/*
* Copyright (c) 2009, 2010 Nicira Networks.
+ * Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include "ofproto.h"
#include <errno.h>
#include <inttypes.h>
+#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <stdbool.h>
#include "netflow.h"
#include "odp-util.h"
#include "ofp-print.h"
+#include "ofp-util.h"
#include "ofproto-sflow.h"
#include "ofpbuf.h"
#include "openflow/nicira-ext.h"
#include "rconn.h"
#include "shash.h"
#include "status.h"
-#include "stp.h"
#include "stream-ssl.h"
#include "svec.h"
#include "tag.h"
#include "timeval.h"
#include "unixctl.h"
#include "vconn.h"
+#include "vlog.h"
#include "xtoxll.h"
-#define THIS_MODULE VLM_ofproto
-#include "vlog.h"
+VLOG_DEFINE_THIS_MODULE(ofproto)
#include "sflow_api.h"
struct rule {
struct cls_rule cr;
- uint64_t flow_cookie; /* Controller-issued identifier.
+ uint64_t flow_cookie; /* Controller-issued identifier.
(Kept in network-byte order.) */
uint16_t idle_timeout; /* In seconds from time of last use. */
uint16_t hard_timeout; /* In seconds from time of creation. */
struct list list;
/* OpenFlow actions.
+ *
+ * 'n_actions' is the number of elements in the 'actions' array. A single
+ * action may take up more more than one element's worth of space.
*
* A subrule has no actions (it uses the super-rule's actions). */
int n_actions;
static void send_flow_removed(struct ofproto *p, struct rule *rule,
long long int now, uint8_t reason);
-struct ofconn {
- struct list node;
- struct rconn *rconn;
- struct pktbuf *pktbuf;
- int miss_send_len;
+/* ofproto supports two kinds of OpenFlow connections:
+ *
+ * - "Primary" connections to ordinary OpenFlow controllers. ofproto
+ * maintains persistent connections to these controllers and by default
+ * sends them asynchronous messages such as packet-ins.
+ *
+ * - "Service" connections, e.g. from ovs-ofctl. When these connections
+ * drop, it is the other side's responsibility to reconnect them if
+ * necessary. ofproto does not send them asynchronous messages by default.
+ *
+ * Currently, active (tcp, ssl, unix) connections are always "primary"
+ * connections and passive (ptcp, pssl, punix) connections are always "service"
+ * connections. There is no inherent reason for this, but it reflects the
+ * common case.
+ */
+enum ofconn_type {
+ OFCONN_PRIMARY, /* An ordinary OpenFlow controller. */
+ OFCONN_SERVICE /* A service connection, e.g. "ovs-ofctl". */
+};
+
+/* A listener for incoming OpenFlow "service" connections. */
+struct ofservice {
+ struct hmap_node node; /* In struct ofproto's "services" hmap. */
+ struct pvconn *pvconn; /* OpenFlow connection listener. */
+
+ /* These are not used by ofservice directly. They are settings for
+ * accepted "struct ofconn"s from the pvconn. */
+ int probe_interval; /* Max idle time before probing, in seconds. */
+ int rate_limit; /* Max packet-in rate in packets per second. */
+ int burst_limit; /* Limit on accumulating packet credits. */
+};
- struct rconn_packet_counter *packet_in_counter;
+static struct ofservice *ofservice_lookup(struct ofproto *,
+ const char *target);
+static int ofservice_create(struct ofproto *,
+ const struct ofproto_controller *);
+static void ofservice_reconfigure(struct ofservice *,
+ const struct ofproto_controller *);
+static void ofservice_destroy(struct ofproto *, struct ofservice *);
- /* Number of OpenFlow messages queued as replies to OpenFlow requests, and
- * the maximum number before we stop reading OpenFlow requests. */
+/* An OpenFlow connection. */
+struct ofconn {
+ struct ofproto *ofproto; /* The ofproto that owns this connection. */
+ struct list node; /* In struct ofproto's "all_conns" list. */
+ struct rconn *rconn; /* OpenFlow connection. */
+ enum ofconn_type type; /* Type. */
+
+ /* OFPT_PACKET_IN related data. */
+ struct rconn_packet_counter *packet_in_counter; /* # queued on 'rconn'. */
+ struct pinsched *schedulers[2]; /* Indexed by reason code; see below. */
+ struct pktbuf *pktbuf; /* OpenFlow packet buffers. */
+ int miss_send_len; /* Bytes to send of buffered packets. */
+
+ /* Number of OpenFlow messages queued on 'rconn' 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;
+
+ /* type == OFCONN_PRIMARY only. */
+ enum nx_role role; /* Role. */
+ struct hmap_node hmap_node; /* In struct ofproto's "controllers" map. */
+ struct discovery *discovery; /* Controller discovery object, if enabled. */
+ struct status_category *ss; /* Switch status category. */
+ enum ofproto_band band; /* In-band or out-of-band? */
};
-static struct ofconn *ofconn_create(struct ofproto *, struct rconn *);
+/* We use OFPR_NO_MATCH and OFPR_ACTION as indexes into struct ofconn's
+ * "schedulers" array. Their values are 0 and 1, and their meanings and values
+ * coincide with _ODPL_MISS_NR and _ODPL_ACTION_NR, so this is convenient. In
+ * case anything ever changes, check their values here. */
+#define N_SCHEDULERS 2
+BUILD_ASSERT_DECL(OFPR_NO_MATCH == 0);
+BUILD_ASSERT_DECL(OFPR_NO_MATCH == _ODPL_MISS_NR);
+BUILD_ASSERT_DECL(OFPR_ACTION == 1);
+BUILD_ASSERT_DECL(OFPR_ACTION == _ODPL_ACTION_NR);
+
+static struct ofconn *ofconn_create(struct ofproto *, struct rconn *,
+ enum ofconn_type);
static void ofconn_destroy(struct ofconn *);
static void ofconn_run(struct ofconn *, struct ofproto *);
static void ofconn_wait(struct ofconn *);
+static bool ofconn_receives_async_msgs(const struct ofconn *);
+static char *ofconn_make_name(const struct ofproto *, const char *target);
+static void ofconn_set_rate_limit(struct ofconn *, int rate, int burst);
+
static void queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn,
struct rconn_packet_counter *counter);
+static void send_packet_in(struct ofproto *, struct ofpbuf *odp_msg);
+static void do_send_packet_in(struct ofpbuf *odp_msg, void *ofconn);
+
struct ofproto {
/* Settings. */
uint64_t datapath_id; /* Datapath ID. */
/* 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 netflow *netflow;
struct ofproto_sflow *sflow;
+ /* In-band control. */
+ struct in_band *in_band;
+ long long int next_in_band_update;
+ struct sockaddr_in *extra_in_band_remotes;
+ size_t n_extra_remotes;
+
/* Flow table. */
struct classifier cls;
bool need_revalidate;
long long int next_expiration;
struct tag_set revalidate_set;
+ bool tun_id_from_cookie;
/* OpenFlow connections. */
- struct list all_conns;
- struct ofconn *controller;
- struct pvconn **listeners;
- size_t n_listeners;
+ struct hmap controllers; /* Controller "struct ofconn"s. */
+ struct list all_conns; /* Contains "struct ofconn"s. */
+ enum ofproto_fail_mode fail_mode;
+
+ /* OpenFlow listeners. */
+ struct hmap services; /* Contains "struct ofservice"s. */
struct pvconn **snoops;
size_t n_snoops;
static uint64_t pick_datapath_id(const struct ofproto *);
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 ofproto_expire(struct ofproto *);
+
static void update_stats(struct ofproto *, struct rule *,
const struct odp_flow_stats *);
-static void expire_rule(struct cls_rule *, void *ofproto);
-static void active_timeout(struct ofproto *ofproto, struct rule *rule);
static bool revalidate_rule(struct ofproto *p, struct rule *rule);
static void revalidate_cb(struct cls_rule *rule_, void *p_);
/* 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->netflow = NULL;
p->sflow = NULL;
/* Initialize OpenFlow connections. */
list_init(&p->all_conns);
- p->controller = ofconn_create(p, rconn_create(5, 8));
- p->controller->pktbuf = pktbuf_create();
- p->controller->miss_send_len = OFP_DEFAULT_MISS_SEND_LEN;
- p->listeners = NULL;
- p->n_listeners = 0;
+ hmap_init(&p->controllers);
+ hmap_init(&p->services);
p->snoops = NULL;
p->n_snoops = 0;
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);
-
/* Pick final datapath ID. */
p->datapath_id = pick_datapath_id(p);
VLOG_INFO("using datapath ID %016"PRIx64, p->datapath_id);
p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p);
if (p->datapath_id != old_dpid) {
VLOG_INFO("datapath ID changed to %016"PRIx64, p->datapath_id);
- rconn_reconnect(p->controller->rconn);
+
+ /* Force all active connections to reconnect, since there is no way to
+ * notify a controller that the datapath ID has changed. */
+ ofproto_reconnect_controllers(p);
+ }
+}
+
+static bool
+is_discovery_controller(const struct ofproto_controller *c)
+{
+ return !strcmp(c->target, "discover");
+}
+
+static bool
+is_in_band_controller(const struct ofproto_controller *c)
+{
+ return is_discovery_controller(c) || c->band == OFPROTO_IN_BAND;
+}
+
+/* Creates a new controller in 'ofproto'. Some of the settings are initially
+ * drawn from 'c', but update_controller() needs to be called later to finish
+ * the new ofconn's configuration. */
+static void
+add_controller(struct ofproto *ofproto, const struct ofproto_controller *c)
+{
+ struct discovery *discovery;
+ struct ofconn *ofconn;
+
+ if (is_discovery_controller(c)) {
+ int error = discovery_create(c->accept_re, c->update_resolv_conf,
+ ofproto->dpif, ofproto->switch_status,
+ &discovery);
+ if (error) {
+ return;
+ }
+ } else {
+ discovery = NULL;
+ }
+
+ ofconn = ofconn_create(ofproto, rconn_create(5, 8), OFCONN_PRIMARY);
+ ofconn->pktbuf = pktbuf_create();
+ ofconn->miss_send_len = OFP_DEFAULT_MISS_SEND_LEN;
+ if (discovery) {
+ ofconn->discovery = discovery;
+ } else {
+ char *name = ofconn_make_name(ofproto, c->target);
+ rconn_connect(ofconn->rconn, c->target, name);
+ free(name);
+ }
+ hmap_insert(&ofproto->controllers, &ofconn->hmap_node,
+ hash_string(c->target, 0));
+}
+
+/* Reconfigures 'ofconn' to match 'c'. This function cannot update an ofconn's
+ * target or turn discovery on or off (these are done by creating new ofconns
+ * and deleting old ones), but it can update the rest of an ofconn's
+ * settings. */
+static void
+update_controller(struct ofconn *ofconn, const struct ofproto_controller *c)
+{
+ int probe_interval;
+
+ ofconn->band = (is_in_band_controller(c)
+ ? OFPROTO_IN_BAND : OFPROTO_OUT_OF_BAND);
+
+ rconn_set_max_backoff(ofconn->rconn, c->max_backoff);
+
+ probe_interval = c->probe_interval ? MAX(c->probe_interval, 5) : 0;
+ rconn_set_probe_interval(ofconn->rconn, probe_interval);
+
+ if (ofconn->discovery) {
+ discovery_set_update_resolv_conf(ofconn->discovery,
+ c->update_resolv_conf);
+ discovery_set_accept_controller_re(ofconn->discovery, c->accept_re);
+ }
+
+ ofconn_set_rate_limit(ofconn, c->rate_limit, c->burst_limit);
+}
+
+static const char *
+ofconn_get_target(const struct ofconn *ofconn)
+{
+ return ofconn->discovery ? "discover" : rconn_get_target(ofconn->rconn);
+}
+
+static struct ofconn *
+find_controller_by_target(struct ofproto *ofproto, const char *target)
+{
+ struct ofconn *ofconn;
+
+ HMAP_FOR_EACH_WITH_HASH (ofconn, struct ofconn, hmap_node,
+ hash_string(target, 0), &ofproto->controllers) {
+ if (!strcmp(ofconn_get_target(ofconn), target)) {
+ return ofconn;
+ }
+ }
+ return NULL;
+}
+
+static void
+update_in_band_remotes(struct ofproto *ofproto)
+{
+ const struct ofconn *ofconn;
+ struct sockaddr_in *addrs;
+ size_t max_addrs, n_addrs;
+ bool discovery;
+ size_t i;
+
+ /* Allocate enough memory for as many remotes as we could possibly have. */
+ max_addrs = ofproto->n_extra_remotes + hmap_count(&ofproto->controllers);
+ addrs = xmalloc(max_addrs * sizeof *addrs);
+ n_addrs = 0;
+
+ /* Add all the remotes. */
+ discovery = false;
+ HMAP_FOR_EACH (ofconn, struct ofconn, hmap_node, &ofproto->controllers) {
+ struct sockaddr_in *sin = &addrs[n_addrs];
+
+ if (ofconn->band == OFPROTO_OUT_OF_BAND) {
+ continue;
+ }
+
+ sin->sin_addr.s_addr = rconn_get_remote_ip(ofconn->rconn);
+ if (sin->sin_addr.s_addr) {
+ sin->sin_port = rconn_get_remote_port(ofconn->rconn);
+ n_addrs++;
+ }
+ if (ofconn->discovery) {
+ discovery = true;
+ }
+ }
+ for (i = 0; i < ofproto->n_extra_remotes; i++) {
+ addrs[n_addrs++] = ofproto->extra_in_band_remotes[i];
+ }
+
+ /* Create or update or destroy in-band.
