *port_, const struct lacp_pdu *pdu)
+{
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
+ struct ofport_dpif *port = port_;
+ uint8_t ea[ETH_ADDR_LEN];
+ int error;
+
+ error = netdev_get_etheraddr(port->up.netdev, ea);
+ if (!error) {
+ struct lacp_pdu *packet_pdu;
+ struct ofpbuf packet;
+
+ ofpbuf_init(&packet, 0);
+ packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP,
+ sizeof *packet_pdu);
+ *packet_pdu = *pdu;
+ error = netdev_send(port->up.netdev, &packet);
+ if (error) {
+ VLOG_WARN_RL(&rl, "port %s: sending LACP PDU on iface %s failed "
+ "(%s)", port->bundle->name,
+ netdev_get_name(port->up.netdev), strerror(error));
+ }
+ ofpbuf_uninit(&packet);
+ } else {
+ VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
+ "%s (%s)", port->bundle->name,
+ netdev_get_name(port->up.netdev), strerror(error));
+ }
+}
+
+static void
+bundle_send_learning_packets(struct ofbundle *bundle)
+{
+ struct ofproto_dpif *ofproto = bundle->ofproto;
+ int error, n_packets, n_errors;
+ struct mac_entry *e;
+
+ error = n_packets = n_errors = 0;
+ LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
+ if (e->port.p != bundle) {
+ int ret = bond_send_learning_packet(bundle->bond, e->mac, e->vlan);
+ if (ret) {
+ error = ret;
+ n_errors++;
+ }
+ n_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 "
+ "packets, last error was: %s",
+ bundle->name, n_errors, n_packets, strerror(error));
+ } else {
+ VLOG_DBG("bond %s: sent %d gratuitous learning packets",
+ bundle->name, n_packets);
+ }
+}
+
+static void
+bundle_run(struct ofbundle *bundle)
+{
+ if (bundle->lacp) {
+ lacp_run(bundle->lacp, send_pdu_cb);
+ }
+ if (bundle->bond) {
+ struct ofport_dpif *port;
+
+ LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
+ bool may_enable = lacp_slave_may_enable(bundle->lacp, port);
+ bond_slave_set_lacp_may_enable(bundle->bond, port, may_enable);
+ }
+
+ bond_run(bundle->bond, &bundle->ofproto->revalidate_set,
+ lacp_negotiated(bundle->lacp));
+ if (bond_should_send_learning_packets(bundle->bond)) {
+ bundle_send_learning_packets(bundle);
+ }
+ }
+}
+
+static void
+bundle_wait(struct ofbundle *bundle)
+{
+ if (bundle->lacp) {
+ lacp_wait(bundle->lacp);
+ }
+ if (bundle->bond) {
+ bond_wait(bundle->bond);
+ }
+}
+\f
+/* Mirrors. */
+
+static int
+mirror_scan(struct ofproto_dpif *ofproto)
+{
+ int idx;
+
+ for (idx = 0; idx < MAX_MIRRORS; idx++) {
+ if (!ofproto->mirrors[idx]) {
+ return idx;
+ }
+ }
+ return -1;
+}
+
+static struct ofmirror *
+mirror_lookup(struct ofproto_dpif *ofproto, void *aux)
+{
+ int i;
+
+ for (i = 0; i < MAX_MIRRORS; i++) {
+ struct ofmirror *mirror = ofproto->mirrors[i];
+ if (mirror && mirror->aux == aux) {
+ return mirror;
+ }
+ }
+
+ return NULL;
+}
+
+static int
+mirror_set(struct ofproto *ofproto_, void *aux,
+ const struct ofproto_mirror_settings *s)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ mirror_mask_t mirror_bit;
+ struct ofbundle *bundle;
+ struct ofmirror *mirror;
+ struct ofbundle *out;
+ struct hmapx srcs; /* Contains "struct ofbundle *"s. */
+ struct hmapx dsts; /* Contains "struct ofbundle *"s. */
+ int out_vlan;
+
+ mirror = mirror_lookup(ofproto, aux);
+ if (!s) {
+ mirror_destroy(mirror);
+ return 0;
+ }
+ if (!mirror) {
+ int idx;
+
+ idx = mirror_scan(ofproto);
+ if (idx < 0) {
+ VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
+ "cannot create %s",
+ ofproto->up.name, MAX_MIRRORS, s->name);
+ return EFBIG;
+ }
+
+ mirror = ofproto->mirrors[idx] = xzalloc(sizeof *mirror);
+ mirror->ofproto = ofproto;
+ mirror->idx = idx;
+ mirror->out_vlan = -1;
+ mirror->name = NULL;
+ }
+
+ if (!mirror->name || strcmp(s->name, mirror->name)) {
+ free(mirror->name);
+ mirror->name = xstrdup(s->name);
+ }
+
+ /* Get the new configuration. */
+ if (s->out_bundle) {
+ out = bundle_lookup(ofproto, s->out_bundle);
+ if (!out) {
+ mirror_destroy(mirror);
+ return EINVAL;
+ }
+ out_vlan = -1;
+ } else {
+ out = NULL;
+ out_vlan = s->out_vlan;
+ }
+ bundle_lookup_multiple(ofproto, s->srcs, s->n_srcs, &srcs);
+ bundle_lookup_multiple(ofproto, s->dsts, s->n_dsts, &dsts);
+
+ /* If the configuration has not changed, do nothing. */
+ if (hmapx_equals(&srcs, &mirror->srcs)
+ && hmapx_equals(&dsts, &mirror->dsts)
+ && vlan_bitmap_equal(mirror->vlans, s->src_vlans)
+ && mirror->out == out
+ && mirror->out_vlan == out_vlan)
+ {
+ hmapx_destroy(&srcs);
+ hmapx_destroy(&dsts);
+ return 0;
+ }
+
+ hmapx_swap(&srcs, &mirror->srcs);
+ hmapx_destroy(&srcs);
+
+ hmapx_swap(&dsts, &mirror->dsts);
+ hmapx_destroy(&dsts);
+
+ free(mirror->vlans);
+ mirror->vlans = vlan_bitmap_clone(s->src_vlans);
+
+ mirror->out = out;
+ mirror->out_vlan = out_vlan;
+
+ /* Update bundles. */
+ mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
+ HMAP_FOR_EACH (bundle, hmap_node, &mirror->ofproto->bundles) {
+ if (hmapx_contains(&mirror->srcs, bundle)) {
+ bundle->src_mirrors |= mirror_bit;
+ } else {
+ bundle->src_mirrors &= ~mirror_bit;
+ }
+
+ if (hmapx_contains(&mirror->dsts, bundle)) {
+ bundle->dst_mirrors |= mirror_bit;
+ } else {
+ bundle->dst_mirrors &= ~mirror_bit;
+ }
+
+ if (mirror->out == bundle) {
+ bundle->mirror_out |= mirror_bit;
+ } else {
+ bundle->mirror_out &= ~mirror_bit;
+ }
+ }
+
+ ofproto->need_revalidate = true;
+ mac_learning_flush(ofproto->ml);
+
+ return 0;
+}
+
+static void
+mirror_destroy(struct ofmirror *mirror)
+{
+ struct ofproto_dpif *ofproto;
+ mirror_mask_t mirror_bit;
+ struct ofbundle *bundle;
+
+ if (!mirror) {
+ return;
+ }
+
+ ofproto = mirror->ofproto;
+ ofproto->need_revalidate = true;
+ mac_learning_flush(ofproto->ml);
+
+ mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
+ HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
+ bundle->src_mirrors &= ~mirror_bit;
+ bundle->dst_mirrors &= ~mirror_bit;
+ bundle->mirror_out &= ~mirror_bit;
+ }
+
+ hmapx_destroy(&mirror->srcs);
+ hmapx_destroy(&mirror->dsts);
+ free(mirror->vlans);
+
+ ofproto->mirrors[mirror->idx] = NULL;
+ free(mirror->name);
+ free(mirror);
+}
+
+static int
+set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) {
+ ofproto->need_revalidate = true;
+ mac_learning_flush(ofproto->ml);
+ }
+ return 0;
+}
+
+static bool
+is_mirror_output_bundle(struct ofproto *ofproto_, void *aux)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ struct ofbundle *bundle = bundle_lookup(ofproto, aux);
+ return bundle && bundle->mirror_out != 0;
+}
+\f
+/* Ports. */
+
+static struct ofport_dpif *
+get_ofp_port(struct ofproto_dpif *ofproto, uint16_t ofp_port)
+{
+ return ofport_dpif_cast(ofproto_get_port(&ofproto->up, ofp_port));
+}
+
+static struct ofport_dpif *
+get_odp_port(struct ofproto_dpif *ofproto, uint32_t odp_port)
+{
+ return get_ofp_port(ofproto, odp_port_to_ofp_port(odp_port));
+}
+
+static void
+ofproto_port_from_dpif_port(struct ofproto_port *ofproto_port,
+ struct dpif_port *dpif_port)
+{
+ ofproto_port->name = dpif_port->name;
+ ofproto_port->type = dpif_port->type;
+ ofproto_port->ofp_port = odp_port_to_ofp_port(dpif_port->port_no);
+}
+
+static void
+port_run(struct ofport_dpif *ofport)
+{
+ if (ofport->cfm) {
+ cfm_run(ofport->cfm);
+
+ if (cfm_should_send_ccm(ofport->cfm)) {
+ struct ofpbuf packet;
+ struct ccm *ccm;
+
+ ofpbuf_init(&packet, 0);
+ ccm = eth_compose(&packet, eth_addr_ccm, ofport->up.opp.hw_addr,
+ ETH_TYPE_CFM, sizeof *ccm);
+ cfm_compose_ccm(ofport->cfm, ccm);
+ send_packet(ofproto_dpif_cast(ofport->up.ofproto),
+ ofport->odp_port, 0, &packet);
+ ofpbuf_uninit(&packet);
+ }
+ }
+}
+
+static void
+port_wait(struct ofport_dpif *ofport)
+{
+ if (ofport->cfm) {
+ cfm_wait(ofport->cfm);
+ }
+}
+
+static int
+port_query_by_name(const struct ofproto *ofproto_, const char *devname,
+ struct ofproto_port *ofproto_port)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ struct dpif_port dpif_port;
+ int error;
+
+ error = dpif_port_query_by_name(ofproto->dpif, devname, &dpif_port);
+ if (!error) {
+ ofproto_port_from_dpif_port(ofproto_port, &dpif_port);
+ }
+ return error;
+}
+
+static int
+port_add(struct ofproto *ofproto_, struct netdev *netdev, uint16_t *ofp_portp)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ uint16_t odp_port;
+ int error;
+
+ error = dpif_port_add(ofproto->dpif, netdev, &odp_port);
+ if (!error) {
+ *ofp_portp = odp_port_to_ofp_port(odp_port);
+ }
+ return error;
+}
+
+static int
+port_del(struct ofproto *ofproto_, uint16_t ofp_port)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ int error;
+
+ error = dpif_port_del(ofproto->dpif, ofp_port_to_odp_port(ofp_port));
+ if (!error) {
+ struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
+ if (ofport) {
+ /* The caller is going to close ofport->up.netdev. If this is a
+ * bonded port, then the bond is using that netdev, so remove it
+ * from the bond. The client will need to reconfigure everything
+ * after deleting ports, so then the slave will get re-added. */
+ bundle_remove(&ofport->up);
+ }
+ }
+ return error;
+}
+
+struct port_dump_state {
+ struct dpif_port_dump dump;
+ bool done;
+};
+
+static int
+port_dump_start(const struct ofproto *ofproto_, void **statep)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ struct port_dump_state *state;
+
+ *statep = state = xmalloc(sizeof *state);
+ dpif_port_dump_start(&state->dump, ofproto->dpif);
+ state->done = false;
+ return 0;
+}
+
+static int
+port_dump_next(const struct ofproto *ofproto_ OVS_UNUSED, void *state_,
+ struct ofproto_port *port)
+{
+ struct port_dump_state *state = state_;
+ struct dpif_port dpif_port;
+
+ if (dpif_port_dump_next(&state->dump, &dpif_port)) {
+ ofproto_port_from_dpif_port(port, &dpif_port);
+ return 0;
+ } else {
+ int error = dpif_port_dump_done(&state->dump);
+ state->done = true;
+ return error ? error : EOF;
+ }
+}
+
+static int
+port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_)
+{
+ struct port_dump_state *state = state_;
+
+ if (!state->done) {
+ dpif_port_dump_done(&state->dump);
+ }
+ free(state);
+ return 0;
+}
+
+static int
+port_poll(const struct ofproto *ofproto_, char **devnamep)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ return dpif_port_poll(ofproto->dpif, devnamep);
+}
+
+static void
+port_poll_wait(const struct ofproto *ofproto_)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ dpif_port_poll_wait(ofproto->dpif);
+}
+
+static int
+port_is_lacp_current(const struct ofport *ofport_)
+{
+ const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
+ return (ofport->bundle && ofport->bundle->lacp
+ ? lacp_slave_is_current(ofport->bundle->lacp, ofport)
+ : -1);
+}
+\f
+/* Upcall handling. */
+
+/* Given 'upcall', of type DPIF_UC_ACTION or DPIF_UC_MISS, sends an
+ * OFPT_PACKET_IN message to each OpenFlow controller as necessary according to
+ * their individual configurations.
+ *
+ * If 'clone' is true, the caller retains ownership of 'upcall->packet'.
+ * Otherwise, ownership is transferred to this function. */
+static void
+send_packet_in(struct ofproto_dpif *ofproto, struct dpif_upcall *upcall,
+ const struct flow *flow, bool clone)
+{
+ struct ofputil_packet_in pin;
+
+ pin.packet = upcall->packet;
+ pin.in_port = flow->in_port;
+ pin.reason = upcall->type == DPIF_UC_MISS ? OFPR_NO_MATCH : OFPR_ACTION;
+ pin.buffer_id = 0; /* not yet known */
+ pin.send_len = upcall->userdata;
+ connmgr_send_packet_in(ofproto->up.connmgr, &pin, flow,
+ clone ? NULL : upcall->packet);
+}
+
+static bool
+process_special(struct ofproto_dpif *ofproto, const struct flow *flow,
+ const struct ofpbuf *packet)
+{
+ if (cfm_should_process_flow(flow)) {
+ struct ofport_dpif *ofport = get_ofp_port(ofproto, flow->in_port);
+ if (ofport && ofport->cfm) {
+ cfm_process_heartbeat(ofport->cfm, packet);
+ }
+ return true;
+ } else if (flow->dl_type == htons(ETH_TYPE_LACP)) {
+ struct ofport_dpif *port = get_ofp_port(ofproto, flow->in_port);
+ if (port && port->bundle && port->bundle->lacp) {
+ const struct lacp_pdu *pdu = parse_lacp_packet(packet);
+ if (pdu) {
+ lacp_process_pdu(port->bundle->lacp, port, pdu);
+ }
+ return true;
+ }
+ }
+ return false;
+}
+
+static void
+handle_miss_upcall(struct ofproto_dpif *ofproto, struct dpif_upcall *upcall)
+{
+ struct facet *facet;
+ struct flow flow;
+
+ /* Obtain in_port and tun_id, at least. */
+ odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
+
+ /* Set header pointers in 'flow'. */
+ flow_extract(upcall->packet, flow.tun_id, flow.in_port, &flow);
+
+ /* Handle 802.1ag and LACP. */
+ if (process_special(ofproto, &flow, upcall->packet)) {
+ ofpbuf_delete(upcall->packet);
+ ofproto->n_matches++;
+ return;
+ }
+
+ /* Check with in-band control to see if this packet should be sent
+ * to the local port regardless of the flow table. */
+ if (connmgr_msg_in_hook(ofproto->up.connmgr, &flow, upcall->packet)) {
+ send_packet(ofproto, OFPP_LOCAL, 0, upcall->packet);
+ }
+
+ facet = facet_lookup_valid(ofproto, &flow);
+ if (!facet) {
+ struct rule_dpif *rule = rule_dpif_lookup(ofproto, &flow);
+ if (!rule) {
+ /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
+ struct ofport_dpif *port = get_ofp_port(ofproto, flow.in_port);
+ if (port) {
+ if (port->up.opp.config & htonl(OFPPC_NO_PACKET_IN)) {
+ COVERAGE_INC(ofproto_dpif_no_packet_in);
+ /* XXX install 'drop' flow entry */
+ ofpbuf_delete(upcall->packet);
+ return;
+ }
+ } else {
+ VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16,
+ flow.in_port);
+ }
+
+ send_packet_in(ofproto, upcall, &flow, false);
+ return;
+ }
+
+ facet = facet_create(rule, &flow, upcall->packet);
+ } else if (!facet->may_install) {
+ /* The facet is not installable, that is, we need to process every
+ * packet, so process the current packet's actions into 'facet'. */
+ facet_make_actions(ofproto, facet, upcall->packet);
+ }
+
+ if (facet->rule->up.cr.priority == FAIL_OPEN_PRIORITY) {
+ /*
+ * Extra-special case for fail-open mode.
