#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 <stdlib.h>
-#include "autopath.h"
#include "byte-order.h"
-#include "cfm.h"
#include "classifier.h"
#include "connmgr.h"
#include "coverage.h"
-#include "dpif.h"
#include "dynamic-string.h"
-#include "fail-open.h"
#include "hash.h"
#include "hmap.h"
-#include "in-band.h"
-#include "mac-learning.h"
-#include "multipath.h"
#include "netdev.h"
-#include "netflow.h"
-#include "netlink.h"
#include "nx-match.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 "openflow/openflow.h"
-#include "openvswitch/datapath-protocol.h"
#include "packets.h"
#include "pinsched.h"
#include "pktbuf.h"
#include "poll-loop.h"
-#include "rconn.h"
+#include "private.h"
#include "shash.h"
#include "sset.h"
-#include "stream-ssl.h"
-#include "tag.h"
-#include "timer.h"
#include "timeval.h"
#include "unaligned.h"
#include "unixctl.h"
-#include "vconn.h"
#include "vlog.h"
VLOG_DEFINE_THIS_MODULE(ofproto);
-COVERAGE_DEFINE(facet_changed_rule);
-COVERAGE_DEFINE(facet_revalidate);
-COVERAGE_DEFINE(odp_overflow);
COVERAGE_DEFINE(ofproto_agg_request);
-COVERAGE_DEFINE(ofproto_costly_flags);
-COVERAGE_DEFINE(ofproto_ctlr_action);
-COVERAGE_DEFINE(ofproto_del_rule);
COVERAGE_DEFINE(ofproto_error);
-COVERAGE_DEFINE(ofproto_expiration);
-COVERAGE_DEFINE(ofproto_expired);
COVERAGE_DEFINE(ofproto_flows_req);
COVERAGE_DEFINE(ofproto_flush);
-COVERAGE_DEFINE(ofproto_invalidated);
COVERAGE_DEFINE(ofproto_no_packet_in);
-COVERAGE_DEFINE(ofproto_ofp2odp);
-COVERAGE_DEFINE(ofproto_packet_in);
COVERAGE_DEFINE(ofproto_packet_out);
COVERAGE_DEFINE(ofproto_queue_req);
COVERAGE_DEFINE(ofproto_recv_openflow);
COVERAGE_DEFINE(ofproto_reinit_ports);
-COVERAGE_DEFINE(ofproto_unexpected_rule);
COVERAGE_DEFINE(ofproto_uninstallable);
COVERAGE_DEFINE(ofproto_update_port);
-/* Maximum depth of flow table recursion (due to NXAST_RESUBMIT actions) in a
- * flow translation. */
-#define MAX_RESUBMIT_RECURSION 16
+static void ofport_destroy__(struct ofport *);
+static void ofport_destroy(struct ofport *);
-struct rule;
+static int rule_create(struct ofproto *, const struct cls_rule *,
+ const union ofp_action *, size_t n_actions,
+ uint16_t idle_timeout, uint16_t hard_timeout,
+ ovs_be64 flow_cookie, bool send_flow_removed,
+ struct rule **rulep);
-struct ofport {
- struct hmap_node hmap_node; /* In struct ofproto's "ports" hmap. */
- struct netdev *netdev;
- struct ofp_phy_port opp;
- uint16_t odp_port;
- struct cfm *cfm; /* Connectivity Fault Management, if any. */
-};
+static uint64_t pick_datapath_id(const struct ofproto *);
+static uint64_t pick_fallback_dpid(void);
-static void ofport_free(struct ofport *);
-static void ofport_run(struct ofproto *, struct ofport *);
-static void ofport_wait(struct ofport *);
+static void ofproto_destroy__(struct ofproto *);
+static void ofproto_flush_flows__(struct ofproto *);
-struct action_xlate_ctx {
-/* action_xlate_ctx_init() initializes these members. */
+static void ofproto_rule_destroy__(struct rule *);
+static void ofproto_rule_send_removed(struct rule *, uint8_t reason);
- /* The ofproto. */
- struct ofproto *ofproto;
+static void handle_openflow(struct ofconn *, struct ofpbuf *);
- /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
- * this flow when actions change header fields. */
- struct flow flow;
+static void update_port(struct ofproto *, const char *devname);
+static int init_ports(struct ofproto *);
+static void reinit_ports(struct ofproto *);
- /* The packet corresponding to 'flow', or a null pointer if we are
- * revalidating without a packet to refer to. */
- const struct ofpbuf *packet;
+static void ofproto_unixctl_init(void);
- /* If nonnull, called just before executing a resubmit action.
- *
- * This is normally null so the client has to set it manually after
- * calling action_xlate_ctx_init(). */
- void (*resubmit_hook)(struct action_xlate_ctx *, struct rule *);
+/* All registered ofproto classes, in probe order. */
+static const struct ofproto_class **ofproto_classes;
+static size_t n_ofproto_classes;
+static size_t allocated_ofproto_classes;
- /* If true, the speciality of 'flow' should be checked before executing
- * its actions. If special_cb returns false on 'flow' rendered
- * uninstallable and no actions will be executed. */
- bool check_special;
+/* Map from datapath name to struct ofproto, for use by unixctl commands. */
+static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos);
-/* xlate_actions() initializes and uses these members. The client might want
- * to look at them after it returns. */
+static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
- struct ofpbuf *odp_actions; /* Datapath actions. */
- tag_type tags; /* Tags associated with OFPP_NORMAL actions. */
- bool may_set_up_flow; /* True ordinarily; false if the actions must
- * be reassessed for every packet. */
- uint16_t nf_output_iface; /* Output interface index for NetFlow. */
+static void
+ofproto_initialize(void)
+{
+ static bool inited;
-/* xlate_actions() initializes and uses these members, but the client has no
- * reason to look at them. */
+ if (!inited) {
+ inited = true;
+ ofproto_class_register(&ofproto_dpif_class);
+ }
+}
- int recurse; /* Recursion level, via xlate_table_action. */
- int last_pop_priority; /* Offset in 'odp_actions' just past most
- * recent ODP_ACTION_ATTR_SET_PRIORITY. */
-};
+/* 'type' should be a normalized datapath type, as returned by
+ * ofproto_normalize_type(). Returns the corresponding ofproto_class
+ * structure, or a null pointer if there is none registered for 'type'. */
+static const struct ofproto_class *
+ofproto_class_find__(const char *type)
+{
+ size_t i;
-static void action_xlate_ctx_init(struct action_xlate_ctx *,
- struct ofproto *, const struct flow *,
- const struct ofpbuf *);
-static struct ofpbuf *xlate_actions(struct action_xlate_ctx *,
- const union ofp_action *in, size_t n_in);
-
-/* An OpenFlow flow. */
-struct rule {
- long long int used; /* Time last used; time created if not used. */
- long long int created; /* Creation time. */
-
- /* These statistics:
- *
- * - Do include packets and bytes from facets that have been deleted or
- * whose own statistics have been folded into the rule.
- *
- * - Do include packets and bytes sent "by hand" that were accounted to
- * the rule without any facet being involved (this is a rare corner
- * case in rule_execute()).
- *
- * - Do not include packet or bytes that can be obtained from any facet's
- * packet_count or byte_count member or that can be obtained from the
- * datapath by, e.g., dpif_flow_get() for any facet.
- */
- uint64_t packet_count; /* Number of packets received. */
- uint64_t byte_count; /* Number of bytes received. */
-
- ovs_be64 flow_cookie; /* Controller-issued identifier. */
-
- struct cls_rule cr; /* In owning ofproto's classifier. */
- uint16_t idle_timeout; /* In seconds from time of last use. */
- uint16_t hard_timeout; /* In seconds from time of creation. */
- bool send_flow_removed; /* Send a flow removed message? */
- int n_actions; /* Number of elements in actions[]. */
- union ofp_action *actions; /* OpenFlow actions. */
- struct list facets; /* List of "struct facet"s. */
-};
+ ofproto_initialize();
+ for (i = 0; i < n_ofproto_classes; i++) {
+ const struct ofproto_class *class = ofproto_classes[i];
+ struct sset types;
+ bool found;
-static struct rule *rule_from_cls_rule(const struct cls_rule *);
-static bool rule_is_hidden(const struct rule *);
-
-static struct rule *rule_create(const struct cls_rule *,
- const union ofp_action *, size_t n_actions,
- uint16_t idle_timeout, uint16_t hard_timeout,
- ovs_be64 flow_cookie, bool send_flow_removed);
-static void rule_destroy(struct ofproto *, struct rule *);
-static void rule_free(struct rule *);
-
-static struct rule *rule_lookup(struct ofproto *, const struct flow *);
-static void rule_insert(struct ofproto *, struct rule *);
-static void rule_remove(struct ofproto *, struct rule *);
-
-static void rule_send_removed(struct ofproto *, struct rule *, uint8_t reason);
-static void rule_get_stats(const struct rule *, uint64_t *packets,
- uint64_t *bytes);
-
-/* An exact-match instantiation of an OpenFlow flow. */
-struct facet {
- long long int used; /* Time last used; time created if not used. */
-
- /* These statistics:
- *
- * - Do include packets and bytes sent "by hand", e.g. with
- * dpif_execute().
- *
- * - Do include packets and bytes that were obtained from the datapath
- * when a flow was deleted (e.g. dpif_flow_del()) or when its
- * statistics were reset (e.g. dpif_flow_put() with
- * DPIF_FP_ZERO_STATS).
- *
- * - Do not include any packets or bytes that can currently be obtained
- * from the datapath by, e.g., dpif_flow_get().
