+++ /dev/null
-/*
- * Copyright (c) 2009 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.h"
-#include <errno.h>
-#include <inttypes.h>
-#include <net/if.h>
-#include <netinet/in.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include "classifier.h"
-#include "coverage.h"
-#include "discovery.h"
-#include "dpif.h"
-#include "executer.h"
-#include "fail-open.h"
-#include "in-band.h"
-#include "mac-learning.h"
-#include "netdev.h"
-#include "netflow.h"
-#include "odp-util.h"
-#include "ofp-print.h"
-#include "ofpbuf.h"
-#include "openflow/nicira-ext.h"
-#include "openflow/openflow.h"
-#include "openflow/openflow-mgmt.h"
-#include "openvswitch/datapath-protocol.h"
-#include "packets.h"
-#include "pinsched.h"
-#include "pktbuf.h"
-#include "poll-loop.h"
-#include "port-array.h"
-#include "rconn.h"
-#include "shash.h"
-#include "status.h"
-#include "stp.h"
-#include "svec.h"
-#include "tag.h"
-#include "timeval.h"
-#include "vconn.h"
-#include "vconn-ssl.h"
-#include "xtoxll.h"
-
-#define THIS_MODULE VLM_ofproto
-#include "vlog.h"
-
-enum {
- DP_GROUP_FLOOD = 0,
- DP_GROUP_ALL = 1
-};
-
-enum {
- TABLEID_HASH = 0,
- TABLEID_CLASSIFIER = 1
-};
-
-struct ofport {
- struct netdev *netdev;
- struct ofp_phy_port opp; /* In host byte order. */
-};
-
-static void ofport_free(struct ofport *);
-static void hton_ofp_phy_port(struct ofp_phy_port *);
-
-static int xlate_actions(const union ofp_action *in, size_t n_in,
- const flow_t *flow, struct ofproto *ofproto,
- const struct ofpbuf *packet,
- struct odp_actions *out, tag_type *tags,
- bool *may_setup_flow);
-
-struct rule {
- struct cls_rule cr;
-
- uint16_t idle_timeout; /* In seconds from time of last use. */
- uint16_t hard_timeout; /* In seconds from time of creation. */
- long long int used; /* Last-used time (0 if never used). */
- long long int created; /* Creation time. */
- uint64_t packet_count; /* Number of packets received. */
- uint64_t byte_count; /* Number of bytes received. */
- uint64_t accounted_bytes; /* Number of bytes passed to account_cb. */
- uint8_t tcp_flags; /* Bitwise-OR of all TCP flags seen. */
- uint8_t ip_tos; /* Last-seen IP type-of-service. */
- tag_type tags; /* Tags (set only by hooks). */
-
- /* If 'super' is non-NULL, this rule is a subrule, that is, it is an
- * exact-match rule (having cr.wc.wildcards of 0) generated from the
- * wildcard rule 'super'. In this case, 'list' is an element of the
- * super-rule's list.
- *
- * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of
- * a list of subrules. A super-rule with no wildcards (where
- * cr.wc.wildcards is 0) will never have any subrules. */
- struct rule *super;
- struct list list;
-
- /* OpenFlow actions.
- *
- * A subrule has no actions (it uses the super-rule's actions). */
- int n_actions;
- union ofp_action *actions;
-
- /* Datapath actions.
- *
- * A super-rule with wildcard fields never has ODP actions (since the
- * datapath only supports exact-match flows). */
- bool installed; /* Installed in datapath? */
- bool may_install; /* True ordinarily; false if actions must
- * be reassessed for every packet. */
- int n_odp_actions;
- union odp_action *odp_actions;
-};
-
-static inline bool
-rule_is_hidden(const struct rule *rule)
-{
- /* Subrules are merely an implementation detail, so hide them from the
- * controller. */
- if (rule->super != NULL) {
- return true;
- }
-
- /* Rules with priority higher than UINT16_MAX are set up by secchan itself
- * (e.g. by in-band control) and are intentionally hidden from the
- * controller. */
- if (rule->cr.priority > UINT16_MAX) {
- return true;
- }
-
- return false;
-}
-
-static struct rule *rule_create(struct rule *super, const union ofp_action *,
- size_t n_actions, uint16_t idle_timeout,
- uint16_t hard_timeout);
-static void rule_free(struct rule *);
-static void rule_destroy(struct ofproto *, struct rule *);
-static struct rule *rule_from_cls_rule(const struct cls_rule *);
-static void rule_insert(struct ofproto *, struct rule *,
- struct ofpbuf *packet, uint16_t in_port);
-static void rule_remove(struct ofproto *, struct rule *);
-static bool rule_make_actions(struct ofproto *, struct rule *,
- const struct ofpbuf *packet);
-static void rule_install(struct ofproto *, struct rule *,
- struct rule *displaced_rule);
-static void rule_uninstall(struct ofproto *, struct rule *);
-static void rule_post_uninstall(struct ofproto *, struct rule *);
-
-struct ofconn {
- struct list node;
- struct rconn *rconn;
- struct pktbuf *pktbuf;
- bool send_flow_exp;
- int miss_send_len;
-
- struct rconn_packet_counter *packet_in_counter;
-
- /* Number of OpenFlow messages queued as replies to OpenFlow requests, and
- * the maximum number before we stop reading OpenFlow requests. */
-#define OFCONN_REPLY_MAX 100
- struct rconn_packet_counter *reply_counter;
-};
-
-static struct ofconn *ofconn_create(struct ofproto *, struct rconn *);
-static void ofconn_destroy(struct ofconn *, struct ofproto *);
-static void ofconn_run(struct ofconn *, struct ofproto *);
-static void ofconn_wait(struct ofconn *);
-static void queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn,
- struct rconn_packet_counter *counter);
-
-struct ofproto {
- /* Settings. */
- uint64_t datapath_id; /* Datapath ID. */
- uint64_t fallback_dpid; /* Datapath ID if no better choice found. */
- uint64_t mgmt_id; /* Management channel identifier. */
- char *manufacturer; /* Manufacturer. */
- char *hardware; /* Hardware. */
- char *software; /* Software version. */
- char *serial; /* Serial number. */
-
- /* Datapath. */
- struct dpif *dpif;
- struct netdev_monitor *netdev_monitor;
- struct port_array ports; /* Index is ODP port nr; ofport->opp.port_no is
- * OFP port nr. */
- struct shash port_by_name;
- uint32_t max_ports;
-
- /* Configuration. */
- struct switch_status *switch_status;
- struct status_category *ss_cat;
- struct in_band *in_band;
- struct discovery *discovery;
- struct fail_open *fail_open;
- struct pinsched *miss_sched, *action_sched;
- struct executer *executer;
- struct netflow *netflow;
-
- /* Flow table. */
- struct classifier cls;
- bool need_revalidate;
- long long int next_expiration;
- struct tag_set revalidate_set;
-
- /* OpenFlow connections. */
- struct list all_conns;
- struct ofconn *controller;
- struct pvconn **listeners;
- size_t n_listeners;
- struct pvconn **snoops;
- size_t n_snoops;
-
- /* Hooks for ovs-vswitchd. */
- const struct ofhooks *ofhooks;
- void *aux;
-
- /* Used by default ofhooks. */
- struct mac_learning *ml;
-};
-
-static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
-
-static const struct ofhooks default_ofhooks;
-
-static uint64_t pick_datapath_id(struct dpif *, uint64_t fallback_dpid);
-static uint64_t pick_fallback_dpid(void);
-static void send_packet_in_miss(struct ofpbuf *, void *ofproto);
-static void send_packet_in_action(struct ofpbuf *, void *ofproto);
-static void update_used(struct ofproto *);
-static void update_stats(struct rule *, const struct odp_flow_stats *);
-static void expire_rule(struct cls_rule *, void *ofproto);
-static bool revalidate_rule(struct ofproto *p, struct rule *rule);
-static void revalidate_cb(struct cls_rule *rule_, void *p_);
-
-static void handle_odp_msg(struct ofproto *, struct ofpbuf *);
-
-static void handle_openflow(struct ofconn *, struct ofproto *,
- struct ofpbuf *);
-
-static void refresh_port_group(struct ofproto *, unsigned int group);
-static void update_port(struct ofproto *, const char *devname);
-static int init_ports(struct ofproto *);
-static void reinit_ports(struct ofproto *);
-
-int
-ofproto_create(const char *datapath, const struct ofhooks *ofhooks, void *aux,
- struct ofproto **ofprotop)
-{
- struct netdev_monitor *netdev_monitor;
- struct odp_stats stats;
- struct ofproto *p;
- struct dpif *dpif;
- int error;
-
- *ofprotop = NULL;
-
- /* Connect to datapath and start listening for messages. */
- error = dpif_open(datapath, &dpif);
- if (error) {
- VLOG_ERR("failed to open datapath %s: %s", datapath, strerror(error));
- return error;
- }
- error = dpif_get_dp_stats(dpif, &stats);
- if (error) {
- VLOG_ERR("failed to obtain stats for datapath %s: %s",
- datapath, strerror(error));
- dpif_close(dpif);
- return error;
- }
- error = dpif_recv_set_mask(dpif, ODPL_MISS | ODPL_ACTION);
- if (error) {
- VLOG_ERR("failed to listen on datapath %s: %s",
- datapath, strerror(error));
- dpif_close(dpif);
- return error;
- }
- dpif_flow_flush(dpif);
- dpif_recv_purge(dpif);
-
- /* Arrange to monitor datapath ports for status changes. */
- error = netdev_monitor_create(&netdev_monitor);
- if (error) {
- VLOG_ERR("failed to starting monitoring datapath %s: %s",
- datapath, strerror(error));
- dpif_close(dpif);
- return error;
- }
-
- /* Initialize settings. */
- p = xcalloc(1, sizeof *p);
- p->fallback_dpid = pick_fallback_dpid();
- p->datapath_id = pick_datapath_id(dpif, p->fallback_dpid);
- VLOG_INFO("using datapath ID %012"PRIx64, p->datapath_id);
- p->manufacturer = xstrdup("Nicira Networks, Inc.");
- p->hardware = xstrdup("Reference Implementation");
- p->software = xstrdup(VERSION BUILDNR);
- p->serial = xstrdup("None");
-
- /* Initialize datapath. */
- p->dpif = dpif;
- p->netdev_monitor = netdev_monitor;
- port_array_init(&p->ports);
- shash_init(&p->port_by_name);
- p->max_ports = stats.max_ports;
-
- /* Initialize submodules. */
- p->switch_status = switch_status_create(p);
- p->in_band = NULL;
- p->discovery = NULL;
- p->fail_open = NULL;
- p->miss_sched = p->action_sched = NULL;
- p->executer = NULL;
- p->netflow = NULL;
-
- /* Initialize flow table. */
- classifier_init(&p->cls);
- p->need_revalidate = false;
- p->next_expiration = time_msec() + 1000;
- tag_set_init(&p->revalidate_set);
-
- /* Initialize OpenFlow connections. */
- list_init(&p->all_conns);
- p->controller = ofconn_create(p, rconn_create(15, 15));
- p->controller->pktbuf = pktbuf_create();
- p->controller->miss_send_len = OFP_DEFAULT_MISS_SEND_LEN;
- p->listeners = NULL;
- p->n_listeners = 0;
- p->snoops = NULL;
- p->n_snoops = 0;
-
- /* Initialize hooks. */
- if (ofhooks) {
- p->ofhooks = ofhooks;
- p->aux = aux;
- p->ml = NULL;
- } else {
- p->ofhooks = &default_ofhooks;
- p->aux = p;
- p->ml = mac_learning_create();
- }
-
- /* Register switch status category. */
- p->ss_cat = switch_status_register(p->switch_status, "remote",
- rconn_status_cb, p->controller->rconn);
-
- /* Almost done... */
- error = init_ports(p);
- if (error) {
- ofproto_destroy(p);
- return error;
- }
-
- *ofprotop = p;
- return 0;
-}
-
-void
-ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
-{
- uint64_t old_dpid = p->datapath_id;
- p->datapath_id = (datapath_id
- ? datapath_id
- : pick_datapath_id(p->dpif, p->fallback_dpid));
- if (p->datapath_id != old_dpid) {
- VLOG_INFO("datapath ID changed to %012"PRIx64, p->datapath_id);
- rconn_reconnect(p->controller->rconn);
- }
-}
-
-void
-ofproto_set_mgmt_id(struct ofproto *p, uint64_t mgmt_id)
-{
- p->mgmt_id = mgmt_id;
-}
-
-void
-ofproto_set_probe_interval(struct ofproto *p, int probe_interval)
-{
- probe_interval = probe_interval ? MAX(probe_interval, 5) : 0;
- rconn_set_probe_interval(p->controller->rconn, probe_interval);
- if (p->fail_open) {
- int trigger_duration = probe_interval ? probe_interval * 3 : 15;
- fail_open_set_trigger_duration(p->fail_open, trigger_duration);
- }
-}
-
-void
-ofproto_set_max_backoff(struct ofproto *p, int max_backoff)
-{
- rconn_set_max_backoff(p->controller->rconn, max_backoff);
-}
-
-void
-ofproto_set_desc(struct ofproto *p,
- const char *manufacturer, const char *hardware,
- const char *software, const char *serial)
-{
- if (manufacturer) {
- free(p->manufacturer);
- p->manufacturer = xstrdup(manufacturer);
- }
- if (hardware) {
- free(p->hardware);
- p->hardware = xstrdup(hardware);
- }
- if (software) {
- free(p->software);
- p->software = xstrdup(software);
- }
- if (serial) {
- free(p->serial);
- p->serial = xstrdup(serial);