+ *
+ * We are in fail-open mode and the packet matched the fail-open rule,
+ * but we are connected to a controller too. We should send the packet
+ * up to the controller in the hope that it will try to set up a flow
+ * and thereby allow us to exit fail-open.
+ *
+ * See the top-level comment in fail-open.c for more information.
+ */
+ send_packet_in(ofproto, upcall, &flow, true);
+ }
+
+ facet_execute(ofproto, facet, upcall->packet);
+ facet_install(ofproto, facet, false);
+ ofproto->n_matches++;
+}
+
+static void
+handle_upcall(struct ofproto_dpif *ofproto, struct dpif_upcall *upcall)
+{
+ struct flow flow;
+
+ switch (upcall->type) {
+ case DPIF_UC_ACTION:
+ COVERAGE_INC(ofproto_dpif_ctlr_action);
+ odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
+ send_packet_in(ofproto, upcall, &flow, false);
+ break;
+
+ case DPIF_UC_SAMPLE:
+ if (ofproto->sflow) {
+ odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
+ ofproto_sflow_received(ofproto->sflow, upcall, &flow);
+ }
+ ofpbuf_delete(upcall->packet);
+ break;
+
+ case DPIF_UC_MISS:
+ handle_miss_upcall(ofproto, upcall);
+ break;
+
+ case DPIF_N_UC_TYPES:
+ default:
+ VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32, upcall->type);
+ break;
+ }
+}
+\f
+/* Flow expiration. */
+
+static int facet_max_idle(const struct ofproto_dpif *);
+static void update_stats(struct ofproto_dpif *);
+static void rule_expire(struct rule_dpif *);
+static void expire_facets(struct ofproto_dpif *, 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
+ * importantly when they last were used, and then use that information to
+ * expire flows that have not been used recently.
+ *
+ * Returns the number of milliseconds after which it should be called again. */
+static int
+expire(struct ofproto_dpif *ofproto)
+{
+ struct rule_dpif *rule, *next_rule;
+ struct cls_cursor cursor;
+ int dp_max_idle;
+
+ /* Update stats for each flow in the datapath. */
+ update_stats(ofproto);
+
+ /* Expire facets that have been idle too long. */
+ dp_max_idle = facet_max_idle(ofproto);
+ expire_facets(ofproto, dp_max_idle);
+
+ /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
+ cls_cursor_init(&cursor, &ofproto->up.tables[0], NULL);
+ CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
+ rule_expire(rule);
+ }
+
+ /* All outstanding data in existing flows has been accounted, so it's a
+ * good time to do bond rebalancing. */
+ if (ofproto->has_bonded_bundles) {
+ struct ofbundle *bundle;
+
+ HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
+ if (bundle->bond) {
+ bond_rebalance(bundle->bond, &ofproto->revalidate_set);
+ }
+ }
+ }
+
+ return MIN(dp_max_idle, 1000);
+}
+
+/* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
+ *
+ * This function also pushes statistics updates to rules which each facet
+ * resubmits into. Generally these statistics will be accurate. However, if a
+ * facet changes the rule it resubmits into at some time in between
+ * update_stats() runs, it is possible that statistics accrued to the
+ * old rule will be incorrectly attributed to the new rule. This could be
+ * avoided by calling update_stats() whenever rules are created or
+ * deleted. However, the performance impact of making so many calls to the
+ * datapath do not justify the benefit of having perfectly accurate statistics.
+ */
+static void
+update_stats(struct ofproto_dpif *p)
+{
+ const struct dpif_flow_stats *stats;
+ struct dpif_flow_dump dump;
+ const struct nlattr *key;
+ size_t key_len;
+
+ dpif_flow_dump_start(&dump, p->dpif);
+ while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) {
+ struct facet *facet;
+ struct flow flow;
+
+ if (odp_flow_key_to_flow(key, key_len, &flow)) {
+ struct ds s;
+
+ ds_init(&s);
+ odp_flow_key_format(key, key_len, &s);
+ VLOG_WARN_RL(&rl, "failed to convert ODP flow key to flow: %s",
+ ds_cstr(&s));
+ ds_destroy(&s);
+
+ continue;
+ }
+ facet = facet_find(p, &flow);
+
+ if (facet && facet->installed) {
+
+ if (stats->n_packets >= facet->dp_packet_count) {
+ uint64_t extra = stats->n_packets - facet->dp_packet_count;
+ facet->packet_count += extra;
+ } else {
+ VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
+ }
+
+ if (stats->n_bytes >= facet->dp_byte_count) {
+ facet->byte_count += stats->n_bytes - facet->dp_byte_count;
+ } else {
+ VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
+ }
+
+ facet->dp_packet_count = stats->n_packets;
+ facet->dp_byte_count = stats->n_bytes;
+
+ facet_update_time(p, facet, stats->used);
+ facet_account(p, facet, stats->n_bytes);
+ facet_push_stats(facet);
+ } else {
+ /* There's a flow in the datapath that we know nothing about.
+ * Delete it. */
+ COVERAGE_INC(facet_unexpected);
+ dpif_flow_del(p->dpif, key, key_len, NULL);
+ }
+ }
+ dpif_flow_dump_done(&dump);
+}
+
+/* Calculates and returns the number of milliseconds of idle time after which
+ * facets should expire from the datapath and we should fold their statistics
+ * into their parent rules in userspace. */
+static int
+facet_max_idle(const struct ofproto_dpif *ofproto)
+{
+ /*
+ * Idle time histogram.
+ *
+ * Most of the time a switch has a relatively small number of facets. When
+ * this is the case we might as well keep statistics for all of them in
+ * userspace and to cache them in the kernel datapath for performance as
+ * well.
+ *
+ * As the number of facets increases, the memory required to maintain
+ * statistics about them in userspace and in the kernel becomes
+ * significant. However, with a large number of facets it is likely that
+ * only a few of them are "heavy hitters" that consume a large amount of
+ * bandwidth. At this point, only heavy hitters are worth caching in the
+ * kernel and maintaining in userspaces; other facets we can discard.
+ *
+ * The technique used to compute the idle time is to build a histogram with
+ * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each facet
+ * 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 facets (but at least 1000 flows) are kept
+ * cached. At least the most-recently-used bucket of facets is kept, so
+ * actually an arbitrary number of facets can be kept in any given
+ * expiration run (though the next run will delete most of those unless
+ * they receive additional data).
+ *
+ * This requires a second pass through the facets, in addition to the pass
+ * made by update_stats(), because the former function never looks
+ * at uninstallable facets.
+ */
+ enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) };
+ enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
+ int buckets[N_BUCKETS] = { 0 };
+ struct facet *facet;
+ int total, bucket;
+ long long int now;
+ int i;
+
+ total = hmap_count(&ofproto->facets);
+ if (total <= 1000) {
+ return N_BUCKETS * BUCKET_WIDTH;
+ }
+
+ /* Build histogram. */
+ now = time_msec();
+ HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
+ long long int idle = now - facet->used;
+ int bucket = (idle <= 0 ? 0
+ : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
+ : (unsigned int) idle / BUCKET_WIDTH);
+ buckets[bucket]++;
+ }
+
+ /* Find the first bucket whose flows should be expired. */
+ for (bucket = 0; bucket < N_BUCKETS; bucket++) {
+ if (buckets[bucket]) {
+ int subtotal = 0;
+ do {
+ subtotal += buckets[bucket++];
+ } while (bucket < N_BUCKETS && subtotal < MAX(1000, total / 100));
+ break;
+ }
+ }
+
+ if (VLOG_IS_DBG_ENABLED()) {
+ struct ds s;
+
+ ds_init(&s);
+ ds_put_cstr(&s, "keep");
+ for (i = 0; i < N_BUCKETS; i++) {
+ if (i == bucket) {
+ ds_put_cstr(&s, ", drop");
+ }
+ if (buckets[i]) {
+ ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
+ }
+ }
+ VLOG_INFO("%s: %s (msec:count)", ofproto->up.name, ds_cstr(&s));
+ ds_destroy(&s);
+ }
+
+ return bucket * BUCKET_WIDTH;
+}
+
+static void
+facet_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet)
+{
+ if (ofproto->netflow && !facet_is_controller_flow(facet) &&
+ netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
+ struct ofexpired expired;
+
+ if (facet->installed) {
+ struct dpif_flow_stats stats;
+
+ facet_put__(ofproto, facet, facet->actions, facet->actions_len,
+ &stats);
+ facet_update_stats(ofproto, facet, &stats);
+ }
+
+ expired.flow = facet->flow;
+ expired.packet_count = facet->packet_count;
+ expired.byte_count = facet->byte_count;
+ expired.used = facet->used;
+ netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
+ }
+}
+
+static void
+expire_facets(struct ofproto_dpif *ofproto, int dp_max_idle)
+{
+ long long int cutoff = time_msec() - dp_max_idle;
+ struct facet *facet, *next_facet;
+
+ HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) {
+ facet_active_timeout(ofproto, facet);
+ if (facet->used < cutoff) {
+ facet_remove(ofproto, facet);
+ }
+ }
+}
+
+/* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
+ * then delete it entirely. */
+static void
+rule_expire(struct rule_dpif *rule)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
+ struct facet *facet, *next_facet;
+ long long int now;
+ uint8_t reason;
+
+ /* Has 'rule' expired? */
+ now = time_msec();
+ if (rule->up.hard_timeout
+ && now > rule->up.created + rule->up.hard_timeout * 1000) {
+ reason = OFPRR_HARD_TIMEOUT;
+ } else if (rule->up.idle_timeout && list_is_empty(&rule->facets)
+ && now > rule->used + rule->up.idle_timeout * 1000) {
+ reason = OFPRR_IDLE_TIMEOUT;
+ } else {
+ return;
+ }
+
+ COVERAGE_INC(ofproto_dpif_expired);
+
+ /* Update stats. (This is a no-op if the rule expired due to an idle
+ * timeout, because that only happens when the rule has no facets left.) */
+ LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
+ facet_remove(ofproto, facet);
+ }
+
+ /* Get rid of the rule. */
+ ofproto_rule_expire(&rule->up, reason);
+}
+\f
+/* Facets. */
+
+/* Creates and returns a new facet owned by 'rule', given a 'flow' and an
+ * example 'packet' within that flow.
+ *
+ * The caller must already have determined that no facet with an identical
+ * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
+ * the ofproto's classifier table. */
+static struct facet *
+facet_create(struct rule_dpif *rule, const struct flow *flow,
+ const struct ofpbuf *packet)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
+ struct facet *facet;
+
+ facet = xzalloc(sizeof *facet);
+ facet->used = time_msec();
+ hmap_insert(&ofproto->facets, &facet->hmap_node, flow_hash(flow, 0));
+ list_push_back(&rule->facets, &facet->list_node);
+ facet->rule = rule;
+ facet->flow = *flow;
+ netflow_flow_init(&facet->nf_flow);
+ netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
+
+ facet_make_actions(ofproto, facet, packet);
+
+ return facet;
+}
+
+static void
+facet_free(struct facet *facet)
+{
+ free(facet->actions);
+ free(facet);
+}
+
+/* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
+ * 'packet', which arrived on 'in_port'.
+ *
+ * Takes ownership of 'packet'. */
+static bool
+execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow,
+ const struct nlattr *odp_actions, size_t actions_len,
+ struct ofpbuf *packet)
+{
+ if (actions_len == NLA_ALIGN(NLA_HDRLEN + sizeof(uint64_t))
+ && odp_actions->nla_type == ODP_ACTION_ATTR_CONTROLLER) {
+ /* As an optimization, avoid a round-trip from userspace to kernel to
+ * userspace. This also avoids possibly filling up kernel packet
+ * buffers along the way. */
+ struct dpif_upcall upcall;
+
+ upcall.type = DPIF_UC_ACTION;
+ upcall.packet = packet;
+ upcall.key = NULL;
+ upcall.key_len = 0;
+ upcall.userdata = nl_attr_get_u64(odp_actions);
+ upcall.sample_pool = 0;
+ upcall.actions = NULL;
+ upcall.actions_len = 0;
+
+ send_packet_in(ofproto, &upcall, flow, false);
+
+ return true;
+ } else {
+ int error;
+
+ error = dpif_execute(ofproto->dpif, odp_actions, actions_len, packet);
+ ofpbuf_delete(packet);
+ return !error;
+ }
+}
+
+/* Executes the actions indicated by 'facet' on 'packet' and credits 'facet''s
+ * statistics appropriately. 'packet' must have at least sizeof(struct
+ * ofp_packet_in) bytes of headroom.
+ *
+ * For correct results, 'packet' must actually be in 'facet''s flow; that is,
+ * applying flow_extract() to 'packet' would yield the same flow as
+ * 'facet->flow'.
+ *
+ * 'facet' must have accurately composed ODP actions; that is, it must not be
+ * in need of revalidation.
+ *
+ * Takes ownership of 'packet'. */
+static void
+facet_execute(struct ofproto_dpif *ofproto, struct facet *facet,
+ struct ofpbuf *packet)
+{
+ struct dpif_flow_stats stats;
+
+ assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in));
+
+ flow_extract_stats(&facet->flow, packet, &stats);
+ stats.used = time_msec();
+ if (execute_odp_actions(ofproto, &facet->flow,
+ facet->actions, facet->actions_len, packet)) {
+ facet_update_stats(ofproto, facet, &stats);
+ }
+}
+
+/* Remove 'facet' from 'ofproto' and free up the associated memory:
+ *
+ * - If 'facet' was installed in the datapath, uninstalls it and updates its
+ * rule's statistics, via facet_uninstall().
+ *
+ * - Removes 'facet' from its rule and from ofproto->facets.