- */
- uint64_t packet_count; /* Number of packets received. */
- uint64_t byte_count; /* Number of bytes received. */
-
- uint64_t dp_packet_count; /* Last known packet count in the datapath. */
- uint64_t dp_byte_count; /* Last known byte count in the datapath. */
-
- uint64_t rs_packet_count; /* Packets pushed to resubmit children. */
- uint64_t rs_byte_count; /* Bytes pushed to resubmit children. */
- long long int rs_used; /* Used time pushed to resubmit children. */
-
- /* Number of bytes passed to account_cb. This may include bytes that can
- * currently obtained from the datapath (thus, it can be greater than
- * byte_count). */
- uint64_t accounted_bytes;
-
- struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */
- struct list list_node; /* In owning rule's 'facets' list. */
- struct rule *rule; /* Owning rule. */
- struct flow flow; /* Exact-match flow. */
- bool installed; /* Installed in datapath? */
- bool may_install; /* True ordinarily; false if actions must
- * be reassessed for every packet. */
- size_t actions_len; /* Number of bytes in actions[]. */
- struct nlattr *actions; /* Datapath actions. */
- tag_type tags; /* Tags (set only by hooks). */
- struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
-};
+ sset_init(&types);
+ class->enumerate_types(&types);
+ found = sset_contains(&types, type);
+ sset_destroy(&types);
-static struct facet *facet_create(struct ofproto *, struct rule *,
- const struct flow *,
- const struct ofpbuf *packet);
-static void facet_remove(struct ofproto *, struct facet *);
-static void facet_free(struct facet *);
-
-static struct facet *facet_lookup_valid(struct ofproto *, const struct flow *);
-static bool facet_revalidate(struct ofproto *, struct facet *);
-
-static void facet_install(struct ofproto *, struct facet *, bool zero_stats);
-static void facet_uninstall(struct ofproto *, struct facet *);
-static void facet_flush_stats(struct ofproto *, struct facet *);
-
-static void facet_make_actions(struct ofproto *, struct facet *,
- const struct ofpbuf *packet);
-static void facet_reset_dp_stats(struct facet *, struct dpif_flow_stats *);
-static void facet_update_stats(struct ofproto *, struct facet *,
- const struct dpif_flow_stats *);
-static void facet_push_stats(struct ofproto *, struct facet *);
-
-static void send_packet_in(struct ofproto *, struct dpif_upcall *,
- const struct flow *, bool clone);
-
-struct ofproto {
- /* Settings. */
- uint64_t datapath_id; /* Datapath ID. */
- uint64_t fallback_dpid; /* Datapath ID if no better choice found. */
- char *mfr_desc; /* Manufacturer. */
- char *hw_desc; /* Hardware. */
- char *sw_desc; /* Software version. */
- char *serial_desc; /* Serial number. */
- char *dp_desc; /* Datapath description. */
-
- /* Datapath. */
- struct dpif *dpif;
- struct netdev_monitor *netdev_monitor;
- struct hmap ports; /* Contains "struct ofport"s. */
- struct shash port_by_name;
- uint32_t max_ports;
-
- /* Configuration. */
- struct netflow *netflow;
- struct ofproto_sflow *sflow;
-
- /* Flow table. */
- struct classifier cls;
- struct timer next_expiration;
-
- /* Facets. */
- struct hmap facets;
- bool need_revalidate;
- struct tag_set revalidate_set;
-
- /* OpenFlow connections. */
- struct connmgr *connmgr;
-
- /* Hooks for ovs-vswitchd. */
- const struct ofhooks *ofhooks;
- void *aux;
-
- /* Used by default ofhooks. */
- struct mac_learning *ml;
-};
+ if (found) {
+ return class;
+ }
+ }
+ VLOG_WARN("unknown datapath type %s", type);
+ return NULL;
+}
-/* Map from dpif name to struct ofproto, for use by unixctl commands. */
-static struct shash all_ofprotos = SHASH_INITIALIZER(&all_ofprotos);
+/* Registers a new ofproto class. After successful registration, new ofprotos
+ * of that type can be created using ofproto_create(). */
+int
+ofproto_class_register(const struct ofproto_class *new_class)
+{
+ size_t i;
-static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+ for (i = 0; i < n_ofproto_classes; i++) {
+ if (ofproto_classes[i] == new_class) {
+ return EEXIST;
+ }
+ }
-static const struct ofhooks default_ofhooks;
+ if (n_ofproto_classes >= allocated_ofproto_classes) {
+ ofproto_classes = x2nrealloc(ofproto_classes,
+ &allocated_ofproto_classes,
+ sizeof *ofproto_classes);
+ }
+ ofproto_classes[n_ofproto_classes++] = new_class;
+ return 0;
+}
-static uint64_t pick_datapath_id(const struct ofproto *);
-static uint64_t pick_fallback_dpid(void);
+/* Unregisters a datapath provider. 'type' must have been previously
+ * registered and not currently be in use by any ofprotos. After
+ * unregistration new datapaths of that type cannot be opened using
+ * ofproto_create(). */
+int
+ofproto_class_unregister(const struct ofproto_class *class)
+{
+ size_t i;
-static void ofproto_flush_flows__(struct ofproto *);
-static int ofproto_expire(struct ofproto *);
-static void flow_push_stats(struct ofproto *, const struct rule *,
- struct flow *, uint64_t packets, uint64_t bytes,
- long long int used);
+ for (i = 0; i < n_ofproto_classes; i++) {
+ if (ofproto_classes[i] == class) {
+ for (i++; i < n_ofproto_classes; i++) {
+ ofproto_classes[i - 1] = ofproto_classes[i];
+ }
+ n_ofproto_classes--;
+ return 0;
+ }
+ }
+ VLOG_WARN("attempted to unregister an ofproto class that is not "
+ "registered");
+ return EAFNOSUPPORT;
+}
-static void handle_upcall(struct ofproto *, struct dpif_upcall *);
+/* Clears 'types' and enumerates all registered ofproto types into it. The
+ * caller must first initialize the sset. */
+void
+ofproto_enumerate_types(struct sset *types)
+{
+ size_t i;
-static void handle_openflow(struct ofconn *, struct ofpbuf *);
+ ofproto_initialize();
+ for (i = 0; i < n_ofproto_classes; i++) {
+ ofproto_classes[i]->enumerate_types(types);
+ }
+}
-static struct ofport *get_port(const struct ofproto *, uint16_t odp_port);
-static void update_port(struct ofproto *, const char *devname);
-static int init_ports(struct ofproto *);
-static void reinit_ports(struct ofproto *);
+/* Returns the fully spelled out name for the given ofproto 'type'.
+ *
+ * Normalized type string can be compared with strcmp(). Unnormalized type
+ * string might be the same even if they have different spellings. */
+const char *
+ofproto_normalize_type(const char *type)
+{
+ return type && type[0] ? type : "system";
+}
-static void ofproto_unixctl_init(void);
+/* Clears 'names' and enumerates the names of all known created ofprotos with
+ * the given 'type'. The caller must first initialize the sset. Returns 0 if
+ * successful, otherwise a positive errno value.
+ *
+ * Some kinds of datapaths might not be practically enumerable. This is not
+ * considered an error. */
+int
+ofproto_enumerate_names(const char *type, struct sset *names)
+{
+ const struct ofproto_class *class = ofproto_class_find__(type);
+ return class ? class->enumerate_names(type, names) : EAFNOSUPPORT;
+ }
int
-ofproto_create(const char *datapath, const char *datapath_type,
- const struct ofhooks *ofhooks, void *aux,
+ofproto_create(const char *datapath_name, const char *datapath_type,
struct ofproto **ofprotop)
{
- char local_name[IF_NAMESIZE];
- struct ofproto *p;
- struct dpif *dpif;
+ const struct ofproto_class *class;
+ struct ofproto *ofproto;
int error;
*ofprotop = NULL;
+ ofproto_initialize();
ofproto_unixctl_init();
- /* Connect to datapath and start listening for messages. */
- error = dpif_open(datapath, datapath_type, &dpif);
- if (error) {
- VLOG_ERR("failed to open datapath %s: %s", datapath, strerror(error));
- return error;
- }
- error = dpif_recv_set_mask(dpif,
- ((1u << DPIF_UC_MISS) |
- (1u << DPIF_UC_ACTION) |
- (1u << DPIF_UC_SAMPLE)));
- if (error) {
- VLOG_ERR("failed to listen on datapath %s: %s",
- datapath, strerror(error));
- dpif_close(dpif);
- return error;
+ datapath_type = ofproto_normalize_type(datapath_type);
+ class = ofproto_class_find__(datapath_type);
+ if (!class) {
+ VLOG_WARN("could not create datapath %s of unknown type %s",
+ datapath_name, datapath_type);
+ return EAFNOSUPPORT;
}
- dpif_flow_flush(dpif);
- dpif_recv_purge(dpif);
- error = dpif_port_get_name(dpif, ODPP_LOCAL,
- local_name, sizeof local_name);
+ ofproto = class->alloc();
+ if (!ofproto) {
+ VLOG_ERR("failed to allocate datapath %s of type %s",
+ datapath_name, datapath_type);
+ return ENOMEM;
+ }
+
+ /* Initialize. */
+ memset(ofproto, 0, sizeof *ofproto);
+ ofproto->ofproto_class = class;
+ ofproto->name = xstrdup(datapath_name);
+ ofproto->type = xstrdup(datapath_type);
+ hmap_insert(&all_ofprotos, &ofproto->hmap_node,
+ hash_string(ofproto->name, 0));
+ ofproto->datapath_id = 0;
+ ofproto->fallback_dpid = pick_fallback_dpid();
+ ofproto->mfr_desc = xstrdup(DEFAULT_MFR_DESC);
+ ofproto->hw_desc = xstrdup(DEFAULT_HW_DESC);
+ ofproto->sw_desc = xstrdup(DEFAULT_SW_DESC);
+ ofproto->serial_desc = xstrdup(DEFAULT_SERIAL_DESC);
+ ofproto->dp_desc = xstrdup(DEFAULT_DP_DESC);
+ ofproto->netdev_monitor = netdev_monitor_create();
+ hmap_init(&ofproto->ports);
+ shash_init(&ofproto->port_by_name);
+ ofproto->tables = NULL;
+ ofproto->n_tables = 0;
+ ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name);
+
+ error = ofproto->ofproto_class->construct(ofproto);
if (error) {
- VLOG_ERR("%s: cannot get name of datapath local port (%s)",
- datapath, strerror(error));
+ VLOG_ERR("failed to open datapath %s: %s",
+ datapath_name, strerror(error));
+ ofproto_destroy__(ofproto);
return error;
}
+ assert(ofproto->n_tables > 0);
- /* Initialize settings. */
- p = xzalloc(sizeof *p);
- p->fallback_dpid = pick_fallback_dpid();
- p->datapath_id = p->fallback_dpid;
- p->mfr_desc = xstrdup(DEFAULT_MFR_DESC);
- p->hw_desc = xstrdup(DEFAULT_HW_DESC);
- p->sw_desc = xstrdup(DEFAULT_SW_DESC);
- p->serial_desc = xstrdup(DEFAULT_SERIAL_DESC);
- p->dp_desc = xstrdup(DEFAULT_DP_DESC);
-
- /* Initialize datapath. */
- p->dpif = dpif;
- p->netdev_monitor = netdev_monitor_create();
- hmap_init(&p->ports);
- shash_init(&p->port_by_name);
- p->max_ports = dpif_get_max_ports(dpif);
-
- /* Initialize submodules. */
- p->netflow = NULL;
- p->sflow = NULL;
-
- /* Initialize flow table. */
- classifier_init(&p->cls);
- timer_set_duration(&p->next_expiration, 1000);
-
- /* Initialize facet table. */
- hmap_init(&p->facets);
- p->need_revalidate = false;
- tag_set_init(&p->revalidate_set);
-
- /* Initialize hooks. */
- if (ofhooks) {
- p->ofhooks = ofhooks;
- p->aux = aux;
- p->ml = NULL;
- } else {
- p->ofhooks = &default_ofhooks;
- p->aux = p;
- p->ml = mac_learning_create();
- }
-
- /* Pick final datapath ID. */
- p->datapath_id = pick_datapath_id(p);
- VLOG_INFO("using datapath ID %016"PRIx64, p->datapath_id);
-
- shash_add_once(&all_ofprotos, dpif_name(p->dpif), p);
+ ofproto->datapath_id = pick_datapath_id(ofproto);
+ VLOG_INFO("using datapath ID %016"PRIx64, ofproto->datapath_id);
+ init_ports(ofproto);
- /* Initialize OpenFlow connections. */
- p->connmgr = connmgr_create(p, datapath, local_name);
-
- *ofprotop = p;
+ *ofprotop = ofproto;
return 0;
}
ofproto_set_netflow(struct ofproto *ofproto,
const struct netflow_options *nf_options)
{
- if (nf_options && !sset_is_empty(&nf_options->collectors)) {
- if (!ofproto->netflow) {
- ofproto->netflow = netflow_create();
- }
- return netflow_set_options(ofproto->netflow, nf_options);
+ if (nf_options && sset_is_empty(&nf_options->collectors)) {
+ nf_options = NULL;
+ }
+
+ if (ofproto->ofproto_class->set_netflow) {
+ return ofproto->ofproto_class->set_netflow(ofproto, nf_options);
} else {
- netflow_destroy(ofproto->netflow);
- ofproto->netflow = NULL;
- return 0;
+ return nf_options ? EOPNOTSUPP : 0;
}
}
-void
+int
ofproto_set_sflow(struct ofproto *ofproto,
const struct ofproto_sflow_options *oso)
{
- struct ofproto_sflow *os = ofproto->sflow;
- if (oso) {
- if (!os) {
- struct ofport *ofport;
+ if (oso && sset_is_empty(&oso->targets)) {
+ oso = NULL;
+ }
- os = ofproto->sflow = ofproto_sflow_create(ofproto->dpif);
- HMAP_FOR_EACH (ofport, hmap_node, &ofproto->ports) {
- ofproto_sflow_add_port(os, ofport->odp_port,
- netdev_get_name(ofport->netdev));
- }
- }
- ofproto_sflow_set_options(os, oso);
+ if (ofproto->ofproto_class->set_sflow) {
+ return ofproto->ofproto_class->set_sflow(ofproto, oso);
} else {
- ofproto_sflow_destroy(os);
- ofproto->sflow = NULL;
+ return oso ? EOPNOTSUPP : 0;
}
}
\f
/* Connectivity Fault Management configuration. */
-/* Clears the CFM configuration from 'port_no' on 'ofproto'. */
+/* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
void
-ofproto_iface_clear_cfm(struct ofproto *ofproto, uint32_t port_no)
+ofproto_port_clear_cfm(struct ofproto *ofproto, uint16_t ofp_port)
{
- struct ofport *ofport = get_port(ofproto, port_no);
- if (ofport && ofport->cfm){
- cfm_destroy(ofport->cfm);
- ofport->cfm = NULL;
+ struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
+ if (ofport && ofproto->ofproto_class->set_cfm) {
+ ofproto->ofproto_class->set_cfm(ofport, NULL, NULL, 0);
}
}
-/* Configures connectivity fault management on 'port_no' in 'ofproto'. Takes
+/* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes
* basic configuration from the configuration members in 'cfm', and the set of
* remote maintenance points from the 'n_remote_mps' elements in 'remote_mps'.