- }
-}
-
-int
-ofproto_set_in_band(struct ofproto *p, bool in_band)
-{
- if (in_band != (p->in_band != NULL)) {
- if (in_band) {
- return in_band_create(p, p->dpif, p->switch_status,
- p->controller->rconn, &p->in_band);
- } else {
- ofproto_set_discovery(p, false, NULL, true);
- in_band_destroy(p->in_band);
- p->in_band = NULL;
- }
- rconn_reconnect(p->controller->rconn);
- }
- return 0;
-}
-
-int
-ofproto_set_discovery(struct ofproto *p, bool discovery,
- const char *re, bool update_resolv_conf)
-{
- if (discovery != (p->discovery != NULL)) {
- if (discovery) {
- int error = ofproto_set_in_band(p, true);
- if (error) {
- return error;
- }
- error = discovery_create(re, update_resolv_conf,
- p->dpif, p->switch_status,
- &p->discovery);
- if (error) {
- return error;
- }
- } else {
- discovery_destroy(p->discovery);
- p->discovery = NULL;
- }
- rconn_disconnect(p->controller->rconn);
- } else if (discovery) {
- discovery_set_update_resolv_conf(p->discovery, update_resolv_conf);
- return discovery_set_accept_controller_re(p->discovery, re);
- }
- return 0;
-}
-
-int
-ofproto_set_controller(struct ofproto *ofproto, const char *controller)
-{
- if (ofproto->discovery) {
- return EINVAL;
- } else if (controller) {
- if (strcmp(rconn_get_name(ofproto->controller->rconn), controller)) {
- return rconn_connect(ofproto->controller->rconn, controller);
- } else {
- return 0;
- }
- } else {
- rconn_disconnect(ofproto->controller->rconn);
- return 0;
- }
-}
-
-static int
-set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp,
- const struct svec *svec)
-{
- struct pvconn **pvconns = *pvconnsp;
- size_t n_pvconns = *n_pvconnsp;
- int retval = 0;
- size_t i;
-
- for (i = 0; i < n_pvconns; i++) {
- pvconn_close(pvconns[i]);
- }
- free(pvconns);
-
- pvconns = xmalloc(svec->n * sizeof *pvconns);
- n_pvconns = 0;
- for (i = 0; i < svec->n; i++) {
- const char *name = svec->names[i];
- struct pvconn *pvconn;
- int error;
-
- error = pvconn_open(name, &pvconn);
- if (!error) {
- pvconns[n_pvconns++] = pvconn;
- } else {
- VLOG_ERR("failed to listen on %s: %s", name, strerror(error));
- if (!retval) {
- retval = error;
- }
- }
- }
-
- *pvconnsp = pvconns;
- *n_pvconnsp = n_pvconns;
-
- return retval;
-}
-
-int
-ofproto_set_listeners(struct ofproto *ofproto, const struct svec *listeners)
-{
- return set_pvconns(&ofproto->listeners, &ofproto->n_listeners, listeners);
-}
-
-int
-ofproto_set_snoops(struct ofproto *ofproto, const struct svec *snoops)
-{
- return set_pvconns(&ofproto->snoops, &ofproto->n_snoops, snoops);
-}
-
-int
-ofproto_set_netflow(struct ofproto *ofproto, const struct svec *collectors,
- uint8_t engine_type, uint8_t engine_id, bool add_id_to_iface)
-{
- if (collectors && collectors->n) {
- if (!ofproto->netflow) {
- ofproto->netflow = netflow_create();
- }
- netflow_set_engine(ofproto->netflow, engine_type, engine_id,
- add_id_to_iface);
- return netflow_set_collectors(ofproto->netflow, collectors);
- } else {
- netflow_destroy(ofproto->netflow);
- ofproto->netflow = NULL;
- return 0;
- }
-}
-
-void
-ofproto_set_failure(struct ofproto *ofproto, bool fail_open)
-{
- if (fail_open) {
- struct rconn *rconn = ofproto->controller->rconn;
- int trigger_duration = rconn_get_probe_interval(rconn) * 3;
- if (!ofproto->fail_open) {
- ofproto->fail_open = fail_open_create(ofproto, trigger_duration,
- ofproto->switch_status,
- rconn);
- } else {
- fail_open_set_trigger_duration(ofproto->fail_open,
- trigger_duration);
- }
- } else {
- fail_open_destroy(ofproto->fail_open);
- ofproto->fail_open = NULL;
- }
-}
-
-void
-ofproto_set_rate_limit(struct ofproto *ofproto,
- int rate_limit, int burst_limit)
-{
- if (rate_limit > 0) {
- if (!ofproto->miss_sched) {
- ofproto->miss_sched = pinsched_create(rate_limit, burst_limit,
- ofproto->switch_status);
- ofproto->action_sched = pinsched_create(rate_limit, burst_limit,
- NULL);
- } else {
- pinsched_set_limits(ofproto->miss_sched, rate_limit, burst_limit);
- pinsched_set_limits(ofproto->action_sched,
- rate_limit, burst_limit);
- }
- } else {
- pinsched_destroy(ofproto->miss_sched);
- ofproto->miss_sched = NULL;
- pinsched_destroy(ofproto->action_sched);
- ofproto->action_sched = NULL;
- }
-}
-
-int
-ofproto_set_stp(struct ofproto *ofproto UNUSED, bool enable_stp)
-{
- /* XXX */
- if (enable_stp) {
- VLOG_WARN("STP is not yet implemented");
- return EINVAL;
- } else {
- return 0;
- }
-}
-
-int
-ofproto_set_remote_execution(struct ofproto *ofproto, const char *command_acl,
- const char *command_dir)
-{
- if (command_acl) {
- if (!ofproto->executer) {
- return executer_create(command_acl, command_dir,
- &ofproto->executer);
- } else {
- executer_set_acl(ofproto->executer, command_acl, command_dir);
- }
- } else {
- executer_destroy(ofproto->executer);
- ofproto->executer = NULL;
- }
- return 0;
-}
-
-uint64_t
-ofproto_get_datapath_id(const struct ofproto *ofproto)
-{
- return ofproto->datapath_id;
-}
-
-int
-ofproto_get_probe_interval(const struct ofproto *ofproto)
-{
- return rconn_get_probe_interval(ofproto->controller->rconn);
-}
-
-int
-ofproto_get_max_backoff(const struct ofproto *ofproto)
-{
- return rconn_get_max_backoff(ofproto->controller->rconn);
-}
-
-bool
-ofproto_get_in_band(const struct ofproto *ofproto)
-{
- return ofproto->in_band != NULL;
-}
-
-bool
-ofproto_get_discovery(const struct ofproto *ofproto)
-{
- return ofproto->discovery != NULL;
-}
-
-const char *
-ofproto_get_controller(const struct ofproto *ofproto)
-{
- return rconn_get_name(ofproto->controller->rconn);
-}
-
-void
-ofproto_get_listeners(const struct ofproto *ofproto, struct svec *listeners)
-{
- size_t i;
-
- for (i = 0; i < ofproto->n_listeners; i++) {
- svec_add(listeners, pvconn_get_name(ofproto->listeners[i]));
- }
-}
-
-void
-ofproto_get_snoops(const struct ofproto *ofproto, struct svec *snoops)
-{
- size_t i;
-
- for (i = 0; i < ofproto->n_snoops; i++) {
- svec_add(snoops, pvconn_get_name(ofproto->snoops[i]));
- }
-}
-
-void
-ofproto_destroy(struct ofproto *p)
-{
- struct ofconn *ofconn, *next_ofconn;
- struct ofport *ofport;
- unsigned int port_no;
- size_t i;
-
- if (!p) {
- return;
- }
-
- ofproto_flush_flows(p);
- classifier_destroy(&p->cls);
-
- LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node,
- &p->all_conns) {
- ofconn_destroy(ofconn, p);
- }
-
- dpif_close(p->dpif);
- netdev_monitor_destroy(p->netdev_monitor);
- PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) {
- ofport_free(ofport);
- }
- shash_destroy(&p->port_by_name);
-
- switch_status_destroy(p->switch_status);
- in_band_destroy(p->in_band);
- discovery_destroy(p->discovery);
- fail_open_destroy(p->fail_open);
- pinsched_destroy(p->miss_sched);
- pinsched_destroy(p->action_sched);
- executer_destroy(p->executer);
- netflow_destroy(p->netflow);
-
- switch_status_unregister(p->ss_cat);
-
- for (i = 0; i < p->n_listeners; i++) {
- pvconn_close(p->listeners[i]);
- }
- free(p->listeners);
-
- for (i = 0; i < p->n_snoops; i++) {
- pvconn_close(p->snoops[i]);
- }
- free(p->snoops);
-
- mac_learning_destroy(p->ml);
-
- free(p);
-}
-
-int
-ofproto_run(struct ofproto *p)
-{
- int error = ofproto_run1(p);
- if (!error) {
- error = ofproto_run2(p, false);
- }
- return error;
-}
-
-static void
-process_port_change(struct ofproto *ofproto, int error, char *devname)
-{
- if (error == ENOBUFS) {
- reinit_ports(ofproto);
- } else if (!error) {
- update_port(ofproto, devname);
- free(devname);
- }
-}
-
-int
-ofproto_run1(struct ofproto *p)
-{
- struct ofconn *ofconn, *next_ofconn;
- char *devname;
- int error;
- int i;
-
- for (i = 0; i < 50; i++) {
- struct ofpbuf *buf;
- int error;
-
- error = dpif_recv(p->dpif, &buf);
- if (error) {
- if (error == ENODEV) {
- /* Someone destroyed the datapath behind our back. The caller
- * better destroy us and give up, because we're just going to
- * spin from here on out. */
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
- VLOG_ERR_RL(&rl, "%s: datapath was destroyed externally",
- dpif_name(p->dpif));
- return ENODEV;
- }
- break;
- }
-
- handle_odp_msg(p, buf);
- }
-
- while ((error = dpif_port_poll(p->dpif, &devname)) != EAGAIN) {
- process_port_change(p, error, devname);
- }
- while ((error = netdev_monitor_poll(p->netdev_monitor,
- &devname)) != EAGAIN) {
- process_port_change(p, error, devname);
- }
-
- if (p->in_band) {
- in_band_run(p->in_band);
- }
- if (p->discovery) {
- char *controller_name;
- if (rconn_is_connectivity_questionable(p->controller->rconn)) {
- discovery_question_connectivity(p->discovery);
- }
- if (discovery_run(p->discovery, &controller_name)) {
- if (controller_name) {
- rconn_connect(p->controller->rconn, controller_name);
- } else {
- rconn_disconnect(p->controller->rconn);
- }
- }
- }
- if (p->fail_open) {
- fail_open_run(p->fail_open);
- }
- pinsched_run(p->miss_sched, send_packet_in_miss, p);
- pinsched_run(p->action_sched, send_packet_in_action, p);
- if (p->executer) {
- executer_run(p->executer);
- }
-
- LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node,
- &p->all_conns) {
- ofconn_run(ofconn, p);
- }
-
- for (i = 0; i < p->n_listeners; i++) {
- struct vconn *vconn;
- int retval;
-
- retval = pvconn_accept(p->listeners[i], OFP_VERSION, &vconn);
- if (!retval) {
- ofconn_create(p, rconn_new_from_vconn("passive", vconn));
- } else if (retval != EAGAIN) {
- VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
- }
- }
-
- for (i = 0; i < p->n_snoops; i++) {
- struct vconn *vconn;
- int retval;
-
- retval = pvconn_accept(p->snoops[i], OFP_VERSION, &vconn);
- if (!retval) {
- rconn_add_monitor(p->controller->rconn, vconn);
- } else if (retval != EAGAIN) {
- VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
- }
- }
-
- if (time_msec() >= p->next_expiration) {
- COVERAGE_INC(ofproto_expiration);
- p->next_expiration = time_msec() + 1000;
- update_used(p);
-
- classifier_for_each(&p->cls, CLS_INC_ALL, expire_rule, p);
-
- /* Let the hook know that we're at a stable point: all outstanding data
- * in existing flows has been accounted to the account_cb. Thus, the
- * hook can now reasonably do operations that depend on having accurate
- * flow volume accounting (currently, that's just bond rebalancing). */
- if (p->ofhooks->account_checkpoint_cb) {
- p->ofhooks->account_checkpoint_cb(p->aux);
- }
- }
-
- if (p->netflow) {
- netflow_run(p->netflow);
- }
-
- return 0;
-}
-
-struct revalidate_cbdata {
- struct ofproto *ofproto;
- bool revalidate_all; /* Revalidate all exact-match rules? */
- bool revalidate_subrules; /* Revalidate all exact-match subrules? */
- struct tag_set revalidate_set; /* Set of tags to revalidate. */
-};
-
-int
-ofproto_run2(struct ofproto *p, bool revalidate_all)
-{
- if (p->need_revalidate || revalidate_all
- || !tag_set_is_empty(&p->revalidate_set)) {
- struct revalidate_cbdata cbdata;
- cbdata.ofproto = p;
- cbdata.revalidate_all = revalidate_all;
- cbdata.revalidate_subrules = p->need_revalidate;
- cbdata.revalidate_set = p->revalidate_set;
- tag_set_init(&p->revalidate_set);
- COVERAGE_INC(ofproto_revalidate);
- classifier_for_each(&p->cls, CLS_INC_EXACT, revalidate_cb, &cbdata);
- p->need_revalidate = false;
- }
-
- return 0;
-}
-
-void
-ofproto_wait(struct ofproto *p)
-{
- struct ofconn *ofconn;
- size_t i;
-
- dpif_recv_wait(p->dpif);
- dpif_port_poll_wait(p->dpif);
- netdev_monitor_poll_wait(p->netdev_monitor);
- LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
- ofconn_wait(ofconn);
- }
- if (p->in_band) {
- in_band_wait(p->in_band);
- }
- if (p->discovery) {
- discovery_wait(p->discovery);
- }
- if (p->fail_open) {
- fail_open_wait(p->fail_open);
- }
- pinsched_wait(p->miss_sched);
- pinsched_wait(p->action_sched);
- if (p->executer) {
- executer_wait(p->executer);
- }
- if (!tag_set_is_empty(&p->revalidate_set)) {
- poll_immediate_wake();
- }
- if (p->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 if (p->next_expiration != LLONG_MAX) {
- poll_timer_wait(p->next_expiration - time_msec());