+ */
+static void
+facet_remove(struct ofproto_dpif *ofproto, struct facet *facet)
+{
+ facet_uninstall(ofproto, facet);
+ facet_flush_stats(ofproto, facet);
+ hmap_remove(&ofproto->facets, &facet->hmap_node);
+ list_remove(&facet->list_node);
+ facet_free(facet);
+}
+
+/* Composes the ODP actions for 'facet' based on its rule's actions. */
+static void
+facet_make_actions(struct ofproto_dpif *p, struct facet *facet,
+ const struct ofpbuf *packet)
+{
+ const struct rule_dpif *rule = facet->rule;
+ struct ofpbuf *odp_actions;
+ struct action_xlate_ctx ctx;
+
+ action_xlate_ctx_init(&ctx, p, &facet->flow, packet);
+ odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
+ facet->tags = ctx.tags;
+ facet->may_install = ctx.may_set_up_flow;
+ facet->nf_flow.output_iface = ctx.nf_output_iface;
+
+ if (facet->actions_len != odp_actions->size
+ || memcmp(facet->actions, odp_actions->data, odp_actions->size)) {
+ free(facet->actions);
+ facet->actions_len = odp_actions->size;
+ facet->actions = xmemdup(odp_actions->data, odp_actions->size);
+ }
+
+ ofpbuf_delete(odp_actions);
+}
+
+static int
+facet_put__(struct ofproto_dpif *ofproto, struct facet *facet,
+ const struct nlattr *actions, size_t actions_len,
+ struct dpif_flow_stats *stats)
+{
+ struct odputil_keybuf keybuf;
+ enum dpif_flow_put_flags flags;
+ struct ofpbuf key;
+
+ flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
+ if (stats) {
+ flags |= DPIF_FP_ZERO_STATS;
+ facet->dp_packet_count = 0;
+ facet->dp_byte_count = 0;
+ }
+
+ ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
+ odp_flow_key_from_flow(&key, &facet->flow);
+
+ return dpif_flow_put(ofproto->dpif, flags, key.data, key.size,
+ actions, actions_len, stats);
+}
+
+/* If 'facet' is installable, inserts or re-inserts it into 'p''s datapath. If
+ * 'zero_stats' is true, clears any existing statistics from the datapath for
+ * 'facet'. */
+static void
+facet_install(struct ofproto_dpif *p, struct facet *facet, bool zero_stats)
+{
+ struct dpif_flow_stats stats;
+
+ if (facet->may_install
+ && !facet_put__(p, facet, facet->actions, facet->actions_len,
+ zero_stats ? &stats : NULL)) {
+ facet->installed = true;
+ }
+}
+
+static void
+facet_account(struct ofproto_dpif *ofproto,
+ struct facet *facet, uint64_t extra_bytes)
+{
+ uint64_t total_bytes, n_bytes;
+ struct ofbundle *in_bundle;
+ const struct nlattr *a;
+ tag_type dummy = 0;
+ unsigned int left;
+ int vlan;
+
+ total_bytes = facet->byte_count + extra_bytes;
+ if (total_bytes <= facet->accounted_bytes) {
+ return;
+ }
+ n_bytes = total_bytes - facet->accounted_bytes;
+ facet->accounted_bytes = total_bytes;
+
+ /* Test that 'tags' is nonzero to ensure that only flows that include an
+ * OFPP_NORMAL action are used for learning and bond slave rebalancing.
+ * This works because OFPP_NORMAL always sets a nonzero tag value.
+ *
+ * Feed information from the active flows back into the learning table to
+ * ensure that table is always in sync with what is actually flowing
+ * through the datapath. */
+ if (!facet->tags
+ || !is_admissible(ofproto, &facet->flow, false, &dummy,
+ &vlan, &in_bundle)) {
+ return;
+ }
+
+ update_learning_table(ofproto, &facet->flow, vlan, in_bundle);
+
+ if (!ofproto->has_bonded_bundles) {
+ return;
+ }
+ NL_ATTR_FOR_EACH_UNSAFE (a, left, facet->actions, facet->actions_len) {
+ if (nl_attr_type(a) == ODP_ACTION_ATTR_OUTPUT) {
+ struct ofport_dpif *port;
+
+ port = get_odp_port(ofproto, nl_attr_get_u32(a));
+ if (port && port->bundle && port->bundle->bond) {
+ bond_account(port->bundle->bond, &facet->flow, vlan, n_bytes);
+ }
+ }
+ }
+}
+
+/* If 'rule' is installed in the datapath, uninstalls it. */
+static void
+facet_uninstall(struct ofproto_dpif *p, struct facet *facet)
+{
+ if (facet->installed) {
+ struct odputil_keybuf keybuf;
+ struct dpif_flow_stats stats;
+ struct ofpbuf key;
+
+ ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
+ odp_flow_key_from_flow(&key, &facet->flow);
+
+ if (!dpif_flow_del(p->dpif, key.data, key.size, &stats)) {
+ facet_update_stats(p, facet, &stats);
+ }
+ facet->installed = false;
+ facet->dp_packet_count = 0;
+ facet->dp_byte_count = 0;
+ } else {
+ assert(facet->dp_packet_count == 0);
+ assert(facet->dp_byte_count == 0);
+ }
+}
+
+/* Returns true if the only action for 'facet' is to send to the controller.
+ * (We don't report NetFlow expiration messages for such facets because they
+ * are just part of the control logic for the network, not real traffic). */
+static bool
+facet_is_controller_flow(struct facet *facet)
+{
+ return (facet
+ && facet->rule->up.n_actions == 1
+ && action_outputs_to_port(&facet->rule->up.actions[0],
+ htons(OFPP_CONTROLLER)));
+}
+
+/* Folds all of 'facet''s statistics into its rule. Also updates the
+ * accounting ofhook and emits a NetFlow expiration if appropriate. All of
+ * 'facet''s statistics in the datapath should have been zeroed and folded into
+ * its packet and byte counts before this function is called. */
+static void
+facet_flush_stats(struct ofproto_dpif *ofproto, struct facet *facet)
+{
+ assert(!facet->dp_byte_count);
+ assert(!facet->dp_packet_count);
+
+ facet_push_stats(facet);
+ facet_account(ofproto, facet, 0);
+
+ if (ofproto->netflow && !facet_is_controller_flow(facet)) {
+ struct ofexpired expired;
+ expired.flow = facet->flow;
+ expired.packet_count = facet->packet_count;
+ expired.byte_count = facet->byte_count;
+ expired.used = facet->used;
+ netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
+ }
+
+ facet->rule->packet_count += facet->packet_count;
+ facet->rule->byte_count += facet->byte_count;
+
+ /* Reset counters to prevent double counting if 'facet' ever gets
+ * reinstalled. */
+ facet->packet_count = 0;
+ facet->byte_count = 0;
+ facet->rs_packet_count = 0;
+ facet->rs_byte_count = 0;
+ facet->accounted_bytes = 0;
+
+ netflow_flow_clear(&facet->nf_flow);
+}
+
+/* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
+ * Returns it if found, otherwise a null pointer.
+ *
+ * The returned facet might need revalidation; use facet_lookup_valid()
+ * instead if that is important. */
+static struct facet *
+facet_find(struct ofproto_dpif *ofproto, const struct flow *flow)
+{
+ struct facet *facet;
+
+ HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, flow_hash(flow, 0),
+ &ofproto->facets) {
+ if (flow_equal(flow, &facet->flow)) {
+ return facet;
+ }
+ }
+
+ return NULL;
+}
+
+/* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
+ * Returns it if found, otherwise a null pointer.
+ *
+ * The returned facet is guaranteed to be valid. */
+static struct facet *
+facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow)
+{
+ struct facet *facet = facet_find(ofproto, flow);
+
+ /* The facet we found might not be valid, since we could be in need of
+ * revalidation. If it is not valid, don't return it. */
+ if (facet
+ && ofproto->need_revalidate
+ && !facet_revalidate(ofproto, facet)) {
+ COVERAGE_INC(facet_invalidated);
+ return NULL;
+ }
+
+ return facet;
+}
+
+/* Re-searches 'ofproto''s classifier for a rule matching 'facet':
+ *
+ * - If the rule found is different from 'facet''s current rule, moves
+ * 'facet' to the new rule and recompiles its actions.
+ *
+ * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
+ * where it is and recompiles its actions anyway.
+ *
+ * - If there is none, destroys 'facet'.
+ *
+ * Returns true if 'facet' still exists, false if it has been destroyed. */
+static bool
+facet_revalidate(struct ofproto_dpif *ofproto, struct facet *facet)
+{
+ struct action_xlate_ctx ctx;
+ struct ofpbuf *odp_actions;
+ struct rule_dpif *new_rule;
+ bool actions_changed;
+
+ COVERAGE_INC(facet_revalidate);
+
+ /* Determine the new rule. */
+ new_rule = rule_dpif_lookup(ofproto, &facet->flow);
+ if (!new_rule) {
+ /* No new rule, so delete the facet. */
+ facet_remove(ofproto, facet);
+ return false;
+ }
+
+ /* Calculate new ODP actions.
+ *
+ * We do not modify any 'facet' state yet, because we might need to, e.g.,
+ * emit a NetFlow expiration and, if so, we need to have the old state
+ * around to properly compose it. */
+ action_xlate_ctx_init(&ctx, ofproto, &facet->flow, NULL);
+ odp_actions = xlate_actions(&ctx,
+ new_rule->up.actions, new_rule->up.n_actions);
+ actions_changed = (facet->actions_len != odp_actions->size
+ || memcmp(facet->actions, odp_actions->data,
+ facet->actions_len));
+
+ /* If the ODP actions changed or the installability changed, then we need
+ * to talk to the datapath. */
+ if (actions_changed || ctx.may_set_up_flow != facet->installed) {
+ if (ctx.may_set_up_flow) {
+ struct dpif_flow_stats stats;
+
+ facet_put__(ofproto, facet,
+ odp_actions->data, odp_actions->size, &stats);
+ facet_update_stats(ofproto, facet, &stats);
+ } else {
+ facet_uninstall(ofproto, facet);
+ }
+
+ /* The datapath flow is gone or has zeroed stats, so push stats out of
+ * 'facet' into 'rule'. */
+ facet_flush_stats(ofproto, facet);
+ }
+
+ /* Update 'facet' now that we've taken care of all the old state. */
+ facet->tags = ctx.tags;
+ facet->nf_flow.output_iface = ctx.nf_output_iface;
+ facet->may_install = ctx.may_set_up_flow;
+ if (actions_changed) {
+ free(facet->actions);
+ facet->actions_len = odp_actions->size;
+ facet->actions = xmemdup(odp_actions->data, odp_actions->size);
+ }
+ if (facet->rule != new_rule) {
+ COVERAGE_INC(facet_changed_rule);
+ list_remove(&facet->list_node);
+ list_push_back(&new_rule->facets, &facet->list_node);
+ facet->rule = new_rule;
+ facet->used = new_rule->up.created;
+ facet->rs_used = facet->used;
+ }
+
+ ofpbuf_delete(odp_actions);
+
+ return true;
+}
+
+/* Updates 'facet''s used time. Caller is responsible for calling
+ * facet_push_stats() to update the flows which 'facet' resubmits into. */
+static void
+facet_update_time(struct ofproto_dpif *ofproto, struct facet *facet,
+ long long int used)
+{
+ if (used > facet->used) {
+ facet->used = used;
+ if (used > facet->rule->used) {
+ facet->rule->used = used;
+ }
+ netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, used);
+ }
+}
+
+/* Folds the statistics from 'stats' into the counters in 'facet'.
+ *
+ * Because of the meaning of a facet's counters, it only makes sense to do this
+ * if 'stats' are not tracked in the datapath, that is, if 'stats' represents a
+ * packet that was sent by hand or if it represents statistics that have been
+ * cleared out of the datapath. */
+static void
+facet_update_stats(struct ofproto_dpif *ofproto, struct facet *facet,
+ const struct dpif_flow_stats *stats)
+{
+ if (stats->n_packets || stats->used > facet->used) {
+ facet_update_time(ofproto, facet, stats->used);
+ facet->packet_count += stats->n_packets;
+ facet->byte_count += stats->n_bytes;
+ facet_push_stats(facet);
+ netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags);
+ }
+}
+
+static void
+facet_push_stats(struct facet *facet)
+{
+ uint64_t rs_packets, rs_bytes;
+
+ assert(facet->packet_count >= facet->rs_packet_count);
+ assert(facet->byte_count >= facet->rs_byte_count);
+ assert(facet->used >= facet->rs_used);
+
+ rs_packets = facet->packet_count - facet->rs_packet_count;
+ rs_bytes = facet->byte_count - facet->rs_byte_count;
+
+ if (rs_packets || rs_bytes || facet->used > facet->rs_used) {
+ facet->rs_packet_count = facet->packet_count;
+ facet->rs_byte_count = facet->byte_count;
+ facet->rs_used = facet->used;
+
+ flow_push_stats(facet->rule, &facet->flow,
+ rs_packets, rs_bytes, facet->used);
+ }
+}
+
+struct ofproto_push {
+ struct action_xlate_ctx ctx;
+ uint64_t packets;
+ uint64_t bytes;
+ long long int used;
+};
+
+static void
+push_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
+{
+ struct ofproto_push *push = CONTAINER_OF(ctx, struct ofproto_push, ctx);
+
+ if (rule) {
+ rule->packet_count += push->packets;
+ rule->byte_count += push->bytes;
+ rule->used = MAX(push->used, rule->used);
+ }
+}
+
+/* Pushes flow statistics to the rules which 'flow' resubmits into given
+ * 'rule''s actions. */
+static void
+flow_push_stats(const struct rule_dpif *rule,
+ struct flow *flow, uint64_t packets, uint64_t bytes,
+ long long int used)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
+ struct ofproto_push push;
+
+ push.packets = packets;
+ push.bytes = bytes;
+ push.used = used;
+
+ action_xlate_ctx_init(&push.ctx, ofproto, flow, NULL);
+ push.ctx.resubmit_hook = push_resubmit;
+ ofpbuf_delete(xlate_actions(&push.ctx,
+ rule->up.actions, rule->up.n_actions));
+}
+\f
+/* Rules. */
+
+static struct rule_dpif *
+rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow)
+{
+ return rule_dpif_cast(rule_from_cls_rule(
+ classifier_lookup(&ofproto->up.tables[0],
+ flow)));
+}
+
+static struct rule *
+rule_alloc(void)
+{
+ struct rule_dpif *rule = xmalloc(sizeof *rule);
+ return &rule->up;
+}
+
+static void
+rule_dealloc(struct rule *rule_)
+{
+ struct rule_dpif *rule = rule_dpif_cast(rule_);
+ free(rule);
+}
+
+static int
+rule_construct(struct rule *rule_)
+{
+ struct rule_dpif *rule = rule_dpif_cast(rule_);
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
+ struct rule_dpif *old_rule;
+ int error;
+
+ error = validate_actions(rule->up.actions, rule->up.n_actions,
+ &rule->up.cr.flow, ofproto->max_ports);
+ if (error) {
+ return error;
+ }
+
+ old_rule = rule_dpif_cast(rule_from_cls_rule(classifier_find_rule_exactly(
+ &ofproto->up.tables[0],
+ &rule->up.cr)));
+ if (old_rule) {
+ ofproto_rule_destroy(&old_rule->up);
+ }
+
+ rule->used = rule->up.created;
+ rule->packet_count = 0;
+ rule->byte_count = 0;
+ list_init(&rule->facets);
+ classifier_insert(&ofproto->up.tables[0], &rule->up.cr);
+
+ ofproto->need_revalidate = true;
+
+ return 0;
+}
+
+static void
+rule_destruct(struct rule *rule_)
+{
+ struct rule_dpif *rule = rule_dpif_cast(rule_);
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
+ struct facet *facet, *next_facet;
+
+ classifier_remove(&ofproto->up.tables[0], &rule->up.cr);
+ LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
+ facet_revalidate(ofproto, facet);
+ }
+ ofproto->need_revalidate = true;
+}
+
+static void
+rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes)
+{
+ struct rule_dpif *rule = rule_dpif_cast(rule_);
+ struct facet *facet;
+
+ /* Start from historical data for 'rule' itself that are no longer tracked
+ * in facets. This counts, for example, facets that have expired. */
+ *packets = rule->packet_count;
+ *bytes = rule->byte_count;
+
+ /* Add any statistics that are tracked by facets. This includes
+ * statistical data recently updated by ofproto_update_stats() as well as
+ * stats for packets that were executed "by hand" via dpif_execute(). */
+ LIST_FOR_EACH (facet, list_node, &rule->facets) {
+ *packets += facet->packet_count;
+ *bytes += facet->byte_count;
+ }
+}
+
+static int
+rule_execute(struct rule *rule_, struct flow *flow, struct ofpbuf *packet)
+{
+ struct rule_dpif *rule = rule_dpif_cast(rule_);
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
+ struct action_xlate_ctx ctx;
+ struct ofpbuf *odp_actions;
+ struct facet *facet;
+ size_t size;
+
+ /* First look for a related facet. If we find one, account it to that. */
+ facet = facet_lookup_valid(ofproto, flow);
+ if (facet && facet->rule == rule) {
+ facet_execute(ofproto, facet, packet);
+ return 0;
+ }
+
+ /* Otherwise, if 'rule' is in fact the correct rule for 'packet', then
+ * create a new facet for it and use that. */
+ if (rule_dpif_lookup(ofproto, flow) == rule) {
+ facet = facet_create(rule, flow, packet);
+ facet_execute(ofproto, facet, packet);
+ facet_install(ofproto, facet, true);
+ return 0;
+ }
+
+ /* We can't account anything to a facet. If we were to try, then that
+ * facet would have a non-matching rule, busting our invariants. */
+ action_xlate_ctx_init(&ctx, ofproto, flow, packet);
+ odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
+ size = packet->size;
+ if (execute_odp_actions(ofproto, flow, odp_actions->data,
+ odp_actions->size, packet)) {
+ rule->used = time_msec();
+ rule->packet_count++;
+ rule->byte_count += size;
+ flow_push_stats(rule, flow, 1, size, rule->used);
+ }
+ ofpbuf_delete(odp_actions);
+
+ return 0;
+}
+
+static int
+rule_modify_actions(struct rule *rule_,
+ const union ofp_action *actions, size_t n_actions)
+{
+ struct rule_dpif *rule = rule_dpif_cast(rule_);
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
+ int error;
+
+ error = validate_actions(actions, n_actions, &rule->up.cr.flow,
+ ofproto->max_ports);
+ if (!error) {
+ ofproto->need_revalidate = true;
+ }
+ return error;
+}
+\f
+/* Sends 'packet' out of port 'odp_port' within 'ofproto'. If 'vlan_tci' is
+ * zero the packet will not have any 802.1Q hader; if it is nonzero, then the
+ * packet will be sent with the VLAN TCI specified by 'vlan_tci & ~VLAN_CFI'.