* Ignores the statistics members of 'cfm'.
*
- * This function has no effect if 'ofproto' does not have a port 'port_no'. */
+ * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
void
-ofproto_iface_set_cfm(struct ofproto *ofproto, uint32_t port_no,
- const struct cfm *cfm,
- const uint16_t *remote_mps, size_t n_remote_mps)
+ofproto_port_set_cfm(struct ofproto *ofproto, uint16_t ofp_port,
+ const struct cfm *cfm,
+ const uint16_t *remote_mps, size_t n_remote_mps)
{
struct ofport *ofport;
+ int error;
- ofport = get_port(ofproto, port_no);
+ ofport = ofproto_get_port(ofproto, ofp_port);
if (!ofport) {
- VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu32,
- dpif_name(ofproto->dpif), port_no);
+ VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16,
+ ofproto->name, ofp_port);
return;
}
- if (!ofport->cfm) {
- ofport->cfm = cfm_create();
+ error = (ofproto->ofproto_class->set_cfm
+ ? ofproto->ofproto_class->set_cfm(ofport, cfm,
+ remote_mps, n_remote_mps)
+ : EOPNOTSUPP);
+ if (error) {
+ VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)",
+ ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
+ strerror(error));
}
+}
- ofport->cfm->mpid = cfm->mpid;
- ofport->cfm->interval = cfm->interval;
- memcpy(ofport->cfm->maid, cfm->maid, CCM_MAID_LEN);
+/* Returns the connectivity fault management object associated with 'ofp_port'
+ * within 'ofproto', or a null pointer if 'ofproto' does not have a port
+ * 'ofp_port' or if that port does not have CFM configured. The caller must
+ * not modify or destroy the returned object. */
+const struct cfm *
+ofproto_port_get_cfm(struct ofproto *ofproto, uint16_t ofp_port)
+{
+ struct ofport *ofport;
+ const struct cfm *cfm;
- cfm_update_remote_mps(ofport->cfm, remote_mps, n_remote_mps);
+ ofport = ofproto_get_port(ofproto, ofp_port);
+ return (ofport
+ && ofproto->ofproto_class->get_cfm
+ && !ofproto->ofproto_class->get_cfm(ofport, &cfm)) ? cfm : NULL;
+}
- if (!cfm_configure(ofport->cfm)) {
- VLOG_WARN("%s: CFM configuration on port %"PRIu32" (%s) failed",
- dpif_name(ofproto->dpif), port_no,
- netdev_get_name(ofport->netdev));
- cfm_destroy(ofport->cfm);
- ofport->cfm = NULL;
- }
+/* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
+ * Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
+ * 0 if LACP partner information is not current (generally indicating a
+ * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */
+int
+ofproto_port_is_lacp_current(struct ofproto *ofproto, uint16_t ofp_port)
+{
+ struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
+ return (ofport && ofproto->ofproto_class->port_is_lacp_current
+ ? ofproto->ofproto_class->port_is_lacp_current(ofport)
+ : -1);
}
+\f
+/* Bundles. */
-/* Returns the connectivity fault management object associated with 'port_no'
- * within 'ofproto', or a null pointer if 'ofproto' does not have a port
- * 'port_no' or if that port does not have CFM configured. The caller must not
- * modify or destroy the returned object. */
-const struct cfm *
-ofproto_iface_get_cfm(struct ofproto *ofproto, uint32_t port_no)
+/* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
+ * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
+ * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
+ * configuration plus, if there is more than one slave, a bonding
+ * configuration.
+ *
+ * If 'aux' is already registered then this function updates its configuration
+ * to 's'. Otherwise, this function registers a new bundle.
+ *
+ * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
+ * port. */
+int
+ofproto_bundle_register(struct ofproto *ofproto, void *aux,
+ const struct ofproto_bundle_settings *s)
+{
+ return (ofproto->ofproto_class->bundle_set
+ ? ofproto->ofproto_class->bundle_set(ofproto, aux, s)
+ : EOPNOTSUPP);
+}
+
+/* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
+ * If no such bundle has been registered, this has no effect. */
+int
+ofproto_bundle_unregister(struct ofproto *ofproto, void *aux)
{
- struct ofport *ofport = get_port(ofproto, port_no);
- return ofport ? ofport->cfm : NULL;
+ return ofproto_bundle_register(ofproto, aux, NULL);
}
+
\f
-uint64_t
-ofproto_get_datapath_id(const struct ofproto *ofproto)
+/* Registers a mirror associated with client data pointer 'aux' in 'ofproto'.
+ * If 'aux' is already registered then this function updates its configuration
+ * to 's'. Otherwise, this function registers a new mirror.
+ *
+ * Mirrors affect only the treatment of packets output to the OFPP_NORMAL
+ * port. */
+int
+ofproto_mirror_register(struct ofproto *ofproto, void *aux,
+ const struct ofproto_mirror_settings *s)
{
- return ofproto->datapath_id;
+ return (ofproto->ofproto_class->mirror_set
+ ? ofproto->ofproto_class->mirror_set(ofproto, aux, s)
+ : EOPNOTSUPP);
}
-bool
-ofproto_has_primary_controller(const struct ofproto *ofproto)
+/* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
+ * If no mirror has been registered, this has no effect. */
+int
+ofproto_mirror_unregister(struct ofproto *ofproto, void *aux)
{
- return connmgr_has_controllers(ofproto->connmgr);
+ return ofproto_mirror_register(ofproto, aux, NULL);
}
-enum ofproto_fail_mode
-ofproto_get_fail_mode(const struct ofproto *p)
+/* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
+ * which all packets are flooded, instead of using MAC learning. If
+ * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
+ *
+ * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
+ * port. */
+int
+ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans)
{
- return connmgr_get_fail_mode(p->connmgr);
+ return (ofproto->ofproto_class->set_flood_vlans
+ ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans)
+ : EOPNOTSUPP);
}
+/* Returns true if 'aux' is a registered bundle that is currently in use as the
+ * output for a mirror. */
+bool
+ofproto_is_mirror_output_bundle(struct ofproto *ofproto, void *aux)
+{
+ return (ofproto->ofproto_class->is_mirror_output_bundle
+ ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux)
+ : false);
+}
+\f
bool
ofproto_has_snoops(const struct ofproto *ofproto)
{
connmgr_get_snoops(ofproto->connmgr, snoops);
}
+static void
+ofproto_destroy__(struct ofproto *ofproto)
+{
+ size_t i;
+
+ connmgr_destroy(ofproto->connmgr);
+
+ hmap_remove(&all_ofprotos, &ofproto->hmap_node);
+ free(ofproto->name);
+ free(ofproto->mfr_desc);
+ free(ofproto->hw_desc);
+ free(ofproto->sw_desc);
+ free(ofproto->serial_desc);
+ free(ofproto->dp_desc);
+ netdev_monitor_destroy(ofproto->netdev_monitor);
+ hmap_destroy(&ofproto->ports);
+ shash_destroy(&ofproto->port_by_name);
+
+ for (i = 0; i < ofproto->n_tables; i++) {
+ classifier_destroy(&ofproto->tables[i]);
+ }
+ free(ofproto->tables);
+
+ ofproto->ofproto_class->dealloc(ofproto);
+}
+
void
ofproto_destroy(struct ofproto *p)
{
return;
}
- shash_find_and_delete(&all_ofprotos, dpif_name(p->dpif));
-
ofproto_flush_flows__(p);
- connmgr_destroy(p->connmgr);
- classifier_destroy(&p->cls);
- hmap_destroy(&p->facets);
-
- dpif_close(p->dpif);
- netdev_monitor_destroy(p->netdev_monitor);
HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) {
- hmap_remove(&p->ports, &ofport->hmap_node);
- ofport_free(ofport);
+ ofport_destroy(ofport);
}
- shash_destroy(&p->port_by_name);
-
- netflow_destroy(p->netflow);
- ofproto_sflow_destroy(p->sflow);
- mac_learning_destroy(p->ml);
-
- free(p->mfr_desc);
- free(p->hw_desc);
- free(p->sw_desc);
- free(p->serial_desc);
- free(p->dp_desc);
-
- hmap_destroy(&p->ports);
-
- free(p);
+ p->ofproto_class->destruct(p);
+ ofproto_destroy__(p);
}
+/* Destroys the datapath with the respective 'name' and 'type'. With the Linux
+ * kernel datapath, for example, this destroys the datapath in the kernel, and
+ * with the netdev-based datapath, it tears down the data structures that
+ * represent the datapath.
+ *
+ * The datapath should not be currently open as an ofproto. */
int
-ofproto_run(struct ofproto *p)
+ofproto_delete(const char *name, const char *type)
{
- int error = ofproto_run1(p);
- if (!error) {
- error = ofproto_run2(p, false);
- }
- return error;
+ const struct ofproto_class *class = ofproto_class_find__(type);
+ return (!class ? EAFNOSUPPORT
+ : !class->del ? EACCES
+ : class->del(type, name));
}
static void
}
int
-ofproto_run1(struct ofproto *p)
+ofproto_run(struct ofproto *p)
{
- struct ofport *ofport;
char *devname;
int error;
- int i;
- if (shash_is_empty(&p->port_by_name)) {
- init_ports(p);
+ error = p->ofproto_class->run(p);
+ if (error == ENODEV) {
+ /* Someone destroyed the datapath behind our back. The caller
+ * better destroy us and give up, because we're just going to
+ * spin from here on out. */
+ static struct vlog_rate_limit rl2 = VLOG_RATE_LIMIT_INIT(1, 5);
+ VLOG_ERR_RL(&rl2, "%s: datapath was destroyed externally",
+ p->name);
+ return ENODEV;
}
- for (i = 0; i < 50; i++) {
- struct dpif_upcall packet;
-
- error = dpif_recv(p->dpif, &packet);
- if (error) {
- if (error == ENODEV) {
- /* Someone destroyed the datapath behind our back. The caller
- * better destroy us and give up, because we're just going to
- * spin from here on out. */
- static struct vlog_rate_limit rl2 = VLOG_RATE_LIMIT_INIT(1, 5);
- VLOG_ERR_RL(&rl2, "%s: datapath was destroyed externally",
- dpif_name(p->dpif));
- return ENODEV;
- }
- break;
+ if (p->ofproto_class->port_poll) {
+ while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) {
+ process_port_change(p, error, devname);
}
-
- handle_upcall(p, &packet);
- }
-
- while ((error = dpif_port_poll(p->dpif, &devname)) != EAGAIN) {
- process_port_change(p, error, devname);
}
while ((error = netdev_monitor_poll(p->netdev_monitor,
&devname)) != EAGAIN) {
process_port_change(p, error, devname);
}
- HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
- ofport_run(p, ofport);
- }
-
connmgr_run(p->connmgr, handle_openflow);
- if (timer_expired(&p->next_expiration)) {
- int delay = ofproto_expire(p);
- timer_set_duration(&p->next_expiration, delay);
- COVERAGE_INC(ofproto_expiration);
- }
-
- if (p->netflow) {
- netflow_run(p->netflow);
- }
- if (p->sflow) {
- ofproto_sflow_run(p->sflow);
- }
-
- return 0;
-}
-
-int
-ofproto_run2(struct ofproto *p, bool revalidate_all)
-{
- /* Figure out what we need to revalidate now, if anything. */
- struct tag_set revalidate_set = p->revalidate_set;
- if (p->need_revalidate) {
- revalidate_all = true;
- }
-
- /* Clear the revalidation flags. */
- tag_set_init(&p->revalidate_set);
- p->need_revalidate = false;
-
- /* Now revalidate if there's anything to do. */
- if (revalidate_all || !tag_set_is_empty(&revalidate_set)) {
- struct facet *facet, *next;
-
- HMAP_FOR_EACH_SAFE (facet, next, hmap_node, &p->facets) {
- if (revalidate_all
- || tag_set_intersects(&revalidate_set, facet->tags)) {
- facet_revalidate(p, facet);
- }
- }
- }
-
return 0;
}
void
ofproto_wait(struct ofproto *p)
{
- struct ofport *ofport;
-
- HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
- ofport_wait(ofport);
+ p->ofproto_class->wait(p);
+ if (p->ofproto_class->port_poll_wait) {
+ p->ofproto_class->port_poll_wait(p);
}
- dpif_recv_wait(p->dpif);
- dpif_port_poll_wait(p->dpif);
netdev_monitor_poll_wait(p->netdev_monitor);
- if (p->sflow) {
- ofproto_sflow_wait(p->sflow);
- }
- if (!tag_set_is_empty(&p->revalidate_set)) {
- poll_immediate_wake();
- }
- if (p->need_revalidate) {
- /* Shouldn't happen, but if it does just go around again. */
- VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
- poll_immediate_wake();
- } else {
- timer_wait(&p->next_expiration);
- }
connmgr_wait(p->connmgr);
}
-void
-ofproto_revalidate(struct ofproto *ofproto, tag_type tag)
-{
- tag_set_add(&ofproto->revalidate_set, tag);
-}
-
-struct tag_set *
-ofproto_get_revalidate_set(struct ofproto *ofproto)
-{
- return &ofproto->revalidate_set;
-}
-
bool
ofproto_is_alive(const struct ofproto *p)
{
shash_destroy(info);
}
-/* Deletes port number 'odp_port' from the datapath for 'ofproto'.