+ *
+ * Ordinarily we only enable in-band if there's at least one remote
+ * address, but discovery needs the in-band rules for DHCP to be installed
+ * even before we know any remote addresses. */
+ if (n_addrs || discovery) {
+ if (!ofproto->in_band) {
+ in_band_create(ofproto, ofproto->dpif, ofproto->switch_status,
+ &ofproto->in_band);
+ }
+ if (ofproto->in_band) {
+ in_band_set_remotes(ofproto->in_band, addrs, n_addrs);
+ }
+ ofproto->next_in_band_update = time_msec() + 1000;
+ } else {
+ in_band_destroy(ofproto->in_band);
+ ofproto->in_band = NULL;
+ }
+
+ /* Clean up. */
+ free(addrs);
+}
+
+static void
+update_fail_open(struct ofproto *p)
+{
+ struct ofconn *ofconn;
+
+ if (!hmap_is_empty(&p->controllers)
+ && p->fail_mode == OFPROTO_FAIL_STANDALONE) {
+ struct rconn **rconns;
+ size_t n;
+
+ if (!p->fail_open) {
+ p->fail_open = fail_open_create(p, p->switch_status);
+ }
+
+ n = 0;
+ rconns = xmalloc(hmap_count(&p->controllers) * sizeof *rconns);
+ HMAP_FOR_EACH (ofconn, struct ofconn, hmap_node, &p->controllers) {
+ rconns[n++] = ofconn->rconn;
+ }
+
+ fail_open_set_controllers(p->fail_open, rconns, n);
+ /* p->fail_open takes ownership of 'rconns'. */
+ } else {
+ fail_open_destroy(p->fail_open);
+ p->fail_open = NULL;
}
}
void
-ofproto_set_probe_interval(struct ofproto *p, int probe_interval)
+ofproto_set_controllers(struct ofproto *p,
+ const struct ofproto_controller *controllers,
+ size_t n_controllers)
{
- 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);
+ struct shash new_controllers;
+ struct ofconn *ofconn, *next_ofconn;
+ struct ofservice *ofservice, *next_ofservice;
+ bool ss_exists;
+ size_t i;
+
+ /* Create newly configured controllers and services.
+ * Create a name to ofproto_controller mapping in 'new_controllers'. */
+ shash_init(&new_controllers);
+ for (i = 0; i < n_controllers; i++) {
+ const struct ofproto_controller *c = &controllers[i];
+
+ if (!vconn_verify_name(c->target) || !strcmp(c->target, "discover")) {
+ if (!find_controller_by_target(p, c->target)) {
+ add_controller(p, c);
+ }
+ } else if (!pvconn_verify_name(c->target)) {
+ if (!ofservice_lookup(p, c->target) && ofservice_create(p, c)) {
+ continue;
+ }
+ } else {
+ VLOG_WARN_RL(&rl, "%s: unsupported controller \"%s\"",
+ dpif_name(p->dpif), c->target);
+ continue;
+ }
+
+ shash_add_once(&new_controllers, c->target, &controllers[i]);
+ }
+
+ /* Delete controllers that are no longer configured.
+ * Update configuration of all now-existing controllers. */
+ ss_exists = false;
+ HMAP_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, hmap_node,
+ &p->controllers) {
+ struct ofproto_controller *c;
+
+ c = shash_find_data(&new_controllers, ofconn_get_target(ofconn));
+ if (!c) {
+ ofconn_destroy(ofconn);
+ } else {
+ update_controller(ofconn, c);
+ if (ofconn->ss) {
+ ss_exists = true;
+ }
+ }
+ }
+
+ /* Delete services that are no longer configured.
+ * Update configuration of all now-existing services. */
+ HMAP_FOR_EACH_SAFE (ofservice, next_ofservice, struct ofservice, node,
+ &p->services) {
+ struct ofproto_controller *c;
+
+ c = shash_find_data(&new_controllers,
+ pvconn_get_name(ofservice->pvconn));
+ if (!c) {
+ ofservice_destroy(p, ofservice);
+ } else {
+ ofservice_reconfigure(ofservice, c);
+ }
+ }
+
+ shash_destroy(&new_controllers);
+
+ update_in_band_remotes(p);
+ update_fail_open(p);
+
+ if (!hmap_is_empty(&p->controllers) && !ss_exists) {
+ ofconn = CONTAINER_OF(hmap_first(&p->controllers),
+ struct ofconn, hmap_node);
+ ofconn->ss = switch_status_register(p->switch_status, "remote",
+ rconn_status_cb, ofconn->rconn);
+ }
+}
+
+void
+ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode)
+{
+ p->fail_mode = fail_mode;
+ update_fail_open(p);
+}
+
+/* Drops the connections between 'ofproto' and all of its controllers, forcing
+ * them to reconnect. */
+void
+ofproto_reconnect_controllers(struct ofproto *ofproto)
+{
+ struct ofconn *ofconn;
+
+ LIST_FOR_EACH (ofconn, struct ofconn, node, &ofproto->all_conns) {
+ rconn_reconnect(ofconn->rconn);
+ }
+}
+
+static bool
+any_extras_changed(const struct ofproto *ofproto,
+ const struct sockaddr_in *extras, size_t n)
+{
+ size_t i;
+
+ if (n != ofproto->n_extra_remotes) {
+ return true;
+ }
+
+ for (i = 0; i < n; i++) {
+ const struct sockaddr_in *old = &ofproto->extra_in_band_remotes[i];
+ const struct sockaddr_in *new = &extras[i];
+
+ if (old->sin_addr.s_addr != new->sin_addr.s_addr ||
+ old->sin_port != new->sin_port) {
+ return true;
+ }
}
+
+ return false;
}
+/* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
+ * in-band control should guarantee access, in the same way that in-band
+ * control guarantees access to OpenFlow controllers. */
void
-ofproto_set_max_backoff(struct ofproto *p, int max_backoff)
+ofproto_set_extra_in_band_remotes(struct ofproto *ofproto,
+ const struct sockaddr_in *extras, size_t n)
{
- rconn_set_max_backoff(p->controller->rconn, max_backoff);
+ if (!any_extras_changed(ofproto, extras, n)) {
+ return;
+ }
+
+ free(ofproto->extra_in_band_remotes);
+ ofproto->n_extra_remotes = n;
+ ofproto->extra_in_band_remotes = xmemdup(extras, n * sizeof *extras);
+
+ update_in_band_remotes(ofproto);
}
void
}
}
-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)
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)
{
}
}
-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 OVS_UNUSED, bool enable_stp)
-{
- /* XXX */
- if (enable_stp) {
- VLOG_WARN("STP is not yet implemented");
- return EINVAL;
- } else {
- 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)
+ofproto_has_primary_controller(const struct ofproto *ofproto)
{
- return rconn_get_name(ofproto->controller->rconn);
+ return !hmap_is_empty(&ofproto->controllers);
}
-void
-ofproto_get_listeners(const struct ofproto *ofproto, struct svec *listeners)
+enum ofproto_fail_mode
+ofproto_get_fail_mode(const struct ofproto *p)
{
- size_t i;
-
- for (i = 0; i < ofproto->n_listeners; i++) {
- svec_add(listeners, pvconn_get_name(ofproto->listeners[i]));
- }
+ return p->fail_mode;
}
void
void
ofproto_destroy(struct ofproto *p)
{
+ struct ofservice *ofservice, *next_ofservice;
struct ofconn *ofconn, *next_ofconn;
struct ofport *ofport;
unsigned int port_no;
return;
}
- /* Destroy fail-open early, because it touches the classifier. */
- ofproto_set_failure(p, false);
+ /* Destroy fail-open and in-band early, since they touch the classifier. */
+ fail_open_destroy(p->fail_open);
+ p->fail_open = NULL;
+
+ in_band_destroy(p->in_band);
+ p->in_band = NULL;
+ free(p->extra_in_band_remotes);
ofproto_flush_flows(p);
classifier_destroy(&p->cls);
&p->all_conns) {
ofconn_destroy(ofconn);
}
+ hmap_destroy(&p->controllers);
dpif_close(p->dpif);
netdev_monitor_destroy(p->netdev_monitor);
shash_destroy(&p->port_by_name);
switch_status_destroy(p->switch_status);
- in_band_destroy(p->in_band);
- discovery_destroy(p->discovery);
- pinsched_destroy(p->miss_sched);
- pinsched_destroy(p->action_sched);
netflow_destroy(p->netflow);
ofproto_sflow_destroy(p->sflow);
- switch_status_unregister(p->ss_cat);
-
- for (i = 0; i < p->n_listeners; i++) {
- pvconn_close(p->listeners[i]);
+ HMAP_FOR_EACH_SAFE (ofservice, next_ofservice, struct ofservice, node,
+ &p->services) {
+ ofservice_destroy(p, ofservice);
}
- free(p->listeners);
+ hmap_destroy(&p->services);
for (i = 0; i < p->n_snoops; i++) {
pvconn_close(p->snoops[i]);
}
}
+/* Returns a "preference level" for snooping 'ofconn'. A higher return value
+ * means that 'ofconn' is more interesting for monitoring than a lower return
+ * value. */
+static int
+snoop_preference(const struct ofconn *ofconn)
+{
+ switch (ofconn->role) {
+ case NX_ROLE_MASTER:
+ return 3;
+ case NX_ROLE_OTHER:
+ return 2;
+ case NX_ROLE_SLAVE:
+ return 1;
+ default:
+ /* Shouldn't happen. */
+ return 0;
+ }
+}
+
+/* One of ofproto's "snoop" pvconns has accepted a new connection on 'vconn'.