+ *
+ * Returns 0 if successful, otherwise a positive errno value. */
+static int
+send_packet(struct ofproto_dpif *ofproto, uint32_t odp_port, uint16_t vlan_tci,
+ const struct ofpbuf *packet)
+{
+ struct ofpbuf odp_actions;
+ int error;
+
+ ofpbuf_init(&odp_actions, 32);
+ if (vlan_tci != 0) {
+ nl_msg_put_u32(&odp_actions, ODP_ACTION_ATTR_SET_DL_TCI,
+ ntohs(vlan_tci & ~VLAN_CFI));
+ }
+ nl_msg_put_u32(&odp_actions, ODP_ACTION_ATTR_OUTPUT, odp_port);
+ error = dpif_execute(ofproto->dpif, odp_actions.data, odp_actions.size,
+ packet);
+ ofpbuf_uninit(&odp_actions);
+
+ if (error) {
+ VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)",
+ ofproto->up.name, odp_port, strerror(error));
+ }
+ return error;
+}
+\f
+/* OpenFlow to ODP action translation. */
+
+static void do_xlate_actions(const union ofp_action *in, size_t n_in,
+ struct action_xlate_ctx *ctx);
+static bool xlate_normal(struct action_xlate_ctx *);
+
+static void
+add_output_action(struct action_xlate_ctx *ctx, uint16_t ofp_port)
+{
+ const struct ofport_dpif *ofport = get_ofp_port(ctx->ofproto, ofp_port);
+ uint16_t odp_port = ofp_port_to_odp_port(ofp_port);
+
+ if (ofport) {
+ if (ofport->up.opp.config & htonl(OFPPC_NO_FWD)) {
+ /* Forwarding disabled on port. */
+ return;
+ }
+ } else {
+ /*
+ * We don't have an ofport record for this port, but it doesn't hurt to
+ * allow forwarding to it anyhow. Maybe such a port will appear later
+ * and we're pre-populating the flow table.
+ */
+ }
+
+ nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_OUTPUT, odp_port);
+ ctx->nf_output_iface = ofp_port;
+}
+
+static void
+xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port)
+{
+ if (ctx->recurse < MAX_RESUBMIT_RECURSION) {
+ struct rule_dpif *rule;
+ uint16_t old_in_port;
+
+ /* Look up a flow with 'in_port' as the input port. Then restore the
+ * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
+ * have surprising behavior). */
+ old_in_port = ctx->flow.in_port;
+ ctx->flow.in_port = in_port;
+ rule = rule_dpif_lookup(ctx->ofproto, &ctx->flow);
+ ctx->flow.in_port = old_in_port;
+
+ if (ctx->resubmit_hook) {
+ ctx->resubmit_hook(ctx, rule);
+ }
+
+ if (rule) {
+ ctx->recurse++;
+ do_xlate_actions(rule->up.actions, rule->up.n_actions, ctx);
+ ctx->recurse--;
+ }
+ } else {
+ static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1);
+
+ VLOG_ERR_RL(&recurse_rl, "NXAST_RESUBMIT recursed over %d times",
+ MAX_RESUBMIT_RECURSION);
+ }
+}
+
+static void
+flood_packets(struct ofproto_dpif *ofproto,
+ uint16_t ofp_in_port, ovs_be32 mask,
+ uint16_t *nf_output_iface, struct ofpbuf *odp_actions)
+{
+ struct ofport_dpif *ofport;
+
+ HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
+ uint16_t ofp_port = ofport->up.ofp_port;
+ if (ofp_port != ofp_in_port && !(ofport->up.opp.config & mask)) {
+ nl_msg_put_u32(odp_actions, ODP_ACTION_ATTR_OUTPUT,
+ ofport->odp_port);
+ }
+ }
+ *nf_output_iface = NF_OUT_FLOOD;
+}
+
+static void
+xlate_output_action__(struct action_xlate_ctx *ctx,
+ uint16_t port, uint16_t max_len)
+{
+ uint16_t prev_nf_output_iface = ctx->nf_output_iface;
+
+ ctx->nf_output_iface = NF_OUT_DROP;
+
+ switch (port) {
+ case OFPP_IN_PORT:
+ add_output_action(ctx, ctx->flow.in_port);
+ break;
+ case OFPP_TABLE:
+ xlate_table_action(ctx, ctx->flow.in_port);
+ break;
+ case OFPP_NORMAL:
+ xlate_normal(ctx);
+ break;
+ case OFPP_FLOOD:
+ flood_packets(ctx->ofproto, ctx->flow.in_port, htonl(OFPPC_NO_FLOOD),
+ &ctx->nf_output_iface, ctx->odp_actions);
+ break;
+ case OFPP_ALL:
+ flood_packets(ctx->ofproto, ctx->flow.in_port, htonl(0),
+ &ctx->nf_output_iface, ctx->odp_actions);
+ break;
+ case OFPP_CONTROLLER:
+ nl_msg_put_u64(ctx->odp_actions, ODP_ACTION_ATTR_CONTROLLER, max_len);
+ break;
+ case OFPP_LOCAL:
+ add_output_action(ctx, OFPP_LOCAL);
+ break;
+ default:
+ if (port != ctx->flow.in_port) {
+ add_output_action(ctx, port);
+ }
+ break;
+ }
+
+ if (prev_nf_output_iface == NF_OUT_FLOOD) {
+ ctx->nf_output_iface = NF_OUT_FLOOD;
+ } else if (ctx->nf_output_iface == NF_OUT_DROP) {
+ ctx->nf_output_iface = prev_nf_output_iface;
+ } else if (prev_nf_output_iface != NF_OUT_DROP &&
+ ctx->nf_output_iface != NF_OUT_FLOOD) {
+ ctx->nf_output_iface = NF_OUT_MULTI;
+ }
+}
+
+static void
+xlate_output_action(struct action_xlate_ctx *ctx,
+ const struct ofp_action_output *oao)
+{
+ xlate_output_action__(ctx, ntohs(oao->port), ntohs(oao->max_len));
+}
+
+/* If the final ODP action in 'ctx' is "pop priority", drop it, as an
+ * optimization, because we're going to add another action that sets the
+ * priority immediately after, or because there are no actions following the
+ * pop. */
+static void
+remove_pop_action(struct action_xlate_ctx *ctx)
+{
+ if (ctx->odp_actions->size == ctx->last_pop_priority) {
+ ctx->odp_actions->size -= NLA_ALIGN(NLA_HDRLEN);
+ ctx->last_pop_priority = -1;
+ }
+}
+
+static void
+add_pop_action(struct action_xlate_ctx *ctx)
+{
+ if (ctx->odp_actions->size != ctx->last_pop_priority) {
+ nl_msg_put_flag(ctx->odp_actions, ODP_ACTION_ATTR_POP_PRIORITY);
+ ctx->last_pop_priority = ctx->odp_actions->size;
+ }
+}
+
+static void
+xlate_enqueue_action(struct action_xlate_ctx *ctx,
+ const struct ofp_action_enqueue *oae)
+{
+ uint16_t ofp_port, odp_port;
+ uint32_t priority;
+ int error;
+
+ error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(oae->queue_id),
+ &priority);
+ if (error) {
+ /* Fall back to ordinary output action. */
+ xlate_output_action__(ctx, ntohs(oae->port), 0);
+ return;
+ }
+
+ /* Figure out ODP output port. */
+ ofp_port = ntohs(oae->port);
+ if (ofp_port == OFPP_IN_PORT) {
+ ofp_port = ctx->flow.in_port;
+ }
+ odp_port = ofp_port_to_odp_port(ofp_port);
+
+ /* Add ODP actions. */
+ remove_pop_action(ctx);
+ nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_SET_PRIORITY, priority);
+ add_output_action(ctx, odp_port);
+ add_pop_action(ctx);
+
+ /* Update NetFlow output port. */
+ if (ctx->nf_output_iface == NF_OUT_DROP) {
+ ctx->nf_output_iface = odp_port;
+ } else if (ctx->nf_output_iface != NF_OUT_FLOOD) {
+ ctx->nf_output_iface = NF_OUT_MULTI;
+ }
+}
+
+static void
+xlate_set_queue_action(struct action_xlate_ctx *ctx,
+ const struct nx_action_set_queue *nasq)
+{
+ uint32_t priority;
+ int error;
+
+ error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(nasq->queue_id),
+ &priority);
+ if (error) {
+ /* Couldn't translate queue to a priority, so ignore. A warning
+ * has already been logged. */
+ return;
+ }
+
+ remove_pop_action(ctx);
+ nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_SET_PRIORITY, priority);
+}
+
+static void
+xlate_set_dl_tci(struct action_xlate_ctx *ctx)
+{
+ ovs_be16 tci = ctx->flow.vlan_tci;
+ if (!(tci & htons(VLAN_CFI))) {
+ nl_msg_put_flag(ctx->odp_actions, ODP_ACTION_ATTR_STRIP_VLAN);
+ } else {
+ nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_TCI,
+ tci & ~htons(VLAN_CFI));
+ }
+}
+
+struct xlate_reg_state {
+ ovs_be16 vlan_tci;
+ ovs_be64 tun_id;
+};
+
+static void
+save_reg_state(const struct action_xlate_ctx *ctx,
+ struct xlate_reg_state *state)
+{
+ state->vlan_tci = ctx->flow.vlan_tci;
+ state->tun_id = ctx->flow.tun_id;
+}
+
+static void
+update_reg_state(struct action_xlate_ctx *ctx,
+ const struct xlate_reg_state *state)
+{
+ if (ctx->flow.vlan_tci != state->vlan_tci) {
+ xlate_set_dl_tci(ctx);
+ }
+ if (ctx->flow.tun_id != state->tun_id) {
+ nl_msg_put_be64(ctx->odp_actions,
+ ODP_ACTION_ATTR_SET_TUNNEL, ctx->flow.tun_id);
+ }
+}
+
+static void
+xlate_autopath(struct action_xlate_ctx *ctx,
+ const struct nx_action_autopath *naa)
+{
+ uint16_t ofp_port = ntohl(naa->id);
+ struct ofport_dpif *port = get_ofp_port(ctx->ofproto, ofp_port);
+
+ if (!port || !port->bundle) {
+ ofp_port = OFPP_NONE;
+ } else if (port->bundle->bond) {
+ /* Autopath does not support VLAN hashing. */
+ struct ofport_dpif *slave = bond_choose_output_slave(
+ port->bundle->bond, &ctx->flow, OFP_VLAN_NONE, &ctx->tags);
+ if (slave) {
+ ofp_port = slave->up.ofp_port;
+ }
+ }
+ autopath_execute(naa, &ctx->flow, ofp_port);
+}
+
+static void
+xlate_nicira_action(struct action_xlate_ctx *ctx,
+ const struct nx_action_header *nah)
+{
+ const struct nx_action_resubmit *nar;
+ const struct nx_action_set_tunnel *nast;
+ const struct nx_action_set_queue *nasq;
+ const struct nx_action_multipath *nam;
+ const struct nx_action_autopath *naa;
+ enum nx_action_subtype subtype = ntohs(nah->subtype);
+ struct xlate_reg_state state;
+ ovs_be64 tun_id;
+
+ assert(nah->vendor == htonl(NX_VENDOR_ID));
+ switch (subtype) {
+ case NXAST_RESUBMIT:
+ nar = (const struct nx_action_resubmit *) nah;
+ xlate_table_action(ctx, ntohs(nar->in_port));
+ break;
+
+ case NXAST_SET_TUNNEL:
+ nast = (const struct nx_action_set_tunnel *) nah;
+ tun_id = htonll(ntohl(nast->tun_id));
+ nl_msg_put_be64(ctx->odp_actions, ODP_ACTION_ATTR_SET_TUNNEL, tun_id);
+ ctx->flow.tun_id = tun_id;
+ break;
+
+ case NXAST_DROP_SPOOFED_ARP:
+ if (ctx->flow.dl_type == htons(ETH_TYPE_ARP)) {
+ nl_msg_put_flag(ctx->odp_actions,
+ ODP_ACTION_ATTR_DROP_SPOOFED_ARP);
+ }
+ break;
+
+ case NXAST_SET_QUEUE:
+ nasq = (const struct nx_action_set_queue *) nah;
+ xlate_set_queue_action(ctx, nasq);
+ break;
+
+ case NXAST_POP_QUEUE:
+ add_pop_action(ctx);
+ break;
+
+ case NXAST_REG_MOVE:
+ save_reg_state(ctx, &state);
+ nxm_execute_reg_move((const struct nx_action_reg_move *) nah,
+ &ctx->flow);
+ update_reg_state(ctx, &state);
+ break;
+
+ case NXAST_REG_LOAD:
+ save_reg_state(ctx, &state);
+ nxm_execute_reg_load((const struct nx_action_reg_load *) nah,
+ &ctx->flow);
+ update_reg_state(ctx, &state);
+ break;
+
+ case NXAST_NOTE:
+ /* Nothing to do. */
+ break;
+
+ case NXAST_SET_TUNNEL64:
+ tun_id = ((const struct nx_action_set_tunnel64 *) nah)->tun_id;
+ nl_msg_put_be64(ctx->odp_actions, ODP_ACTION_ATTR_SET_TUNNEL, tun_id);
+ ctx->flow.tun_id = tun_id;
+ break;
+
+ case NXAST_MULTIPATH:
+ nam = (const struct nx_action_multipath *) nah;
+ multipath_execute(nam, &ctx->flow);
+ break;
+
+ case NXAST_AUTOPATH:
+ naa = (const struct nx_action_autopath *) nah;
+ xlate_autopath(ctx, naa);
+ break;
+
+ /* If you add a new action here that modifies flow data, don't forget to
+ * update the flow key in ctx->flow at the same time. */
+
+ case NXAST_SNAT__OBSOLETE:
+ default:
+ VLOG_DBG_RL(&rl, "unknown Nicira action type %d", (int) subtype);
+ break;
+ }
+}
+
+static void
+do_xlate_actions(const union ofp_action *in, size_t n_in,
+ struct action_xlate_ctx *ctx)
+{
+ const struct ofport_dpif *port;
+ struct actions_iterator iter;
+ const union ofp_action *ia;
+
+ port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
+ if (port
+ && port->up.opp.config & htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP) &&
+ port->up.opp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp)
+ ? htonl(OFPPC_NO_RECV_STP)
+ : htonl(OFPPC_NO_RECV))) {
+ /* Drop this flow. */
+ return;
+ }
+
+ for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) {
+ enum ofp_action_type type = ntohs(ia->type);
+ const struct ofp_action_dl_addr *oada;
+
+ switch (type) {
+ case OFPAT_OUTPUT:
+ xlate_output_action(ctx, &ia->output);
+ break;
+
+ case OFPAT_SET_VLAN_VID:
+ ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK);
+ ctx->flow.vlan_tci |= ia->vlan_vid.vlan_vid | htons(VLAN_CFI);
+ xlate_set_dl_tci(ctx);
+ break;
+
+ case OFPAT_SET_VLAN_PCP:
+ ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK);
+ ctx->flow.vlan_tci |= htons(
+ (ia->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT) | VLAN_CFI);
+ xlate_set_dl_tci(ctx);
+ break;
+
+ case OFPAT_STRIP_VLAN:
+ ctx->flow.vlan_tci = htons(0);
+ xlate_set_dl_tci(ctx);
+ break;
+
+ case OFPAT_SET_DL_SRC:
+ oada = ((struct ofp_action_dl_addr *) ia);
+ nl_msg_put_unspec(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_SRC,
+ oada->dl_addr, ETH_ADDR_LEN);