+/* Makes a deep copy of 'old' into 'port'. */
+void
+ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old)
+{
+ port->name = xstrdup(old->name);
+ port->type = xstrdup(old->type);
+ port->ofp_port = old->ofp_port;
+}
+
+/* Frees memory allocated to members of 'ofproto_port'.
*
- * This is almost the same as calling dpif_port_del() directly on the
- * datapath, but it also makes 'ofproto' close its open netdev for the port
- * (if any). This makes it possible to create a new netdev of a different
- * type under the same name, which otherwise the netdev library would refuse
- * to do because of the conflict. (The netdev would eventually get closed on
- * the next trip through ofproto_run(), but this interface is more direct.)
+ * Do not call this function on an ofproto_port obtained from
+ * ofproto_port_dump_next(): that function retains ownership of the data in the
+ * ofproto_port. */
+void
+ofproto_port_destroy(struct ofproto_port *ofproto_port)
+{
+ free(ofproto_port->name);
+ free(ofproto_port->type);
+}
+
+/* Initializes 'dump' to begin dumping the ports in an ofproto.
*
- * Returns 0 if successful, otherwise a positive errno. */
+ * This function provides no status indication. An error status for the entire
+ * dump operation is provided when it is completed by calling
+ * ofproto_port_dump_done().
+ */
+void
+ofproto_port_dump_start(struct ofproto_port_dump *dump,
+ const struct ofproto *ofproto)
+{
+ dump->ofproto = ofproto;
+ dump->error = ofproto->ofproto_class->port_dump_start(ofproto,
+ &dump->state);
+}
+
+/* Attempts to retrieve another port from 'dump', which must have been created
+ * with ofproto_port_dump_start(). On success, stores a new ofproto_port into
+ * 'port' and returns true. On failure, returns false.
+ *
+ * Failure might indicate an actual error or merely that the last port has been
+ * dumped. An error status for the entire dump operation is provided when it
+ * is completed by calling ofproto_port_dump_done().
+ *
+ * The ofproto owns the data stored in 'port'. It will remain valid until at
+ * least the next time 'dump' is passed to ofproto_port_dump_next() or
+ * ofproto_port_dump_done(). */
+bool
+ofproto_port_dump_next(struct ofproto_port_dump *dump,
+ struct ofproto_port *port)
+{
+ const struct ofproto *ofproto = dump->ofproto;
+
+ if (dump->error) {
+ return false;
+ }
+
+ dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state,
+ port);
+ if (dump->error) {
+ ofproto->ofproto_class->port_dump_done(ofproto, dump->state);
+ return false;
+ }
+ return true;
+}
+
+/* Completes port table dump operation 'dump', which must have been created
+ * with ofproto_port_dump_start(). Returns 0 if the dump operation was
+ * error-free, otherwise a positive errno value describing the problem. */
int
-ofproto_port_del(struct ofproto *ofproto, uint16_t odp_port)
+ofproto_port_dump_done(struct ofproto_port_dump *dump)
{
- struct ofport *ofport = get_port(ofproto, odp_port);
- const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>";
+ const struct ofproto *ofproto = dump->ofproto;
+ if (!dump->error) {
+ dump->error = ofproto->ofproto_class->port_dump_done(ofproto,
+ dump->state);
+ }
+ return dump->error == EOF ? 0 : dump->error;
+}
+
+/* Attempts to add 'netdev' as a port on 'ofproto'. If successful, returns 0
+ * and sets '*ofp_portp' to the new port's OpenFlow port number (if 'ofp_portp'
+ * is non-null). On failure, returns a positive errno value and sets
+ * '*ofp_portp' to OFPP_NONE (if 'ofp_portp' is non-null). */
+int
+ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev,
+ uint16_t *ofp_portp)
+{
+ uint16_t ofp_port;
int error;
- error = dpif_port_del(ofproto->dpif, odp_port);
- if (error) {
- VLOG_ERR("%s: failed to remove port %"PRIu16" (%s) interface (%s)",
- dpif_name(ofproto->dpif), odp_port, name, strerror(error));
- } else if (ofport) {
- /* 'name' is the netdev's name and update_port() is going to close the
- * netdev. Just in case update_port() refers to 'name' after it
- * destroys 'ofport', make a copy of it around the update_port()
- * call. */
- char *devname = xstrdup(name);
- update_port(ofproto, devname);
- free(devname);
+ error = ofproto->ofproto_class->port_add(ofproto, netdev, &ofp_port);
+ if (!error) {
+ update_port(ofproto, netdev_get_name(netdev));
+ }
+ if (ofp_portp) {
+ *ofp_portp = error ? OFPP_NONE : ofp_port;
}
return error;
}
-/* Checks if 'ofproto' thinks 'odp_port' should be included in floods. Returns
- * true if 'odp_port' exists and should be included, false otherwise. */
-bool
-ofproto_port_is_floodable(struct ofproto *ofproto, uint16_t odp_port)
+/* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and
+ * initializes '*port' appropriately; on failure, returns a positive errno
+ * value.
+ *
+ * The caller owns the data in 'ofproto_port' and must free it with
+ * ofproto_port_destroy() when it is no longer needed. */
+int
+ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname,
+ struct ofproto_port *port)
{
- struct ofport *ofport = get_port(ofproto, odp_port);
- return ofport && !(ofport->opp.config & htonl(OFPPC_NO_FLOOD));
+ int error;
+
+ error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port);
+ if (error) {
+ memset(port, 0, sizeof *port);
+ }
+ return error;
}
-/* Sends 'packet' out of port 'port_no' within 'p'.
- *
- * Returns 0 if successful, otherwise a positive errno value. */
+/* Deletes port number 'ofp_port' from the datapath for 'ofproto'.
+ * Returns 0 if successful, otherwise a positive errno. */
int
-ofproto_send_packet(struct ofproto *ofproto,
- uint32_t port_no, const struct ofpbuf *packet)
+ofproto_port_del(struct ofproto *ofproto, uint16_t ofp_port)
{
- struct ofpbuf odp_actions;
+ struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
+ const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>";
int error;
- ofpbuf_init(&odp_actions, 32);
- nl_msg_put_u32(&odp_actions, ODP_ACTION_ATTR_OUTPUT, port_no);
- error = dpif_execute(ofproto->dpif, odp_actions.data, odp_actions.size,
- packet);
- ofpbuf_uninit(&odp_actions);
-
- if (error) {
- VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)",
- dpif_name(ofproto->dpif), port_no, strerror(error));
+ error = ofproto->ofproto_class->port_del(ofproto, ofp_port);
+ if (!error && ofport) {
+ /* 'name' is the netdev's name and update_port() is going to close the
+ * netdev. Just in case update_port() refers to 'name' after it
+ * destroys 'ofport', make a copy of it around the update_port()
+ * call. */
+ char *devname = xstrdup(name);
+ update_port(ofproto, devname);
+ free(devname);
}
return error;
}
-/* Adds a flow to the OpenFlow flow table in 'p' that matches 'cls_rule' and
+/* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and
* performs the 'n_actions' actions in 'actions'. The new flow will not
* timeout.
*
* (0...65535, inclusive) then the flow will be visible to OpenFlow
* controllers; otherwise, it will be hidden.
*
- * The caller retains ownership of 'cls_rule' and 'actions'. */
+ * The caller retains ownership of 'cls_rule' and 'actions'.
+ *
+ * This is a helper function for in-band control and fail-open. */
void
ofproto_add_flow(struct ofproto *p, const struct cls_rule *cls_rule,
const union ofp_action *actions, size_t n_actions)
{
struct rule *rule;
- rule = rule_create(cls_rule, actions, n_actions, 0, 0, 0, false);
- rule_insert(p, rule);
+ rule_create(p, cls_rule, actions, n_actions, 0, 0, 0, false, &rule);
}
+/* Searches for a rule with matching criteria exactly equal to 'target' in
+ * ofproto's table 0 and, if it finds one, deletes it.