+ * Connects this vconn to a controller. */
+static void
+add_snooper(struct ofproto *ofproto, struct vconn *vconn)
+{
+ struct ofconn *ofconn, *best;
+
+ /* Pick a controller for monitoring. */
+ best = NULL;
+ LIST_FOR_EACH (ofconn, struct ofconn, node, &ofproto->all_conns) {
+ if (ofconn->type == OFCONN_PRIMARY
+ && (!best || snoop_preference(ofconn) > snoop_preference(best))) {
+ best = ofconn;
+ }
+ }
+
+ if (best) {
+ rconn_add_monitor(best->rconn, vconn);
+ } else {
+ VLOG_INFO_RL(&rl, "no controller connection to snoop");
+ vconn_close(vconn);
+ }
+}
+
int
ofproto_run1(struct ofproto *p)
{
struct ofconn *ofconn, *next_ofconn;
+ struct ofservice *ofservice;
char *devname;
int error;
int i;
}
if (p->in_band) {
+ if (time_msec() >= p->next_in_band_update) {
+ update_in_band_remotes(p);
+ }
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);
- }
- }
- }
- pinsched_run(p->miss_sched, send_packet_in_miss, p);
- pinsched_run(p->action_sched, send_packet_in_action, p);
LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node,
&p->all_conns) {
fail_open_run(p->fail_open);
}
- for (i = 0; i < p->n_listeners; i++) {
+ HMAP_FOR_EACH (ofservice, struct ofservice, node, &p->services) {
struct vconn *vconn;
int retval;
- retval = pvconn_accept(p->listeners[i], OFP_VERSION, &vconn);
+ retval = pvconn_accept(ofservice->pvconn, OFP_VERSION, &vconn);
if (!retval) {
- ofconn_create(p, rconn_new_from_vconn("passive", vconn));
+ struct ofconn *ofconn;
+ struct rconn *rconn;
+ char *name;
+
+ rconn = rconn_create(ofservice->probe_interval, 0);
+ name = ofconn_make_name(p, vconn_get_name(vconn));
+ rconn_connect_unreliably(rconn, vconn, name);
+ free(name);
+
+ ofconn = ofconn_create(p, rconn, OFCONN_SERVICE);
+ ofconn_set_rate_limit(ofconn, ofservice->rate_limit,
+ ofservice->burst_limit);
} else if (retval != EAGAIN) {
VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
}
retval = pvconn_accept(p->snoops[i], OFP_VERSION, &vconn);
if (!retval) {
- rconn_add_monitor(p->controller->rconn, vconn);
+ add_snooper(p, vconn);
} else if (retval != EAGAIN) {
VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
}
if (time_msec() >= p->next_expiration) {
COVERAGE_INC(ofproto_expiration);
+ ofproto_expire(p);
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) {
void
ofproto_wait(struct ofproto *p)
{
+ struct ofservice *ofservice;
struct ofconn *ofconn;
size_t i;
ofconn_wait(ofconn);
}
if (p->in_band) {
+ poll_timer_wait_until(p->next_in_band_update);
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->sflow) {
ofproto_sflow_wait(p->sflow);
}
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());
+ poll_timer_wait_until(p->next_expiration);
}
- for (i = 0; i < p->n_listeners; i++) {
- pvconn_wait(p->listeners[i]);
+ HMAP_FOR_EACH (ofservice, struct ofservice, node, &p->services) {
+ pvconn_wait(ofservice->pvconn);
}
for (i = 0; i < p->n_snoops; i++) {
pvconn_wait(p->snoops[i]);
bool
ofproto_is_alive(const struct ofproto *p)
{
- return p->discovery || rconn_is_alive(p->controller->rconn);
+ return !hmap_is_empty(&p->controllers);
}
int
{
struct rule *rule;
rule = rule_create(p, NULL, actions, n_actions,
- idle_timeout >= 0 ? idle_timeout : 5 /* XXX */,
+ idle_timeout >= 0 ? idle_timeout : 5 /* XXX */,
0, 0, false);
- cls_rule_from_flow(&rule->cr, flow, wildcards, priority);
+ cls_rule_from_flow(flow, wildcards, priority, &rule->cr);
rule_insert(p, rule, NULL, 0);
}
memset(&netdev_options, 0, sizeof netdev_options);
netdev_options.name = odp_port->devname;
netdev_options.ethertype = NETDEV_ETH_TYPE_NONE;
- netdev_options.may_open = true;
error = netdev_open(&netdev_options, &netdev);
if (error) {
struct ofp_port_status *ops;
struct ofpbuf *b;
+ if (!ofconn_receives_async_msgs(ofconn)) {
+ continue;
+ }
+
ops = make_openflow_xid(sizeof *ops, OFPT_PORT_STATUS, 0, &b);
ops->reason = reason;
ops->desc = ofport->opp;
uint16_t odp_port = ofp_port_to_odp_port(ofport->opp.port_no);
netdev_monitor_remove(p->netdev_monitor, ofport->netdev);
- port_array_set(&p->ports, odp_port, NULL);
+ port_array_delete(&p->ports, odp_port);
shash_delete(&p->port_by_name,
shash_find(&p->port_by_name, (char *) ofport->opp.name));
if (p->sflow) {
}
\f
static struct ofconn *
-ofconn_create(struct ofproto *p, struct rconn *rconn)
+ofconn_create(struct ofproto *p, struct rconn *rconn, enum ofconn_type type)
{
- struct ofconn *ofconn = xmalloc(sizeof *ofconn);
+ struct ofconn *ofconn = xzalloc(sizeof *ofconn);
+ ofconn->ofproto = p;
list_push_back(&p->all_conns, &ofconn->node);
ofconn->rconn = rconn;
+ ofconn->type = type;
+ ofconn->role = NX_ROLE_OTHER;
+ ofconn->packet_in_counter = rconn_packet_counter_create ();
ofconn->pktbuf = NULL;
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)
{
+ if (ofconn->type == OFCONN_PRIMARY) {
+ hmap_remove(&ofconn->ofproto->controllers, &ofconn->hmap_node);
+ }
+ discovery_destroy(ofconn->discovery);
+
list_remove(&ofconn->node);
+ switch_status_unregister(ofconn->ss);
rconn_destroy(ofconn->rconn);
rconn_packet_counter_destroy(ofconn->packet_in_counter);
rconn_packet_counter_destroy(ofconn->reply_counter);
ofconn_run(struct ofconn *ofconn, struct ofproto *p)
{
int iteration;
+ size_t i;
+
+ if (ofconn->discovery) {
+ char *controller_name;
+ if (rconn_is_connectivity_questionable(ofconn->rconn)) {
+ discovery_question_connectivity(ofconn->discovery);
+ }
+ if (discovery_run(ofconn->discovery, &controller_name)) {
+ if (controller_name) {
+ char *ofconn_name = ofconn_make_name(p, controller_name);
+ rconn_connect(ofconn->rconn, controller_name, ofconn_name);
+ free(ofconn_name);
+ } else {
+ rconn_disconnect(ofconn->rconn);
+ }
+ }
+ }
+
+ for (i = 0; i < N_SCHEDULERS; i++) {
+ pinsched_run(ofconn->schedulers[i], do_send_packet_in, ofconn);
+ }
rconn_run(ofconn->rconn);
}
}
- if (ofconn != p->controller && !rconn_is_alive(ofconn->rconn)) {
+ if (!ofconn->discovery && !rconn_is_alive(ofconn->rconn)) {
ofconn_destroy(ofconn);
}
}
static void
ofconn_wait(struct ofconn *ofconn)
{
+ int i;
+
+ if (ofconn->discovery) {
+ discovery_wait(ofconn->discovery);
+ }
+ for (i = 0; i < N_SCHEDULERS; i++) {
+ pinsched_wait(ofconn->schedulers[i]);
+ }
rconn_run_wait(ofconn->rconn);
if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) {
rconn_recv_wait(ofconn->rconn);
COVERAGE_INC(ofproto_ofconn_stuck);
}
}
+
+/* Returns true if 'ofconn' should receive asynchronous messages. */
+static bool
+ofconn_receives_async_msgs(const struct ofconn *ofconn)
+{
+ if (ofconn->type == OFCONN_PRIMARY) {
+ /* Primary controllers always get asynchronous messages unless they
+ * have configured themselves as "slaves". */
+ return ofconn->role != NX_ROLE_SLAVE;
+ } else {
+ /* Service connections don't get asynchronous messages unless they have
+ * explicitly asked for them by setting a nonzero miss send length. */
+ return ofconn->miss_send_len > 0;
+ }
+}
+
+/* Returns a human-readable name for an OpenFlow connection between 'ofproto'
+ * and 'target', suitable for use in log messages for identifying the
+ * connection.
+ *
+ * The name is dynamically allocated. The caller should free it (with free())
+ * when it is no longer needed. */
+static char *
+ofconn_make_name(const struct ofproto *ofproto, const char *target)
+{
+ return xasprintf("%s<->%s", dpif_base_name(ofproto->dpif), target);
+}
+
+static void
+ofconn_set_rate_limit(struct ofconn *ofconn, int rate, int burst)
+{
+ int i;
+
+ for (i = 0; i < N_SCHEDULERS; i++) {
+ struct pinsched **s = &ofconn->schedulers[i];
+
+ if (rate > 0) {
+ if (!*s) {
+ *s = pinsched_create(rate, burst,
+ ofconn->ofproto->switch_status);
+ } else {
+ pinsched_set_limits(*s, rate, burst);
+ }
+ } else {
+ pinsched_destroy(*s);
+ *s = NULL;
+ }
+ }
+}
+\f
+static void
+ofservice_reconfigure(struct ofservice *ofservice,
+ const struct ofproto_controller *c)
+{
+ ofservice->probe_interval = c->probe_interval;
+ ofservice->rate_limit = c->rate_limit;
+ ofservice->burst_limit = c->burst_limit;
+}
+
+/* Creates a new ofservice in 'ofproto'. Returns 0 if successful, otherwise a
+ * positive errno value. */
+static int
+ofservice_create(struct ofproto *ofproto, const struct ofproto_controller *c)
+{
+ struct ofservice *ofservice;
+ struct pvconn *pvconn;
+ int error;
+
+ error = pvconn_open(c->target, &pvconn);
+ if (error) {
+ return error;
+ }
+
+ ofservice = xzalloc(sizeof *ofservice);
+ hmap_insert(&ofproto->services, &ofservice->node,
+ hash_string(c->target, 0));
+ ofservice->pvconn = pvconn;
+
+ ofservice_reconfigure(ofservice, c);
+
+ return 0;
+}
+
+static void
+ofservice_destroy(struct ofproto *ofproto, struct ofservice *ofservice)
+{
+ hmap_remove(&ofproto->services, &ofservice->node);
+ pvconn_close(ofservice->pvconn);
+ free(ofservice);
+}
+
+/* Finds and returns the ofservice within 'ofproto' that has the given
+ * 'target', or a null pointer if none exists. */
+static struct ofservice *
+ofservice_lookup(struct ofproto *ofproto, const char *target)
+{
+ struct ofservice *ofservice;
+
+ HMAP_FOR_EACH_WITH_HASH (ofservice, struct ofservice, node,
+ hash_string(target, 0), &ofproto->services) {
+ if (!strcmp(pvconn_get_name(ofservice->pvconn), target)) {
+ return ofservice;
+ }
+ }
+ return NULL;
+}
\f
/* Caller is responsible for initializing the 'cr' member of the returned
* rule. */
}
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) {
+ if (action_outputs_to_port(oa, out_port)) {
return true;
}
}
return false;
}
+/* 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 *ofproto, uint16_t in_port,
+ const union odp_action *actions, size_t n_actions,
+ struct ofpbuf *packet)
+{
+ if (n_actions == 1 && actions[0].type == ODPAT_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 odp_msg *msg;
+
+ msg = ofpbuf_push_uninit(packet, sizeof *msg);
+ msg->type = _ODPL_ACTION_NR;
+ msg->length = sizeof(struct odp_msg) + packet->size;
+ msg->port = in_port;
+ msg->reserved = 0;
+ msg->arg = actions[0].controller.arg;
+
+ send_packet_in(ofproto, packet);
+
+ return true;
+ } else {
+ int error;
+
+ error = dpif_execute(ofproto->dpif, in_port,
+ actions, n_actions, packet);
+ ofpbuf_delete(packet);
+ return !error;
+ }
+}
+
/* Executes the actions indicated by 'rule' on 'packet', which is in flow
- * 'flow' and is considered to have arrived on ODP port 'in_port'.