+ memcpy(ctx->flow.dl_src, oada->dl_addr, ETH_ADDR_LEN);
+ break;
+
+ case OFPAT_SET_DL_DST:
+ oada = ((struct ofp_action_dl_addr *) ia);
+ nl_msg_put_unspec(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_DST,
+ oada->dl_addr, ETH_ADDR_LEN);
+ memcpy(ctx->flow.dl_dst, oada->dl_addr, ETH_ADDR_LEN);
+ break;
+
+ case OFPAT_SET_NW_SRC:
+ nl_msg_put_be32(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_SRC,
+ ia->nw_addr.nw_addr);
+ ctx->flow.nw_src = ia->nw_addr.nw_addr;
+ break;
+
+ case OFPAT_SET_NW_DST:
+ nl_msg_put_be32(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_DST,
+ ia->nw_addr.nw_addr);
+ ctx->flow.nw_dst = ia->nw_addr.nw_addr;
+ break;
+
+ case OFPAT_SET_NW_TOS:
+ nl_msg_put_u8(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_TOS,
+ ia->nw_tos.nw_tos);
+ ctx->flow.nw_tos = ia->nw_tos.nw_tos;
+ break;
+
+ case OFPAT_SET_TP_SRC:
+ nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_TP_SRC,
+ ia->tp_port.tp_port);
+ ctx->flow.tp_src = ia->tp_port.tp_port;
+ break;
+
+ case OFPAT_SET_TP_DST:
+ nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_TP_DST,
+ ia->tp_port.tp_port);
+ ctx->flow.tp_dst = ia->tp_port.tp_port;
+ break;
+
+ case OFPAT_VENDOR:
+ xlate_nicira_action(ctx, (const struct nx_action_header *) ia);
+ break;
+
+ case OFPAT_ENQUEUE:
+ xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia);
+ break;
+
+ default:
+ VLOG_DBG_RL(&rl, "unknown action type %d", (int) type);
+ break;
+ }
+ }
+}
+
+static void
+action_xlate_ctx_init(struct action_xlate_ctx *ctx,
+ struct ofproto_dpif *ofproto, const struct flow *flow,
+ const struct ofpbuf *packet)
+{
+ ctx->ofproto = ofproto;
+ ctx->flow = *flow;
+ ctx->packet = packet;
+ ctx->resubmit_hook = NULL;
+}
+
+static struct ofpbuf *
+xlate_actions(struct action_xlate_ctx *ctx,
+ const union ofp_action *in, size_t n_in)
+{
+ COVERAGE_INC(ofproto_dpif_xlate);
+
+ ctx->odp_actions = ofpbuf_new(512);
+ ctx->tags = 0;
+ ctx->may_set_up_flow = true;
+ ctx->nf_output_iface = NF_OUT_DROP;
+ ctx->recurse = 0;
+ ctx->last_pop_priority = -1;
+
+ if (process_special(ctx->ofproto, &ctx->flow, ctx->packet)) {
+ ctx->may_set_up_flow = false;
+ } else {
+ do_xlate_actions(in, n_in, ctx);
+ }
+
+ remove_pop_action(ctx);
+
+ /* Check with in-band control to see if we're allowed to set up this
+ * flow. */
+ if (!connmgr_may_set_up_flow(ctx->ofproto->up.connmgr, &ctx->flow,
+ ctx->odp_actions->data,
+ ctx->odp_actions->size)) {
+ ctx->may_set_up_flow = false;
+ }
+
+ return ctx->odp_actions;
+}
+\f
+/* OFPP_NORMAL implementation. */
+
+struct dst {
+ struct ofport_dpif *port;
+ uint16_t vlan;
+};
+
+struct dst_set {
+ struct dst builtin[32];
+ struct dst *dsts;
+ size_t n, allocated;
+};
+
+static void dst_set_init(struct dst_set *);
+static void dst_set_add(struct dst_set *, const struct dst *);
+static void dst_set_free(struct dst_set *);
+
+static struct ofport_dpif *ofbundle_get_a_port(const struct ofbundle *);
+
+static bool
+set_dst(struct action_xlate_ctx *ctx, struct dst *dst,
+ const struct ofbundle *in_bundle, const struct ofbundle *out_bundle)
+{
+ dst->vlan = (out_bundle->vlan >= 0 ? OFP_VLAN_NONE
+ : in_bundle->vlan >= 0 ? in_bundle->vlan
+ : ctx->flow.vlan_tci == 0 ? OFP_VLAN_NONE
+ : vlan_tci_to_vid(ctx->flow.vlan_tci));
+
+ dst->port = (!out_bundle->bond
+ ? ofbundle_get_a_port(out_bundle)
+ : bond_choose_output_slave(out_bundle->bond, &ctx->flow,
+ dst->vlan, &ctx->tags));
+
+ return dst->port != NULL;
+}
+
+static int
+mirror_mask_ffs(mirror_mask_t mask)
+{
+ BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask));
+ return ffs(mask);
+}
+
+static void
+dst_set_init(struct dst_set *set)
+{
+ set->dsts = set->builtin;
+ set->n = 0;
+ set->allocated = ARRAY_SIZE(set->builtin);
+}
+
+static void
+dst_set_add(struct dst_set *set, const struct dst *dst)
+{
+ if (set->n >= set->allocated) {
+ size_t new_allocated;
+ struct dst *new_dsts;
+
+ new_allocated = set->allocated * 2;
+ new_dsts = xmalloc(new_allocated * sizeof *new_dsts);
+ memcpy(new_dsts, set->dsts, set->n * sizeof *new_dsts);
+
+ dst_set_free(set);
+
+ set->dsts = new_dsts;
+ set->allocated = new_allocated;
+ }
+ set->dsts[set->n++] = *dst;
+}
+
+static void
+dst_set_free(struct dst_set *set)
+{
+ if (set->dsts != set->builtin) {
+ free(set->dsts);
+ }
+}
+
+static bool
+dst_is_duplicate(const struct dst_set *set, const struct dst *test)
+{
+ size_t i;
+ for (i = 0; i < set->n; i++) {
+ if (set->dsts[i].vlan == test->vlan
+ && set->dsts[i].port == test->port) {
+ return true;
+ }
+ }
+ return false;
+}
+
+static bool
+ofbundle_trunks_vlan(const struct ofbundle *bundle, uint16_t vlan)
+{
+ return bundle->vlan < 0 && vlan_bitmap_contains(bundle->trunks, vlan);
+}
+
+static bool
+ofbundle_includes_vlan(const struct ofbundle *bundle, uint16_t vlan)
+{
+ return vlan == bundle->vlan || ofbundle_trunks_vlan(bundle, vlan);
+}
+
+/* Returns an arbitrary interface within 'bundle'. */
+static struct ofport_dpif *
+ofbundle_get_a_port(const struct ofbundle *bundle)
+{
+ return CONTAINER_OF(list_front(&bundle->ports),
+ struct ofport_dpif, bundle_node);
+}
+
+static void
+compose_dsts(struct action_xlate_ctx *ctx, uint16_t vlan,
+ const struct ofbundle *in_bundle,
+ const struct ofbundle *out_bundle, struct dst_set *set)
+{
+ struct dst dst;
+
+ if (out_bundle == OFBUNDLE_FLOOD) {
+ struct ofbundle *bundle;
+
+ HMAP_FOR_EACH (bundle, hmap_node, &ctx->ofproto->bundles) {
+ if (bundle != in_bundle
+ && ofbundle_includes_vlan(bundle, vlan)
+ && bundle->floodable
+ && !bundle->mirror_out
+ && set_dst(ctx, &dst, in_bundle, bundle)) {
+ dst_set_add(set, &dst);
+ }
+ }
+ ctx->nf_output_iface = NF_OUT_FLOOD;
+ } else if (out_bundle && set_dst(ctx, &dst, in_bundle, out_bundle)) {
+ dst_set_add(set, &dst);
+ ctx->nf_output_iface = dst.port->odp_port;
+ }
+}
+
+static bool
+vlan_is_mirrored(const struct ofmirror *m, int vlan)
+{
+ return vlan_bitmap_contains(m->vlans, vlan);
+}
+
+static void
+compose_mirror_dsts(struct action_xlate_ctx *ctx,
+ uint16_t vlan, const struct ofbundle *in_bundle,
+ struct dst_set *set)
+{
+ struct ofproto_dpif *ofproto = ctx->ofproto;
+ mirror_mask_t mirrors;
+ int flow_vlan;
+ size_t i;
+
+ mirrors = in_bundle->src_mirrors;
+ for (i = 0; i < set->n; i++) {
+ mirrors |= set->dsts[i].port->bundle->dst_mirrors;
+ }
+
+ if (!mirrors) {
+ return;
+ }
+
+ flow_vlan = vlan_tci_to_vid(ctx->flow.vlan_tci);
+ if (flow_vlan == 0) {
+ flow_vlan = OFP_VLAN_NONE;
+ }
+
+ while (mirrors) {
+ struct ofmirror *m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
+ if (vlan_is_mirrored(m, vlan)) {
+ struct dst dst;
+
+ if (m->out) {
+ if (set_dst(ctx, &dst, in_bundle, m->out)
+ && !dst_is_duplicate(set, &dst)) {
+ dst_set_add(set, &dst);
+ }
+ } else {
+ struct ofbundle *bundle;
+
+ HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
+ if (ofbundle_includes_vlan(bundle, m->out_vlan)
+ && set_dst(ctx, &dst, in_bundle, bundle))
+ {
+ if (bundle->vlan < 0) {
+ dst.vlan = m->out_vlan;
+ }
+ if (dst_is_duplicate(set, &dst)) {
+ continue;
+ }
+
+ /* Use the vlan tag on the original flow instead of
+ * the one passed in the vlan parameter. This ensures
+ * that we compare the vlan from before any implicit
+ * tagging tags place. This is necessary because
+ * dst->vlan is the final vlan, after removing implicit
+ * tags. */
+ if (bundle == in_bundle && dst.vlan == flow_vlan) {
+ /* Don't send out input port on same VLAN. */
+ continue;
+ }
+ dst_set_add(set, &dst);
+ }
+ }
+ }
+ }
+ mirrors &= mirrors - 1;
+ }
+}
+
+static void
+compose_actions(struct action_xlate_ctx *ctx, uint16_t vlan,
+ const struct ofbundle *in_bundle,
+ const struct ofbundle *out_bundle)
+{
+ uint16_t initial_vlan, cur_vlan;
+ const struct dst *dst;
+ struct dst_set set;
+
+ dst_set_init(&set);
+ compose_dsts(ctx, vlan, in_bundle, out_bundle, &set);
+ compose_mirror_dsts(ctx, vlan, in_bundle, &set);
+
+ /* Output all the packets we can without having to change the VLAN. */
+ initial_vlan = vlan_tci_to_vid(ctx->flow.vlan_tci);
+ if (initial_vlan == 0) {
+ initial_vlan = OFP_VLAN_NONE;
+ }
+ for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) {
+ if (dst->vlan != initial_vlan) {
+ continue;
+ }
+ nl_msg_put_u32(ctx->odp_actions,
+ ODP_ACTION_ATTR_OUTPUT, dst->port->odp_port);
+ }
+
+ /* Then output the rest. */
+ cur_vlan = initial_vlan;
+ for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) {
+ if (dst->vlan == initial_vlan) {
+ continue;
+ }
+ if (dst->vlan != cur_vlan) {
+ if (dst->vlan == OFP_VLAN_NONE) {
+ nl_msg_put_flag(ctx->odp_actions, ODP_ACTION_ATTR_STRIP_VLAN);
+ } else {
+ ovs_be16 tci;
+ tci = htons(dst->vlan & VLAN_VID_MASK);
+ tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK);
+ nl_msg_put_be16(ctx->odp_actions,
+ ODP_ACTION_ATTR_SET_DL_TCI, tci);
+ }
+ cur_vlan = dst->vlan;
+ }
+ nl_msg_put_u32(ctx->odp_actions,
+ ODP_ACTION_ATTR_OUTPUT, dst->port->odp_port);
+ }
+
+ dst_set_free(&set);
+}
+
+/* Returns the effective vlan of a packet, taking into account both the
+ * 802.1Q header and implicitly tagged ports. A value of 0 indicates that
+ * the packet is untagged and -1 indicates it has an invalid header and
+ * should be dropped. */
+static int
+flow_get_vlan(struct ofproto_dpif *ofproto, const struct flow *flow,
+ struct ofbundle *in_bundle, bool have_packet)
+{
+ int vlan = vlan_tci_to_vid(flow->vlan_tci);
+ if (in_bundle->vlan >= 0) {
+ if (vlan) {
+ if (have_packet) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+ VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged "
+ "packet received on port %s configured with "
+ "implicit VLAN %"PRIu16,
+ ofproto->up.name, vlan,
+ in_bundle->name, in_bundle->vlan);
+ }
+ return -1;
+ }
+ vlan = in_bundle->vlan;
+ } else {
+ if (!ofbundle_includes_vlan(in_bundle, vlan)) {
+ if (have_packet) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+ VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged "
+ "packet received on port %s not configured for "
+ "trunking VLAN %d",
+ ofproto->up.name, vlan, in_bundle->name, vlan);
+ }
+ return -1;
+ }
+ }
+
+ return vlan;
+}
+
+/* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
+ * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
+ * indicate this; newer upstream kernels use gratuitous ARP requests. */
+static bool
+is_gratuitous_arp(const struct flow *flow)
+{
+ return (flow->dl_type == htons(ETH_TYPE_ARP)
+ && eth_addr_is_broadcast(flow->dl_dst)
+ && (flow->nw_proto == ARP_OP_REPLY
+ || (flow->nw_proto == ARP_OP_REQUEST
+ && flow->nw_src == flow->nw_dst)));
+}
+
+static void
+update_learning_table(struct ofproto_dpif *ofproto,
+ const struct flow *flow, int vlan,
+ struct ofbundle *in_bundle)
+{
+ struct mac_entry *mac;
+
+ if (!mac_learning_may_learn(ofproto->ml, flow->dl_src, vlan)) {
+ return;
+ }
+
+ mac = mac_learning_insert(ofproto->ml, flow->dl_src, vlan);
+ if (is_gratuitous_arp(flow)) {
+ /* We don't want to learn from gratuitous ARP packets that are
+ * reflected back over bond slaves so we lock the learning table. */
+ if (!in_bundle->bond) {
+ mac_entry_set_grat_arp_lock(mac);
+ } else if (mac_entry_is_grat_arp_locked(mac)) {
+ return;
+ }
+ }
+
+ if (mac_entry_is_new(mac) || mac->port.p != in_bundle) {
+ /* The log messages here could actually be useful in debugging,
+ * so keep the rate limit relatively high. */
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
+ VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is "
+ "on port %s in VLAN %d",
+ ofproto->up.name, ETH_ADDR_ARGS(flow->dl_src),
+ in_bundle->name, vlan);
+
+ mac->port.p = in_bundle;
+ tag_set_add(&ofproto->revalidate_set,
+ mac_learning_changed(ofproto->ml, mac));
+ }
+}
+
+/* Determines whether packets in 'flow' within 'br' should be forwarded or
+ * dropped. Returns true if they may be forwarded, false if they should be
+ * dropped.