- }
- for (i = 0; i < p->n_listeners; i++) {
- pvconn_wait(p->listeners[i]);
- }
- for (i = 0; i < p->n_snoops; i++) {
- pvconn_wait(p->snoops[i]);
- }
-}
-
-void
-ofproto_revalidate(struct ofproto *ofproto, tag_type tag)
-{
- tag_set_add(&ofproto->revalidate_set, tag);
-}
-
-struct tag_set *
-ofproto_get_revalidate_set(struct ofproto *ofproto)
-{
- return &ofproto->revalidate_set;
-}
-
-bool
-ofproto_is_alive(const struct ofproto *p)
-{
- return p->discovery || rconn_is_alive(p->controller->rconn);
-}
-
-int
-ofproto_send_packet(struct ofproto *p, const flow_t *flow,
- const union ofp_action *actions, size_t n_actions,
- const struct ofpbuf *packet)
-{
- struct odp_actions odp_actions;
- int error;
-
- error = xlate_actions(actions, n_actions, flow, p, packet, &odp_actions,
- NULL, NULL);
- if (error) {
- return error;
- }
-
- /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
- * error code? */
- dpif_execute(p->dpif, flow->in_port, odp_actions.actions,
- odp_actions.n_actions, packet);
- return 0;
-}
-
-void
-ofproto_add_flow(struct ofproto *p,
- const flow_t *flow, uint32_t wildcards, unsigned int priority,
- const union ofp_action *actions, size_t n_actions,
- int idle_timeout)
-{
- struct rule *rule;
- rule = rule_create(NULL, actions, n_actions,
- idle_timeout >= 0 ? idle_timeout : 5 /* XXX */, 0);
- cls_rule_from_flow(&rule->cr, flow, wildcards, priority);
- rule_insert(p, rule, NULL, 0);
-}
-
-void
-ofproto_delete_flow(struct ofproto *ofproto, const flow_t *flow,
- uint32_t wildcards, unsigned int priority)
-{
- struct rule *rule;
-
- rule = rule_from_cls_rule(classifier_find_rule_exactly(&ofproto->cls,
- flow, wildcards,
- priority));
- if (rule) {
- rule_remove(ofproto, rule);
- }
-}
-
-static void
-destroy_rule(struct cls_rule *rule_, void *ofproto_)
-{
- struct rule *rule = rule_from_cls_rule(rule_);
- struct ofproto *ofproto = ofproto_;
-
- /* Mark the flow as not installed, even though it might really be
- * installed, so that rule_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 flows with dpif_flow_flush(). */
- rule->installed = false;
-
- rule_remove(ofproto, rule);
-}
-
-void
-ofproto_flush_flows(struct ofproto *ofproto)
-{
- COVERAGE_INC(ofproto_flush);
- classifier_for_each(&ofproto->cls, CLS_INC_ALL, destroy_rule, ofproto);
- dpif_flow_flush(ofproto->dpif);
- if (ofproto->in_band) {
- in_band_flushed(ofproto->in_band);
- }
- if (ofproto->fail_open) {
- fail_open_flushed(ofproto->fail_open);
- }
-}
-\f
-static void
-reinit_ports(struct ofproto *p)
-{
- struct svec devnames;
- struct ofport *ofport;
- unsigned int port_no;
- struct odp_port *odp_ports;
- size_t n_odp_ports;
- size_t i;
-
- svec_init(&devnames);
- PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) {
- svec_add (&devnames, (char *) ofport->opp.name);
- }
- dpif_port_list(p->dpif, &odp_ports, &n_odp_ports);
- for (i = 0; i < n_odp_ports; i++) {
- svec_add (&devnames, odp_ports[i].devname);
- }
- free(odp_ports);
-
- svec_sort_unique(&devnames);
- for (i = 0; i < devnames.n; i++) {
- update_port(p, devnames.names[i]);
- }
- svec_destroy(&devnames);
-}
-
-static void
-refresh_port_group(struct ofproto *p, unsigned int group)
-{
- uint16_t *ports;
- size_t n_ports;
- struct ofport *port;
- unsigned int port_no;
-
- assert(group == DP_GROUP_ALL || group == DP_GROUP_FLOOD);
-
- ports = xmalloc(port_array_count(&p->ports) * sizeof *ports);
- n_ports = 0;
- PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
- if (group == DP_GROUP_ALL || !(port->opp.config & OFPPC_NO_FLOOD)) {
- ports[n_ports++] = port_no;
- }
- }
- dpif_port_group_set(p->dpif, group, ports, n_ports);
- free(ports);
-}
-
-static void
-refresh_port_groups(struct ofproto *p)
-{
- refresh_port_group(p, DP_GROUP_FLOOD);
- refresh_port_group(p, DP_GROUP_ALL);
-}
-
-static struct ofport *
-make_ofport(const struct odp_port *odp_port)
-{
- enum netdev_flags flags;
- struct ofport *ofport;
- struct netdev *netdev;
- bool carrier;
- int error;
-
- error = netdev_open(odp_port->devname, NETDEV_ETH_TYPE_NONE, &netdev);
- if (error) {
- VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s "
- "cannot be opened (%s)",
- odp_port->devname, odp_port->port,
- odp_port->devname, strerror(error));
- return NULL;
- }
-
- ofport = xmalloc(sizeof *ofport);
- ofport->netdev = netdev;
- ofport->opp.port_no = odp_port_to_ofp_port(odp_port->port);
- memcpy(ofport->opp.hw_addr, netdev_get_etheraddr(netdev), ETH_ALEN);
- memcpy(ofport->opp.name, odp_port->devname,
- MIN(sizeof ofport->opp.name, sizeof odp_port->devname));
- ofport->opp.name[sizeof ofport->opp.name - 1] = '\0';
-
- netdev_get_flags(netdev, &flags);
- ofport->opp.config = flags & NETDEV_UP ? 0 : OFPPC_PORT_DOWN;
-
- netdev_get_carrier(netdev, &carrier);
- ofport->opp.state = carrier ? 0 : OFPPS_LINK_DOWN;
-
- netdev_get_features(netdev,
- &ofport->opp.curr, &ofport->opp.advertised,
- &ofport->opp.supported, &ofport->opp.peer);
- return ofport;
-}
-
-static bool
-ofport_conflicts(const struct ofproto *p, const struct odp_port *odp_port)
-{
- if (port_array_get(&p->ports, odp_port->port)) {
- VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath",
- odp_port->port);
- return true;
- } else if (shash_find(&p->port_by_name, odp_port->devname)) {
- VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath",
- odp_port->devname);
- return true;
- } else {
- return false;
- }
-}
-
-static int
-ofport_equal(const struct ofport *a_, const struct ofport *b_)
-{
- const struct ofp_phy_port *a = &a_->opp;
- const struct ofp_phy_port *b = &b_->opp;
-
- BUILD_ASSERT_DECL(sizeof *a == 48); /* Detect ofp_phy_port changes. */
- return (a->port_no == b->port_no
- && !memcmp(a->hw_addr, b->hw_addr, sizeof a->hw_addr)
- && !strcmp((char *) a->name, (char *) b->name)
- && a->state == b->state
- && a->config == b->config
- && a->curr == b->curr
- && a->advertised == b->advertised
- && a->supported == b->supported
- && a->peer == b->peer);
-}
-
-static void
-send_port_status(struct ofproto *p, const struct ofport *ofport,
- uint8_t reason)
-{
- /* XXX Should limit the number of queued port status change messages. */
- struct ofconn *ofconn;
- LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
- struct ofp_port_status *ops;
- struct ofpbuf *b;
-
- ops = make_openflow_xid(sizeof *ops, OFPT_PORT_STATUS, 0, &b);
- ops->reason = reason;
- ops->desc = ofport->opp;
- hton_ofp_phy_port(&ops->desc);
- queue_tx(b, ofconn, NULL);
- }
- if (p->ofhooks->port_changed_cb) {
- p->ofhooks->port_changed_cb(reason, &ofport->opp, p->aux);
- }
-}
-
-static void
-ofport_install(struct ofproto *p, struct ofport *ofport)
-{
- netdev_monitor_add(p->netdev_monitor, ofport->netdev);
- port_array_set(&p->ports, ofp_port_to_odp_port(ofport->opp.port_no),
- ofport);
- shash_add(&p->port_by_name, (char *) ofport->opp.name, ofport);
-}
-
-static void
-ofport_remove(struct ofproto *p, struct ofport *ofport)
-{
- netdev_monitor_remove(p->netdev_monitor, ofport->netdev);
- port_array_set(&p->ports, ofp_port_to_odp_port(ofport->opp.port_no), NULL);
- shash_delete(&p->port_by_name,
- shash_find(&p->port_by_name, (char *) ofport->opp.name));
-}
-
-static void
-ofport_free(struct ofport *ofport)
-{
- if (ofport) {
- netdev_close(ofport->netdev);
- free(ofport);
- }
-}
-
-static void
-update_port(struct ofproto *p, const char *devname)
-{
- struct odp_port odp_port;
- struct ofport *ofport;
- int error;
-
- COVERAGE_INC(ofproto_update_port);
- ofport = shash_find_data(&p->port_by_name, devname);
- error = dpif_port_query_by_name(p->dpif, devname, &odp_port);
- if (!error) {
- if (!ofport) {
- /* New port. */
- if (!ofport_conflicts(p, &odp_port)) {
- ofport = make_ofport(&odp_port);
- if (ofport) {
- ofport_install(p, ofport);
- send_port_status(p, ofport, OFPPR_ADD);
- }
- }
- } else {
- /* Modified port. */
- struct ofport *new_ofport = make_ofport(&odp_port);
- if (!new_ofport) {
- return;
- }
-
- new_ofport->opp.config &= OFPPC_PORT_DOWN;
- new_ofport->opp.config |= ofport->opp.config & ~OFPPC_PORT_DOWN;
- if (ofport_equal(ofport, new_ofport)) {
- /* False alarm--no change. */
- ofport_free(new_ofport);
- } else {
- ofport_remove(p, ofport);
- ofport_install(p, new_ofport);
- ofport_free(ofport);
- send_port_status(p, new_ofport, OFPPR_MODIFY);
- }
- }
- } else if (error == ENOENT || error == ENODEV) {
- /* Deleted port. */
- if (ofport) {
- send_port_status(p, ofport, OFPPR_DELETE);
- ofport_remove(p, ofport);
- ofport_free(ofport);
- }
- } else {
- VLOG_WARN_RL(&rl, "dpif_port_query_by_name returned unexpected error "
- "%s", strerror(error));
- return;
- }
- refresh_port_groups(p);
-}
-
-static int
-init_ports(struct ofproto *p)
-{
- struct odp_port *ports;
- size_t n_ports;
- size_t i;
- int error;
-
- error = dpif_port_list(p->dpif, &ports, &n_ports);
- if (error) {
- return error;
- }
-
- for (i = 0; i < n_ports; i++) {
- const struct odp_port *odp_port = &ports[i];
- if (!ofport_conflicts(p, odp_port)) {
- struct ofport *ofport = make_ofport(odp_port);
- if (ofport) {
- ofport_install(p, ofport);
- }
- }
- }
- free(ports);
- refresh_port_groups(p);
- return 0;
-}
-\f
-static struct ofconn *
-ofconn_create(struct ofproto *p, struct rconn *rconn)
-{
- struct ofconn *ofconn = xmalloc(sizeof *ofconn);
- list_push_back(&p->all_conns, &ofconn->node);
- ofconn->rconn = rconn;
- ofconn->pktbuf = NULL;
- ofconn->send_flow_exp = false;
- ofconn->miss_send_len = 0;
- ofconn->packet_in_counter = rconn_packet_counter_create ();
- ofconn->reply_counter = rconn_packet_counter_create ();
- return ofconn;
-}
-
-static void
-ofconn_destroy(struct ofconn *ofconn, struct ofproto *p)
-{
- if (p->executer) {
- executer_rconn_closing(p->executer, ofconn->rconn);
- }
-
- list_remove(&ofconn->node);
- rconn_destroy(ofconn->rconn);
- rconn_packet_counter_destroy(ofconn->packet_in_counter);
- rconn_packet_counter_destroy(ofconn->reply_counter);
- pktbuf_destroy(ofconn->pktbuf);
- free(ofconn);
-}
-
-static void
-ofconn_run(struct ofconn *ofconn, struct ofproto *p)
-{
- int iteration;
-
- rconn_run(ofconn->rconn);
-
- if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) {
- /* Limit the number of iterations to prevent other tasks from
- * starving. */
- for (iteration = 0; iteration < 50; iteration++) {
- struct ofpbuf *of_msg = rconn_recv(ofconn->rconn);
- if (!of_msg) {
- break;
- }
- handle_openflow(ofconn, p, of_msg);
- ofpbuf_delete(of_msg);
- }
- }
-
- if (ofconn != p->controller && !rconn_is_alive(ofconn->rconn)) {
- ofconn_destroy(ofconn, p);
- }
-}
-
-static void
-ofconn_wait(struct ofconn *ofconn)
-{
- rconn_run_wait(ofconn->rconn);
- if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) {
- rconn_recv_wait(ofconn->rconn);
- } else {
- COVERAGE_INC(ofproto_ofconn_stuck);
- }
-}
-\f
-/* Caller is responsible for initializing the 'cr' member of the returned
- * rule. */
-static struct rule *
-rule_create(struct rule *super,
- const union ofp_action *actions, size_t n_actions,
- uint16_t idle_timeout, uint16_t hard_timeout)
-{
- struct rule *rule = xcalloc(1, sizeof *rule);
- rule->idle_timeout = idle_timeout;
- rule->hard_timeout = hard_timeout;
- rule->used = rule->created = time_msec();
- rule->super = super;
- if (super) {
- list_push_back(&super->list, &rule->list);
- } else {
- list_init(&rule->list);
- }
- rule->n_actions = n_actions;
- rule->actions = xmemdup(actions, n_actions * sizeof *actions);
- return rule;
-}
-
-static struct rule *
-rule_from_cls_rule(const struct cls_rule *cls_rule)
-{
- return cls_rule ? CONTAINER_OF(cls_rule, struct rule, cr) : NULL;
-}
-
-static void
-rule_free(struct rule *rule)
-{
- free(rule->actions);
- free(rule->odp_actions);
- free(rule);
-}
-
-/* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
- * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
- * through all of its subrules and revalidates them, destroying any that no
- * longer has a super-rule (which is probably all of them).