+ *
+ * This is a helper function for in-band control and fail-open. */
void
ofproto_delete_flow(struct ofproto *ofproto, const struct cls_rule *target)
{
struct rule *rule;
- rule = rule_from_cls_rule(classifier_find_rule_exactly(&ofproto->cls,
- target));
- if (rule) {
- rule_remove(ofproto, rule);
- }
+ rule = rule_from_cls_rule(classifier_find_rule_exactly(
+ &ofproto->tables[0], target));
+ ofproto_rule_destroy(rule);
}
static void
ofproto_flush_flows__(struct ofproto *ofproto)
{
- struct facet *facet, *next_facet;
- struct rule *rule, *next_rule;
- struct cls_cursor cursor;
+ size_t i;
COVERAGE_INC(ofproto_flush);
- HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) {
- /* Mark the facet as not installed so that facet_remove() doesn't
- * bother trying to uninstall it. There is no point in uninstalling it
- * individually since we are about to blow away all the facets with
- * dpif_flow_flush(). */
- facet->installed = false;
- facet->dp_packet_count = 0;
- facet->dp_byte_count = 0;
- facet_remove(ofproto, facet);
+ if (ofproto->ofproto_class->flush) {
+ ofproto->ofproto_class->flush(ofproto);
}
- cls_cursor_init(&cursor, &ofproto->cls, NULL);
- CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
- rule_remove(ofproto, rule);
- }
+ for (i = 0; i < ofproto->n_tables; i++) {
+ struct rule *rule, *next_rule;
+ struct cls_cursor cursor;
- dpif_flow_flush(ofproto->dpif);
+ cls_cursor_init(&cursor, &ofproto->tables[i], NULL);
+ CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
+ ofproto_rule_destroy(rule);
+ }
+ }
}
+/* Deletes all of the flows from all of ofproto's flow tables, then
+ * reintroduces rules required by in-band control and fail open. */
void
ofproto_flush_flows(struct ofproto *ofproto)
{
static void
reinit_ports(struct ofproto *p)
{
- struct dpif_port_dump dump;
+ struct ofproto_port_dump dump;
struct sset devnames;
struct ofport *ofport;
- struct dpif_port dpif_port;
+ struct ofproto_port ofproto_port;
const char *devname;
COVERAGE_INC(ofproto_reinit_ports);
HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
sset_add(&devnames, netdev_get_name(ofport->netdev));
}
- DPIF_PORT_FOR_EACH (&dpif_port, &dump, p->dpif) {
- sset_add(&devnames, dpif_port.name);
+ OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
+ sset_add(&devnames, ofproto_port.name);
}
SSET_FOR_EACH (devname, &devnames) {
sset_destroy(&devnames);
}
-/* Opens and returns a netdev for 'dpif_port', or a null pointer if the netdev
- * cannot be opened. On success, also fills in 'opp'. */
+/* Opens and returns a netdev for 'ofproto_port', or a null pointer if the
+ * netdev cannot be opened. On success, also fills in 'opp'. */
static struct netdev *
-ofport_open(const struct dpif_port *dpif_port, struct ofp_phy_port *opp)
+ofport_open(const struct ofproto_port *ofproto_port, struct ofp_phy_port *opp)
{
uint32_t curr, advertised, supported, peer;
struct netdev_options netdev_options;
int error;
memset(&netdev_options, 0, sizeof netdev_options);
- netdev_options.name = dpif_port->name;
- netdev_options.type = dpif_port->type;
+ netdev_options.name = ofproto_port->name;
+ netdev_options.type = ofproto_port->type;
netdev_options.ethertype = NETDEV_ETH_TYPE_NONE;
error = netdev_open(&netdev_options, &netdev);
if (error) {
VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s "
"cannot be opened (%s)",
- dpif_port->name, dpif_port->port_no,
- dpif_port->name, strerror(error));
+ ofproto_port->name, ofproto_port->ofp_port,
+ ofproto_port->name, strerror(error));
return NULL;
}
netdev_get_flags(netdev, &flags);
netdev_get_features(netdev, &curr, &advertised, &supported, &peer);
- opp->port_no = htons(odp_port_to_ofp_port(dpif_port->port_no));
+ opp->port_no = htons(ofproto_port->ofp_port);
netdev_get_etheraddr(netdev, opp->hw_addr);
- ovs_strzcpy(opp->name, dpif_port->name, sizeof opp->name);
+ ovs_strzcpy(opp->name, ofproto_port->name, sizeof opp->name);
opp->config = flags & NETDEV_UP ? 0 : htonl(OFPPC_PORT_DOWN);
opp->state = netdev_get_carrier(netdev) ? 0 : htonl(OFPPS_LINK_DOWN);
opp->curr = htonl(curr);
return netdev;
}
-static bool
-ofport_conflicts(const struct ofproto *p, const struct dpif_port *dpif_port)
-{
- if (get_port(p, dpif_port->port_no)) {
- VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath",
- dpif_port->port_no);
- return true;
- } else if (shash_find(&p->port_by_name, dpif_port->name)) {
- VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath",
- dpif_port->name);
- return true;
- } else {
- return false;
- }
-}
-
/* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
* port number, and 'config' bits other than OFPPC_PORT_DOWN are
* disregarded. */
{
const char *netdev_name = netdev_get_name(netdev);
struct ofport *ofport;
-
- connmgr_send_port_status(p->connmgr, opp, OFPPR_ADD);
+ int error;
/* Create ofport. */
- ofport = xmalloc(sizeof *ofport);
+ ofport = p->ofproto_class->port_alloc();
+ if (!ofport) {
+ error = ENOMEM;
+ goto error;
+ }
+ ofport->ofproto = p;
ofport->netdev = netdev;
ofport->opp = *opp;
- ofport->odp_port = ofp_port_to_odp_port(ntohs(opp->port_no));
- ofport->cfm = NULL;
+ ofport->ofp_port = ntohs(opp->port_no);
/* Add port to 'p'. */
netdev_monitor_add(p->netdev_monitor, ofport->netdev);
- hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->odp_port, 0));
+ hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->ofp_port, 0));
shash_add(&p->port_by_name, netdev_name, ofport);
- if (p->sflow) {
- ofproto_sflow_add_port(p->sflow, ofport->odp_port, netdev_name);
+
+ /* Let the ofproto_class initialize its private data. */
+ error = p->ofproto_class->port_construct(ofport);
+ if (error) {
+ goto error;
+ }
+ connmgr_send_port_status(p->connmgr, opp, OFPPR_ADD);
+ return;
+
+error:
+ VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)",
+ p->name, netdev_name, strerror(error));
+ if (ofport) {
+ ofport_destroy__(ofport);
+ } else {
+ netdev_close(netdev);
}
}
/* Removes 'ofport' from 'p' and destroys it. */
static void
-ofport_remove(struct ofproto *p, struct ofport *ofport)
+ofport_remove(struct ofport *ofport)
{
- connmgr_send_port_status(p->connmgr, &ofport->opp, OFPPR_DELETE);
-
- netdev_monitor_remove(p->netdev_monitor, ofport->netdev);
- hmap_remove(&p->ports, &ofport->hmap_node);
- shash_delete(&p->port_by_name,
- shash_find(&p->port_by_name,
- netdev_get_name(ofport->netdev)));
- if (p->sflow) {
- ofproto_sflow_del_port(p->sflow, ofport->odp_port);
- }
-
- ofport_free(ofport);
+ connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->opp,
+ OFPPR_DELETE);
+ ofport_destroy(ofport);
}
/* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
{
struct ofport *port = shash_find_data(&ofproto->port_by_name, name);
if (port) {
- ofport_remove(ofproto, port);
+ ofport_remove(port);
}
}
* Does not handle a name or port number change. The caller must implement
* such a change as a delete followed by an add. */
static void
-ofport_modified(struct ofproto *ofproto, struct ofport *port,
- struct netdev *netdev, struct ofp_phy_port *opp)
+ofport_modified(struct ofport *port, struct ofp_phy_port *opp)
{
memcpy(port->opp.hw_addr, opp->hw_addr, ETH_ADDR_LEN);
port->opp.config = ((port->opp.config & ~htonl(OFPPC_PORT_DOWN))
port->opp.supported = opp->supported;
port->opp.peer = opp->peer;
- netdev_monitor_remove(ofproto->netdev_monitor, port->netdev);
- netdev_monitor_add(ofproto->netdev_monitor, netdev);
-
- netdev_close(port->netdev);
- port->netdev = netdev;
-
- connmgr_send_port_status(ofproto->connmgr, &port->opp, OFPPR_MODIFY);
+ connmgr_send_port_status(port->ofproto->connmgr, &port->opp, OFPPR_MODIFY);
}
-static void
-ofport_run(struct ofproto *ofproto, struct ofport *ofport)
+void
+ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port)
{
- if (ofport->cfm) {
- cfm_run(ofport->cfm);
-
- if (cfm_should_send_ccm(ofport->cfm)) {
- struct ofpbuf packet;
- struct ccm *ccm;
-
- ofpbuf_init(&packet, 0);
- ccm = eth_compose(&packet, eth_addr_ccm, ofport->opp.hw_addr,
- ETH_TYPE_CFM, sizeof *ccm);
- cfm_compose_ccm(ofport->cfm, ccm);
- ofproto_send_packet(ofproto, ofport->odp_port, &packet);
- ofpbuf_uninit(&packet);
+ struct ofport *port = ofproto_get_port(ofproto, ofp_port);
+ if (port) {
+ if (port->ofproto->ofproto_class->set_cfm) {
+ port->ofproto->ofproto_class->set_cfm(port, NULL, NULL, 0);
+ }
+ if (port->ofproto->ofproto_class->bundle_remove) {
+ port->ofproto->ofproto_class->bundle_remove(port);
}
}
}
static void
-ofport_wait(struct ofport *ofport)
+ofport_destroy__(struct ofport *port)
{
- if (ofport->cfm) {
- cfm_wait(ofport->cfm);
- }
+ struct ofproto *ofproto = port->ofproto;
+ const char *name = netdev_get_name(port->netdev);
+
+ netdev_monitor_remove(ofproto->netdev_monitor, port->netdev);
+ hmap_remove(&ofproto->ports, &port->hmap_node);
+ shash_delete(&ofproto->port_by_name,
+ shash_find(&ofproto->port_by_name, name));
+
+ netdev_close(port->netdev);
+ ofproto->ofproto_class->port_dealloc(port);
}
static void
-ofport_free(struct ofport *ofport)
+ofport_destroy(struct ofport *port)
{
- if (ofport) {
- cfm_destroy(ofport->cfm);
- netdev_close(ofport->netdev);
- free(ofport);
- }
+ if (port) {
+ port->ofproto->ofproto_class->port_destruct(port);
+ ofport_destroy__(port);
+ }
}
-static struct ofport *
-get_port(const struct ofproto *ofproto, uint16_t odp_port)
+struct ofport *
+ofproto_get_port(const struct ofproto *ofproto, uint16_t ofp_port)
{
struct ofport *port;
HMAP_FOR_EACH_IN_BUCKET (port, hmap_node,
- hash_int(odp_port, 0), &ofproto->ports) {
- if (port->odp_port == odp_port) {
+ hash_int(ofp_port, 0), &ofproto->ports) {
+ if (port->ofp_port == ofp_port) {
return port;
}
}
static void
update_port(struct ofproto *ofproto, const char *name)
{
- struct dpif_port dpif_port;
+ struct ofproto_port ofproto_port;
struct ofp_phy_port opp;
struct netdev *netdev;
struct ofport *port;
COVERAGE_INC(ofproto_update_port);
/* Fetch 'name''s location and properties from the datapath. */
- netdev = (!dpif_port_query_by_name(ofproto->dpif, name, &dpif_port)
- ? ofport_open(&dpif_port, &opp)
+ netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port)
+ ? ofport_open(&ofproto_port, &opp)
: NULL);
if (netdev) {
- port = get_port(ofproto, dpif_port.port_no);
+ port = ofproto_get_port(ofproto, ofproto_port.ofp_port);
if (port && !strcmp(netdev_get_name(port->netdev), name)) {
+ struct netdev *old_netdev = port->netdev;
+
/* 'name' hasn't changed location. Any properties changed? */
if (!ofport_equal(&port->opp, &opp)) {
- ofport_modified(ofproto, port, netdev, &opp);
- } else {
- netdev_close(netdev);
+ ofport_modified(port, &opp);
+ }
+
+ /* Install the newly opened netdev in case it has changed.
+ * Don't close the old netdev yet in case port_modified has to
+ * remove a retained reference to it.*/
+ netdev_monitor_remove(ofproto->netdev_monitor, port->netdev);
+ netdev_monitor_add(ofproto->netdev_monitor, netdev);
+ port->netdev = netdev;
+
+ if (port->ofproto->ofproto_class->port_modified) {
+ port->ofproto->ofproto_class->port_modified(port);
}
+
+ netdev_close(old_netdev);
} else {
/* If 'port' is nonnull then its name differs from 'name' and thus
* we should delete it. If we think there's a port named 'name'
* then its port number must be wrong now so delete it too. */
if (port) {
- ofport_remove(ofproto, port);
+ ofport_remove(port);
}
ofport_remove_with_name(ofproto, name);
ofport_install(ofproto, netdev, &opp);
/* Any port named 'name' is gone now. */
ofport_remove_with_name(ofproto, name);
}
- dpif_port_destroy(&dpif_port);
+ ofproto_port_destroy(&ofproto_port);
}
static int
init_ports(struct ofproto *p)
{
- struct dpif_port_dump dump;
- struct dpif_port dpif_port;
-
- DPIF_PORT_FOR_EACH (&dpif_port, &dump, p->dpif) {
- if (!ofport_conflicts(p, &dpif_port)) {
+ struct ofproto_port_dump dump;
+ struct ofproto_port ofproto_port;
+
+ OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
+ uint16_t ofp_port = ofproto_port.ofp_port;
+ if (ofproto_get_port(p, ofp_port)) {
+ VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath",
+ ofp_port);
+ } else if (shash_find(&p->port_by_name, ofproto_port.name)) {
+ VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath",
+ ofproto_port.name);
+ } else {
struct ofp_phy_port opp;
struct netdev *netdev;
- netdev = ofport_open(&dpif_port, &opp);
+ netdev = ofport_open(&ofproto_port, &opp);
if (netdev) {
ofport_install(p, netdev, &opp);
}
return 0;
}
\f
-/* Returns true if 'rule' should be hidden from the controller.
- *
- * Rules with priority higher than UINT16_MAX are set up by ofproto itself
- * (e.g. by in-band control) and are intentionally hidden from the
- * controller. */
-static bool
-rule_is_hidden(const struct rule *rule)
-{
- return rule->cr.priority > UINT16_MAX;
-}
-
-/* Creates and returns a new rule initialized as specified.