+ *
+ * If 'have_packet' is true, it indicates that the caller is processing a
+ * received packet. If 'have_packet' is false, then the caller is just
+ * revalidating an existing flow because configuration has changed. Either
+ * way, 'have_packet' only affects logging (there is no point in logging errors
+ * during revalidation).
+ *
+ * Sets '*in_portp' to the input port. This will be a null pointer if
+ * flow->in_port does not designate a known input port (in which case
+ * is_admissible() returns false).
+ *
+ * When returning true, sets '*vlanp' to the effective VLAN of the input
+ * packet, as returned by flow_get_vlan().
+ *
+ * May also add tags to '*tags', although the current implementation only does
+ * so in one special case.
+ */
+static bool
+is_admissible(struct ofproto_dpif *ofproto, const struct flow *flow,
+ bool have_packet,
+ tag_type *tags, int *vlanp, struct ofbundle **in_bundlep)
+{
+ struct ofport_dpif *in_port;
+ struct ofbundle *in_bundle;
+ int vlan;
+
+ /* Find the port and bundle for the received packet. */
+ in_port = get_ofp_port(ofproto, flow->in_port);
+ *in_bundlep = in_bundle = in_port->bundle;
+ if (!in_port || !in_bundle) {
+ /* No interface? Something fishy... */
+ if (have_packet) {
+ /* Odd. A few possible reasons here:
+ *
+ * - We deleted a port but there are still a few packets queued up
+ * from it.
+ *
+ * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
+ * we don't know about.
+ *
+ * - Packet arrived on the local port but the local port is not
+ * part of a bundle.
+ */
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+
+ VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown "
+ "port %"PRIu16,
+ ofproto->up.name, flow->in_port);
+ }
+ return false;
+ }
+ *vlanp = vlan = flow_get_vlan(ofproto, flow, in_bundle, have_packet);
+ if (vlan < 0) {
+ return false;
+ }
+
+ /* Drop frames for reserved multicast addresses. */
+ if (eth_addr_is_reserved(flow->dl_dst)) {
+ return false;
+ }
+
+ /* Drop frames on bundles reserved for mirroring. */
+ if (in_bundle->mirror_out) {
+ if (have_packet) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+ VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
+ "%s, which is reserved exclusively for mirroring",
+ ofproto->up.name, in_bundle->name);
+ }
+ return false;
+ }
+
+ if (in_bundle->bond) {
+ struct mac_entry *mac;
+
+ switch (bond_check_admissibility(in_bundle->bond, in_port,
+ flow->dl_dst, tags)) {
+ case BV_ACCEPT:
+ break;
+
+ case BV_DROP:
+ return false;
+
+ case BV_DROP_IF_MOVED:
+ mac = mac_learning_lookup(ofproto->ml, flow->dl_src, vlan, NULL);
+ if (mac && mac->port.p != in_bundle &&
+ (!is_gratuitous_arp(flow)
+ || mac_entry_is_grat_arp_locked(mac))) {
+ return false;
+ }
+ break;
+ }
+ }
+
+ return true;
+}
+
+/* If the composed actions may be applied to any packet in the given 'flow',
+ * returns true. Otherwise, the actions should only be applied to 'packet', or
+ * not at all, if 'packet' was NULL. */
+static bool
+xlate_normal(struct action_xlate_ctx *ctx)
+{
+ struct ofbundle *in_bundle;
+ struct ofbundle *out_bundle;
+ struct mac_entry *mac;
+ int vlan;
+
+ /* Check whether we should drop packets in this flow. */
+ if (!is_admissible(ctx->ofproto, &ctx->flow, ctx->packet != NULL,
+ &ctx->tags, &vlan, &in_bundle)) {
+ out_bundle = NULL;
+ goto done;
+ }
+
+ /* Learn source MAC (but don't try to learn from revalidation). */
+ if (ctx->packet) {
+ update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle);
+ }
+
+ /* Determine output bundle. */
+ mac = mac_learning_lookup(ctx->ofproto->ml, ctx->flow.dl_dst, vlan,
+ &ctx->tags);
+ if (mac) {
+ out_bundle = mac->port.p;
+ } else if (!ctx->packet && !eth_addr_is_multicast(ctx->flow.dl_dst)) {
+ /* If we are revalidating but don't have a learning entry then eject
+ * the flow. Installing a flow that floods packets opens up a window
+ * of time where we could learn from a packet reflected on a bond and
+ * blackhole packets before the learning table is updated to reflect
+ * the correct port. */
+ return false;
+ } else {
+ out_bundle = OFBUNDLE_FLOOD;
+ }
+
+ /* Don't send packets out their input bundles. */
+ if (in_bundle == out_bundle) {
+ out_bundle = NULL;
+ }
+
+done:
+ if (in_bundle) {
+ compose_actions(ctx, vlan, in_bundle, out_bundle);
+ }
+
+ return true;
+}
+\f
+static bool
+get_drop_frags(struct ofproto *ofproto_)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ bool drop_frags;
+
+ dpif_get_drop_frags(ofproto->dpif, &drop_frags);
+ return drop_frags;
+}
+
+static void
+set_drop_frags(struct ofproto *ofproto_, bool drop_frags)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+
+ dpif_set_drop_frags(ofproto->dpif, drop_frags);
+}
+
+static int
+packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
+ const struct flow *flow,
+ const union ofp_action *ofp_actions, size_t n_ofp_actions)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ int error;
+
+ error = validate_actions(ofp_actions, n_ofp_actions, flow,
+ ofproto->max_ports);
+ if (!error) {
+ struct action_xlate_ctx ctx;
+ struct ofpbuf *odp_actions;
+
+ action_xlate_ctx_init(&ctx, ofproto, flow, packet);
+ odp_actions = xlate_actions(&ctx, ofp_actions, n_ofp_actions);
+ dpif_execute(ofproto->dpif, odp_actions->data, odp_actions->size,
+ packet);
+ ofpbuf_delete(odp_actions);
+ }
+ return error;
+}
+
+static void
+get_netflow_ids(const struct ofproto *ofproto_,
+ uint8_t *engine_type, uint8_t *engine_id)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+
+ dpif_get_netflow_ids(ofproto->dpif, engine_type, engine_id);
+}
+\f
+static struct ofproto_dpif *
+ofproto_dpif_lookup(const char *name)
+{
+ struct ofproto *ofproto = ofproto_lookup(name);
+ return (ofproto && ofproto->ofproto_class == &ofproto_dpif_class
+ ? ofproto_dpif_cast(ofproto)
+ : NULL);
+}
+
+static void
+ofproto_unixctl_fdb_show(struct unixctl_conn *conn,
+ const char *args, void *aux OVS_UNUSED)
+{
+ struct ds ds = DS_EMPTY_INITIALIZER;
+ const struct ofproto_dpif *ofproto;
+ const struct mac_entry *e;
+
+ ofproto = ofproto_dpif_lookup(args);
+ if (!ofproto) {
+ unixctl_command_reply(conn, 501, "no such bridge");
+ return;
+ }
+
+ ds_put_cstr(&ds, " port VLAN MAC Age\n");
+ LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
+ struct ofbundle *bundle = e->port.p;
+ ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n",
+ ofbundle_get_a_port(bundle)->odp_port,
+ e->vlan, ETH_ADDR_ARGS(e->mac), mac_entry_age(e));
+ }
+ unixctl_command_reply(conn, 200, ds_cstr(&ds));
+ ds_destroy(&ds);
+}
+
+struct ofproto_trace {
+ struct action_xlate_ctx ctx;
+ struct flow flow;
+ struct ds *result;
+};
+
+static void
+trace_format_rule(struct ds *result, int level, const struct rule *rule)
+{
+ ds_put_char_multiple(result, '\t', level);
+ if (!rule) {
+ ds_put_cstr(result, "No match\n");
+ return;
+ }
+
+ ds_put_format(result, "Rule: cookie=%#"PRIx64" ",
+ ntohll(rule->flow_cookie));
+ cls_rule_format(&rule->cr, result);
+ ds_put_char(result, '\n');
+
+ ds_put_char_multiple(result, '\t', level);
+ ds_put_cstr(result, "OpenFlow ");
+ ofp_print_actions(result, (const struct ofp_action_header *) rule->actions,
+ rule->n_actions * sizeof *rule->actions);
+ ds_put_char(result, '\n');
+}
+
+static void
+trace_format_flow(struct ds *result, int level, const char *title,
+ struct ofproto_trace *trace)
+{
+ ds_put_char_multiple(result, '\t', level);
+ ds_put_format(result, "%s: ", title);
+ if (flow_equal(&trace->ctx.flow, &trace->flow)) {
+ ds_put_cstr(result, "unchanged");
+ } else {
+ flow_format(result, &trace->ctx.flow);
+ trace->flow = trace->ctx.flow;
+ }
+ ds_put_char(result, '\n');
+}
+
+static void
+trace_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
+{
+ struct ofproto_trace *trace = CONTAINER_OF(ctx, struct ofproto_trace, ctx);
+ struct ds *result = trace->result;
+
+ ds_put_char(result, '\n');
+ trace_format_flow(result, ctx->recurse + 1, "Resubmitted flow", trace);
+ trace_format_rule(result, ctx->recurse + 1, &rule->up);
+}
+
+static void
+ofproto_unixctl_trace(struct unixctl_conn *conn, const char *args_,
+ void *aux OVS_UNUSED)
+{
+ char *dpname, *in_port_s, *tun_id_s, *packet_s;
+ char *args = xstrdup(args_);
+ char *save_ptr = NULL;
+ struct ofproto_dpif *ofproto;
+ struct ofpbuf packet;
+ struct rule_dpif *rule;
+ struct ds result;
+ struct flow flow;
+ uint16_t in_port;
+ ovs_be64 tun_id;
+ char *s;
+
+ ofpbuf_init(&packet, strlen(args) / 2);
+ ds_init(&result);
+
+ dpname = strtok_r(args, " ", &save_ptr);
+ tun_id_s = strtok_r(NULL, " ", &save_ptr);
+ in_port_s = strtok_r(NULL, " ", &save_ptr);
+ packet_s = strtok_r(NULL, "", &save_ptr); /* Get entire rest of line. */
+ if (!dpname || !in_port_s || !packet_s) {
+ unixctl_command_reply(conn, 501, "Bad command syntax");
+ goto exit;
+ }
+
+ ofproto = ofproto_dpif_lookup(dpname);
+ if (!ofproto) {
+ unixctl_command_reply(conn, 501, "Unknown ofproto (use ofproto/list "
+ "for help)");
+ goto exit;
+ }
+
+ tun_id = htonll(strtoull(tun_id_s, NULL, 0));
+ in_port = ofp_port_to_odp_port(atoi(in_port_s));
+
+ packet_s = ofpbuf_put_hex(&packet, packet_s, NULL);
+ packet_s += strspn(packet_s, " ");
+ if (*packet_s != '\0') {
+ unixctl_command_reply(conn, 501, "Trailing garbage in command");
+ goto exit;
+ }
+ if (packet.size < ETH_HEADER_LEN) {
+ unixctl_command_reply(conn, 501, "Packet data too short for Ethernet");
+ goto exit;
+ }
+
+ ds_put_cstr(&result, "Packet: ");
+ s = ofp_packet_to_string(packet.data, packet.size, packet.size);
+ ds_put_cstr(&result, s);
+ free(s);
+
+ flow_extract(&packet, tun_id, in_port, &flow);
+ ds_put_cstr(&result, "Flow: ");
+ flow_format(&result, &flow);
+ ds_put_char(&result, '\n');
+
+ rule = rule_dpif_lookup(ofproto, &flow);
+ trace_format_rule(&result, 0, &rule->up);
+ if (rule) {
+ struct ofproto_trace trace;
+ struct ofpbuf *odp_actions;
+
+ trace.result = &result;
+ trace.flow = flow;
+ action_xlate_ctx_init(&trace.ctx, ofproto, &flow, &packet);
+ trace.ctx.resubmit_hook = trace_resubmit;
+ odp_actions = xlate_actions(&trace.ctx,
+ rule->up.actions, rule->up.n_actions);
+
+ ds_put_char(&result, '\n');
+ trace_format_flow(&result, 0, "Final flow", &trace);
+ ds_put_cstr(&result, "Datapath actions: ");
+ format_odp_actions(&result, odp_actions->data, odp_actions->size);
+ ofpbuf_delete(odp_actions);
+ }
+
+ unixctl_command_reply(conn, 200, ds_cstr(&result));
+
+exit:
+ ds_destroy(&result);
+ ofpbuf_uninit(&packet);
+ free(args);
+}
+
+static void
+ofproto_dpif_unixctl_init(void)
+{
+ static bool registered;
+ if (registered) {
+ return;
+ }
+ registered = true;
+
+ unixctl_command_register("ofproto/trace", ofproto_unixctl_trace, NULL);
+ unixctl_command_register("fdb/show", ofproto_unixctl_fdb_show, NULL);
+}
+\f
+const struct ofproto_class ofproto_dpif_class = {
+ enumerate_types,
+ enumerate_names,
+ del,
+ alloc,
+ construct,
+ destruct,
+ dealloc,
+ run,
+ wait,
+ flush,
+ get_features,
+ get_tables,
+ port_alloc,
+ port_construct,
+ port_destruct,
+ port_dealloc,
+ port_modified,
+ port_reconfigured,
+ port_query_by_name,
+ port_add,
+ port_del,
+ port_dump_start,
+ port_dump_next,
+ port_dump_done,
+ port_poll,
+ port_poll_wait,
+ port_is_lacp_current,
+ rule_alloc,
+ rule_construct,
+ rule_destruct,
+ rule_dealloc,
+ rule_get_stats,
+ rule_execute,
+ rule_modify_actions,
+ get_drop_frags,
+ set_drop_frags,
+ packet_out,
+ set_netflow,
+ get_netflow_ids,
+ set_sflow,
+ set_cfm,
+ get_cfm,
+ bundle_set,
+ bundle_remove,
+ mirror_set,
+ set_flood_vlans,
+ is_mirror_output_bundle,
+};
--- /dev/null
- * - 'wildcards' to OVSFW_ALL.
+/*
+ * Copyright (c) 2009, 2010, 2011 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef OFPROTO_PRIVATE_H
+#define OFPROTO_PRIVATE_H 1
+
+/* Definitions for use within ofproto. */
+
+#include "ofproto/ofproto.h"
+#include "classifier.h"
+#include "list.h"
+#include "shash.h"
+#include "timeval.h"
+
+/* An OpenFlow switch.