- *
- * Before calling this function, the caller must make have removed 'rule' from
- * the classifier. If 'rule' is an exact-match rule, the caller is also
- * responsible for ensuring that it has been uninstalled from the datapath. */
-static void
-rule_destroy(struct ofproto *ofproto, struct rule *rule)
-{
- if (!rule->super) {
- struct rule *subrule, *next;
- LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) {
- revalidate_rule(ofproto, subrule);
- }
- } else {
- list_remove(&rule->list);
- }
- rule_free(rule);
-}
-
-static bool
-rule_has_out_port(const struct rule *rule, uint16_t out_port)
-{
- const union ofp_action *oa;
- struct actions_iterator i;
-
- if (out_port == htons(OFPP_NONE)) {
- return true;
- }
- for (oa = actions_first(&i, rule->actions, rule->n_actions); oa;
- oa = actions_next(&i)) {
- if (oa->type == htons(OFPAT_OUTPUT) && oa->output.port == out_port) {
- return true;
- }
- }
- return false;
-}
-
-/* Executes the actions indicated by 'rule' on 'packet', which is in flow
- * 'flow' and is considered to have arrived on ODP port 'in_port'.
- *
- * The flow that 'packet' actually contains does not need to actually match
- * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
- * the packet and byte counters for 'rule' will be credited for the packet sent
- * out whether or not the packet actually matches 'rule'.
- *
- * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
- * the caller must already have accurately composed ODP actions for it given
- * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
- * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
- * function will compose a set of ODP actions based on 'rule''s OpenFlow
- * actions and apply them to 'packet'. */
-static void
-rule_execute(struct ofproto *ofproto, struct rule *rule,
- struct ofpbuf *packet, const flow_t *flow)
-{
- const union odp_action *actions;
- size_t n_actions;
- struct odp_actions a;
-
- /* Grab or compose the ODP actions.
- *
- * The special case for an exact-match 'rule' where 'flow' is not the
- * rule's flow is important to avoid, e.g., sending a packet out its input
- * port simply because the ODP actions were composed for the wrong
- * scenario. */
- if (rule->cr.wc.wildcards || !flow_equal(flow, &rule->cr.flow)) {
- struct rule *super = rule->super ? rule->super : rule;
- if (xlate_actions(super->actions, super->n_actions, flow, ofproto,
- packet, &a, NULL, 0)) {
- return;
- }
- actions = a.actions;
- n_actions = a.n_actions;
- } else {
- actions = rule->odp_actions;
- n_actions = rule->n_odp_actions;
- }
-
- /* Execute the ODP actions. */
- if (!dpif_execute(ofproto->dpif, flow->in_port,
- actions, n_actions, packet)) {
- struct odp_flow_stats stats;
- flow_extract_stats(flow, packet, &stats);
- update_stats(rule, &stats);
- rule->used = time_msec();
- }
-}
-
-static void
-rule_insert(struct ofproto *p, struct rule *rule, struct ofpbuf *packet,
- uint16_t in_port)
-{
- struct rule *displaced_rule;
-
- /* Insert the rule in the classifier. */
- displaced_rule = rule_from_cls_rule(classifier_insert(&p->cls, &rule->cr));
- if (!rule->cr.wc.wildcards) {
- rule_make_actions(p, rule, packet);
- }
-
- /* Send the packet and credit it to the rule. */
- if (packet) {
- flow_t flow;
- flow_extract(packet, in_port, &flow);
- rule_execute(p, rule, packet, &flow);
- }
-
- /* Install the rule in the datapath only after sending the packet, to
- * avoid packet reordering. */
- if (rule->cr.wc.wildcards) {
- COVERAGE_INC(ofproto_add_wc_flow);
- p->need_revalidate = true;
- } else {
- rule_install(p, rule, displaced_rule);
- }
-
- /* Free the rule that was displaced, if any. */
- if (displaced_rule) {
- rule_destroy(p, displaced_rule);
- }
-}
-
-static struct rule *
-rule_create_subrule(struct ofproto *ofproto, struct rule *rule,
- const flow_t *flow)
-{
- struct rule *subrule = rule_create(rule, NULL, 0,
- rule->idle_timeout, rule->hard_timeout);
- COVERAGE_INC(ofproto_subrule_create);
- cls_rule_from_flow(&subrule->cr, flow, 0,
- (rule->cr.priority <= UINT16_MAX ? UINT16_MAX
- : rule->cr.priority));
- classifier_insert_exact(&ofproto->cls, &subrule->cr);
-
- return subrule;
-}
-
-static void
-rule_remove(struct ofproto *ofproto, struct rule *rule)
-{
- if (rule->cr.wc.wildcards) {
- COVERAGE_INC(ofproto_del_wc_flow);
- ofproto->need_revalidate = true;
- } else {
- rule_uninstall(ofproto, rule);
- }
- classifier_remove(&ofproto->cls, &rule->cr);
- rule_destroy(ofproto, rule);
-}
-
-/* Returns true if the actions changed, false otherwise. */
-static bool
-rule_make_actions(struct ofproto *p, struct rule *rule,
- const struct ofpbuf *packet)
-{
- const struct rule *super;
- struct odp_actions a;
- size_t actions_len;
-
- assert(!rule->cr.wc.wildcards);
-
- super = rule->super ? rule->super : rule;
- rule->tags = 0;
- xlate_actions(super->actions, super->n_actions, &rule->cr.flow, p,
- packet, &a, &rule->tags, &rule->may_install);
-
- actions_len = a.n_actions * sizeof *a.actions;
- if (rule->n_odp_actions != a.n_actions
- || memcmp(rule->odp_actions, a.actions, actions_len)) {
- COVERAGE_INC(ofproto_odp_unchanged);
- free(rule->odp_actions);
- rule->n_odp_actions = a.n_actions;
- rule->odp_actions = xmemdup(a.actions, actions_len);
- return true;
- } else {
- return false;
- }
-}
-
-static int
-do_put_flow(struct ofproto *ofproto, struct rule *rule, int flags,
- struct odp_flow_put *put)
-{
- memset(&put->flow.stats, 0, sizeof put->flow.stats);
- put->flow.key = rule->cr.flow;
- put->flow.actions = rule->odp_actions;
- put->flow.n_actions = rule->n_odp_actions;
- put->flags = flags;
- return dpif_flow_put(ofproto->dpif, put);
-}
-
-static void
-rule_install(struct ofproto *p, struct rule *rule, struct rule *displaced_rule)
-{
- assert(!rule->cr.wc.wildcards);
-
- if (rule->may_install) {
- struct odp_flow_put put;
- if (!do_put_flow(p, rule,
- ODPPF_CREATE | ODPPF_MODIFY | ODPPF_ZERO_STATS,
- &put)) {
- rule->installed = true;
- if (displaced_rule) {
- update_stats(rule, &put.flow.stats);
- rule_post_uninstall(p, displaced_rule);
- }
- }
- } else if (displaced_rule) {
- rule_uninstall(p, displaced_rule);
- }
-}
-
-static void
-rule_reinstall(struct ofproto *ofproto, struct rule *rule)
-{
- if (rule->installed) {
- struct odp_flow_put put;
- COVERAGE_INC(ofproto_dp_missed);
- do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY, &put);
- } else {
- rule_install(ofproto, rule, NULL);
- }
-}
-
-static void
-rule_update_actions(struct ofproto *ofproto, struct rule *rule)
-{
- bool actions_changed = rule_make_actions(ofproto, rule, NULL);
- if (rule->may_install) {
- if (rule->installed) {
- if (actions_changed) {
- /* XXX should really do rule_post_uninstall() for the *old* set
- * of actions, and distinguish the old stats from the new. */
- struct odp_flow_put put;
- do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY, &put);
- }
- } else {
- rule_install(ofproto, rule, NULL);
- }
- } else {
- rule_uninstall(ofproto, rule);
- }
-}
-
-static void
-rule_account(struct ofproto *ofproto, struct rule *rule, uint64_t extra_bytes)
-{
- uint64_t total_bytes = rule->byte_count + extra_bytes;
-
- if (ofproto->ofhooks->account_flow_cb
- && total_bytes > rule->accounted_bytes)
- {
- ofproto->ofhooks->account_flow_cb(
- &rule->cr.flow, rule->odp_actions, rule->n_odp_actions,
- total_bytes - rule->accounted_bytes, ofproto->aux);
- rule->accounted_bytes = total_bytes;
- }
-}
-
-static void
-rule_uninstall(struct ofproto *p, struct rule *rule)
-{
- assert(!rule->cr.wc.wildcards);
- if (rule->installed) {
- struct odp_flow odp_flow;
-
- odp_flow.key = rule->cr.flow;
- odp_flow.actions = NULL;
- odp_flow.n_actions = 0;
- if (!dpif_flow_del(p->dpif, &odp_flow)) {
- update_stats(rule, &odp_flow.stats);
- }
- rule->installed = false;
-
- rule_post_uninstall(p, rule);
- }
-}
-
-static void
-rule_post_uninstall(struct ofproto *ofproto, struct rule *rule)
-{
- struct rule *super = rule->super;
-
- rule_account(ofproto, rule, 0);
- if (ofproto->netflow) {
- struct ofexpired expired;
- expired.flow = rule->cr.flow;
- expired.packet_count = rule->packet_count;
- expired.byte_count = rule->byte_count;
- expired.used = rule->used;
- expired.created = rule->created;
- expired.tcp_flags = rule->tcp_flags;
- expired.ip_tos = rule->ip_tos;
- netflow_expire(ofproto->netflow, &expired);
- }
- if (super) {
- super->packet_count += rule->packet_count;
- super->byte_count += rule->byte_count;
- super->tcp_flags |= rule->tcp_flags;
- if (rule->packet_count) {
- super->ip_tos = rule->ip_tos;
- }
- }
-
- /* Reset counters to prevent double counting if the rule ever gets
- * reinstalled. */
- rule->packet_count = 0;
- rule->byte_count = 0;
- rule->accounted_bytes = 0;
- rule->tcp_flags = 0;
- rule->ip_tos = 0;
-}
-\f
-static void
-queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn,
- struct rconn_packet_counter *counter)
-{
- update_openflow_length(msg);
- if (rconn_send(ofconn->rconn, msg, counter)) {
- ofpbuf_delete(msg);
- }
-}
-
-static void
-send_error(const struct ofconn *ofconn, const struct ofp_header *oh,
- int error, const void *data, size_t len)
-{
- struct ofpbuf *buf;
- struct ofp_error_msg *oem;
-
- if (!(error >> 16)) {
- VLOG_WARN_RL(&rl, "not sending bad error code %d to controller",
- error);
- return;
- }
-
- COVERAGE_INC(ofproto_error);
- oem = make_openflow_xid(len + sizeof *oem, OFPT_ERROR,
- oh ? oh->xid : 0, &buf);
- oem->type = htons((unsigned int) error >> 16);
- oem->code = htons(error & 0xffff);
- memcpy(oem->data, data, len);
- queue_tx(buf, ofconn, ofconn->reply_counter);
-}
-
-static void
-send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh,
- int error)
-{
- size_t oh_length = ntohs(oh->length);
- send_error(ofconn, oh, error, oh, MIN(oh_length, 64));
-}
-
-static void
-hton_ofp_phy_port(struct ofp_phy_port *opp)
-{
- opp->port_no = htons(opp->port_no);
- opp->config = htonl(opp->config);
- opp->state = htonl(opp->state);
- opp->curr = htonl(opp->curr);
- opp->advertised = htonl(opp->advertised);
- opp->supported = htonl(opp->supported);
- opp->peer = htonl(opp->peer);
-}
-
-static int
-handle_echo_request(struct ofconn *ofconn, struct ofp_header *oh)