- *
- * The caller is responsible for inserting the rule into the classifier (with
- * rule_insert()). */
-static struct rule *
-rule_create(const struct cls_rule *cls_rule,
+/* Creates a new rule initialized as specified, inserts it into 'ofproto''s
+ * flow table, and stores the new rule into '*rulep'. Returns 0 on success,
+ * otherwise a positive errno value or OpenFlow error code. */
+static int
+rule_create(struct ofproto *ofproto, const struct cls_rule *cls_rule,
const union ofp_action *actions, size_t n_actions,
uint16_t idle_timeout, uint16_t hard_timeout,
- ovs_be64 flow_cookie, bool send_flow_removed)
+ ovs_be64 flow_cookie, bool send_flow_removed,
+ struct rule **rulep)
{
- struct rule *rule = xzalloc(sizeof *rule);
+ struct rule *rule;
+ int error;
+
+ rule = ofproto->ofproto_class->rule_alloc();
+ if (!rule) {
+ error = ENOMEM;
+ goto error;
+ }
+
+ rule->ofproto = ofproto;
rule->cr = *cls_rule;
+ rule->flow_cookie = flow_cookie;
+ rule->created = time_msec();
rule->idle_timeout = idle_timeout;
rule->hard_timeout = hard_timeout;
- rule->flow_cookie = flow_cookie;
- rule->used = rule->created = time_msec();
rule->send_flow_removed = send_flow_removed;
- list_init(&rule->facets);
if (n_actions > 0) {
- rule->n_actions = n_actions;
rule->actions = xmemdup(actions, n_actions * sizeof *actions);
+ } else {
+ rule->actions = NULL;
}
+ rule->n_actions = n_actions;
- return rule;
-}
+ error = ofproto->ofproto_class->rule_construct(rule);
+ if (error) {
+ ofproto_rule_destroy__(rule);
+ goto error;
+ }
-static struct rule *
-rule_from_cls_rule(const struct cls_rule *cls_rule)
-{
- return cls_rule ? CONTAINER_OF(cls_rule, struct rule, cr) : NULL;
+ *rulep = rule;
+ return 0;
+
+error:
+ VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)",
+ ofproto->name, strerror(error));
+ *rulep = NULL;
+ return error;
}
static void
-rule_free(struct rule *rule)
+ofproto_rule_destroy__(struct rule *rule)
{
free(rule->actions);
- free(rule);
+ rule->ofproto->ofproto_class->rule_dealloc(rule);
}
-/* Destroys 'rule' and iterates through all of its facets and revalidates them,
- * destroying any that no longer has a rule (which is probably all of them).
- *
- * The caller must have already removed 'rule' from the classifier. */
-static void
-rule_destroy(struct ofproto *ofproto, struct rule *rule)
+/* Destroys 'rule' and removes it from the flow table and the datapath. */
+void
+ofproto_rule_destroy(struct rule *rule)
{
- struct facet *facet, *next_facet;
- LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
- facet_revalidate(ofproto, facet);
+ if (rule) {
+ rule->ofproto->ofproto_class->rule_destruct(rule);
+ ofproto_rule_destroy__(rule);
}
- rule_free(rule);
}
/* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
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, const struct flow *flow,
- const struct nlattr *odp_actions, size_t actions_len,
- struct ofpbuf *packet)
-{
- if (actions_len == NLA_ALIGN(NLA_HDRLEN + sizeof(uint64_t))
- && odp_actions->nla_type == ODP_ACTION_ATTR_CONTROLLER) {
- /* As an optimization, avoid a round-trip from userspace to kernel to
- * userspace. This also avoids possibly filling up kernel packet
- * buffers along the way. */
- struct dpif_upcall upcall;
-
- upcall.type = DPIF_UC_ACTION;
- upcall.packet = packet;
- upcall.key = NULL;
- upcall.key_len = 0;
- upcall.userdata = nl_attr_get_u64(odp_actions);
- upcall.sample_pool = 0;
- upcall.actions = NULL;
- upcall.actions_len = 0;
-
- send_packet_in(ofproto, &upcall, flow, false);
-
- return true;
- } else {
- int error;
-
- error = dpif_execute(ofproto->dpif, odp_actions, actions_len, packet);
- ofpbuf_delete(packet);
- return !error;
- }
-}
-
-/* Executes the actions indicated by 'facet' on 'packet' and credits 'facet''s
+/* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s
* statistics appropriately. 'packet' must have at least sizeof(struct
* ofp_packet_in) bytes of headroom.
*
- * For correct results, 'packet' must actually be in 'facet''s flow; that is,
- * applying flow_extract() to 'packet' would yield the same flow as
- * 'facet->flow'.
- *
- * 'facet' must have accurately composed ODP actions; that is, it must not be
- * in need of revalidation.
- *
- * Takes ownership of 'packet'. */
-static void
-facet_execute(struct ofproto *ofproto, struct facet *facet,
- struct ofpbuf *packet)
-{
- struct dpif_flow_stats stats;
-
- assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in));
-
- flow_extract_stats(&facet->flow, packet, &stats);
- stats.used = time_msec();
- if (execute_odp_actions(ofproto, &facet->flow,
- facet->actions, facet->actions_len, packet)) {
- facet_update_stats(ofproto, facet, &stats);
- }
-}
-
-/* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s
- * statistics (or the statistics for one of its facets) appropriately.
- * 'packet' must have at least sizeof(struct ofp_packet_in) bytes of headroom.
- *
* 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited
* with statistics for 'packet' either way.
*
* Takes ownership of 'packet'. */
-static void
-rule_execute(struct ofproto *ofproto, struct rule *rule, uint16_t in_port,
- struct ofpbuf *packet)
-{
- struct action_xlate_ctx ctx;
- struct ofpbuf *odp_actions;
- struct facet *facet;
- struct flow flow;
- size_t size;
-
- assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in));
-
- flow_extract(packet, 0, in_port, &flow);
-
- /* First look for a related facet. If we find one, account it to that. */
- facet = facet_lookup_valid(ofproto, &flow);
- if (facet && facet->rule == rule) {
- facet_execute(ofproto, facet, packet);
- return;
- }
-
- /* Otherwise, if 'rule' is in fact the correct rule for 'packet', then
- * create a new facet for it and use that. */
- if (rule_lookup(ofproto, &flow) == rule) {
- facet = facet_create(ofproto, rule, &flow, packet);
- facet_execute(ofproto, facet, packet);
- facet_install(ofproto, facet, true);
- return;
- }
-
- /* We can't account anything to a facet. If we were to try, then that
- * facet would have a non-matching rule, busting our invariants. */
- action_xlate_ctx_init(&ctx, ofproto, &flow, packet);
- odp_actions = xlate_actions(&ctx, rule->actions, rule->n_actions);
- size = packet->size;
- if (execute_odp_actions(ofproto, &flow, odp_actions->data,
- odp_actions->size, packet)) {
- rule->used = time_msec();
- rule->packet_count++;
- rule->byte_count += size;
- flow_push_stats(ofproto, rule, &flow, 1, size, rule->used);
- }
- ofpbuf_delete(odp_actions);
-}
-
-/* Inserts 'rule' into 'p''s flow table. */
-static void
-rule_insert(struct ofproto *p, struct rule *rule)
-{
- struct rule *displaced_rule;
-
- displaced_rule = rule_from_cls_rule(classifier_insert(&p->cls, &rule->cr));
- if (displaced_rule) {
- rule_destroy(p, displaced_rule);
- }
- p->need_revalidate = true;
-}
-
-/* Creates and returns a new facet within 'ofproto' owned by 'rule', given a
- * 'flow' and an example 'packet' within that flow.
- *
- * The caller must already have determined that no facet with an identical
- * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
- * 'ofproto''s classifier table. */
-static struct facet *
-facet_create(struct ofproto *ofproto, struct rule *rule,
- const struct flow *flow, const struct ofpbuf *packet)
-{
- struct facet *facet;
-
- facet = xzalloc(sizeof *facet);
- facet->used = time_msec();
- hmap_insert(&ofproto->facets, &facet->hmap_node, flow_hash(flow, 0));
- list_push_back(&rule->facets, &facet->list_node);
- facet->rule = rule;
- facet->flow = *flow;
- netflow_flow_init(&facet->nf_flow);
- netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
-
- facet_make_actions(ofproto, facet, packet);
-
- return facet;
-}
-
-static void
-facet_free(struct facet *facet)
-{
- free(facet->actions);
- free(facet);
-}
-
-/* Remove 'rule' from 'ofproto' and free up the associated memory:
- *
- * - Removes 'rule' from the classifier.
- *
- * - If 'rule' has facets, revalidates them (and possibly uninstalls and
- * destroys them), via rule_destroy().
- */
-static void
-rule_remove(struct ofproto *ofproto, struct rule *rule)
-{
- COVERAGE_INC(ofproto_del_rule);
- ofproto->need_revalidate = true;
- classifier_remove(&ofproto->cls, &rule->cr);
- rule_destroy(ofproto, rule);
-}
-
-/* Remove 'facet' from 'ofproto' and free up the associated memory:
- *
- * - If 'facet' was installed in the datapath, uninstalls it and updates its
- * rule's statistics, via facet_uninstall().
- *
- * - Removes 'facet' from its rule and from ofproto->facets.
- */
-static void
-facet_remove(struct ofproto *ofproto, struct facet *facet)
-{
- facet_uninstall(ofproto, facet);
- facet_flush_stats(ofproto, facet);
- hmap_remove(&ofproto->facets, &facet->hmap_node);
- list_remove(&facet->list_node);
- facet_free(facet);
-}
-
-/* Composes the ODP actions for 'facet' based on its rule's actions. */
-static void
-facet_make_actions(struct ofproto *p, struct facet *facet,
- const struct ofpbuf *packet)
-{
- const struct rule *rule = facet->rule;
- struct ofpbuf *odp_actions;
- struct action_xlate_ctx ctx;
-
- action_xlate_ctx_init(&ctx, p, &facet->flow, packet);
- odp_actions = xlate_actions(&ctx, rule->actions, rule->n_actions);
- facet->tags = ctx.tags;
- facet->may_install = ctx.may_set_up_flow;
- facet->nf_flow.output_iface = ctx.nf_output_iface;
-
- if (facet->actions_len != odp_actions->size
- || memcmp(facet->actions, odp_actions->data, odp_actions->size)) {
- free(facet->actions);
- facet->actions_len = odp_actions->size;
- facet->actions = xmemdup(odp_actions->data, odp_actions->size);
- }
-
- ofpbuf_delete(odp_actions);
-}
-
-/* Updates 'facet''s flow in the datapath setting its actions to 'actions_len'
- * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
- * in the datapath will be zeroed and 'stats' will be updated with traffic new
- * since 'facet' was last updated.
- *
- * Returns 0 if successful, otherwise a positive errno value.*/
-static int
-facet_put__(struct ofproto *ofproto, struct facet *facet,
- const struct nlattr *actions, size_t actions_len,
- struct dpif_flow_stats *stats)
-{
- struct odputil_keybuf keybuf;
- enum dpif_flow_put_flags flags;
- struct ofpbuf key;
- int ret;
-
- flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
- if (stats) {
- flags |= DPIF_FP_ZERO_STATS;
- }
-
- ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
- odp_flow_key_from_flow(&key, &facet->flow);
-
- ret = dpif_flow_put(ofproto->dpif, flags, key.data, key.size,
- actions, actions_len, stats);
-
- if (stats) {
- facet_reset_dp_stats(facet, stats);
- }
-
- return ret;
-}
-
-/* If 'facet' is installable, inserts or re-inserts it into 'p''s datapath. If
- * 'zero_stats' is true, clears any existing statistics from the datapath for
- * 'facet'. */
-static void
-facet_install(struct ofproto *p, struct facet *facet, bool zero_stats)
-{
- struct dpif_flow_stats stats;
-
- if (facet->may_install
- && !facet_put__(p, facet, facet->actions, facet->actions_len,
- zero_stats ? &stats : NULL)) {
- facet->installed = true;
- }
-}
-
-/* Ensures that the bytes in 'facet', plus 'extra_bytes', have been passed up
- * to the accounting hook function in the ofhooks structure. */
-static void
-facet_account(struct ofproto *ofproto,
- struct facet *facet, uint64_t extra_bytes)
-{
- uint64_t total_bytes = facet->byte_count + extra_bytes;
-
- if (ofproto->ofhooks->account_flow_cb
- && total_bytes > facet->accounted_bytes)
- {
- ofproto->ofhooks->account_flow_cb(
- &facet->flow, facet->tags, facet->actions, facet->actions_len,
- total_bytes - facet->accounted_bytes, ofproto->aux);
- facet->accounted_bytes = total_bytes;
- }
-}
-
-/* If 'rule' is installed in the datapath, uninstalls it. */
-static void
-facet_uninstall(struct ofproto *p, struct facet *facet)
-{
- if (facet->installed) {
- struct odputil_keybuf keybuf;
- struct dpif_flow_stats stats;
- struct ofpbuf key;
- int error;
-
- ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
- odp_flow_key_from_flow(&key, &facet->flow);
-
- error = dpif_flow_del(p->dpif, key.data, key.size, &stats);
- facet_reset_dp_stats(facet, &stats);
- if (!error) {
- facet_update_stats(p, facet, &stats);
- }
-
- facet->installed = false;
- } else {
- assert(facet->dp_packet_count == 0);
- assert(facet->dp_byte_count == 0);
- }
-}
-
-/* Returns true if the only action for 'facet' is to send to the controller.