+ *
+ * With few exceptions, ofproto implementations may look at these fields but
+ * should not modify them. */
+struct ofproto {
+ const struct ofproto_class *ofproto_class;
+ char *type; /* Datapath type. */
+ char *name; /* Datapath name. */
+ struct hmap_node hmap_node; /* In global 'all_ofprotos' hmap. */
+
+ /* Settings. */
+ uint64_t fallback_dpid; /* Datapath ID if no better choice found. */
+ uint64_t datapath_id; /* Datapath ID. */
+ char *mfr_desc; /* Manufacturer. */
+ char *hw_desc; /* Hardware. */
+ char *sw_desc; /* Software version. */
+ char *serial_desc; /* Serial number. */
+ char *dp_desc; /* Datapath description. */
+
+ /* Datapath. */
+ struct netdev_monitor *netdev_monitor;
+ struct hmap ports; /* Contains "struct ofport"s. */
+ struct shash port_by_name;
+
+ /* Flow tables. */
+ struct classifier *tables; /* Each classifier contains "struct rule"s. */
+ int n_tables;
+
+ /* OpenFlow connections. */
+ struct connmgr *connmgr;
+};
+
+struct ofproto *ofproto_lookup(const char *name);
+struct ofport *ofproto_get_port(const struct ofproto *, uint16_t ofp_port);
+
+/* An OpenFlow port within a "struct ofproto".
+ *
+ * With few exceptions, ofproto implementations may look at these fields but
+ * should not modify them. */
+struct ofport {
+ struct ofproto *ofproto; /* The ofproto that contains this port. */
+ struct hmap_node hmap_node; /* In struct ofproto's "ports" hmap. */
+ struct netdev *netdev;
+ struct ofp_phy_port opp;
+ uint16_t ofp_port; /* OpenFlow port number. */
+};
+
+/* An OpenFlow flow within a "struct ofproto".
+ *
+ * With few exceptions, ofproto implementations may look at these fields but
+ * should not modify them. */
+struct rule {
+ struct ofproto *ofproto; /* The ofproto that contains this rule. */
+ struct cls_rule cr; /* In owning ofproto's classifier. */
+
+ ovs_be64 flow_cookie; /* Controller-issued identifier. */
+
+ long long int created; /* Creation time. */
+ uint16_t idle_timeout; /* In seconds from time of last use. */
+ uint16_t hard_timeout; /* In seconds from time of creation. */
+ uint8_t table_id; /* Index in ofproto's 'tables' array. */
+ bool send_flow_removed; /* Send a flow removed message? */
+
+ union ofp_action *actions; /* OpenFlow actions. */
+ int n_actions; /* Number of elements in actions[]. */
+};
+
+static inline struct rule *
+rule_from_cls_rule(const struct cls_rule *cls_rule)
+{
+ return cls_rule ? CONTAINER_OF(cls_rule, struct rule, cr) : NULL;
+}
+
+void ofproto_rule_expire(struct rule *, uint8_t reason);
+void ofproto_rule_destroy(struct rule *);
+
+/* ofproto class structure, to be defined by each ofproto implementation.
+ *
+ *
+ * Data Structures
+ * ===============
+ *
+ * These functions work primarily with three different kinds of data
+ * structures:
+ *
+ * - "struct ofproto", which represents an OpenFlow switch.
+ *
+ * - "struct ofport", which represents a port within an ofproto.
+ *
+ * - "struct rule", which represents an OpenFlow flow within an ofproto.
+ *
+ * Each of these data structures contains all of the implementation-independent
+ * generic state for the respective concept, called the "base" state. None of
+ * them contains any extra space for ofproto implementations to use. Instead,
+ * each implementation is expected to declare its own data structure that
+ * contains an instance of the generic data structure plus additional
+ * implementation-specific members, called the "derived" state. The
+ * implementation can use casts or (preferably) the CONTAINER_OF macro to
+ * obtain access to derived state given only a pointer to the embedded generic
+ * data structure.
+ *
+ *
+ * Life Cycle
+ * ==========
+ *
+ * Four stylized functions accompany each of these data structures:
+ *
+ * "alloc" "construct" "destruct" "dealloc"
+ * ------------ ---------------- --------------- --------------
+ * ofproto ->alloc ->construct ->destruct ->dealloc
+ * ofport ->port_alloc ->port_construct ->port_destruct ->port_dealloc
+ * rule ->rule_alloc ->rule_construct ->rule_destruct ->rule_dealloc
+ *
+ * Any instance of a given data structure goes through the following life
+ * cycle:
+ *
+ * 1. The client calls the "alloc" function to obtain raw memory. If "alloc"
+ * fails, skip all the other steps.
+ *
+ * 2. The client initializes all of the data structure's base state. If this
+ * fails, skip to step 7.
+ *
+ * 3. The client calls the "construct" function. The implementation
+ * initializes derived state. It may refer to the already-initialized
+ * base state. If "construct" fails, skip to step 6.
+ *
+ * 4. The data structure is now initialized and in use.
+ *
+ * 5. When the data structure is no longer needed, the client calls the
+ * "destruct" function. The implementation uninitializes derived state.
+ * The base state has not been uninitialized yet, so the implementation
+ * may still refer to it.
+ *
+ * 6. The client uninitializes all of the data structure's base state.
+ *
+ * 7. The client calls the "dealloc" to free the raw memory. The
+ * implementation must not refer to base or derived state in the data
+ * structure, because it has already been uninitialized.
+ *
+ * Each "alloc" function allocates and returns a new instance of the respective
+ * data structure. The "alloc" function is not given any information about the
+ * use of the new data structure, so it cannot perform much initialization.
+ * Its purpose is just to ensure that the new data structure has enough room
+ * for base and derived state. It may return a null pointer if memory is not
+ * available, in which case none of the other functions is called.
+ *
+ * Each "construct" function initializes derived state in its respective data
+ * structure. When "construct" is called, all of the base state has already
+ * been initialized, so the "construct" function may refer to it. The
+ * "construct" function is allowed to fail, in which case the client calls the
+ * "dealloc" function (but not the "destruct" function).
+ *
+ * Each "destruct" function uninitializes and frees derived state in its
+ * respective data structure. When "destruct" is called, the base state has
+ * not yet been uninitialized, so the "destruct" function may refer to it. The
+ * "destruct" function is not allowed to fail.
+ *
+ * Each "dealloc" function frees raw memory that was allocated by the the
+ * "alloc" function. The memory's base and derived members might not have ever
+ * been initialized (but if "construct" returned successfully, then it has been
+ * "destruct"ed already). The "dealloc" function is not allowed to fail.
+ *
+ *
+ * Conventions
+ * ===========
+ *
+ * Most of these functions return 0 if they are successful or a positive error
+ * code on failure. Depending on the function, valid error codes are either
+ * errno values or OpenFlow error codes constructed with ofp_mkerr().
+ *
+ * Most of these functions are expected to execute synchronously, that is, to
+ * block as necessary to obtain a result. Thus, these functions may return
+ * EAGAIN (or EWOULDBLOCK or EINPROGRESS) only where the function descriptions
+ * explicitly say those errors are a possibility. We may relax this
+ * requirement in the future if and when we encounter performance problems. */
+struct ofproto_class {
+/* ## ----------------- ## */
+/* ## Factory Functions ## */
+/* ## ----------------- ## */
+
+ /* Enumerates the types of all support ofproto types into 'types'. The
+ * caller has already initialized 'types' and other ofproto classes might
+ * already have added names to it. */
+ void (*enumerate_types)(struct sset *types);
+
+ /* Enumerates the names of all existing datapath of the specified 'type'
+ * into 'names' 'all_dps'. The caller has already initialized 'names' as
+ * an empty sset.
+ *
+ * 'type' is one of the types enumerated by ->enumerate_types().
+ *
+ * Returns 0 if successful, otherwise a positive errno value.
+ */
+ int (*enumerate_names)(const char *type, struct sset *names);
+
+ /* Deletes the datapath with the specified 'type' and 'name'. The caller
+ * should have closed any open ofproto with this 'type' and 'name'; this
+ * function is allowed to fail if that is not the case.
+ *
+ * 'type' is one of the types enumerated by ->enumerate_types().
+ * 'name' is one of the names enumerated by ->enumerate_names() for 'type'.
+ *
+ * Returns 0 if successful, otherwise a positive errno value.
+ */
+ int (*del)(const char *type, const char *name);
+
+/* ## --------------------------- ## */
+/* ## Top-Level ofproto Functions ## */
+/* ## --------------------------- ## */
+
+ /* Life-cycle functions for an "ofproto" (see "Life Cycle" above).
+ *
+ * ->construct() should not modify most base members of the ofproto. In
+ * particular, the client will initialize the ofproto's 'ports' member
+ * after construction is complete.
+ *
+ * ->construct() should initialize the base 'n_tables' member to the number
+ * of flow tables supported by the datapath (between 1 and 254, inclusive),
+ * initialize the base 'tables' member with space for one classifier per
+ * table, and initialize each classifier with classifier_init. Each flow
+ * table should be initially empty, so ->construct() should delete flows
+ * from the underlying datapath, if necessary, rather than populating the
+ * tables.
+ *
+ * Only one ofproto instance needs to be supported for any given datapath.
+ * If a datapath is already open as part of one "ofproto", then another
+ * attempt to "construct" the same datapath as part of another ofproto is
+ * allowed to fail with an error.
+ *
+ * ->construct() returns 0 if successful, otherwise a positive errno
+ * value. */
+ struct ofproto *(*alloc)(void);
+ int (*construct)(struct ofproto *ofproto);
+ void (*destruct)(struct ofproto *ofproto);
+ void (*dealloc)(struct ofproto *ofproto);
+
+ /* Performs any periodic activity required by 'ofproto'. It should:
+ *
+ * - Call connmgr_send_packet_in() for each received packet that missed
+ * in the OpenFlow flow table or that had a OFPP_CONTROLLER output
+ * action.
+ *
+ * - Call ofproto_rule_expire() for each OpenFlow flow that has reached
+ * its hard_timeout or idle_timeout, to expire the flow.
+ *
+ * Returns 0 if successful, otherwise a positive errno value. The ENODEV
+ * return value specifically means that the datapath underlying 'ofproto'
+ * has been destroyed (externally, e.g. by an admin running ovs-dpctl).
+ */
+ int (*run)(struct ofproto *ofproto);
+
+ /* Causes the poll loop to wake up when 'ofproto''s 'run' function needs to
+ * be called, e.g. by calling the timer or fd waiting functions in
+ * poll-loop.h. */
+ void (*wait)(struct ofproto *ofproto);
+
+ /* Every "struct rule" in 'ofproto' is about to be deleted, one by one.
+ * This function may prepare for that, for example by clearing state in
+ * advance. It should *not* actually delete any "struct rule"s from
+ * 'ofproto', only prepare for it.
+ *
+ * This function is optional; it's really just for optimization in case
+ * it's cheaper to delete all the flows from your hardware in a single pass
+ * than to do it one by one. */
+ void (*flush)(struct ofproto *ofproto);
+
+ /* Helper for the OpenFlow OFPT_FEATURES_REQUEST request.
+ *
+ * The implementation should store true in '*arp_match_ip' if the switch
+ * supports matching IP addresses inside ARP requests and replies, false
+ * otherwise.
+ *
+ * The implementation should store in '*actions' a bitmap of the supported
+ * OpenFlow actions: the bit with value (1 << n) should be set to 1 if the
+ * implementation supports the action with value 'n', and to 0 otherwise.
+ * For example, if the implementation supports the OFPAT_OUTPUT and
+ * OFPAT_ENQUEUE actions, but no others, it would set '*actions' to (1 <<
+ * OFPAT_OUTPUT) | (1 << OFPAT_ENQUEUE). Vendor actions are not included
+ * in '*actions'. */
+ void (*get_features)(struct ofproto *ofproto,
+ bool *arp_match_ip, uint32_t *actions);
+
+ /* Helper for the OpenFlow OFPST_TABLE statistics request.
+ *
+ * The 'ots' array contains 'ofproto->n_tables' elements. Each element is
+ * initialized as:
+ *
+ * - 'table_id' to the array index.
+ *
+ * - 'name' to "table#" where # is the table ID.
+ *
++ * - 'wildcards' to OFPFW_ALL.
+ *
+ * - 'max_entries' to 1,000,000.
+ *
+ * - 'active_count' to the classifier_count() for the table.
+ *
+ * - 'lookup_count' and 'matched_count' to 0.
+ *
+ * The implementation should update any members in each element for which
+ * it has better values:
+ *
+ * - 'name' to a more meaningful name.
+ *
+ * - 'wildcards' to the set of wildcards actually supported by the table
+ * (if it doesn't support all OpenFlow wildcards).
+ *
+ * - 'max_entries' to the maximum number of flows actually supported by
+ * the hardware.
+ *
+ * - 'lookup_count' to the number of packets looked up in this flow table
+ * so far.
+ *
+ * - 'matched_count' to the number of packets looked up in this flow
+ * table so far that matched one of the flow entries.
+ *
+ * Keep in mind that all of the members of struct ofp_table_stats are in
+ * network byte order.
+ */
+ void (*get_tables)(struct ofproto *ofproto, struct ofp_table_stats *ots);
+
+/* ## ---------------- ## */
+/* ## ofport Functions ## */
+/* ## ---------------- ## */
+
+ /* Life-cycle functions for a "struct ofport" (see "Life Cycle" above).
+ *
+ * ->port_construct() should not modify any base members of the ofport.
+ *
+ * ofports are managed by the base ofproto code. The ofproto
+ * implementation should only create and destroy them in response to calls
+ * to these functions. The base ofproto code will create and destroy
+ * ofports in the following situations:
+ *
+ * - Just after the ->construct() function is called, the base ofproto
+ * iterates over all of the implementation's ports, using
+ * ->port_dump_start() and related functions, and constructs an ofport
+ * for each dumped port.
+ *
+ * - If ->port_poll() reports that a specific port has changed, then the
+ * base ofproto will query that port with ->port_query_by_name() and
+ * construct or destruct ofports as necessary to reflect the updated
+ * set of ports.
+ *
+ * - If ->port_poll() returns ENOBUFS to report an unspecified port set
+ * change, then the base ofproto will iterate over all of the
+ * implementation's ports, in the same way as at ofproto
+ * initialization, and construct and destruct ofports to reflect all of
+ * the changes.
+ *
+ * ->port_construct() returns 0 if successful, otherwise a positive errno
+ * value.
+ */
+ struct ofport *(*port_alloc)(void);
+ int (*port_construct)(struct ofport *ofport);
+ void (*port_destruct)(struct ofport *ofport);
+ void (*port_dealloc)(struct ofport *ofport);
+
+ /* Called after 'ofport->netdev' is replaced by a new netdev object. If
+ * the ofproto implementation uses the ofport's netdev internally, then it
+ * should switch to using the new one. The old one has been closed.
+ *
+ * An ofproto implementation that doesn't need to do anything in this
+ * function may use a null pointer. */
+ void (*port_modified)(struct ofport *ofport);
+
+ /* Called after an OpenFlow OFPT_PORT_MOD request changes a port's
+ * configuration. 'ofport->opp.config' contains the new configuration.
+ * 'old_config' contains the previous configuration.
+ *
+ * The caller implements OFPPC_PORT_DOWN using netdev functions to turn
+ * NETDEV_UP on and off, so this function doesn't have to do anything for
+ * that bit (and it won't be called if that is the only bit that
+ * changes). */
+ void (*port_reconfigured)(struct ofport *ofport, ovs_be32 old_config);
+
+ /* Looks up a port named 'devname' in 'ofproto'. On success, initializes
+ * '*port' appropriately.