-{
- struct ofp_header *rq = oh;
- queue_tx(make_echo_reply(rq), ofconn, ofconn->reply_counter);
- return 0;
-}
-
-static int
-handle_features_request(struct ofproto *p, struct ofconn *ofconn,
- struct ofp_header *oh)
-{
- struct ofp_switch_features *osf;
- struct ofpbuf *buf;
- unsigned int port_no;
- struct ofport *port;
-
- osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf);
- osf->datapath_id = htonll(p->datapath_id);
- osf->n_buffers = htonl(pktbuf_capacity());
- osf->n_tables = 2;
- osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS |
- OFPC_PORT_STATS | OFPC_MULTI_PHY_TX);
- osf->actions = htonl((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_TP_SRC) |
- (1u << OFPAT_SET_TP_DST));
-
- PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
- hton_ofp_phy_port(ofpbuf_put(buf, &port->opp, sizeof port->opp));
- }
-
- queue_tx(buf, ofconn, ofconn->reply_counter);
- return 0;
-}
-
-static int
-handle_get_config_request(struct ofproto *p, struct ofconn *ofconn,
- struct ofp_header *oh)
-{
- struct ofpbuf *buf;
- struct ofp_switch_config *osc;
- uint16_t flags;
- bool drop_frags;
-
- /* Figure out flags. */
- dpif_get_drop_frags(p->dpif, &drop_frags);
- flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL;
- if (ofconn->send_flow_exp) {
- flags |= OFPC_SEND_FLOW_EXP;
- }
-
- /* Send reply. */
- osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf);
- osc->flags = htons(flags);
- osc->miss_send_len = htons(ofconn->miss_send_len);
- queue_tx(buf, ofconn, ofconn->reply_counter);
-
- return 0;
-}
-
-static int
-handle_set_config(struct ofproto *p, struct ofconn *ofconn,
- struct ofp_switch_config *osc)
-{
- uint16_t flags;
- int error;
-
- error = check_ofp_message(&osc->header, OFPT_SET_CONFIG, sizeof *osc);
- if (error) {
- return error;
- }
- flags = ntohs(osc->flags);
-
- ofconn->send_flow_exp = (flags & OFPC_SEND_FLOW_EXP) != 0;
-
- if (ofconn == p->controller) {
- switch (flags & OFPC_FRAG_MASK) {
- case OFPC_FRAG_NORMAL:
- dpif_set_drop_frags(p->dpif, false);
- break;
- case OFPC_FRAG_DROP:
- dpif_set_drop_frags(p->dpif, true);
- break;
- default:
- VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")",
- osc->flags);
- break;
- }
- }
-
- if ((ntohs(osc->miss_send_len) != 0) != (ofconn->miss_send_len != 0)) {
- if (ntohs(osc->miss_send_len) != 0) {
- ofconn->pktbuf = pktbuf_create();
- } else {
- pktbuf_destroy(ofconn->pktbuf);
- }
- }
-
- ofconn->miss_send_len = ntohs(osc->miss_send_len);
-
- return 0;
-}
-
-static void
-add_output_group_action(struct odp_actions *actions, uint16_t group)
-{
- odp_actions_add(actions, ODPAT_OUTPUT_GROUP)->output_group.group = group;
-}
-
-static void
-add_controller_action(struct odp_actions *actions,
- const struct ofp_action_output *oao)
-{
- union odp_action *a = odp_actions_add(actions, ODPAT_CONTROLLER);
- a->controller.arg = oao->max_len ? ntohs(oao->max_len) : UINT32_MAX;
-}
-
-struct action_xlate_ctx {
- /* Input. */
- const flow_t *flow; /* Flow to which these actions correspond. */
- int recurse; /* Recursion level, via xlate_table_action. */
- struct ofproto *ofproto;
- const struct ofpbuf *packet; /* The packet corresponding to 'flow', or a
- * null pointer if we are revalidating
- * without a packet to refer to. */
-
- /* Output. */
- struct odp_actions *out; /* Datapath actions. */
- tag_type *tags; /* Tags associated with OFPP_NORMAL actions. */
- bool may_setup_flow; /* True ordinarily; false if the actions must
- * be reassessed for every packet. */
-};
-
-static void do_xlate_actions(const union ofp_action *in, size_t n_in,
- struct action_xlate_ctx *ctx);
-
-static void
-add_output_action(struct action_xlate_ctx *ctx, uint16_t port)
-{
- const struct ofport *ofport = port_array_get(&ctx->ofproto->ports, port);
- if (!ofport || !(ofport->opp.config & OFPPC_NO_FWD)) {
- odp_actions_add(ctx->out, ODPAT_OUTPUT)->output.port = port;
- }
-}
-
-static struct rule *
-lookup_valid_rule(struct ofproto *ofproto, const flow_t *flow)
-{
- struct rule *rule;
- rule = rule_from_cls_rule(classifier_lookup(&ofproto->cls, flow));
-
- /* The rule we found might not be valid, since we could be in need of
- * revalidation. If it is not valid, don't return it. */
- if (rule
- && rule->super
- && ofproto->need_revalidate
- && !revalidate_rule(ofproto, rule)) {
- COVERAGE_INC(ofproto_invalidated);
- return NULL;
- }
-
- return rule;
-}
-
-static void
-xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port)
-{
- if (!ctx->recurse) {
- struct rule *rule;
- flow_t flow;
-
- flow = *ctx->flow;
- flow.in_port = in_port;
-
- rule = lookup_valid_rule(ctx->ofproto, &flow);
- if (rule) {
- if (rule->super) {
- rule = rule->super;
- }
-
- ctx->recurse++;
- do_xlate_actions(rule->actions, rule->n_actions, ctx);
- ctx->recurse--;
- }
- }
-}
-
-static void
-xlate_output_action(struct action_xlate_ctx *ctx,
- const struct ofp_action_output *oao)
-{
- uint16_t odp_port;
-
- switch (ntohs(oao->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:
- if (!ctx->ofproto->ofhooks->normal_cb(ctx->flow, ctx->packet,
- ctx->out, ctx->tags,
- ctx->ofproto->aux)) {
- COVERAGE_INC(ofproto_uninstallable);
- ctx->may_setup_flow = false;
- }
- break;
- case OFPP_FLOOD:
- add_output_group_action(ctx->out, DP_GROUP_FLOOD);
- break;
- case OFPP_ALL:
- add_output_group_action(ctx->out, DP_GROUP_ALL);
- break;
- case OFPP_CONTROLLER:
- add_controller_action(ctx->out, oao);
- break;
- case OFPP_LOCAL:
- add_output_action(ctx, ODPP_LOCAL);
- break;
- default:
- odp_port = ofp_port_to_odp_port(ntohs(oao->port));
- if (odp_port != ctx->flow->in_port) {
- add_output_action(ctx, odp_port);
- }
- break;
- }
-}
-
-static void
-xlate_nicira_action(struct action_xlate_ctx *ctx,
- const struct nx_action_header *nah)
-{
- const struct nx_action_resubmit *nar;
- int subtype = ntohs(nah->subtype);
-
- assert(nah->vendor == htonl(NX_VENDOR_ID));
- switch (subtype) {
- case NXAST_RESUBMIT:
- nar = (const struct nx_action_resubmit *) nah;
- xlate_table_action(ctx, ofp_port_to_odp_port(ntohs(nar->in_port)));
- break;
-
- default:
- VLOG_DBG_RL(&rl, "unknown Nicira action type %"PRIu16, subtype);
- break;
- }
-}
-
-static void
-do_xlate_actions(const union ofp_action *in, size_t n_in,
- struct action_xlate_ctx *ctx)
-{
- struct actions_iterator iter;
- const union ofp_action *ia;
- const struct ofport *port;
-
- port = port_array_get(&ctx->ofproto->ports, ctx->flow->in_port);
- if (port && port->opp.config & (OFPPC_NO_RECV | OFPPC_NO_RECV_STP) &&
- port->opp.config & (eth_addr_equals(ctx->flow->dl_dst, stp_eth_addr)
- ? OFPPC_NO_RECV_STP : OFPPC_NO_RECV)) {
- /* Drop this flow. */
- return;
- }
-
- for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) {
- uint16_t type = ntohs(ia->type);
- union odp_action *oa;
-
- switch (type) {
- case OFPAT_OUTPUT:
- xlate_output_action(ctx, &ia->output);
- break;
-
- case OFPAT_SET_VLAN_VID:
- oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_VID);
- oa->vlan_vid.vlan_vid = ia->vlan_vid.vlan_vid;
- break;
-
- case OFPAT_SET_VLAN_PCP:
- oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_PCP);
- oa->vlan_pcp.vlan_pcp = ia->vlan_pcp.vlan_pcp;
- break;
-
- case OFPAT_STRIP_VLAN:
- odp_actions_add(ctx->out, ODPAT_STRIP_VLAN);
- break;
-
- case OFPAT_SET_DL_SRC:
- oa = odp_actions_add(ctx->out, ODPAT_SET_DL_SRC);
- memcpy(oa->dl_addr.dl_addr,
- ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
- break;
-
- case OFPAT_SET_DL_DST:
- oa = odp_actions_add(ctx->out, ODPAT_SET_DL_DST);
- memcpy(oa->dl_addr.dl_addr,
- ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
- break;
-
- case OFPAT_SET_NW_SRC:
- oa = odp_actions_add(ctx->out, ODPAT_SET_NW_SRC);
- oa->nw_addr.nw_addr = ia->nw_addr.nw_addr;
- break;
-
- case OFPAT_SET_TP_SRC:
- oa = odp_actions_add(ctx->out, ODPAT_SET_TP_SRC);
- oa->tp_port.tp_port = ia->tp_port.tp_port;
- break;
-
- case OFPAT_VENDOR:
- xlate_nicira_action(ctx, (const struct nx_action_header *) ia);
- break;
-
- default:
- VLOG_DBG_RL(&rl, "unknown action type %"PRIu16, type);
- break;
- }
- }
-}
-
-static int
-xlate_actions(const union ofp_action *in, size_t n_in,
- const flow_t *flow, struct ofproto *ofproto,
- const struct ofpbuf *packet,
- struct odp_actions *out, tag_type *tags, bool *may_setup_flow)
-{
- tag_type no_tags = 0;
- struct action_xlate_ctx ctx;
- COVERAGE_INC(ofproto_ofp2odp);
- odp_actions_init(out);
- ctx.flow = flow;
- ctx.recurse = 0;
- ctx.ofproto = ofproto;
- ctx.packet = packet;
- ctx.out = out;
- ctx.tags = tags ? tags : &no_tags;
- ctx.may_setup_flow = true;
- do_xlate_actions(in, n_in, &ctx);
- if (may_setup_flow) {
- *may_setup_flow = ctx.may_setup_flow;
- }
- if (odp_actions_overflow(out)) {
- odp_actions_init(out);
- return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_TOO_MANY);
- }
- return 0;
-}
-
-static int
-handle_packet_out(struct ofproto *p, struct ofconn *ofconn,
- struct ofp_header *oh)
-{
- struct ofp_packet_out *opo;
- struct ofpbuf payload, *buffer;
- struct odp_actions actions;
- int n_actions;
- uint16_t in_port;
- flow_t flow;
- int error;
-
- error = check_ofp_packet_out(oh, &payload, &n_actions, p->max_ports);
- if (error) {
- return error;
- }
- opo = (struct ofp_packet_out *) oh;
-
- COVERAGE_INC(ofproto_packet_out);
- if (opo->buffer_id != htonl(UINT32_MAX)) {
- error = pktbuf_retrieve(ofconn->pktbuf, ntohl(opo->buffer_id),
- &buffer, &in_port);
- if (error) {
- return error;
- }
- payload = *buffer;
- } else {
- buffer = NULL;
- }
-
- flow_extract(&payload, ofp_port_to_odp_port(ntohs(opo->in_port)), &flow);
- error = xlate_actions((const union ofp_action *) opo->actions, n_actions,
- &flow, p, &payload, &actions, NULL, NULL);
- if (error) {
- return error;
- }
-
- dpif_execute(p->dpif, flow.in_port, actions.actions, actions.n_actions,
- &payload);
- ofpbuf_delete(buffer);
-
- return 0;
-}
-
-static void
-update_port_config(struct ofproto *p, struct ofport *port,
- uint32_t config, uint32_t mask)
-{
- mask &= config ^ port->opp.config;
- if (mask & OFPPC_PORT_DOWN) {
- if (config & OFPPC_PORT_DOWN) {
- netdev_turn_flags_off(port->netdev, NETDEV_UP, true);
- } else {
- netdev_turn_flags_on(port->netdev, NETDEV_UP, true);