+ * 'flow' and is considered to have arrived on ODP port 'in_port'. 'packet'
+ * must have at least sizeof(struct ofp_packet_in) bytes of headroom.
*
* 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,
* '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'. */
+ * actions and apply them to 'packet'.
+ *
+ * Takes ownership of 'packet'. */
static void
rule_execute(struct ofproto *ofproto, struct rule *rule,
struct ofpbuf *packet, const flow_t *flow)
{
const union odp_action *actions;
+ struct odp_flow_stats stats;
size_t n_actions;
struct odp_actions a;
+ assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in));
+
/* Grab or compose the ODP actions.
*
* The special case for an exact-match 'rule' where 'flow' is not the
struct rule *super = rule->super ? rule->super : rule;
if (xlate_actions(super->actions, super->n_actions, flow, ofproto,
packet, &a, NULL, 0, NULL)) {
+ ofpbuf_delete(packet);
return;
}
actions = a.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);
+ flow_extract_stats(flow, packet, &stats);
+ if (execute_odp_actions(ofproto, flow->in_port,
+ actions, n_actions, packet)) {
update_stats(ofproto, rule, &stats);
rule->used = time_msec();
netflow_flow_update_time(ofproto->netflow, &rule->nf_flow, rule->used);
}
}
+/* Inserts 'rule' into 'p''s flow table.
+ *
+ * If 'packet' is nonnull, takes ownership of 'packet', executes 'rule''s
+ * actions on it and credits the statistics for sending the packet to 'rule'.
+ * 'packet' must have at least sizeof(struct ofp_packet_in) bytes of
+ * headroom. */
static void
rule_insert(struct ofproto *p, struct rule *rule, struct ofpbuf *packet,
uint16_t in_port)
/* Send the packet and credit it to the rule. */
if (packet) {
flow_t flow;
- flow_extract(packet, in_port, &flow);
+ flow_extract(packet, 0, in_port, &flow);
rule_execute(p, rule, packet, &flow);
}
rule->idle_timeout, rule->hard_timeout,
0, false);
COVERAGE_INC(ofproto_subrule_create);
- cls_rule_from_flow(&subrule->cr, flow, 0,
- (rule->cr.priority <= UINT16_MAX ? UINT16_MAX
- : rule->cr.priority));
+ cls_rule_from_flow(flow, 0, (rule->cr.priority <= UINT16_MAX ? UINT16_MAX
+ : rule->cr.priority), &subrule->cr);
classifier_insert_exact(&ofproto->cls, &subrule->cr);
return subrule;
}
+/* Remove 'rule' from 'ofproto' and free up the associated memory:
+ *
+ * - If 'rule' was installed in the datapath, uninstalls it and updates
+ * 'rule''s statistics (or its super-rule's statistics, if it is a
+ * subrule), via rule_uninstall().
+ *
+ * - Removes 'rule' from the classifier.
+ *
+ * - If 'rule' is a super-rule that has subrules, revalidates (and possibly
+ * uninstalls and destroys) its subrules, via rule_destroy().
+ */
static void
rule_remove(struct ofproto *ofproto, struct rule *rule)
{
put->flow.key = rule->cr.flow;
put->flow.actions = rule->odp_actions;
put->flow.n_actions = rule->n_odp_actions;
+ put->flow.flags = 0;
put->flags = flags;
return dpif_flow_put(ofproto->dpif, put);
}
&& total_bytes > rule->accounted_bytes)
{
ofproto->ofhooks->account_flow_cb(
- &rule->cr.flow, rule->odp_actions, rule->n_odp_actions,
+ &rule->cr.flow, rule->tags, rule->odp_actions, rule->n_odp_actions,
total_bytes - rule->accounted_bytes, ofproto->aux);
rule->accounted_bytes = total_bytes;
}
}
+/* 'rule' must be an exact-match rule in 'p'.
+ *
+ * If 'rule' is installed in the datapath, uninstalls it and updates's
+ * statistics. If 'rule' is a subrule, the statistics that are updated are
+ * actually its super-rule's statistics; otherwise 'rule''s own statistics are
+ * updated.
+ *
+ * If 'rule' is not installed, this function has no effect. */
static void
rule_uninstall(struct ofproto *p, struct rule *rule)
{
odp_flow.key = rule->cr.flow;
odp_flow.actions = NULL;
odp_flow.n_actions = 0;
+ odp_flow.flags = 0;
if (!dpif_flow_del(p->dpif, &odp_flow)) {
update_stats(p, rule, &odp_flow.stats);
}
* NetFlow expiration messages since it is just part of the control
* logic for the network and not real traffic. */
- if (rule && rule->super) {
- struct rule *super = rule->super;
-
- return super->n_actions == 1 &&
- super->actions[0].type == htons(OFPAT_OUTPUT) &&
- super->actions[0].output.port == htons(OFPP_CONTROLLER);
- }
-
- return false;
+ return (rule
+ && rule->super
+ && rule->super->n_actions == 1
+ && action_outputs_to_port(&rule->super->actions[0],
+ htons(OFPP_CONTROLLER)));
}
static void
(1u << OFPAT_SET_NW_DST) |
(1u << OFPAT_SET_NW_TOS) |
(1u << OFPAT_SET_TP_SRC) |
- (1u << OFPAT_SET_TP_DST));
+ (1u << OFPAT_SET_TP_DST) |
+ (1u << OFPAT_ENQUEUE));
PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
hton_ofp_phy_port(ofpbuf_put(buf, &port->opp, sizeof port->opp));
}
flags = ntohs(osc->flags);
- if (ofconn == p->controller) {
+ if (ofconn->type == OFCONN_PRIMARY && ofconn->role != NX_ROLE_SLAVE) {
switch (flags & OFPC_FRAG_MASK) {
case OFPC_FRAG_NORMAL:
dpif_set_drop_frags(p->dpif, false);
}
}
- 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_controller_action(struct odp_actions *actions,
- const struct ofp_action_output *oao)
+add_controller_action(struct odp_actions *actions, uint16_t max_len)
{
union odp_action *a = odp_actions_add(actions, ODPAT_CONTROLLER);
- a->controller.arg = oao->max_len ? ntohs(oao->max_len) : UINT32_MAX;
+ a->controller.arg = max_len;
}
struct action_xlate_ctx {
/* Input. */
- const flow_t *flow; /* Flow to which these actions correspond. */
+ 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
uint16_t nf_output_iface; /* Output interface index for NetFlow. */
};
+/* Maximum depth of flow table recursion (due to NXAST_RESUBMIT actions) in a
+ * flow translation. */
+#define MAX_RESUBMIT_RECURSION 8
+
static void do_xlate_actions(const union ofp_action *in, size_t n_in,
struct action_xlate_ctx *ctx);
static void
xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port)
{
- if (!ctx->recurse) {
+ if (ctx->recurse < MAX_RESUBMIT_RECURSION) {
+ uint16_t old_in_port;
struct rule *rule;
- flow_t flow;
- flow = *ctx->flow;
- flow.in_port = 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 = lookup_valid_rule(ctx->ofproto, &ctx->flow);
+ ctx->flow.in_port = old_in_port;
- rule = lookup_valid_rule(ctx->ofproto, &flow);
if (rule) {
if (rule->super) {
rule = rule->super;
do_xlate_actions(rule->actions, rule->n_actions, ctx);
ctx->recurse--;
}
+ } else {
+ 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
-xlate_output_action(struct action_xlate_ctx *ctx,
- const struct ofp_action_output *oao)
+xlate_output_action__(struct action_xlate_ctx *ctx,
+ uint16_t port, uint16_t max_len)
{
uint16_t odp_port;
uint16_t prev_nf_output_iface = ctx->nf_output_iface;
ctx->nf_output_iface = NF_OUT_DROP;
- switch (ntohs(oao->port)) {
+ switch (port) {
case OFPP_IN_PORT:
- add_output_action(ctx, ctx->flow->in_port);
+ add_output_action(ctx, ctx->flow.in_port);
break;
case OFPP_TABLE:
- xlate_table_action(ctx, ctx->flow->in_port);
+ xlate_table_action(ctx, ctx->flow.in_port);
break;
case OFPP_NORMAL:
- if (!ctx->ofproto->ofhooks->normal_cb(ctx->flow, ctx->packet,
+ if (!ctx->ofproto->ofhooks->normal_cb(&ctx->flow, ctx->packet,
ctx->out, ctx->tags,
&ctx->nf_output_iface,
ctx->ofproto->aux)) {
add_output_group_action(ctx->out, DP_GROUP_ALL, &ctx->nf_output_iface);
break;
case OFPP_CONTROLLER:
- add_controller_action(ctx->out, oao);
+ add_controller_action(ctx->out, max_len);
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) {
+ odp_port = ofp_port_to_odp_port(port);
+ if (odp_port != ctx->flow.in_port) {
add_output_action(ctx, odp_port);
}
break;
}
}
+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)
+{
+ size_t n = ctx->out->n_actions;
+ if (n > 0 && ctx->out->actions[n - 1].type == ODPAT_POP_PRIORITY) {
+ ctx->out->n_actions--;
+ }
+}
+
+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) {
+ odp_port = ofp_port_to_odp_port(ofp_port);
+ } else {
+ odp_port = ctx->flow.in_port;
+ }
+
+ /* Add ODP actions. */
+ remove_pop_action(ctx);
+ odp_actions_add(ctx->out, ODPAT_SET_PRIORITY)->priority.priority
+ = priority;
+ add_output_action(ctx, odp_port);
+ odp_actions_add(ctx->out, ODPAT_POP_PRIORITY);
+
+ /* 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_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;
+ union odp_action *oa;
int subtype = ntohs(nah->subtype);
assert(nah->vendor == htonl(NX_VENDOR_ID));
xlate_table_action(ctx, ofp_port_to_odp_port(ntohs(nar->in_port)));
break;
+ case NXAST_SET_TUNNEL:
+ nast = (const struct nx_action_set_tunnel *) nah;
+ oa = odp_actions_add(ctx->out, ODPAT_SET_TUNNEL);
+ ctx->flow.tun_id = oa->tunnel.tun_id = nast->tun_id;
+ break;
+
+ case NXAST_DROP_SPOOFED_ARP:
+ if (ctx->flow.dl_type == htons(ETH_TYPE_ARP)) {
+ odp_actions_add(ctx->out, ODPAT_DROP_SPOOFED_ARP);
+ }
+ 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. */
+
default:
VLOG_DBG_RL(&rl, "unknown Nicira action type %"PRIu16, subtype);
break;
const union ofp_action *ia;
const struct ofport *port;
- port = port_array_get(&ctx->ofproto->ports, ctx->flow->in_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)
+ port->opp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp)
? OFPPC_NO_RECV_STP : OFPPC_NO_RECV)) {
/* Drop this flow. */
return;
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;
+ ctx->flow.dl_vlan = 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;
+ ctx->flow.dl_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);
+ ctx->flow.dl_vlan = htons(OFP_VLAN_NONE);
+ ctx->flow.dl_vlan_pcp = 0;
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);
+ memcpy(ctx->flow.dl_src,
+ ((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);
+ memcpy(ctx->flow.dl_dst,
+ ((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;
+ ctx->flow.nw_src = oa->nw_addr.nw_addr = ia->nw_addr.nw_addr;
break;
case OFPAT_SET_NW_DST:
oa = odp_actions_add(ctx->out, ODPAT_SET_NW_DST);
- oa->nw_addr.nw_addr = ia->nw_addr.nw_addr;
+ ctx->flow.nw_dst = oa->nw_addr.nw_addr = ia->nw_addr.nw_addr;
break;
case OFPAT_SET_NW_TOS:
oa = odp_actions_add(ctx->out, ODPAT_SET_NW_TOS);
- oa->nw_tos.nw_tos = ia->nw_tos.nw_tos;
+ ctx->flow.nw_tos = oa->nw_tos.nw_tos = ia->nw_tos.nw_tos;
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;
+ ctx->flow.tp_src = oa->tp_port.tp_port = ia->tp_port.tp_port;
break;
case OFPAT_SET_TP_DST:
oa = odp_actions_add(ctx->out, ODPAT_SET_TP_DST);
- oa->tp_port.tp_port = ia->tp_port.tp_port;
+ ctx->flow.tp_dst = 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;
+ case OFPAT_ENQUEUE:
+ xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia);
+ break;
+
default:
VLOG_DBG_RL(&rl, "unknown action type %"PRIu16, type);
break;
struct action_xlate_ctx ctx;
COVERAGE_INC(ofproto_ofp2odp);
odp_actions_init(out);
- ctx.flow = flow;
+ ctx.flow = *flow;
ctx.recurse = 0;
ctx.ofproto = ofproto;
ctx.packet = packet;
ctx.may_set_up_flow = true;
ctx.nf_output_iface = NF_OUT_DROP;
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. */
*nf_output_iface = ctx.nf_output_iface;
}
if (odp_actions_overflow(out)) {
+ COVERAGE_INC(odp_overflow);
odp_actions_init(out);
return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_TOO_MANY);
}
return 0;
}
+/* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
+ * error message code (composed with ofp_mkerr()) for the caller to propagate
+ * upward. Otherwise, returns 0.