+ *
+ * The caller owns the data in 'port' and must free it with
+ * ofproto_port_destroy() when it is no longer needed. */
+ int (*port_query_by_name)(const struct ofproto *ofproto,
+ const char *devname, struct ofproto_port *port);
+
+ /* Attempts to add 'netdev' as a port on 'ofproto'. Returns 0 if
+ * successful, otherwise a positive errno value. If successful, sets
+ * '*ofp_portp' to the new port's port number.
+ *
+ * It doesn't matter whether the new port will be returned by a later call
+ * to ->port_poll(); the implementation may do whatever is more
+ * convenient. */
+ int (*port_add)(struct ofproto *ofproto, struct netdev *netdev,
+ uint16_t *ofp_portp);
+
+ /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. Returns
+ * 0 if successful, otherwise a positive errno value.
+ *
+ * It doesn't matter whether the new port will be returned by a later call
+ * to ->port_poll(); the implementation may do whatever is more
+ * convenient. */
+ int (*port_del)(struct ofproto *ofproto, uint16_t ofp_port);
+
+ /* Attempts to begin dumping the ports in 'ofproto'. On success, returns 0
+ * and initializes '*statep' with any data needed for iteration. On
+ * failure, returns a positive errno value. */
+ int (*port_dump_start)(const struct ofproto *ofproto, void **statep);
+
+ /* Attempts to retrieve another port from 'ofproto' for 'state', which was
+ * initialized by a successful call to the 'port_dump_start' function for
+ * 'ofproto'. On success, stores a new ofproto_port into 'port' and
+ * returns 0. Returns EOF if the end of the port table has been reached,
+ * or a positive errno value on error. This function will not be called
+ * again once it returns nonzero once for a given iteration (but the
+ * 'port_dump_done' function will be called afterward).
+ *
+ * The ofproto provider retains ownership of the data stored in 'port'. It
+ * must remain valid until at least the next call to 'port_dump_next' or
+ * 'port_dump_done' for 'state'. */
+ int (*port_dump_next)(const struct ofproto *ofproto, void *state,
+ struct ofproto_port *port);
+
+ /* Releases resources from 'ofproto' for 'state', which was initialized by
+ * a successful call to the 'port_dump_start' function for 'ofproto'. */
+ int (*port_dump_done)(const struct ofproto *ofproto, void *state);
+
+ /* Polls for changes in the set of ports in 'ofproto'. If the set of ports
+ * in 'ofproto' has changed, then this function should do one of the
+ * following:
+ *
+ * - Preferably: store the name of the device that was added to or deleted
+ * from 'ofproto' in '*devnamep' and return 0. The caller is responsible
+ * for freeing '*devnamep' (with free()) when it no longer needs it.
+ *
+ * - Alternatively: return ENOBUFS, without indicating the device that was
+ * added or deleted.
+ *
+ * Occasional 'false positives', in which the function returns 0 while
+ * indicating a device that was not actually added or deleted or returns
+ * ENOBUFS without any change, are acceptable.
+ *
+ * The purpose of 'port_poll' is to let 'ofproto' know about changes made
+ * externally to the 'ofproto' object, e.g. by a system administrator via
+ * ovs-dpctl. Therefore, it's OK, and even preferable, for port_poll() to
+ * not report changes made through calls to 'port_add' or 'port_del' on the
+ * same 'ofproto' object. (But it's OK for it to report them too, just
+ * slightly less efficient.)
+ *
+ * If the set of ports in 'ofproto' has not changed, returns EAGAIN. May
+ * also return other positive errno values to indicate that something has
+ * gone wrong.
+ *
+ * If the set of ports in a datapath is fixed, or if the only way that the
+ * set of ports in a datapath can change is through ->port_add() and
+ * ->port_del(), then this function may be a null pointer.
+ */
+ int (*port_poll)(const struct ofproto *ofproto, char **devnamep);
+
+ /* Arranges for the poll loop to wake up when ->port_poll() will return a
+ * value other than EAGAIN.
+ *
+ * If the set of ports in a datapath is fixed, or if the only way that the
+ * set of ports in a datapath can change is through ->port_add() and
+ * ->port_del(), or if the poll loop will always wake up anyway when
+ * ->port_poll() will return a value other than EAGAIN, then this function
+ * may be a null pointer.
+ */
+ void (*port_poll_wait)(const struct ofproto *ofproto);
+
+ /* Checks the status of LACP negotiation for 'port'. Returns 1 if LACP
+ * partner information for 'port' is up-to-date, 0 if LACP partner
+ * information is not current (generally indicating a connectivity
+ * problem), or -1 if LACP is not enabled on 'port'.
+ *
+ * This function may be a null pointer if the ofproto implementation does
+ * not support LACP. */
+ int (*port_is_lacp_current)(const struct ofport *port);
+
+/* ## ----------------------- ## */
+/* ## OpenFlow Rule Functions ## */
+/* ## ----------------------- ## */
+
+ /* Life-cycle functions for a "struct rule" (see "Life Cycle" above).
+ *
+ * ->rule_construct() should first check whether the rule is acceptable:
+ *
+ * - Validate that the matching rule in 'rule->cr' is supported by the
+ * datapath. If not, then return an OpenFlow error code (as returned
+ * by ofp_mkerr()).
+ *
+ * For example, if the datapath does not support registers, then it
+ * should return an error if 'rule->cr' does not wildcard all
+ * registers.
+ *
+ * - Validate that 'rule->actions' and 'rule->n_actions' are well-formed
+ * OpenFlow actions that can be correctly implemented by the datapath.
+ * If not, then return an OpenFlow error code (as returned by
+ * ofp_mkerr()).
+ *
+ * The validate_actions() function (in ofp-util.c) can be useful as a
+ * model for action validation, but it accepts all of the OpenFlow
+ * actions that OVS understands. If your ofproto implementation only
+ * implements a subset of those, then you should implement your own
+ * action validation.
+ *
+ * If the rule is acceptable, then ->rule_construct() should modify the
+ * flow table:
+ *
+ * - If there was already a rule with exactly the same matching criteria
+ * and priority in the classifier, then it should destroy it (with
+ * ofproto_rule_destroy()).
+ *
+ * To the greatest extent possible, the old rule should be destroyed
+ * only if inserting the new rule succeeds; that is, ->rule_construct()
+ * should be transactional.
+ *
+ * The function classifier_find_rule_exactly() can locate such a rule.
+ *
+ * - Insert the new rule into the ofproto's 'cls' classifier, and into
+ * the datapath flow table.
+ *
+ * The function classifier_insert() inserts a rule into the classifier.
+ *
+ * Other than inserting 'rule->cr' into the classifier, ->rule_construct()
+ * should not modify any base members of struct rule.
+ *
+ * ->rule_destruct() should remove 'rule' from the ofproto's 'cls'
+ * classifier (e.g. with classifier_remove()) and from the datapath flow
+ * table. */
+ struct rule *(*rule_alloc)(void);
+ int (*rule_construct)(struct rule *rule);
+ void (*rule_destruct)(struct rule *rule);
+ void (*rule_dealloc)(struct rule *rule);
+
+ /* Obtains statistics for 'rule', storing the number of packets that have
+ * matched it in '*packet_count' and the number of bytes in those packets
+ * in '*byte_count'. */
+ void (*rule_get_stats)(struct rule *rule, uint64_t *packet_count,
+ uint64_t *byte_count);
+
+ /* Applies the actions in 'rule' to 'packet'. (This implements sending
+ * buffered packets for OpenFlow OFPT_FLOW_MOD commands.)
+ *
+ * Takes ownership of 'packet' (so it should eventually free it, with
+ * ofpbuf_delete()).
+ *
+ * 'flow' reflects the flow information for 'packet'. All of the
+ * information in 'flow' is extracted from 'packet', except for
+ * flow->tun_id and flow->in_port, which are assigned the correct values
+ * for the incoming packet. The register values are zeroed.
+ *
+ * The statistics for 'packet' should be included in 'rule'.
+ *
+ * Returns 0 if successful, otherwise an OpenFlow error code (as returned
+ * by ofp_mkerr()). */
+ int (*rule_execute)(struct rule *rule, struct flow *flow,
+ struct ofpbuf *packet);
+
+ /* Validates that the 'n' elements in 'actions' are well-formed OpenFlow
+ * actions that can be correctly implemented by the datapath. If not, then
+ * return an OpenFlow error code (as returned by ofp_mkerr()). If so,
+ * then update the datapath to implement the new actions and return 0.
+ *
+ * When this function runs, 'rule' still has its original actions. If this
+ * function returns 0, then the caller will update 'rule' with the new
+ * actions and free the old ones. */
+ int (*rule_modify_actions)(struct rule *rule,
+ const union ofp_action *actions, size_t n);
+
+ /* These functions implement the OpenFlow IP fragment handling policy. By
+ * default ('drop_frags' == false), an OpenFlow switch should treat IP
+ * fragments the same way as other packets (although TCP and UDP port
+ * numbers cannot be determined). With 'drop_frags' == true, the switch
+ * should drop all IP fragments without passing them through the flow
+ * table. */
+ bool (*get_drop_frags)(struct ofproto *ofproto);
+ void (*set_drop_frags)(struct ofproto *ofproto, bool drop_frags);
+
+ /* Implements the OpenFlow OFPT_PACKET_OUT command. The datapath should
+ * execute the 'n_actions' in the 'actions' array on 'packet'.
+ *
+ * The caller retains ownership of 'packet', so ->packet_out() should not
+ * modify or free it.
+ *
+ * This function must validate that the 'n_actions' elements in 'actions'
+ * are well-formed OpenFlow actions that can be correctly implemented by
+ * the datapath. If not, then it should return an OpenFlow error code (as
+ * returned by ofp_mkerr()).
+ *
+ * 'flow' reflects the flow information for 'packet'. All of the
+ * information in 'flow' is extracted from 'packet', except for
+ * flow->in_port, which is taken from the OFPT_PACKET_OUT message.
+ * flow->tun_id and its register values are zeroed.
+ *
+ * 'packet' is not matched against the OpenFlow flow table, so its
+ * statistics should not be included in OpenFlow flow statistics.
+ *
+ * Returns 0 if successful, otherwise an OpenFlow error code (as returned
+ * by ofp_mkerr()). */
+ int (*packet_out)(struct ofproto *ofproto, struct ofpbuf *packet,
+ const struct flow *flow,
+ const union ofp_action *actions,
+ size_t n_actions);
+
+/* ## ------------------------- ## */
+/* ## OFPP_NORMAL configuration ## */
+/* ## ------------------------- ## */
+
+ /* Configures NetFlow on 'ofproto' according to the options in
+ * 'netflow_options', or turns off NetFlow if 'netflow_options' is NULL.
+ *
+ * EOPNOTSUPP as a return value indicates that 'ofproto' does not support
+ * sFlow, as does a null pointer. */
+ int (*set_netflow)(struct ofproto *ofproto,
+ const struct netflow_options *netflow_options);
+
+ void (*get_netflow_ids)(const struct ofproto *ofproto,
+ uint8_t *engine_type, uint8_t *engine_id);
+
+ /* Configures sFlow on 'ofproto' according to the options in
+ * 'sflow_options', or turns off sFlow if 'sflow_options' is NULL.
+ *
+ * EOPNOTSUPP as a return value indicates that 'ofproto' does not support
+ * sFlow, as does a null pointer. */
+ int (*set_sflow)(struct ofproto *ofproto,
+ const struct ofproto_sflow_options *sflow_options);
+
+ /* Configures connectivity fault management on 'ofport'.
+ *
+ * If 'cfm' is nonnull, takes basic configuration from the configuration
+ * members in 'cfm', and the set of remote maintenance points from the
+ * 'n_remote_mps' elements in 'remote_mps'. Ignores the statistics members
+ * of 'cfm'.
+ *
+ * If 'cfm' is null, removes any connectivity fault management
+ * configuration from 'ofport'.
+ *
+ * EOPNOTSUPP as a return value indicates that this ofproto_class does not
+ * support CFM, as does a null pointer. */
+ int (*set_cfm)(struct ofport *ofport, const struct cfm *cfm,
+ const uint16_t *remote_mps, size_t n_remote_mps);
+
+ /* Stores the connectivity fault management object associated with 'ofport'
+ * in '*cfmp'. Stores a null pointer in '*cfmp' if CFM is not configured
+ * on 'ofport'. The caller must not modify or destroy the returned object.
+ *
+ * This function may be NULL if this ofproto_class does not support CFM. */
+ int (*get_cfm)(struct ofport *ofport, const struct cfm **cfmp);
+
+ /* If 's' is nonnull, this function registers a "bundle" associated with
+ * client data pointer 'aux' in 'ofproto'. A bundle is the same concept as
+ * a Port in OVSDB, that is, it consists of one or more "slave" devices
+ * (Interfaces, in OVSDB) along with VLAN and LACP configuration and, if
+ * there is more than one slave, a bonding configuration. If 'aux' is
+ * already registered then this function updates its configuration to 's'.
+ * Otherwise, this function registers a new bundle.
+ *
+ * If 's' is NULL, this function unregisters the bundle registered on
+ * 'ofproto' associated with client data pointer 'aux'. If no such bundle
+ * has been registered, this has no effect.
+ *
+ * This function affects only the behavior of the NXAST_AUTOPATH action and
+ * output to the OFPP_NORMAL port. An implementation that does not support
+ * it at all may set it to NULL or return EOPNOTSUPP. An implementation
+ * that supports only a subset of the functionality should implement what
+ * it can and return 0. */
+ int (*bundle_set)(struct ofproto *ofproto, void *aux,
+ const struct ofproto_bundle_settings *s);
+
+ /* If 'port' is part of any bundle, removes it from that bundle. If the
+ * bundle now has no ports, deletes the bundle. If the bundle now has only
+ * one port, deconfigures the bundle's bonding configuration. */
+ void (*bundle_remove)(struct ofport *ofport);
+
+ /* If 's' is nonnull, this function registers a mirror associated with
+ * client data pointer 'aux' in 'ofproto'. A mirror is the same concept as
+ * a Mirror in OVSDB. If 'aux' is already registered then this function
+ * updates its configuration to 's'. Otherwise, this function registers a
+ * new mirror.
+ *
+ * If 's' is NULL, this function unregisters the mirror registered on
+ * 'ofproto' associated with client data pointer 'aux'. If no such mirror
+ * has been registered, this has no effect.
+ *
+ * This function affects only the behavior of the OFPP_NORMAL action. An
+ * implementation that does not support it at all may set it to NULL or
+ * return EOPNOTSUPP. An implementation that supports only a subset of the
+ * functionality should implement what it can and return 0. */
+ int (*mirror_set)(struct ofproto *ofproto, void *aux,
+ const struct ofproto_mirror_settings *s);
+
+ /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs
+ * on which all packets are flooded, instead of using MAC learning. If
+ * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
+ *
+ * This function affects only the behavior of the OFPP_NORMAL action. An
+ * implementation that does not support it may set it to NULL or return
+ * EOPNOTSUPP. */
+ int (*set_flood_vlans)(struct ofproto *ofproto,
+ unsigned long *flood_vlans);
+
+ /* Returns true if 'aux' is a registered bundle that is currently in use as
+ * the output for a mirror. */
+ bool (*is_mirror_output_bundle)(struct ofproto *ofproto, void *aux);
+};
+
+extern const struct ofproto_class ofproto_dpif_class;
+
+int ofproto_class_register(const struct ofproto_class *);
+int ofproto_class_unregister(const struct ofproto_class *);
+
+void ofproto_add_flow(struct ofproto *, const struct cls_rule *,
+ const union ofp_action *, size_t n_actions);
+void ofproto_delete_flow(struct ofproto *, const struct cls_rule *);
+void ofproto_flush_flows(struct ofproto *);
+
+#endif /* ofproto/private.h */
git://git.onelab.eu / sliver-openvswitch.git / commitdiff