- }
- }
-#define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD)
- if (mask & REVALIDATE_BITS) {
- COVERAGE_INC(ofproto_costly_flags);
- port->opp.config ^= mask & REVALIDATE_BITS;
- p->need_revalidate = true;
- }
-#undef REVALIDATE_BITS
- if (mask & OFPPC_NO_FLOOD) {
- port->opp.config ^= OFPPC_NO_FLOOD;
- refresh_port_group(p, DP_GROUP_FLOOD);
- }
- if (mask & OFPPC_NO_PACKET_IN) {
- port->opp.config ^= OFPPC_NO_PACKET_IN;
- }
-}
-
-static int
-handle_port_mod(struct ofproto *p, struct ofp_header *oh)
-{
- const struct ofp_port_mod *opm;
- struct ofport *port;
- int error;
-
- error = check_ofp_message(oh, OFPT_PORT_MOD, sizeof *opm);
- if (error) {
- return error;
- }
- opm = (struct ofp_port_mod *) oh;
-
- port = port_array_get(&p->ports,
- ofp_port_to_odp_port(ntohs(opm->port_no)));
- if (!port) {
- return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT);
- } else if (memcmp(port->opp.hw_addr, opm->hw_addr, OFP_ETH_ALEN)) {
- return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR);
- } else {
- update_port_config(p, port, ntohl(opm->config), ntohl(opm->mask));
- if (opm->advertise) {
- netdev_set_advertisements(port->netdev, ntohl(opm->advertise));
- }
- }
- return 0;
-}
-
-static struct ofpbuf *
-make_stats_reply(uint32_t xid, uint16_t type, size_t body_len)
-{
- struct ofp_stats_reply *osr;
- struct ofpbuf *msg;
-
- msg = ofpbuf_new(MIN(sizeof *osr + body_len, UINT16_MAX));
- osr = put_openflow_xid(sizeof *osr, OFPT_STATS_REPLY, xid, msg);
- osr->type = type;
- osr->flags = htons(0);
- return msg;
-}
-
-static struct ofpbuf *
-start_stats_reply(const struct ofp_stats_request *request, size_t body_len)
-{
- return make_stats_reply(request->header.xid, request->type, body_len);
-}
-
-static void *
-append_stats_reply(size_t nbytes, struct ofconn *ofconn, struct ofpbuf **msgp)
-{
- struct ofpbuf *msg = *msgp;
- assert(nbytes <= UINT16_MAX - sizeof(struct ofp_stats_reply));
- if (nbytes + msg->size > UINT16_MAX) {
- struct ofp_stats_reply *reply = msg->data;
- reply->flags = htons(OFPSF_REPLY_MORE);
- *msgp = make_stats_reply(reply->header.xid, reply->type, nbytes);
- queue_tx(msg, ofconn, ofconn->reply_counter);
- }
- return ofpbuf_put_uninit(*msgp, nbytes);
-}
-
-static int
-handle_desc_stats_request(struct ofproto *p, struct ofconn *ofconn,
- struct ofp_stats_request *request)
-{
- struct ofp_desc_stats *ods;
- struct ofpbuf *msg;
-
- msg = start_stats_reply(request, sizeof *ods);
- ods = append_stats_reply(sizeof *ods, ofconn, &msg);
- strncpy(ods->mfr_desc, p->manufacturer, sizeof ods->mfr_desc);
- strncpy(ods->hw_desc, p->hardware, sizeof ods->hw_desc);
- strncpy(ods->sw_desc, p->software, sizeof ods->sw_desc);
- strncpy(ods->serial_num, p->serial, sizeof ods->serial_num);
- queue_tx(msg, ofconn, ofconn->reply_counter);
-
- return 0;
-}
-
-static void
-count_subrules(struct cls_rule *cls_rule, void *n_subrules_)
-{
- struct rule *rule = rule_from_cls_rule(cls_rule);
- int *n_subrules = n_subrules_;
-
- if (rule->super) {
- (*n_subrules)++;
- }
-}
-
-static int
-handle_table_stats_request(struct ofproto *p, struct ofconn *ofconn,
- struct ofp_stats_request *request)
-{
- struct ofp_table_stats *ots;
- struct ofpbuf *msg;
- struct odp_stats dpstats;
- int n_exact, n_subrules, n_wild;
-
- msg = start_stats_reply(request, sizeof *ots * 2);
-
- /* Count rules of various kinds. */
- n_subrules = 0;
- classifier_for_each(&p->cls, CLS_INC_EXACT, count_subrules, &n_subrules);
- n_exact = classifier_count_exact(&p->cls) - n_subrules;
- n_wild = classifier_count(&p->cls) - classifier_count_exact(&p->cls);
-
- /* Hash table. */
- dpif_get_dp_stats(p->dpif, &dpstats);
- ots = append_stats_reply(sizeof *ots, ofconn, &msg);
- memset(ots, 0, sizeof *ots);
- ots->table_id = TABLEID_HASH;
- strcpy(ots->name, "hash");
- ots->wildcards = htonl(0);
- ots->max_entries = htonl(dpstats.max_capacity);
- ots->active_count = htonl(n_exact);
- ots->lookup_count = htonll(dpstats.n_frags + dpstats.n_hit +
- dpstats.n_missed);
- ots->matched_count = htonll(dpstats.n_hit); /* XXX */
-
- /* Classifier table. */
- ots = append_stats_reply(sizeof *ots, ofconn, &msg);
- memset(ots, 0, sizeof *ots);
- ots->table_id = TABLEID_CLASSIFIER;
- strcpy(ots->name, "classifier");
- ots->wildcards = htonl(OFPFW_ALL);
- ots->max_entries = htonl(65536);
- ots->active_count = htonl(n_wild);
- ots->lookup_count = htonll(0); /* XXX */
- ots->matched_count = htonll(0); /* XXX */
-
- queue_tx(msg, ofconn, ofconn->reply_counter);
- return 0;
-}
-
-static int
-handle_port_stats_request(struct ofproto *p, struct ofconn *ofconn,
- struct ofp_stats_request *request)
-{
- struct ofp_port_stats *ops;
- struct ofpbuf *msg;
- struct ofport *port;
- unsigned int port_no;
-
- msg = start_stats_reply(request, sizeof *ops * 16);
- PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
- struct netdev_stats stats;
-
- /* Intentionally ignore return value, since errors will set 'stats' to
- * all-1s, which is correct for OpenFlow, and netdev_get_stats() will
- * log errors. */
- netdev_get_stats(port->netdev, &stats);
-
- ops = append_stats_reply(sizeof *ops, ofconn, &msg);
- ops->port_no = htons(odp_port_to_ofp_port(port_no));
- memset(ops->pad, 0, sizeof ops->pad);
- ops->rx_packets = htonll(stats.rx_packets);
- ops->tx_packets = htonll(stats.tx_packets);
- ops->rx_bytes = htonll(stats.rx_bytes);
- ops->tx_bytes = htonll(stats.tx_bytes);
- ops->rx_dropped = htonll(stats.rx_dropped);
- ops->tx_dropped = htonll(stats.tx_dropped);
- ops->rx_errors = htonll(stats.rx_errors);
- ops->tx_errors = htonll(stats.tx_errors);
- ops->rx_frame_err = htonll(stats.rx_frame_errors);
- ops->rx_over_err = htonll(stats.rx_over_errors);
- ops->rx_crc_err = htonll(stats.rx_crc_errors);
- ops->collisions = htonll(stats.collisions);
- }
-
- queue_tx(msg, ofconn, ofconn->reply_counter);
- return 0;
-}
-
-struct flow_stats_cbdata {
- struct ofproto *ofproto;
- struct ofconn *ofconn;
- uint16_t out_port;
- struct ofpbuf *msg;
-};
-
-static void
-query_stats(struct ofproto *p, struct rule *rule,
- uint64_t *packet_countp, uint64_t *byte_countp)
-{
- uint64_t packet_count, byte_count;
- struct rule *subrule;
- struct odp_flow *odp_flows;
- size_t n_odp_flows;
-
- n_odp_flows = rule->cr.wc.wildcards ? list_size(&rule->list) : 1;
- odp_flows = xcalloc(1, n_odp_flows * sizeof *odp_flows);
- if (rule->cr.wc.wildcards) {
- size_t i = 0;
- LIST_FOR_EACH (subrule, struct rule, list, &rule->list) {
- odp_flows[i++].key = subrule->cr.flow;
- }
- } else {
- odp_flows[0].key = rule->cr.flow;
- }
-
- packet_count = rule->packet_count;
- byte_count = rule->byte_count;
- if (!dpif_flow_get_multiple(p->dpif, odp_flows, n_odp_flows)) {
- size_t i;
- for (i = 0; i < n_odp_flows; i++) {
- struct odp_flow *odp_flow = &odp_flows[i];
- packet_count += odp_flow->stats.n_packets;
- byte_count += odp_flow->stats.n_bytes;
- }
- }
- free(odp_flows);
-
- *packet_countp = packet_count;
- *byte_countp = byte_count;
-}
-
-static void
-flow_stats_cb(struct cls_rule *rule_, void *cbdata_)
-{
- struct rule *rule = rule_from_cls_rule(rule_);
- struct flow_stats_cbdata *cbdata = cbdata_;
- struct ofp_flow_stats *ofs;
- uint64_t packet_count, byte_count;
- size_t act_len, len;
-
- if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) {
- return;
- }
-
- act_len = sizeof *rule->actions * rule->n_actions;
- len = offsetof(struct ofp_flow_stats, actions) + act_len;
-
- query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
-
- ofs = append_stats_reply(len, cbdata->ofconn, &cbdata->msg);
- ofs->length = htons(len);
- ofs->table_id = rule->cr.wc.wildcards ? TABLEID_CLASSIFIER : TABLEID_HASH;
- ofs->pad = 0;
- flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, &ofs->match);
- ofs->duration = htonl((time_msec() - rule->created) / 1000);
- ofs->priority = htons(rule->cr.priority);
- ofs->idle_timeout = htons(rule->idle_timeout);
- ofs->hard_timeout = htons(rule->hard_timeout);
- memset(ofs->pad2, 0, sizeof ofs->pad2);
- ofs->packet_count = htonll(packet_count);
- ofs->byte_count = htonll(byte_count);
- memcpy(ofs->actions, rule->actions, act_len);
-}
-
-static int
-table_id_to_include(uint8_t table_id)
-{
- return (table_id == TABLEID_HASH ? CLS_INC_EXACT
- : table_id == TABLEID_CLASSIFIER ? CLS_INC_WILD
- : table_id == 0xff ? CLS_INC_ALL
- : 0);
-}
-
-static int
-handle_flow_stats_request(struct ofproto *p, struct ofconn *ofconn,
- const struct ofp_stats_request *osr,
- size_t arg_size)
-{
- struct ofp_flow_stats_request *fsr;
- struct flow_stats_cbdata cbdata;
- struct cls_rule target;
-
- if (arg_size != sizeof *fsr) {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
- }
- fsr = (struct ofp_flow_stats_request *) osr->body;
-
- COVERAGE_INC(ofproto_flows_req);
- cbdata.ofproto = p;
- cbdata.ofconn = ofconn;
- cbdata.out_port = fsr->out_port;
- cbdata.msg = start_stats_reply(osr, 1024);
- cls_rule_from_match(&target, &fsr->match, 0);
- classifier_for_each_match(&p->cls, &target,
- table_id_to_include(fsr->table_id),
- flow_stats_cb, &cbdata);
- queue_tx(cbdata.msg, ofconn, ofconn->reply_counter);
- return 0;
-}
-
-struct aggregate_stats_cbdata {
- struct ofproto *ofproto;
- uint16_t out_port;
- uint64_t packet_count;
- uint64_t byte_count;
- uint32_t n_flows;
-};
-
-static void
-aggregate_stats_cb(struct cls_rule *rule_, void *cbdata_)
-{
- struct rule *rule = rule_from_cls_rule(rule_);
- struct aggregate_stats_cbdata *cbdata = cbdata_;
- uint64_t packet_count, byte_count;
-
- if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) {
- return;
- }
-
- query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
-
- cbdata->packet_count += packet_count;
- cbdata->byte_count += byte_count;
- cbdata->n_flows++;
-}
-
-static int
-handle_aggregate_stats_request(struct ofproto *p, struct ofconn *ofconn,
- const struct ofp_stats_request *osr,
- size_t arg_size)
-{
- struct ofp_aggregate_stats_request *asr;
- struct ofp_aggregate_stats_reply *reply;
- struct aggregate_stats_cbdata cbdata;
- struct cls_rule target;
- struct ofpbuf *msg;
-
- if (arg_size != sizeof *asr) {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
- }