- * (We don't report NetFlow expiration messages for such facets because they
- * are just part of the control logic for the network, not real traffic). */
-static bool
-facet_is_controller_flow(struct facet *facet)
-{
- return (facet
- && facet->rule->n_actions == 1
- && action_outputs_to_port(&facet->rule->actions[0],
- htons(OFPP_CONTROLLER)));
-}
-
-/* Resets 'facet''s datapath statistics counters. This should be called when
- * 'facet''s statistics are cleared in the datapath. If 'stats' is non-null,
- * it should contain the statistics returned by dpif when 'facet' was reset in
- * the datapath. 'stats' will be modified to only included statistics new
- * since 'facet' was last updated. */
-static void
-facet_reset_dp_stats(struct facet *facet, struct dpif_flow_stats *stats)
-{
- if (stats && facet->dp_packet_count <= stats->n_packets
- && facet->dp_byte_count <= stats->n_bytes) {
- stats->n_packets -= facet->dp_packet_count;
- stats->n_bytes -= facet->dp_byte_count;
- }
-
- facet->dp_packet_count = 0;
- facet->dp_byte_count = 0;
-}
-
-/* Folds all of 'facet''s statistics into its rule. Also updates the
- * accounting ofhook and emits a NetFlow expiration if appropriate. All of
- * 'facet''s statistics in the datapath should have been zeroed and folded into
- * its packet and byte counts before this function is called. */
-static void
-facet_flush_stats(struct ofproto *ofproto, struct facet *facet)
-{
- assert(!facet->dp_byte_count);
- assert(!facet->dp_packet_count);
-
- facet_push_stats(ofproto, facet);
- facet_account(ofproto, facet, 0);
-
- if (ofproto->netflow && !facet_is_controller_flow(facet)) {
- struct ofexpired expired;
- expired.flow = facet->flow;
- expired.packet_count = facet->packet_count;
- expired.byte_count = facet->byte_count;
- expired.used = facet->used;
- netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
- }
-
- facet->rule->packet_count += facet->packet_count;
- facet->rule->byte_count += facet->byte_count;
-
- /* Reset counters to prevent double counting if 'facet' ever gets
- * reinstalled. */
- facet->packet_count = 0;
- facet->byte_count = 0;
- facet->rs_packet_count = 0;
- facet->rs_byte_count = 0;
- facet->accounted_bytes = 0;
-
- netflow_flow_clear(&facet->nf_flow);
-}
-
-/* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
- * Returns it if found, otherwise a null pointer.
- *
- * The returned facet might need revalidation; use facet_lookup_valid()
- * instead if that is important. */
-static struct facet *
-facet_find(struct ofproto *ofproto, const struct flow *flow)
-{
- struct facet *facet;
-
- HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, flow_hash(flow, 0),
- &ofproto->facets) {
- if (flow_equal(flow, &facet->flow)) {
- return facet;
- }
- }
-
- return NULL;
-}
-
-/* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
- * Returns it if found, otherwise a null pointer.
- *
- * The returned facet is guaranteed to be valid. */
-static struct facet *
-facet_lookup_valid(struct ofproto *ofproto, const struct flow *flow)
-{
- struct facet *facet = facet_find(ofproto, flow);
-
- /* The facet we found might not be valid, since we could be in need of
- * revalidation. If it is not valid, don't return it. */
- if (facet
- && ofproto->need_revalidate
- && !facet_revalidate(ofproto, facet)) {
- COVERAGE_INC(ofproto_invalidated);
- return NULL;
- }
-
- return facet;
-}
-
-/* Re-searches 'ofproto''s classifier for a rule matching 'facet':
- *
- * - If the rule found is different from 'facet''s current rule, moves
- * 'facet' to the new rule and recompiles its actions.
- *
- * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
- * where it is and recompiles its actions anyway.
- *
- * - If there is none, destroys 'facet'.
- *
- * Returns true if 'facet' still exists, false if it has been destroyed. */
-static bool
-facet_revalidate(struct ofproto *ofproto, struct facet *facet)
-{
- struct action_xlate_ctx ctx;
- struct ofpbuf *odp_actions;
- struct rule *new_rule;
- bool actions_changed;
-
- COVERAGE_INC(facet_revalidate);
-
- /* Determine the new rule. */
- new_rule = rule_lookup(ofproto, &facet->flow);
- if (!new_rule) {
- /* No new rule, so delete the facet. */
- facet_remove(ofproto, facet);
- return false;
- }
-
- /* Calculate new ODP actions.
- *
- * We do not modify any 'facet' state yet, because we might need to, e.g.,
- * emit a NetFlow expiration and, if so, we need to have the old state
- * around to properly compose it. */
- action_xlate_ctx_init(&ctx, ofproto, &facet->flow, NULL);
- odp_actions = xlate_actions(&ctx, new_rule->actions, new_rule->n_actions);
- actions_changed = (facet->actions_len != odp_actions->size
- || memcmp(facet->actions, odp_actions->data,
- facet->actions_len));
-
- /* If the ODP actions changed or the installability changed, then we need
- * to talk to the datapath. */
- if (actions_changed || ctx.may_set_up_flow != facet->installed) {
- if (ctx.may_set_up_flow) {
- struct dpif_flow_stats stats;
-
- facet_put__(ofproto, facet,
- odp_actions->data, odp_actions->size, &stats);
- facet_update_stats(ofproto, facet, &stats);
- } else {
- facet_uninstall(ofproto, facet);
- }
-
- /* The datapath flow is gone or has zeroed stats, so push stats out of
- * 'facet' into 'rule'. */
- facet_flush_stats(ofproto, facet);
- }
-
- /* Update 'facet' now that we've taken care of all the old state. */
- facet->tags = ctx.tags;
- facet->nf_flow.output_iface = ctx.nf_output_iface;
- facet->may_install = ctx.may_set_up_flow;
- if (actions_changed) {
- free(facet->actions);
- facet->actions_len = odp_actions->size;
- facet->actions = xmemdup(odp_actions->data, odp_actions->size);
- }
- if (facet->rule != new_rule) {
- COVERAGE_INC(facet_changed_rule);
- list_remove(&facet->list_node);
- list_push_back(&new_rule->facets, &facet->list_node);
- facet->rule = new_rule;
- facet->used = new_rule->created;
- facet->rs_used = facet->used;
- }
-
- ofpbuf_delete(odp_actions);
-
- return true;
-}
-\f
-static void
-send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh,
- int error)
-{
- struct ofpbuf *buf = ofputil_encode_error_msg(error, oh);
- if (buf) {
- COVERAGE_INC(ofproto_error);
- ofconn_send_reply(ofconn, buf);
- }
-}
-
-static int
-handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
-{
- ofconn_send_reply(ofconn, make_echo_reply(oh));
- return 0;
-}
-
-static int
-handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
-{
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- struct ofp_switch_features *osf;
- struct ofpbuf *buf;
- struct ofport *port;
-
- osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf);
- osf->datapath_id = htonll(ofproto->datapath_id);
- osf->n_buffers = htonl(pktbuf_capacity());
- osf->n_tables = 2;
- osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS |
- OFPC_PORT_STATS | OFPC_ARP_MATCH_IP);
- osf->actions = htonl((1u << OFPAT_OUTPUT) |
- (1u << OFPAT_SET_VLAN_VID) |
- (1u << OFPAT_SET_VLAN_PCP) |
- (1u << OFPAT_STRIP_VLAN) |
- (1u << OFPAT_SET_DL_SRC) |
- (1u << OFPAT_SET_DL_DST) |
- (1u << OFPAT_SET_NW_SRC) |
- (1u << OFPAT_SET_NW_DST) |
- (1u << OFPAT_SET_NW_TOS) |
- (1u << OFPAT_SET_TP_SRC) |
- (1u << OFPAT_SET_TP_DST) |
- (1u << OFPAT_ENQUEUE));
-
- HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
- ofpbuf_put(buf, &port->opp, sizeof port->opp);
- }
-
- ofconn_send_reply(ofconn, buf);
- return 0;
-}
-
-static int
-handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
-{
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- struct ofpbuf *buf;
- struct ofp_switch_config *osc;
- uint16_t flags;
- bool drop_frags;
-
- /* Figure out flags. */
- dpif_get_drop_frags(ofproto->dpif, &drop_frags);
- flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL;
-
- /* Send reply. */
- osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf);
- osc->flags = htons(flags);
- osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn));
- ofconn_send_reply(ofconn, buf);
-
- return 0;
-}
-
-static int
-handle_set_config(struct ofconn *ofconn, const struct ofp_switch_config *osc)
-{
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- uint16_t flags = ntohs(osc->flags);
-
- if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
- && ofconn_get_role(ofconn) != NX_ROLE_SLAVE) {
- switch (flags & OFPC_FRAG_MASK) {
- case OFPC_FRAG_NORMAL:
- dpif_set_drop_frags(ofproto->dpif, false);
- break;
- case OFPC_FRAG_DROP:
- dpif_set_drop_frags(ofproto->dpif, true);
- break;
- default:
- VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")",
- osc->flags);
- break;
- }
- }
-
- ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len));
-
- return 0;
-}
-
-static void do_xlate_actions(const union ofp_action *in, size_t n_in,
- struct action_xlate_ctx *ctx);
-
-static void
-add_output_action(struct action_xlate_ctx *ctx, uint16_t port)
-{
- const struct ofport *ofport = get_port(ctx->ofproto, port);
-
- if (ofport) {
- if (ofport->opp.config & htonl(OFPPC_NO_FWD)) {
- /* Forwarding disabled on port. */
- return;
- }
- } else {
- /*
- * We don't have an ofport record for this port, but it doesn't hurt to
- * allow forwarding to it anyhow. Maybe such a port will appear later
- * and we're pre-populating the flow table.