+ *
+ * 'oh' is used to make log messages more informative. */
+static int
+reject_slave_controller(struct ofconn *ofconn, const struct ofp_header *oh)
+{
+ if (ofconn->type == OFCONN_PRIMARY && ofconn->role == NX_ROLE_SLAVE) {
+ static struct vlog_rate_limit perm_rl = VLOG_RATE_LIMIT_INIT(1, 5);
+ char *type_name;
+
+ type_name = ofp_message_type_to_string(oh->type);
+ VLOG_WARN_RL(&perm_rl, "rejecting %s message from slave controller",
+ type_name);
+ free(type_name);
+
+ return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM);
+ } else {
+ return 0;
+ }
+}
+
static int
handle_packet_out(struct ofproto *p, struct ofconn *ofconn,
struct ofp_header *oh)
flow_t flow;
int error;
+ error = reject_slave_controller(ofconn, oh);
+ if (error) {
+ return error;
+ }
+
error = check_ofp_packet_out(oh, &payload, &n_actions, p->max_ports);
if (error) {
return error;
buffer = NULL;
}
- flow_extract(&payload, ofp_port_to_odp_port(ntohs(opo->in_port)), &flow);
+ flow_extract(&payload, 0, 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, NULL);
if (error) {
}
static int
-handle_port_mod(struct ofproto *p, struct ofp_header *oh)
+handle_port_mod(struct ofproto *p, struct ofconn *ofconn,
+ struct ofp_header *oh)
{
const struct ofp_port_mod *opm;
struct ofport *port;
int error;
+ error = reject_slave_controller(ofconn, oh);
+ if (error) {
+ return error;
+ }
error = check_ofp_message(oh, OFPT_PORT_MOD, sizeof *opm);
if (error) {
return error;
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 ofpbuf *msg;
struct odp_stats dpstats;
int n_exact, n_subrules, n_wild;
+ struct rule *rule;
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);
+ CLASSIFIER_FOR_EACH_EXACT_RULE (rule, struct rule, cr, &p->cls) {
+ if (rule->super) {
+ n_subrules++;
+ }
+ }
n_exact = classifier_count_exact(&p->cls) - n_subrules;
n_wild = classifier_count(&p->cls) - classifier_count_exact(&p->cls);
memset(ots, 0, sizeof *ots);
ots->table_id = TABLEID_CLASSIFIER;
strcpy(ots->name, "classifier");
- ots->wildcards = htonl(OFPFW_ALL);
+ ots->wildcards = p->tun_id_from_cookie ? htonl(OVSFW_ALL)
+ : htonl(OFPFW_ALL);
ots->max_entries = htonl(65536);
ots->active_count = htonl(n_wild);
ots->lookup_count = htonll(0); /* XXX */
}
static void
-append_port_stat(struct ofport *port, uint16_t port_no, struct ofconn *ofconn,
- struct ofpbuf *msg)
+append_port_stat(struct ofport *port, uint16_t port_no, struct ofconn *ofconn,
+ struct ofpbuf **msgp)
{
struct netdev_stats stats;
struct ofp_port_stats *ops;
- /* Intentionally ignore return value, since errors will set
- * 'stats' to all-1s, which is correct for OpenFlow, and
+ /* 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 = append_stats_reply(sizeof *ops, ofconn, msgp);
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);
msg = start_stats_reply(osr, sizeof *ops * 16);
if (psr->port_no != htons(OFPP_NONE)) {
- port = port_array_get(&p->ports,
+ port = port_array_get(&p->ports,
ofp_port_to_odp_port(ntohs(psr->port_no)));
if (port) {
- append_port_stat(port, ntohs(psr->port_no), ofconn, msg);
+ append_port_stat(port, ntohs(psr->port_no), ofconn, &msg);
}
} else {
PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
- append_port_stat(port, port_no, ofconn, msg);
+ append_port_stat(port, port_no, ofconn, &msg);
}
}
odp_flows[0].key = rule->cr.flow;
}
- /* Fetch up-to-date statistics from the datapath and add them in. */ */
+ /* Fetch up-to-date statistics from the datapath and add them in. */
if (!dpif_flow_get_multiple(p->dpif, odp_flows, n_odp_flows)) {
size_t i;
for (i = 0; i < n_odp_flows; i++) {
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);
+ flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards,
+ cbdata->ofproto->tun_id_from_cookie, &ofs->match);
ofs->duration_sec = htonl(sec);
ofs->duration_nsec = htonl(msec * 1000000);
ofs->cookie = rule->flow_cookie;
cbdata.ofconn = ofconn;
cbdata.out_port = fsr->out_port;
cbdata.msg = start_stats_reply(osr, 1024);
- cls_rule_from_match(&target, &fsr->match, 0);
+ cls_rule_from_match(&fsr->match, 0, false, 0, &target);
classifier_for_each_match(&p->cls, &target,
table_id_to_include(fsr->table_id),
flow_stats_cb, &cbdata);
}
query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
- flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, &match);
+ flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards,
+ cbdata->ofproto->tun_id_from_cookie, &match);
ds_put_format(results, "duration=%llds, ",
(time_msec() - rule->created) / 1000);
ds_put_cstr(results, "\n");
}
-/* Adds a pretty-printed description of all flows to 'results', including
+/* Adds a pretty-printed description of all flows to 'results', including
* those marked hidden by secchan (e.g., by in-band control). */
void
ofproto_get_all_flows(struct ofproto *p, struct ds *results)
struct flow_stats_ds_cbdata cbdata;
memset(&match, 0, sizeof match);
- match.wildcards = htonl(OFPFW_ALL);
+ match.wildcards = htonl(OVSFW_ALL);
cbdata.ofproto = p;
cbdata.results = results;
- cls_rule_from_match(&target, &match, 0);
+ cls_rule_from_match(&match, 0, false, 0, &target);
classifier_for_each_match(&p->cls, &target, CLS_INC_ALL,
flow_stats_ds_cb, &cbdata);
}
cbdata.packet_count = 0;
cbdata.byte_count = 0;
cbdata.n_flows = 0;
- cls_rule_from_match(&target, &asr->match, 0);
+ cls_rule_from_match(&asr->match, 0, false, 0, &target);
classifier_for_each_match(&p->cls, &target,
table_id_to_include(asr->table_id),
aggregate_stats_cb, &cbdata);
return 0;
}
+struct queue_stats_cbdata {
+ struct ofconn *ofconn;
+ struct ofpbuf *msg;
+ uint16_t port_no;
+};
+
+static void
+put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id,
+ const struct netdev_queue_stats *stats)
+{
+ struct ofp_queue_stats *reply;
+
+ reply = append_stats_reply(sizeof *reply, cbdata->ofconn, &cbdata->msg);
+ reply->port_no = htons(cbdata->port_no);
+ memset(reply->pad, 0, sizeof reply->pad);
+ reply->queue_id = htonl(queue_id);
+ reply->tx_bytes = htonll(stats->tx_bytes);
+ reply->tx_packets = htonll(stats->tx_packets);
+ reply->tx_errors = htonll(stats->tx_errors);
+}
+
+static void
+handle_queue_stats_dump_cb(uint32_t queue_id,
+ struct netdev_queue_stats *stats,
+ void *cbdata_)
+{
+ struct queue_stats_cbdata *cbdata = cbdata_;
+
+ put_queue_stats(cbdata, queue_id, stats);
+}
+
+static void
+handle_queue_stats_for_port(struct ofport *port, uint16_t port_no,
+ uint32_t queue_id,
+ struct queue_stats_cbdata *cbdata)
+{
+ cbdata->port_no = port_no;
+ if (queue_id == OFPQ_ALL) {
+ netdev_dump_queue_stats(port->netdev,
+ handle_queue_stats_dump_cb, cbdata);
+ } else {
+ struct netdev_queue_stats stats;
+
+ netdev_get_queue_stats(port->netdev, queue_id, &stats);
+ put_queue_stats(cbdata, queue_id, &stats);
+ }
+}
+
+static int
+handle_queue_stats_request(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofp_stats_request *osr,
+ size_t arg_size)
+{
+ struct ofp_queue_stats_request *qsr;
+ struct queue_stats_cbdata cbdata;
+ struct ofport *port;
+ unsigned int port_no;
+ uint32_t queue_id;
+
+ if (arg_size != sizeof *qsr) {
+ return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
+ }
+ qsr = (struct ofp_queue_stats_request *) osr->body;
+
+ COVERAGE_INC(ofproto_queue_req);
+
+ cbdata.ofconn = ofconn;
+ cbdata.msg = start_stats_reply(osr, 128);
+
+ port_no = ntohs(qsr->port_no);
+ queue_id = ntohl(qsr->queue_id);
+ if (port_no == OFPP_ALL) {
+ PORT_ARRAY_FOR_EACH (port, &ofproto->ports, port_no) {
+ handle_queue_stats_for_port(port, port_no, queue_id, &cbdata);
+ }
+ } else if (port_no < ofproto->max_ports) {
+ port = port_array_get(&ofproto->ports, port_no);
+ if (port) {
+ handle_queue_stats_for_port(port, port_no, queue_id, &cbdata);
+ }
+ } else {
+ ofpbuf_delete(cbdata.msg);
+ return ofp_mkerr(OFPET_QUEUE_OP_FAILED, OFPQOFC_BAD_PORT);
+ }
+ queue_tx(cbdata.msg, ofconn, ofconn->reply_counter);
+
+ return 0;
+}
+
static int
handle_stats_request(struct ofproto *p, struct ofconn *ofconn,
struct ofp_header *oh)
case OFPST_PORT:
return handle_port_stats_request(p, ofconn, osr, arg_size);
+ case OFPST_QUEUE:
+ return handle_queue_stats_request(p, ofconn, osr, arg_size);
+
case OFPST_VENDOR:
return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
update_time(ofproto, rule, stats);
rule->packet_count += stats->n_packets;
rule->byte_count += stats->n_bytes;
- netflow_flow_update_flags(&rule->nf_flow, stats->ip_tos,
- stats->tcp_flags);
+ netflow_flow_update_flags(&rule->nf_flow, stats->tcp_flags);
}
}
+/* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
+ * in which no matching flow already exists in the flow table.