- asr = (struct ofp_aggregate_stats_request *) osr->body;
-
- COVERAGE_INC(ofproto_agg_request);
- cbdata.ofproto = p;
- cbdata.out_port = asr->out_port;
- cbdata.packet_count = 0;
- cbdata.byte_count = 0;
- cbdata.n_flows = 0;
- cls_rule_from_match(&target, &asr->match, 0);
- classifier_for_each_match(&p->cls, &target,
- table_id_to_include(asr->table_id),
- aggregate_stats_cb, &cbdata);
-
- msg = start_stats_reply(osr, sizeof *reply);
- reply = append_stats_reply(sizeof *reply, ofconn, &msg);
- reply->flow_count = htonl(cbdata.n_flows);
- reply->packet_count = htonll(cbdata.packet_count);
- reply->byte_count = htonll(cbdata.byte_count);
- queue_tx(msg, ofconn, ofconn->reply_counter);
- return 0;
-}
-
-static int
-handle_stats_request(struct ofproto *p, struct ofconn *ofconn,
- struct ofp_header *oh)
-{
- struct ofp_stats_request *osr;
- size_t arg_size;
- int error;
-
- error = check_ofp_message_array(oh, OFPT_STATS_REQUEST, sizeof *osr,
- 1, &arg_size);
- if (error) {
- return error;
- }
- osr = (struct ofp_stats_request *) oh;
-
- switch (ntohs(osr->type)) {
- case OFPST_DESC:
- return handle_desc_stats_request(p, ofconn, osr);
-
- case OFPST_FLOW:
- return handle_flow_stats_request(p, ofconn, osr, arg_size);
-
- case OFPST_AGGREGATE:
- return handle_aggregate_stats_request(p, ofconn, osr, arg_size);
-
- case OFPST_TABLE:
- return handle_table_stats_request(p, ofconn, osr);
-
- case OFPST_PORT:
- return handle_port_stats_request(p, ofconn, osr);
-
- case OFPST_VENDOR:
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
-
- default:
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT);
- }
-}
-
-static long long int
-msec_from_nsec(uint64_t sec, uint32_t nsec)
-{
- return !sec ? 0 : sec * 1000 + nsec / 1000000;
-}
-
-static void
-update_time(struct rule *rule, const struct odp_flow_stats *stats)
-{
- long long int used = msec_from_nsec(stats->used_sec, stats->used_nsec);
- if (used > rule->used) {
- rule->used = used;
- }
-}
-
-static void
-update_stats(struct rule *rule, const struct odp_flow_stats *stats)
-{
- update_time(rule, stats);
- rule->packet_count += stats->n_packets;
- rule->byte_count += stats->n_bytes;
- rule->tcp_flags |= stats->tcp_flags;
- if (stats->n_packets) {
- rule->ip_tos = stats->ip_tos;
- }
-}
-
-static int
-add_flow(struct ofproto *p, struct ofconn *ofconn,
- struct ofp_flow_mod *ofm, size_t n_actions)
-{
- struct ofpbuf *packet;
- struct rule *rule;
- uint16_t in_port;
- int error;
-
- rule = rule_create(NULL, (const union ofp_action *) ofm->actions,
- n_actions, ntohs(ofm->idle_timeout),
- ntohs(ofm->hard_timeout));
- cls_rule_from_match(&rule->cr, &ofm->match, ntohs(ofm->priority));
-
- packet = NULL;
- error = 0;
- if (ofm->buffer_id != htonl(UINT32_MAX)) {
- error = pktbuf_retrieve(ofconn->pktbuf, ntohl(ofm->buffer_id),
- &packet, &in_port);
- }
-
- rule_insert(p, rule, packet, in_port);
- ofpbuf_delete(packet);
- return error;
-}
-
-static int
-modify_flow(struct ofproto *p, const struct ofp_flow_mod *ofm,
- size_t n_actions, uint16_t command, struct rule *rule)
-{
- if (rule_is_hidden(rule)) {
- return 0;
- }
-
- if (command == OFPFC_DELETE) {
- rule_remove(p, rule);
- } else {
- size_t actions_len = n_actions * sizeof *rule->actions;
-
- if (n_actions == rule->n_actions
- && !memcmp(ofm->actions, rule->actions, actions_len))
- {
- return 0;
- }
-
- free(rule->actions);
- rule->actions = xmemdup(ofm->actions, actions_len);
- rule->n_actions = n_actions;
-
- if (rule->cr.wc.wildcards) {
- COVERAGE_INC(ofproto_mod_wc_flow);
- p->need_revalidate = true;
- } else {
- rule_update_actions(p, rule);
- }
- }
-
- return 0;
-}
-
-static int
-modify_flows_strict(struct ofproto *p, const struct ofp_flow_mod *ofm,
- size_t n_actions, uint16_t command)
-{
- struct rule *rule;
- uint32_t wildcards;
- flow_t flow;
-
- flow_from_match(&flow, &wildcards, &ofm->match);
- rule = rule_from_cls_rule(classifier_find_rule_exactly(
- &p->cls, &flow, wildcards,
- ntohs(ofm->priority)));
-
- if (rule) {
- if (command == OFPFC_DELETE
- && ofm->out_port != htons(OFPP_NONE)
- && !rule_has_out_port(rule, ofm->out_port)) {
- return 0;
- }
-
- modify_flow(p, ofm, n_actions, command, rule);
- }
- return 0;
-}
-
-struct modify_flows_cbdata {
- struct ofproto *ofproto;
- const struct ofp_flow_mod *ofm;
- uint16_t out_port;
- size_t n_actions;
- uint16_t command;
-};
-
-static void
-modify_flows_cb(struct cls_rule *rule_, void *cbdata_)
-{
- struct rule *rule = rule_from_cls_rule(rule_);
- struct modify_flows_cbdata *cbdata = cbdata_;
-
- if (cbdata->out_port != htons(OFPP_NONE)
- && !rule_has_out_port(rule, cbdata->out_port)) {
- return;
- }
-
- modify_flow(cbdata->ofproto, cbdata->ofm, cbdata->n_actions,
- cbdata->command, rule);
-}
-
-static int
-modify_flows_loose(struct ofproto *p, const struct ofp_flow_mod *ofm,
- size_t n_actions, uint16_t command)
-{
- struct modify_flows_cbdata cbdata;
- struct cls_rule target;
-
- cbdata.ofproto = p;
- cbdata.ofm = ofm;
- cbdata.out_port = (command == OFPFC_DELETE ? ofm->out_port
- : htons(OFPP_NONE));
- cbdata.n_actions = n_actions;
- cbdata.command = command;
-
- cls_rule_from_match(&target, &ofm->match, 0);
-
- classifier_for_each_match(&p->cls, &target, CLS_INC_ALL,
- modify_flows_cb, &cbdata);
- return 0;
-}
-
-static int
-handle_flow_mod(struct ofproto *p, struct ofconn *ofconn,
- struct ofp_flow_mod *ofm)
-{
- size_t n_actions;
- int error;
-
- error = check_ofp_message_array(&ofm->header, OFPT_FLOW_MOD, sizeof *ofm,
- sizeof *ofm->actions, &n_actions);
- if (error) {
- return error;
- }
-
- normalize_match(&ofm->match);
- if (!ofm->match.wildcards) {
- ofm->priority = htons(UINT16_MAX);
- }
-
- error = validate_actions((const union ofp_action *) ofm->actions,
- n_actions, p->max_ports);
- if (error) {
- return error;
- }
-
- switch (ntohs(ofm->command)) {
- case OFPFC_ADD:
- return add_flow(p, ofconn, ofm, n_actions);
-
- case OFPFC_MODIFY:
- return modify_flows_loose(p, ofm, n_actions, OFPFC_MODIFY);
-
- case OFPFC_MODIFY_STRICT:
- return modify_flows_strict(p, ofm, n_actions, OFPFC_MODIFY);
-
- case OFPFC_DELETE:
- return modify_flows_loose(p, ofm, n_actions, OFPFC_DELETE);
-
- case OFPFC_DELETE_STRICT:
- return modify_flows_strict(p, ofm, n_actions, OFPFC_DELETE);
-
- default:
- return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND);
- }
-}
-
-static void
-send_capability_reply(struct ofproto *p, struct ofconn *ofconn, uint32_t xid)
-{
- struct ofmp_capability_reply *ocr;
- struct ofpbuf *b;
- char capabilities[] = "com.nicira.mgmt.manager=false\n";
-
- ocr = make_openflow_xid(sizeof(*ocr), OFPT_VENDOR, xid, &b);
- ocr->header.header.vendor = htonl(NX_VENDOR_ID);
- ocr->header.header.subtype = htonl(NXT_MGMT);
- ocr->header.type = htons(OFMPT_CAPABILITY_REPLY);
-
- ocr->format = htonl(OFMPCOF_SIMPLE);
- ocr->mgmt_id = htonll(p->mgmt_id);
-
- ofpbuf_put(b, capabilities, strlen(capabilities));
-
- queue_tx(b, ofconn, ofconn->reply_counter);
-}
-
-static int
-handle_ofmp(struct ofproto *p, struct ofconn *ofconn,
- struct ofmp_header *ofmph)
-{
- size_t msg_len = ntohs(ofmph->header.header.length);
- if (msg_len < sizeof(*ofmph)) {
- VLOG_WARN_RL(&rl, "dropping short managment message: %d\n", msg_len);
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
- }
-
- if (ofmph->type == htons(OFMPT_CAPABILITY_REQUEST)) {
- struct ofmp_capability_request *ofmpcr;
-
- if (msg_len < sizeof(struct ofmp_capability_request)) {
- VLOG_WARN_RL(&rl, "dropping short capability request: %d\n",
- msg_len);
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
- }
-
- ofmpcr = (struct ofmp_capability_request *)ofmph;
- if (ofmpcr->format != htonl(OFMPCAF_SIMPLE)) {
- /* xxx Find a better type than bad subtype */
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
- }
-
- send_capability_reply(p, ofconn, ofmph->header.header.xid);
- return 0;
- } else {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
- }
-}
-
-static int
-handle_vendor(struct ofproto *p, struct ofconn *ofconn, void *msg)
-{
- struct ofp_vendor_header *ovh = msg;
- struct nicira_header *nh;
-
- if (ntohs(ovh->header.length) < sizeof(struct ofp_vendor_header)) {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
- }
- if (ovh->vendor != htonl(NX_VENDOR_ID)) {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
- }
- if (ntohs(ovh->header.length) < sizeof(struct nicira_header)) {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
- }
-
- nh = msg;
- switch (ntohl(nh->subtype)) {
- case NXT_STATUS_REQUEST:
- return switch_status_handle_request(p->switch_status, ofconn->rconn,
- msg);
-
- case NXT_ACT_SET_CONFIG:
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE); /* XXX */
-
- case NXT_ACT_GET_CONFIG:
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE); /* XXX */
-
- case NXT_COMMAND_REQUEST:
- if (p->executer) {
- return executer_handle_request(p->executer, ofconn->rconn, msg);
- }
- break;
-
- case NXT_MGMT:
- return handle_ofmp(p, ofconn, msg);
- }
-
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
-}
-
-static void
-handle_openflow(struct ofconn *ofconn, struct ofproto *p,
- struct ofpbuf *ofp_msg)
-{
- struct ofp_header *oh = ofp_msg->data;
- int error;
-
- COVERAGE_INC(ofproto_recv_openflow);
- switch (oh->type) {
- case OFPT_ECHO_REQUEST:
- error = handle_echo_request(ofconn, oh);
- break;
-
- case OFPT_ECHO_REPLY:
- error = 0;
- break;
-
- case OFPT_FEATURES_REQUEST:
- error = handle_features_request(p, ofconn, oh);
- break;
-
- case OFPT_GET_CONFIG_REQUEST:
- error = handle_get_config_request(p, ofconn, oh);
- break;
-
- case OFPT_SET_CONFIG:
- error = handle_set_config(p, ofconn, ofp_msg->data);
- break;
-
- case OFPT_PACKET_OUT:
- error = handle_packet_out(p, ofconn, ofp_msg->data);
- break;
-
- case OFPT_PORT_MOD:
- error = handle_port_mod(p, oh);
- break;
-
- case OFPT_FLOW_MOD:
- error = handle_flow_mod(p, ofconn, ofp_msg->data);
- break;
-
- case OFPT_STATS_REQUEST:
- error = handle_stats_request(p, ofconn, oh);
- break;
-
- case OFPT_VENDOR:
- error = handle_vendor(p, ofconn, ofp_msg->data);
- break;
-
- default:
- if (VLOG_IS_WARN_ENABLED()) {
- char *s = ofp_to_string(oh, ntohs(oh->length), 2);
- VLOG_DBG_RL(&rl, "OpenFlow message ignored: %s", s);
- free(s);
- }
- error = ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE);
- break;
- }
-
- if (error) {
- send_error_oh(ofconn, ofp_msg->data, error);
- }
-}
-\f
-static void
-handle_odp_msg(struct ofproto *p, struct ofpbuf *packet)
-{
- struct odp_msg *msg = packet->data;
- uint16_t in_port = odp_port_to_ofp_port(msg->port);
- struct rule *rule;
- struct ofpbuf payload;
- flow_t flow;
-
- /* Handle controller actions. */
- if (msg->type == _ODPL_ACTION_NR) {
- COVERAGE_INC(ofproto_ctlr_action);
- pinsched_send(p->action_sched, in_port, packet,
- send_packet_in_action, p);
- return;
- }
-
- payload.data = msg + 1;
- payload.size = msg->length - sizeof *msg;
- flow_extract(&payload, msg->port, &flow);
-
- rule = lookup_valid_rule(p, &flow);
- if (!rule) {
- /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
- struct ofport *port = port_array_get(&p->ports, msg->port);
- if (port) {
- if (port->opp.config & OFPPC_NO_PACKET_IN) {
- COVERAGE_INC(ofproto_no_packet_in);
- /* XXX install 'drop' flow entry */
- ofpbuf_delete(packet);
- return;
- }
- } else {
- VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, msg->port);
- }
-
- COVERAGE_INC(ofproto_packet_in);
- pinsched_send(p->miss_sched, in_port, packet, send_packet_in_miss, p);
- return;
- }
-
- if (rule->cr.wc.wildcards) {
- rule = rule_create_subrule(p, rule, &flow);
- rule_make_actions(p, rule, packet);
- } else {
- if (!rule->may_install) {
- /* The rule is not installable, that is, we need to process every
- * packet, so process the current packet and set its actions into
- * 'subrule'. */
- rule_make_actions(p, rule, packet);
- } else {
- /* XXX revalidate rule if it needs it */
- }
- }
-
- rule_execute(p, rule, &payload, &flow);
- rule_reinstall(p, rule);
- ofpbuf_delete(packet);
-}
-\f
-static void
-revalidate_cb(struct cls_rule *sub_, void *cbdata_)
-{
- struct rule *sub = rule_from_cls_rule(sub_);
- struct revalidate_cbdata *cbdata = cbdata_;
-
- if (cbdata->revalidate_all
- || (cbdata->revalidate_subrules && sub->super)
- || (tag_set_intersects(&cbdata->revalidate_set, sub->tags))) {
- revalidate_rule(cbdata->ofproto, sub);
- }
-}
-
-static bool
-revalidate_rule(struct ofproto *p, struct rule *rule)
-{
- const flow_t *flow = &rule->cr.flow;
-
- COVERAGE_INC(ofproto_revalidate_rule);
- if (rule->super) {
- struct rule *super;
- super = rule_from_cls_rule(classifier_lookup_wild(&p->cls, flow));
- if (!super) {
- rule_remove(p, rule);
- return false;
- } else if (super != rule->super) {
- COVERAGE_INC(ofproto_revalidate_moved);
- list_remove(&rule->list);
- list_push_back(&super->list, &rule->list);
- rule->super = super;
- rule->hard_timeout = super->hard_timeout;
- rule->idle_timeout = super->idle_timeout;
- rule->created = super->created;
- rule->used = 0;
- }
- }
-
- rule_update_actions(p, rule);
- return true;
-}
-
-static struct ofpbuf *
-compose_flow_exp(const struct rule *rule, long long int now, uint8_t reason)
-{
- struct ofp_flow_expired *ofe;
- struct ofpbuf *buf;
-
- ofe = make_openflow(sizeof *ofe, OFPT_FLOW_EXPIRED, &buf);
- flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, &ofe->match);
- ofe->priority = htons(rule->cr.priority);
- ofe->reason = reason;
- ofe->duration = (now - rule->created) / 1000;
- ofe->packet_count = rule->packet_count;
- ofe->byte_count = rule->byte_count;
-
- return buf;
-}
-
-static void
-send_flow_exp(struct ofproto *p, struct rule *rule,
- long long int now, uint8_t reason)
-{
- struct ofconn *ofconn;
- struct ofconn *prev;
- struct ofpbuf *buf;
-
- /* We limit the maximum number of queued flow expirations it by accounting
- * them under the counter for replies. That works because preventing
- * OpenFlow requests from being processed also prevents new flows from
- * being added (and expiring). (It also prevents processing OpenFlow
- * requests that would not add new flows, so it is imperfect.) */
-
- prev = NULL;
- LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
- if (ofconn->send_flow_exp && rconn_is_connected(ofconn->rconn)) {
- if (prev) {
- queue_tx(ofpbuf_clone(buf), prev, ofconn->reply_counter);
- } else {
- buf = compose_flow_exp(rule, now, reason);
- }
- prev = ofconn;
- }
- }
- if (prev) {
- queue_tx(buf, prev, ofconn->reply_counter);
- }
-}
-
-static void
-uninstall_idle_flow(struct ofproto *ofproto, struct rule *rule)
-{
- assert(rule->installed);
- assert(!rule->cr.wc.wildcards);
-
- if (rule->super) {
- rule_remove(ofproto, rule);
- } else {
- rule_uninstall(ofproto, rule);
- }
-}
-
-static void
-expire_rule(struct cls_rule *cls_rule, void *p_)
-{
- struct ofproto *p = p_;
- struct rule *rule = rule_from_cls_rule(cls_rule);
- long long int hard_expire, idle_expire, expire, now;
-
- hard_expire = (rule->hard_timeout
- ? rule->created + rule->hard_timeout * 1000
- : LLONG_MAX);
- idle_expire = (rule->idle_timeout
- && (rule->super || list_is_empty(&rule->list))
- ? rule->used + rule->idle_timeout * 1000
- : LLONG_MAX);
- expire = MIN(hard_expire, idle_expire);
- if (expire == LLONG_MAX) {
- if (rule->installed && time_msec() >= rule->used + 5000) {
- uninstall_idle_flow(p, rule);
- }
- return;
- }
-
- now = time_msec();
- if (now < expire) {
- if (rule->installed && now >= rule->used + 5000) {
- uninstall_idle_flow(p, rule);
- }
- return;
- }
-
- COVERAGE_INC(ofproto_expired);
- if (rule->cr.wc.wildcards) {
- /* Update stats. (This code will be a no-op if the rule expired
- * due to an idle timeout, because in that case the rule has no
- * subrules left.) */
- struct rule *subrule, *next;
- LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) {
- rule_remove(p, subrule);
- }
- }
-
- send_flow_exp(p, rule, now,
- (now >= hard_expire
- ? OFPER_HARD_TIMEOUT : OFPER_IDLE_TIMEOUT));
- rule_remove(p, rule);
-}
-
-static void
-update_used(struct ofproto *p)
-{
- struct odp_flow *flows;
- size_t n_flows;
- size_t i;
- int error;
-
- error = dpif_flow_list_all(p->dpif, &flows, &n_flows);
- if (error) {
- return;
- }
-
- for (i = 0; i < n_flows; i++) {
- struct odp_flow *f = &flows[i];
- struct rule *rule;
-
- rule = rule_from_cls_rule(
- classifier_find_rule_exactly(&p->cls, &f->key, 0, UINT16_MAX));
- if (!rule || !rule->installed) {
- COVERAGE_INC(ofproto_unexpected_rule);
- dpif_flow_del(p->dpif, f);
- continue;
- }
-
- update_time(rule, &f->stats);
- rule_account(p, rule, f->stats.n_bytes);
- }
- free(flows);
-}
-
-static void
-do_send_packet_in(struct ofconn *ofconn, uint32_t buffer_id,
- const struct ofpbuf *packet, int send_len)
-{
- struct ofp_packet_in *opi;
- struct ofpbuf payload, *buf;
- struct odp_msg *msg;
-
- msg = packet->data;
- payload.data = msg + 1;
- payload.size = msg->length - sizeof *msg;
-
- send_len = MIN(send_len, payload.size);
- buf = ofpbuf_new(sizeof *opi + send_len);
- opi = put_openflow_xid(offsetof(struct ofp_packet_in, data),
- OFPT_PACKET_IN, 0, buf);
- opi->buffer_id = htonl(buffer_id);
- opi->total_len = htons(payload.size);
- opi->in_port = htons(odp_port_to_ofp_port(msg->port));
- opi->reason = msg->type == _ODPL_ACTION_NR ? OFPR_ACTION : OFPR_NO_MATCH;
- ofpbuf_put(buf, payload.data, MIN(send_len, payload.size));
- update_openflow_length(buf);
- rconn_send_with_limit(ofconn->rconn, buf, ofconn->packet_in_counter, 100);
-}
-
-static void
-send_packet_in_action(struct ofpbuf *packet, void *p_)
-{
- struct ofproto *p = p_;
- struct ofconn *ofconn;
- struct odp_msg *msg;
-
- msg = packet->data;
- LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
- if (ofconn == p->controller || ofconn->miss_send_len) {
- do_send_packet_in(ofconn, UINT32_MAX, packet, msg->arg);
- }
- }
- ofpbuf_delete(packet);
-}
-
-static void
-send_packet_in_miss(struct ofpbuf *packet, void *p_)
-{
- struct ofproto *p = p_;
- struct ofconn *ofconn;
- struct ofpbuf payload;
- struct odp_msg *msg;
-
- msg = packet->data;
- payload.data = msg + 1;
- payload.size = msg->length - sizeof *msg;
- LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
- if (ofconn->miss_send_len) {
- uint32_t buffer_id = pktbuf_save(ofconn->pktbuf, &payload,
- msg->port);
- int send_len = (buffer_id != UINT32_MAX ? ofconn->miss_send_len
- : UINT32_MAX);
- do_send_packet_in(ofconn, buffer_id, packet, send_len);
- }
- }
- ofpbuf_delete(packet);
-}
-
-static uint64_t
-pick_datapath_id(struct dpif *dpif, uint64_t fallback_dpid)
-{
- char local_name[IF_NAMESIZE];
- uint8_t ea[ETH_ADDR_LEN];
- int error;
-
- error = dpif_port_get_name(dpif, ODPP_LOCAL,
- local_name, sizeof local_name);
- if (!error) {
- error = netdev_nodev_get_etheraddr(local_name, ea);
- if (!error) {
- return eth_addr_to_uint64(ea);
- }
- VLOG_WARN("could not get MAC address for %s (%s)",
- local_name, strerror(error));
- }
-
- return fallback_dpid;
-}
-
-static uint64_t
-pick_fallback_dpid(void)
-{
- uint8_t ea[ETH_ADDR_LEN];
- eth_addr_random(ea);
- ea[0] = 0x00; /* Set Nicira OUI. */
- ea[1] = 0x23;
- ea[2] = 0x20;
- return eth_addr_to_uint64(ea);
-}
-\f
-static bool
-default_normal_ofhook_cb(const flow_t *flow, const struct ofpbuf *packet,
- struct odp_actions *actions, tag_type *tags,
- void *ofproto_)
-{
- struct ofproto *ofproto = ofproto_;
- int out_port;
-
- /* Drop frames for reserved multicast addresses. */
- if (eth_addr_is_reserved(flow->dl_dst)) {
- return true;
- }
-
- /* Learn source MAC (but don't try to learn from revalidation). */
- if (packet != NULL) {
- tag_type rev_tag = mac_learning_learn(ofproto->ml, flow->dl_src,
- 0, flow->in_port);
- if (rev_tag) {
- /* 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, "learned that "ETH_ADDR_FMT" is on port %"PRIu16,
- ETH_ADDR_ARGS(flow->dl_src), flow->in_port);
- ofproto_revalidate(ofproto, rev_tag);
- }
- }
-
- /* Determine output port. */
- out_port = mac_learning_lookup_tag(ofproto->ml, flow->dl_dst, 0, tags);
- if (out_port < 0) {
- add_output_group_action(actions, DP_GROUP_FLOOD);
- } else if (out_port != flow->in_port) {
- odp_actions_add(actions, ODPAT_OUTPUT)->output.port = out_port;
- } else {
- /* Drop. */
- }
-
- return true;
-}
-
-static const struct ofhooks default_ofhooks = {
- NULL,
- default_normal_ofhook_cb,
- NULL,
- NULL
-};
git://git.onelab.eu / sliver-openvswitch.git / blobdiff