+ *
+ * Adds the flow specified by 'ofm', which is followed by 'n_actions'
+ * ofp_actions, to 'p''s flow table. Returns 0 on success or an OpenFlow error
+ * code as encoded by ofp_mkerr() on failure.
+ *
+ * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
+ * if any. */
static int
add_flow(struct ofproto *p, struct ofconn *ofconn,
- struct ofp_flow_mod *ofm, size_t n_actions)
+ const struct ofp_flow_mod *ofm, size_t n_actions)
{
struct ofpbuf *packet;
struct rule *rule;
flow_t flow;
uint32_t wildcards;
- flow_from_match(&flow, &wildcards, &ofm->match);
+ flow_from_match(&ofm->match, p->tun_id_from_cookie, ofm->cookie,
+ &flow, &wildcards);
if (classifier_rule_overlaps(&p->cls, &flow, wildcards,
ntohs(ofm->priority))) {
return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP);
n_actions, ntohs(ofm->idle_timeout),
ntohs(ofm->hard_timeout), ofm->cookie,
ofm->flags & htons(OFPFF_SEND_FLOW_REM));
- cls_rule_from_match(&rule->cr, &ofm->match, ntohs(ofm->priority));
+ cls_rule_from_match(&ofm->match, ntohs(ofm->priority),
+ p->tun_id_from_cookie, ofm->cookie, &rule->cr);
error = 0;
if (ofm->buffer_id != htonl(UINT32_MAX)) {
}
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)
+static struct rule *
+find_flow_strict(struct ofproto *p, const struct ofp_flow_mod *ofm)
{
- if (rule_is_hidden(rule)) {
- return 0;
- }
+ uint32_t wildcards;
+ flow_t flow;
- if (command == OFPFC_DELETE) {
- long long int now = time_msec();
- send_flow_removed(p, rule, now, OFPRR_DELETE);
- rule_remove(p, rule);
- } else {
- size_t actions_len = n_actions * sizeof *rule->actions;
+ flow_from_match(&ofm->match, p->tun_id_from_cookie, ofm->cookie,
+ &flow, &wildcards);
+ return rule_from_cls_rule(classifier_find_rule_exactly(
+ &p->cls, &flow, wildcards,
+ ntohs(ofm->priority)));
+}
- if (n_actions == rule->n_actions
- && !memcmp(ofm->actions, rule->actions, actions_len))
- {
- return 0;
- }
+static int
+send_buffered_packet(struct ofproto *ofproto, struct ofconn *ofconn,
+ struct rule *rule, const struct ofp_flow_mod *ofm)
+{
+ struct ofpbuf *packet;
+ uint16_t in_port;
+ flow_t flow;
+ int error;
- free(rule->actions);
- rule->actions = xmemdup(ofm->actions, actions_len);
- rule->n_actions = n_actions;
- rule->flow_cookie = ofm->cookie;
+ if (ofm->buffer_id == htonl(UINT32_MAX)) {
+ return 0;
+ }
- if (rule->cr.wc.wildcards) {
- COVERAGE_INC(ofproto_mod_wc_flow);
- p->need_revalidate = true;
- } else {
- rule_update_actions(p, rule);
- }
+ error = pktbuf_retrieve(ofconn->pktbuf, ntohl(ofm->buffer_id),
+ &packet, &in_port);
+ if (error) {
+ return error;
}
+ flow_extract(packet, 0, in_port, &flow);
+ rule_execute(ofproto, rule, packet, &flow);
+
return 0;
}
+\f
+/* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
-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;
+struct modify_flows_cbdata {
+ struct ofproto *ofproto;
+ const struct ofp_flow_mod *ofm;
+ size_t n_actions;
+ struct rule *match;
+};
- flow_from_match(&flow, &wildcards, &ofm->match);
- rule = rule_from_cls_rule(classifier_find_rule_exactly(
- &p->cls, &flow, wildcards,
- ntohs(ofm->priority)));
+static int modify_flow(struct ofproto *, const struct ofp_flow_mod *,
+ size_t n_actions, struct rule *);
+static void modify_flows_cb(struct cls_rule *, void *cbdata_);
- if (rule) {
- if (command == OFPFC_DELETE
- && ofm->out_port != htons(OFPP_NONE)
- && !rule_has_out_port(rule, ofm->out_port)) {
- return 0;
- }
+/* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as
+ * encoded by ofp_mkerr() on failure.
+ *
+ * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
+ * if any. */
+static int
+modify_flows_loose(struct ofproto *p, struct ofconn *ofconn,
+ const struct ofp_flow_mod *ofm, size_t n_actions)
+{
+ struct modify_flows_cbdata cbdata;
+ struct cls_rule target;
+
+ cbdata.ofproto = p;
+ cbdata.ofm = ofm;
+ cbdata.n_actions = n_actions;
+ cbdata.match = NULL;
+
+ cls_rule_from_match(&ofm->match, 0, p->tun_id_from_cookie, ofm->cookie,
+ &target);
- modify_flow(p, ofm, n_actions, command, rule);
+ classifier_for_each_match(&p->cls, &target, CLS_INC_ALL,
+ modify_flows_cb, &cbdata);
+ if (cbdata.match) {
+ /* This credits the packet to whichever flow happened to happened to
+ * match last. That's weird. Maybe we should do a lookup for the
+ * flow that actually matches the packet? Who knows. */
+ send_buffered_packet(p, ofconn, cbdata.match, ofm);
+ return 0;
+ } else {
+ return add_flow(p, ofconn, ofm, n_actions);
}
- 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;
-};
+/* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
+ * code as encoded by ofp_mkerr() on failure.
+ *
+ * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
+ * if any. */
+static int
+modify_flow_strict(struct ofproto *p, struct ofconn *ofconn,
+ struct ofp_flow_mod *ofm, size_t n_actions)
+{
+ struct rule *rule = find_flow_strict(p, ofm);
+ if (rule && !rule_is_hidden(rule)) {
+ modify_flow(p, ofm, n_actions, rule);
+ return send_buffered_packet(p, ofconn, rule, ofm);
+ } else {
+ return add_flow(p, ofconn, ofm, n_actions);
+ }
+}
+/* Callback for modify_flows_loose(). */
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;
+ if (!rule_is_hidden(rule)) {
+ cbdata->match = rule;
+ modify_flow(cbdata->ofproto, cbdata->ofm, cbdata->n_actions, rule);
}
-
- modify_flow(cbdata->ofproto, cbdata->ofm, cbdata->n_actions,
- cbdata->command, rule);
}
+/* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has
+ * been identified as a flow in 'p''s flow table to be modified, by changing
+ * the rule's actions to match those in 'ofm' (which is followed by 'n_actions'
+ * ofp_action[] structures). */
static int
-modify_flows_loose(struct ofproto *p, const struct ofp_flow_mod *ofm,
- size_t n_actions, uint16_t command)
+modify_flow(struct ofproto *p, const struct ofp_flow_mod *ofm,
+ size_t n_actions, struct rule *rule)
{
- struct modify_flows_cbdata cbdata;
+ size_t actions_len = n_actions * sizeof *rule->actions;
+
+ rule->flow_cookie = ofm->cookie;
+
+ /* If the actions are the same, do nothing. */
+ if (n_actions == rule->n_actions
+ && !memcmp(ofm->actions, rule->actions, actions_len))
+ {
+ return 0;
+ }
+
+ /* Replace actions. */
+ free(rule->actions);
+ rule->actions = xmemdup(ofm->actions, actions_len);
+ rule->n_actions = n_actions;
+
+ /* Make sure that the datapath gets updated properly. */
+ if (rule->cr.wc.wildcards) {
+ COVERAGE_INC(ofproto_mod_wc_flow);
+ p->need_revalidate = true;
+ } else {
+ rule_update_actions(p, rule);
+ }
+
+ return 0;
+}
+\f
+/* OFPFC_DELETE implementation. */
+
+struct delete_flows_cbdata {
+ struct ofproto *ofproto;
+ uint16_t out_port;
+};
+
+static void delete_flows_cb(struct cls_rule *, void *cbdata_);
+static void delete_flow(struct ofproto *, struct rule *, uint16_t out_port);
+
+/* Implements OFPFC_DELETE. */
+static void
+delete_flows_loose(struct ofproto *p, const struct ofp_flow_mod *ofm)
+{
+ struct delete_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;
+ cbdata.out_port = ofm->out_port;
- cls_rule_from_match(&target, &ofm->match, 0);
+ cls_rule_from_match(&ofm->match, 0, p->tun_id_from_cookie, ofm->cookie,
+ &target);
classifier_for_each_match(&p->cls, &target, CLS_INC_ALL,
- modify_flows_cb, &cbdata);
- return 0;
+ delete_flows_cb, &cbdata);
+}
+
+/* Implements OFPFC_DELETE_STRICT. */
+static void
+delete_flow_strict(struct ofproto *p, struct ofp_flow_mod *ofm)
+{
+ struct rule *rule = find_flow_strict(p, ofm);
+ if (rule) {
+ delete_flow(p, rule, ofm->out_port);
+ }
+}
+
+/* Callback for delete_flows_loose(). */
+static void
+delete_flows_cb(struct cls_rule *rule_, void *cbdata_)
+{
+ struct rule *rule = rule_from_cls_rule(rule_);
+ struct delete_flows_cbdata *cbdata = cbdata_;
+
+ delete_flow(cbdata->ofproto, rule, cbdata->out_port);
}
+/* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has
+ * been identified as a flow to delete from 'p''s flow table, by deleting the
+ * flow and sending out a OFPT_FLOW_REMOVED message to any interested
+ * controller.
+ *
+ * Will not delete 'rule' if it is hidden. Will delete 'rule' only if
+ * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the
+ * specified 'out_port'. */
+static void
+delete_flow(struct ofproto *p, struct rule *rule, uint16_t out_port)
+{
+ if (rule_is_hidden(rule)) {
+ return;
+ }
+
+ if (out_port != htons(OFPP_NONE) && !rule_has_out_port(rule, out_port)) {
+ return;
+ }
+
+ send_flow_removed(p, rule, time_msec(), OFPRR_DELETE);
+ rule_remove(p, rule);
+}
+\f
static int
handle_flow_mod(struct ofproto *p, struct ofconn *ofconn,
struct ofp_flow_mod *ofm)
{
+ struct ofp_match orig_match;
size_t n_actions;
int error;
+ error = reject_slave_controller(ofconn, &ofm->header);
+ if (error) {
+ return error;
+ }
error = check_ofp_message_array(&ofm->header, OFPT_FLOW_MOD, sizeof *ofm,
sizeof *ofm->actions, &n_actions);
if (error) {
return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_ALL_TABLES_FULL);
}
+ /* Normalize ofp->match. If normalization actually changes anything, then
+ * log the differences. */
+ ofm->match.pad1[0] = ofm->match.pad2[0] = 0;
+ orig_match = ofm->match;
normalize_match(&ofm->match);
+ if (memcmp(&ofm->match, &orig_match, sizeof orig_match)) {
+ static struct vlog_rate_limit normal_rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ if (!VLOG_DROP_INFO(&normal_rl)) {
+ char *old = ofp_match_to_literal_string(&orig_match);
+ char *new = ofp_match_to_literal_string(&ofm->match);
+ VLOG_INFO("%s: normalization changed ofp_match, details:",
+ rconn_get_name(ofconn->rconn));
+ VLOG_INFO(" pre: %s", old);
+ VLOG_INFO("post: %s", new);
+ free(old);
+ free(new);
+ }
+ }
+
if (!ofm->match.wildcards) {
ofm->priority = htons(UINT16_MAX);
}
return add_flow(p, ofconn, ofm, n_actions);
case OFPFC_MODIFY:
- return modify_flows_loose(p, ofm, n_actions, OFPFC_MODIFY);
+ return modify_flows_loose(p, ofconn, ofm, n_actions);
case OFPFC_MODIFY_STRICT:
- return modify_flows_strict(p, ofm, n_actions, OFPFC_MODIFY);
+ return modify_flow_strict(p, ofconn, ofm, n_actions);
case OFPFC_DELETE:
- return modify_flows_loose(p, ofm, n_actions, OFPFC_DELETE);
+ delete_flows_loose(p, ofm);
+ return 0;
case OFPFC_DELETE_STRICT:
- return modify_flows_strict(p, ofm, n_actions, OFPFC_DELETE);
+ delete_flow_strict(p, ofm);
+ return 0;
default:
return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND);
}
}
+static int
+handle_tun_id_from_cookie(struct ofproto *p, struct nxt_tun_id_cookie *msg)
+{
+ int error;
+
+ error = check_ofp_message(&msg->header, OFPT_VENDOR, sizeof *msg);
+ if (error) {
+ return error;
+ }
+
+ p->tun_id_from_cookie = !!msg->set;
+ return 0;
+}
+
+static int
+handle_role_request(struct ofproto *ofproto,
+ struct ofconn *ofconn, struct nicira_header *msg)
+{
+ struct nx_role_request *nrr;
+ struct nx_role_request *reply;
+ struct ofpbuf *buf;
+ uint32_t role;
+
+ if (ntohs(msg->header.length) != sizeof *nrr) {
+ VLOG_WARN_RL(&rl, "received role request of length %u (expected %zu)",
+ ntohs(msg->header.length), sizeof *nrr);
+ return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
+ }
+ nrr = (struct nx_role_request *) msg;
+
+ if (ofconn->type != OFCONN_PRIMARY) {
+ VLOG_WARN_RL(&rl, "ignoring role request on non-controller "
+ "connection");
+ return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM);
+ }
+
+ role = ntohl(nrr->role);
+ if (role != NX_ROLE_OTHER && role != NX_ROLE_MASTER
+ && role != NX_ROLE_SLAVE) {
+ VLOG_WARN_RL(&rl, "received request for unknown role %"PRIu32, role);
+
+ /* There's no good error code for this. */
+ return ofp_mkerr(OFPET_BAD_REQUEST, -1);
+ }
+
+ if (role == NX_ROLE_MASTER) {
+ struct ofconn *other;
+
+ HMAP_FOR_EACH (other, struct ofconn, hmap_node,
+ &ofproto->controllers) {
+ if (other->role == NX_ROLE_MASTER) {
+ other->role = NX_ROLE_SLAVE;
+ }
+ }
+ }
+ ofconn->role = role;
+
+ reply = make_openflow_xid(sizeof *reply, OFPT_VENDOR, msg->header.xid,
+ &buf);
+ reply->nxh.vendor = htonl(NX_VENDOR_ID);
+ reply->nxh.subtype = htonl(NXT_ROLE_REPLY);
+ reply->role = htonl(role);
+ queue_tx(buf, ofconn, ofconn->reply_counter);
+
+ return 0;
+}
+
static int
handle_vendor(struct ofproto *p, struct ofconn *ofconn, void *msg)
{
struct nicira_header *nh;
if (ntohs(ovh->header.length) < sizeof(struct ofp_vendor_header)) {
+ VLOG_WARN_RL(&rl, "received vendor message of length %u "
+ "(expected at least %zu)",
+ ntohs(ovh->header.length), sizeof(struct ofp_vendor_header));
return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
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)) {
+ VLOG_WARN_RL(&rl, "received Nicira vendor message of length %u "
+ "(expected at least %zu)",
+ ntohs(ovh->header.length), sizeof(struct nicira_header));
return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
}
case NXT_STATUS_REQUEST:
return switch_status_handle_request(p->switch_status, ofconn->rconn,
msg);
+
+ case NXT_TUN_ID_FROM_COOKIE:
+ return handle_tun_id_from_cookie(p, msg);
+
+ case NXT_ROLE_REQUEST:
+ return handle_role_request(p, ofconn, msg);
}
return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
break;
case OFPT_PORT_MOD:
- error = handle_port_mod(p, oh);
+ error = handle_port_mod(p, ofconn, oh);
break;
case OFPT_FLOW_MOD:
handle_odp_miss_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;
payload.data = msg + 1;
payload.size = msg->length - sizeof *msg;
- flow_extract(&payload, msg->port, &flow);
+ flow_extract(&payload, msg->arg, msg->port, &flow);
/* Check with in-band control to see if this packet should be sent
* to the local port regardless of the flow table. */
}
COVERAGE_INC(ofproto_packet_in);
- pinsched_send(p->miss_sched, in_port, packet, send_packet_in_miss, p);
+ send_packet_in(p, packet);
return;
}
}
}
- rule_execute(p, rule, &payload, &flow);
- rule_reinstall(p, rule);
-
- if (rule->super && rule->super->cr.priority == FAIL_OPEN_PRIORITY
- && rconn_is_connected(p->controller->rconn)) {
+ if (rule->super && rule->super->cr.priority == FAIL_OPEN_PRIORITY) {
/*
* Extra-special case for fail-open mode.
*
*
* See the top-level comment in fail-open.c for more information.
*/
- pinsched_send(p->miss_sched, in_port, packet, send_packet_in_miss, p);
- } else {
- ofpbuf_delete(packet);
+ send_packet_in(p, ofpbuf_clone_with_headroom(packet,
+ DPIF_RECV_MSG_PADDING));
}
+
+ ofpbuf_pull(packet, sizeof *msg);
+ rule_execute(p, rule, packet, &flow);
+ rule_reinstall(p, rule);
}
static void
switch (msg->type) {
case _ODPL_ACTION_NR:
COVERAGE_INC(ofproto_ctlr_action);
- pinsched_send(p->action_sched, odp_port_to_ofp_port(msg->port), packet,
- send_packet_in_action, p);
+ send_packet_in(p, packet);
break;
case _ODPL_SFLOW_NR:
}
}
\f
+/* Flow expiration. */
+
+struct expire_cbdata {
+ struct ofproto *ofproto;
+};
+
+static void ofproto_update_used(struct ofproto *);
+static void rule_expire(struct cls_rule *, void *cbdata);
+
+/* This function is called periodically by ofproto_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. */
+static void
+ofproto_expire(struct ofproto *ofproto)
+{
+ struct expire_cbdata cbdata;
+
+ /* Update 'used' for each flow in the datapath. */
+ ofproto_update_used(ofproto);
+
+ /* Expire idle flows.
+ *
+ * A wildcarded flow is idle only when all of its subrules have expired due
+ * to becoming idle, so iterate through the exact-match flows first. */
+ cbdata.ofproto = ofproto;
+ classifier_for_each(&ofproto->cls, CLS_INC_EXACT, rule_expire, &cbdata);
+ classifier_for_each(&ofproto->cls, CLS_INC_WILD, rule_expire, &cbdata);
+
+ /* 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 (ofproto->ofhooks->account_checkpoint_cb) {
+ ofproto->ofhooks->account_checkpoint_cb(ofproto->aux);
+ }
+}
+
+/* Update 'used' member of each flow currently installed into the datapath. */
+static void
+ofproto_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) {
+ update_time(p, rule, &f->stats);
+ rule_account(p, rule, f->stats.n_bytes);
+ } else {
+ /* There's a flow in the datapath that we know nothing about.
+ * Delete it. */
+ COVERAGE_INC(ofproto_unexpected_rule);
+ dpif_flow_del(p->dpif, f);
+ }
+
+ }
+ free(flows);
+}
+
+static void
+rule_active_timeout(struct ofproto *ofproto, struct rule *rule)
+{
+ if (ofproto->netflow && !is_controller_rule(rule) &&
+ netflow_active_timeout_expired(ofproto->netflow, &rule->nf_flow)) {
+ struct ofexpired expired;
+ struct odp_flow odp_flow;
+
+ /* Get updated flow stats.
+ *
+ * XXX We could avoid this call entirely if (1) ofproto_update_used()
+ * updated TCP flags and (2) the dpif_flow_list_all() in
+ * ofproto_update_used() zeroed TCP flags. */
+ memset(&odp_flow, 0, sizeof odp_flow);
+ if (rule->installed) {
+ odp_flow.key = rule->cr.flow;
+ odp_flow.flags = ODPFF_ZERO_TCP_FLAGS;
+ dpif_flow_get(ofproto->dpif, &odp_flow);
+
+ if (odp_flow.stats.n_packets) {
+ update_time(ofproto, rule, &odp_flow.stats);
+ netflow_flow_update_flags(&rule->nf_flow,
+ odp_flow.stats.tcp_flags);
+ }
+ }
+
+ expired.flow = rule->cr.flow;
+ expired.packet_count = rule->packet_count +
+ odp_flow.stats.n_packets;
+ expired.byte_count = rule->byte_count + odp_flow.stats.n_bytes;
+ expired.used = rule->used;
+
+ netflow_expire(ofproto->netflow, &rule->nf_flow, &expired);
+ }
+}
+
+/* If 'cls_rule' is an OpenFlow rule, that has expired according to OpenFlow
+ * rules, then delete it entirely.
+ *
+ * If 'cls_rule' is a subrule, that has not been used recently, remove it from
+ * the datapath and fold its statistics back into its super-rule.
+ *
+ * (This is a callback function for classifier_for_each().) */
+static void
+rule_expire(struct cls_rule *cls_rule, void *cbdata_)
+{
+ struct expire_cbdata *cbdata = cbdata_;
+ struct ofproto *ofproto = cbdata->ofproto;
+ struct rule *rule = rule_from_cls_rule(cls_rule);
+ long long int hard_expire, idle_expire, expire, now;
+
+ /* Calculate OpenFlow expiration times for 'rule'. */
+ 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);
+
+ now = time_msec();
+ if (now < expire) {
+ /* 'rule' has not expired according to OpenFlow rules. */
+ if (!rule->cr.wc.wildcards) {
+ if (now >= rule->used + 5000) {
+ /* This rule is idle, so drop it to free up resources. */
+ if (rule->super) {
+ /* It's not part of the OpenFlow flow table, so we can
+ * delete it entirely and fold its statistics into its
+ * super-rule. */
+ rule_remove(ofproto, rule);
+ } else {
+ /* It is part of the OpenFlow flow table, so we have to
+ * keep the rule but we can at least uninstall it from the
+ * datapath. */
+ rule_uninstall(ofproto, rule);
+ }
+ } else {
+ /* Send NetFlow active timeout if appropriate. */
+ rule_active_timeout(cbdata->ofproto, rule);
+ }
+ }
+ } else {
+ /* 'rule' has expired according to OpenFlow rules. */
+ COVERAGE_INC(ofproto_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 subrules
+ * left.) */
+ if (rule->cr.wc.wildcards) {
+ struct rule *subrule, *next;
+ LIST_FOR_EACH_SAFE (subrule, next, struct rule, list,
+ &rule->list) {
+ rule_remove(cbdata->ofproto, subrule);
+ }
+ } else {
+ rule_uninstall(cbdata->ofproto, rule);
+ }
+
+ /* Get rid of the rule. */
+ if (!rule_is_hidden(rule)) {
+ send_flow_removed(cbdata->ofproto, rule, now,
+ (now >= hard_expire
+ ? OFPRR_HARD_TIMEOUT : OFPRR_IDLE_TIMEOUT));
+ }
+ rule_remove(cbdata->ofproto, rule);
+ }
+}
+\f
static void
revalidate_cb(struct cls_rule *sub_, void *cbdata_)
{
}
static struct ofpbuf *
-compose_flow_removed(const struct rule *rule, long long int now, uint8_t reason)
+compose_flow_removed(struct ofproto *p, const struct rule *rule,
+ long long int now, uint8_t reason)
{
struct ofp_flow_removed *ofr;
struct ofpbuf *buf;
- long long int tdiff = time_msec() - rule->created;
+ long long int tdiff = now - rule->created;
uint32_t sec = tdiff / 1000;
uint32_t msec = tdiff - (sec * 1000);
ofr = make_openflow(sizeof *ofr, OFPT_FLOW_REMOVED, &buf);
- flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, &ofr->match);
+ flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, p->tun_id_from_cookie,
+ &ofr->match);
ofr->cookie = rule->flow_cookie;
ofr->priority = htons(rule->cr.priority);
ofr->reason = reason;
return buf;
}
-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
send_flow_removed(struct ofproto *p, struct rule *rule,
long long int now, uint8_t reason)
struct ofconn *prev;
struct ofpbuf *buf = NULL;
+ if (!rule->send_flow_removed) {
+ return;
+ }
+
/* 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
prev = NULL;
LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
- if (rule->send_flow_removed && rconn_is_connected(ofconn->rconn)) {
+ if (rconn_is_connected(ofconn->rconn)
+ && ofconn_receives_async_msgs(ofconn)) {
if (prev) {
queue_tx(ofpbuf_clone(buf), prev, prev->reply_counter);
} else {
- buf = compose_flow_removed(rule, now, reason);
+ buf = compose_flow_removed(p, rule, now, reason);
}
prev = ofconn;
}
}
}
-
+/* pinsched callback for sending 'packet' on 'ofconn'. */
static void
-expire_rule(struct cls_rule *cls_rule, void *p_)
+do_send_packet_in(struct ofpbuf *packet, void *ofconn_)
{
- 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);
-
- now = time_msec();
- if (now < expire) {
- if (rule->installed && now >= rule->used + 5000) {
- uninstall_idle_flow(p, rule);
- } else if (!rule->cr.wc.wildcards) {
- active_timeout(p, rule);
- }
+ struct ofconn *ofconn = ofconn_;
- return;
- }
-
- COVERAGE_INC(ofproto_expired);
-
- /* Update stats. This code will be a no-op if the rule expired
- * due to an idle timeout. */
- if (rule->cr.wc.wildcards) {
- struct rule *subrule, *next;
- LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) {
- rule_remove(p, subrule);
- }
- } else {
- rule_uninstall(p, rule);
- }
-
- if (!rule_is_hidden(rule)) {
- send_flow_removed(p, rule, now,
- (now >= hard_expire
- ? OFPRR_HARD_TIMEOUT : OFPRR_IDLE_TIMEOUT));
- }
- rule_remove(p, rule);
+ rconn_send_with_limit(ofconn->rconn, packet,
+ ofconn->packet_in_counter, 100);
}
+/* Takes 'packet', which has been converted with do_convert_to_packet_in(), and
+ * finalizes its content for sending on 'ofconn', and passes it to 'ofconn''s
+ * packet scheduler for sending.
+ *
+ * 'max_len' specifies the maximum number of bytes of the packet to send on
+ * 'ofconn' (INT_MAX specifies no limit).
+ *
+ * If 'clone' is true, the caller retains ownership of 'packet'. Otherwise,
+ * ownership is transferred to this function. */
static void
-active_timeout(struct ofproto *ofproto, struct rule *rule)
-{
- if (ofproto->netflow && !is_controller_rule(rule) &&
- netflow_active_timeout_expired(ofproto->netflow, &rule->nf_flow)) {
- struct ofexpired expired;
- struct odp_flow odp_flow;
-
- /* Get updated flow stats. */
- memset(&odp_flow, 0, sizeof odp_flow);
- if (rule->installed) {
- odp_flow.key = rule->cr.flow;
- odp_flow.flags = ODPFF_ZERO_TCP_FLAGS;
- dpif_flow_get(ofproto->dpif, &odp_flow);
-
- if (odp_flow.stats.n_packets) {
- update_time(ofproto, rule, &odp_flow.stats);
- netflow_flow_update_flags(&rule->nf_flow, odp_flow.stats.ip_tos,
- odp_flow.stats.tcp_flags);
- }
- }
-
- expired.flow = rule->cr.flow;
- expired.packet_count = rule->packet_count +
- odp_flow.stats.n_packets;
- expired.byte_count = rule->byte_count + odp_flow.stats.n_bytes;
- expired.used = rule->used;
-
- netflow_expire(ofproto->netflow, &rule->nf_flow, &expired);
-
- /* Schedule us to send the accumulated records once we have
- * collected all of them. */
- poll_immediate_wake();
+schedule_packet_in(struct ofconn *ofconn, struct ofpbuf *packet, int max_len,
+ bool clone)
+{
+ struct ofproto *ofproto = ofconn->ofproto;
+ struct ofp_packet_in *opi = packet->data;
+ uint16_t in_port = ofp_port_to_odp_port(ntohs(opi->in_port));
+ int send_len, trim_size;
+ uint32_t buffer_id;
+
+ /* Get buffer. */
+ if (opi->reason == OFPR_ACTION) {
+ buffer_id = UINT32_MAX;
+ } else if (ofproto->fail_open && fail_open_is_active(ofproto->fail_open)) {
+ buffer_id = pktbuf_get_null();
+ } else if (!ofconn->pktbuf) {
+ buffer_id = UINT32_MAX;
+ } else {
+ struct ofpbuf payload;
+ payload.data = opi->data;
+ payload.size = packet->size - offsetof(struct ofp_packet_in, data);
+ buffer_id = pktbuf_save(ofconn->pktbuf, &payload, in_port);
}
-}
-
-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;
+ /* Figure out how much of the packet to send. */
+ send_len = ntohs(opi->total_len);
+ if (buffer_id != UINT32_MAX) {
+ send_len = MIN(send_len, ofconn->miss_send_len);
}
+ send_len = MIN(send_len, max_len);
- for (i = 0; i < n_flows; i++) {
- struct odp_flow *f = &flows[i];
- struct rule *rule;
+ /* Adjust packet length and clone if necessary. */
+ trim_size = offsetof(struct ofp_packet_in, data) + send_len;
+ if (clone) {
+ packet = ofpbuf_clone_data(packet->data, trim_size);
+ opi = packet->data;
+ } else {
+ packet->size = trim_size;
+ }
- 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 packet headers. */
+ opi->buffer_id = htonl(buffer_id);
+ update_openflow_length(packet);
- update_time(p, rule, &f->stats);
- rule_account(p, rule, f->stats.n_bytes);
- }
- free(flows);
+ /* Hand over to packet scheduler. It might immediately call into
+ * do_send_packet_in() or it might buffer it for a while (until a later
+ * call to pinsched_run()). */
+ pinsched_send(ofconn->schedulers[opi->reason], in_port,
+ packet, do_send_packet_in, ofconn);
}
-static void
-do_send_packet_in(struct ofconn *ofconn, uint32_t buffer_id,
- const struct ofpbuf *packet, int send_len)
+/* Replace struct odp_msg header in 'packet' by equivalent struct
+ * ofp_packet_in. The odp_msg must have sufficient headroom to do so (e.g. as
+ * returned by dpif_recv()).
+ *
+ * The conversion is not complete: the caller still needs to trim any unneeded
+ * payload off the end of the buffer, set the length in the OpenFlow header,
+ * and set buffer_id. Those require us to know the controller settings and so
+ * must be done on a per-controller basis.
+ *
+ * Returns the maximum number of bytes of the packet that should be sent to
+ * the controller (INT_MAX if no limit). */
+static int
+do_convert_to_packet_in(struct ofpbuf *packet)
{
struct odp_msg *msg = packet->data;
- struct ofpbuf payload;
- struct ofpbuf *opi;
+ struct ofp_packet_in *opi;
uint8_t reason;
+ uint16_t total_len;
+ uint16_t in_port;
+ int max_len;
- /* Extract packet payload from 'msg'. */
- payload.data = msg + 1;
- payload.size = msg->length - sizeof *msg;
+ /* Extract relevant header fields */
+ if (msg->type == _ODPL_ACTION_NR) {
+ reason = OFPR_ACTION;
+ max_len = msg->arg;
+ } else {
+ reason = OFPR_NO_MATCH;
+ max_len = INT_MAX;
+ }
+ total_len = msg->length - sizeof *msg;
+ in_port = odp_port_to_ofp_port(msg->port);
- /* Construct ofp_packet_in message. */
- reason = msg->type == _ODPL_ACTION_NR ? OFPR_ACTION : OFPR_NO_MATCH;
- opi = make_packet_in(buffer_id, odp_port_to_ofp_port(msg->port), reason,
- &payload, send_len);
+ /* Repurpose packet buffer by overwriting header. */
+ ofpbuf_pull(packet, sizeof(struct odp_msg));
+ opi = ofpbuf_push_zeros(packet, offsetof(struct ofp_packet_in, data));
+ opi->header.version = OFP_VERSION;
+ opi->header.type = OFPT_PACKET_IN;
+ opi->total_len = htons(total_len);
+ opi->in_port = htons(in_port);
+ opi->reason = reason;
- /* Send. */
- rconn_send_with_limit(ofconn->rconn, opi, ofconn->packet_in_counter, 100);
+ return max_len;
}
+/* Given 'packet' containing an odp_msg of type _ODPL_ACTION_NR or
+ * _ODPL_MISS_NR, sends an OFPT_PACKET_IN message to each OpenFlow controller
+ * as necessary according to their individual configurations.
+ *
+ * 'packet' must have sufficient headroom to convert it into a struct
+ * ofp_packet_in (e.g. as returned by dpif_recv()).
+ *
+ * Takes ownership of 'packet'. */
static void
-send_packet_in_action(struct ofpbuf *packet, void *p_)
+send_packet_in(struct ofproto *ofproto, struct ofpbuf *packet)
{
- 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);
-}
+ struct ofconn *ofconn, *prev;
+ int max_len;
-static void
-send_packet_in_miss(struct ofpbuf *packet, void *p_)
-{
- struct ofproto *p = p_;
- bool in_fail_open = p->fail_open && fail_open_is_active(p->fail_open);
- struct ofconn *ofconn;
- struct ofpbuf payload;
- struct odp_msg *msg;
+ max_len = do_convert_to_packet_in(packet);
- 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) {
- struct pktbuf *pb = ofconn->pktbuf;
- uint32_t buffer_id = (in_fail_open
- ? pktbuf_get_null()
- : pktbuf_save(pb, &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);
+ prev = NULL;
+ LIST_FOR_EACH (ofconn, struct ofconn, node, &ofproto->all_conns) {
+ if (ofconn_receives_async_msgs(ofconn)) {
+ if (prev) {
+ schedule_packet_in(prev, packet, max_len, true);
+ }
+ prev = ofconn;
}
}
- ofpbuf_delete(packet);
+ if (prev) {
+ schedule_packet_in(prev, packet, max_len, false);
+ } else {
+ ofpbuf_delete(packet);
+ }
}
static uint64_t
/* 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);
+ 0, flow->in_port,
+ GRAT_ARP_LOCK_NONE);
if (rev_tag) {
/* The log messages here could actually be useful in debugging,
* so keep the rate limit relatively high. */
}
/* Determine output port. */
- out_port = mac_learning_lookup_tag(ofproto->ml, flow->dl_dst, 0, tags);
+ out_port = mac_learning_lookup_tag(ofproto->ml, flow->dl_dst, 0, tags,
+ NULL);
if (out_port < 0) {
add_output_group_action(actions, DP_GROUP_FLOOD, nf_output_iface);
} else if (out_port != flow->in_port) {
git://git.onelab.eu / sliver-openvswitch.git / blobdiff