- */
- }
-
- nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_OUTPUT, port);
- ctx->nf_output_iface = port;
-}
-
-static struct rule *
-rule_lookup(struct ofproto *ofproto, const struct flow *flow)
-{
- return rule_from_cls_rule(classifier_lookup(&ofproto->cls, flow));
-}
-
-static void
-xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port)
-{
- if (ctx->recurse < MAX_RESUBMIT_RECURSION) {
- uint16_t old_in_port;
- struct rule *rule;
-
- /* Look up a flow with 'in_port' as the input port. Then restore the
- * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
- * have surprising behavior). */
- old_in_port = ctx->flow.in_port;
- ctx->flow.in_port = in_port;
- rule = rule_lookup(ctx->ofproto, &ctx->flow);
- ctx->flow.in_port = old_in_port;
-
- if (ctx->resubmit_hook) {
- ctx->resubmit_hook(ctx, rule);
- }
-
- if (rule) {
- ctx->recurse++;
- do_xlate_actions(rule->actions, rule->n_actions, ctx);
- ctx->recurse--;
- }
- } else {
- static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1);
-
- VLOG_ERR_RL(&recurse_rl, "NXAST_RESUBMIT recursed over %d times",
- MAX_RESUBMIT_RECURSION);
- }
-}
-
-static void
-flood_packets(struct ofproto *ofproto, uint16_t odp_in_port, ovs_be32 mask,
- uint16_t *nf_output_iface, struct ofpbuf *odp_actions)
-{
- struct ofport *ofport;
-
- HMAP_FOR_EACH (ofport, hmap_node, &ofproto->ports) {
- uint16_t odp_port = ofport->odp_port;
- if (odp_port != odp_in_port && !(ofport->opp.config & mask)) {
- nl_msg_put_u32(odp_actions, ODP_ACTION_ATTR_OUTPUT, odp_port);
- }
- }
- *nf_output_iface = NF_OUT_FLOOD;
-}
-
-static void
-xlate_output_action__(struct action_xlate_ctx *ctx,
- uint16_t port, uint16_t max_len)
-{
- uint16_t odp_port;
- uint16_t prev_nf_output_iface = ctx->nf_output_iface;
-
- ctx->nf_output_iface = NF_OUT_DROP;
-
- switch (port) {
- case OFPP_IN_PORT:
- add_output_action(ctx, ctx->flow.in_port);
- break;
- case OFPP_TABLE:
- xlate_table_action(ctx, ctx->flow.in_port);
- break;
- case OFPP_NORMAL:
- if (!ctx->ofproto->ofhooks->normal_cb(&ctx->flow, ctx->packet,
- ctx->odp_actions, &ctx->tags,
- &ctx->nf_output_iface,
- ctx->ofproto->aux)) {
- COVERAGE_INC(ofproto_uninstallable);
- ctx->may_set_up_flow = false;
- }
- break;
- case OFPP_FLOOD:
- flood_packets(ctx->ofproto, ctx->flow.in_port, htonl(OFPPC_NO_FLOOD),
- &ctx->nf_output_iface, ctx->odp_actions);
- break;
- case OFPP_ALL:
- flood_packets(ctx->ofproto, ctx->flow.in_port, htonl(0),
- &ctx->nf_output_iface, ctx->odp_actions);
- break;
- case OFPP_CONTROLLER:
- nl_msg_put_u64(ctx->odp_actions, ODP_ACTION_ATTR_CONTROLLER, max_len);
- break;
- case OFPP_LOCAL:
- add_output_action(ctx, ODPP_LOCAL);
- break;
- default:
- odp_port = ofp_port_to_odp_port(port);
- if (odp_port != ctx->flow.in_port) {
- add_output_action(ctx, odp_port);
- }
- break;
- }
-
- if (prev_nf_output_iface == NF_OUT_FLOOD) {
- ctx->nf_output_iface = NF_OUT_FLOOD;
- } else if (ctx->nf_output_iface == NF_OUT_DROP) {
- ctx->nf_output_iface = prev_nf_output_iface;
- } else if (prev_nf_output_iface != NF_OUT_DROP &&
- ctx->nf_output_iface != NF_OUT_FLOOD) {
- ctx->nf_output_iface = NF_OUT_MULTI;
- }
-}
-
-static void
-xlate_output_action(struct action_xlate_ctx *ctx,
- const struct ofp_action_output *oao)
-{
- xlate_output_action__(ctx, ntohs(oao->port), ntohs(oao->max_len));
-}
-
-/* If the final ODP action in 'ctx' is "pop priority", drop it, as an
- * optimization, because we're going to add another action that sets the
- * priority immediately after, or because there are no actions following the
- * pop. */
-static void
-remove_pop_action(struct action_xlate_ctx *ctx)
-{
- if (ctx->odp_actions->size == ctx->last_pop_priority) {
- ctx->odp_actions->size -= NLA_ALIGN(NLA_HDRLEN);
- ctx->last_pop_priority = -1;
- }
-}
-
-static void
-add_pop_action(struct action_xlate_ctx *ctx)
-{
- if (ctx->odp_actions->size != ctx->last_pop_priority) {
- nl_msg_put_flag(ctx->odp_actions, ODP_ACTION_ATTR_POP_PRIORITY);
- ctx->last_pop_priority = ctx->odp_actions->size;
- }
-}
-
-static void
-xlate_enqueue_action(struct action_xlate_ctx *ctx,
- const struct ofp_action_enqueue *oae)
-{
- uint16_t ofp_port, odp_port;
- uint32_t priority;
- int error;
-
- error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(oae->queue_id),
- &priority);
- if (error) {
- /* Fall back to ordinary output action. */
- xlate_output_action__(ctx, ntohs(oae->port), 0);
- return;
- }
-
- /* Figure out ODP output port. */
- ofp_port = ntohs(oae->port);
- if (ofp_port != OFPP_IN_PORT) {
- odp_port = ofp_port_to_odp_port(ofp_port);
- } else {
- odp_port = ctx->flow.in_port;
- }
-
- /* Add ODP actions. */
- remove_pop_action(ctx);
- nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_SET_PRIORITY, priority);
- add_output_action(ctx, odp_port);
- add_pop_action(ctx);
-
- /* Update NetFlow output port. */
- if (ctx->nf_output_iface == NF_OUT_DROP) {
- ctx->nf_output_iface = odp_port;
- } else if (ctx->nf_output_iface != NF_OUT_FLOOD) {
- ctx->nf_output_iface = NF_OUT_MULTI;
- }
-}
-
-static void
-xlate_set_queue_action(struct action_xlate_ctx *ctx,
- const struct nx_action_set_queue *nasq)
+static int
+rule_execute(struct rule *rule, uint16_t in_port, struct ofpbuf *packet)
{
- uint32_t priority;
- int error;
-
- error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(nasq->queue_id),
- &priority);
- if (error) {
- /* Couldn't translate queue to a priority, so ignore. A warning
- * has already been logged. */
- return;
- }
+ struct flow flow;
- remove_pop_action(ctx);
- nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_SET_PRIORITY, priority);
-}
+ assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in));
-static void
-xlate_set_dl_tci(struct action_xlate_ctx *ctx)
-{
- ovs_be16 tci = ctx->flow.vlan_tci;
- if (!(tci & htons(VLAN_CFI))) {
- nl_msg_put_flag(ctx->odp_actions, ODP_ACTION_ATTR_STRIP_VLAN);
- } else {
- nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_TCI,
- tci & ~htons(VLAN_CFI));
- }
+ flow_extract(packet, 0, in_port, &flow);
+ return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet);
}
-struct xlate_reg_state {
- ovs_be16 vlan_tci;
- ovs_be64 tun_id;
-};
-
-static void
-save_reg_state(const struct action_xlate_ctx *ctx,
- struct xlate_reg_state *state)
+/* Returns true if 'rule' should be hidden from the controller.
+ *
+ * Rules with priority higher than UINT16_MAX are set up by ofproto itself
+ * (e.g. by in-band control) and are intentionally hidden from the
+ * controller. */
+static bool
+rule_is_hidden(const struct rule *rule)
{
- state->vlan_tci = ctx->flow.vlan_tci;
- state->tun_id = ctx->flow.tun_id;
+ return rule->cr.priority > UINT16_MAX;
}
-
+\f
static void
-update_reg_state(struct action_xlate_ctx *ctx,
- const struct xlate_reg_state *state)
+send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh,
+ int error)
{
- if (ctx->flow.vlan_tci != state->vlan_tci) {
- xlate_set_dl_tci(ctx);
- }
- if (ctx->flow.tun_id != state->tun_id) {
- nl_msg_put_be64(ctx->odp_actions,
- ODP_ACTION_ATTR_SET_TUNNEL, ctx->flow.tun_id);
+ struct ofpbuf *buf = ofputil_encode_error_msg(error, oh);
+ if (buf) {
+ COVERAGE_INC(ofproto_error);
+ ofconn_send_reply(ofconn, buf);
}
}
-static void
-xlate_nicira_action(struct action_xlate_ctx *ctx,
- const struct nx_action_header *nah)
-{
- const struct nx_action_resubmit *nar;
- const struct nx_action_set_tunnel *nast;
- const struct nx_action_set_queue *nasq;
- const struct nx_action_multipath *nam;
- const struct nx_action_autopath *naa;
- enum nx_action_subtype subtype = ntohs(nah->subtype);
- const struct ofhooks *ofhooks = ctx->ofproto->ofhooks;
- struct xlate_reg_state state;
- uint16_t autopath_port;
- ovs_be64 tun_id;
-
- assert(nah->vendor == htonl(NX_VENDOR_ID));
- switch (subtype) {
- case NXAST_RESUBMIT:
- nar = (const struct nx_action_resubmit *) nah;
- xlate_table_action(ctx, ofp_port_to_odp_port(ntohs(nar->in_port)));
- break;
-
- case NXAST_SET_TUNNEL:
- nast = (const struct nx_action_set_tunnel *) nah;
- tun_id = htonll(ntohl(nast->tun_id));
- nl_msg_put_be64(ctx->odp_actions, ODP_ACTION_ATTR_SET_TUNNEL, tun_id);
- ctx->flow.tun_id = tun_id;
- break;
-
- case NXAST_DROP_SPOOFED_ARP:
- if (ctx->flow.dl_type == htons(ETH_TYPE_ARP)) {
- nl_msg_put_flag(ctx->odp_actions,
- ODP_ACTION_ATTR_DROP_SPOOFED_ARP);
- }
- break;
-
- case NXAST_SET_QUEUE:
- nasq = (const struct nx_action_set_queue *) nah;
- xlate_set_queue_action(ctx, nasq);
- break;
-
- case NXAST_POP_QUEUE:
- add_pop_action(ctx);
- break;
-
- case NXAST_REG_MOVE:
- save_reg_state(ctx, &state);
- nxm_execute_reg_move((const struct nx_action_reg_move *) nah,
- &ctx->flow);
- update_reg_state(ctx, &state);
- break;
-
- case NXAST_REG_LOAD:
- save_reg_state(ctx, &state);
- nxm_execute_reg_load((const struct nx_action_reg_load *) nah,
- &ctx->flow);
- update_reg_state(ctx, &state);
- break;
-
- case NXAST_NOTE:
- /* Nothing to do. */
- break;
-
- case NXAST_SET_TUNNEL64:
- tun_id = ((const struct nx_action_set_tunnel64 *) nah)->tun_id;
- nl_msg_put_be64(ctx->odp_actions, ODP_ACTION_ATTR_SET_TUNNEL, tun_id);
- ctx->flow.tun_id = tun_id;
- break;
-
- case NXAST_MULTIPATH:
- nam = (const struct nx_action_multipath *) nah;
- multipath_execute(nam, &ctx->flow);
- break;
-
- case NXAST_AUTOPATH:
- naa = (const struct nx_action_autopath *) nah;
- autopath_port = (ofhooks->autopath_cb
- ? ofhooks->autopath_cb(&ctx->flow, ntohl(naa->id),
- &ctx->tags, ctx->ofproto->aux)
- : OFPP_NONE);
- autopath_execute(naa, &ctx->flow, autopath_port);
- break;
-
- /* If you add a new action here that modifies flow data, don't forget to
- * update the flow key in ctx->flow at the same time. */
-
- case NXAST_SNAT__OBSOLETE:
- default:
- VLOG_DBG_RL(&rl, "unknown Nicira action type %d", (int) subtype);
- break;
- }
+static int
+handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
+{
+ ofconn_send_reply(ofconn, make_echo_reply(oh));
+ return 0;
}
-static void
-do_xlate_actions(const union ofp_action *in, size_t n_in,
- struct action_xlate_ctx *ctx)
+static int
+handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
{
- struct actions_iterator iter;
- const union ofp_action *ia;
- const struct ofport *port;
-
- port = get_port(ctx->ofproto, ctx->flow.in_port);
- if (port && port->opp.config & htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP) &&
- port->opp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp)
- ? htonl(OFPPC_NO_RECV_STP)
- : htonl(OFPPC_NO_RECV))) {
- /* Drop this flow. */
- return;
- }
-
- for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) {
- enum ofp_action_type type = ntohs(ia->type);
- const struct ofp_action_dl_addr *oada;
-
- switch (type) {
- case OFPAT_OUTPUT:
- xlate_output_action(ctx, &ia->output);
- break;
-
- case OFPAT_SET_VLAN_VID:
- ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK);
- ctx->flow.vlan_tci |= ia->vlan_vid.vlan_vid | htons(VLAN_CFI);
- xlate_set_dl_tci(ctx);
- break;
+ struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
+ struct ofp_switch_features *osf;
+ struct ofpbuf *buf;
+ struct ofport *port;
+ bool arp_match_ip;
+ uint32_t actions;
- case OFPAT_SET_VLAN_PCP:
- ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK);
- ctx->flow.vlan_tci |= htons(
- (ia->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT) | VLAN_CFI);
- xlate_set_dl_tci(ctx);
- break;
+ ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, &actions);
+ assert(actions & (1 << OFPAT_OUTPUT)); /* sanity check */
- case OFPAT_STRIP_VLAN:
- ctx->flow.vlan_tci = htons(0);
- xlate_set_dl_tci(ctx);
- break;
+ osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf);
+ osf->datapath_id = htonll(ofproto->datapath_id);
+ osf->n_buffers = htonl(pktbuf_capacity());
+ osf->n_tables = ofproto->n_tables;
+ osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS |
+ OFPC_PORT_STATS);
+ if (arp_match_ip) {
+ osf->capabilities |= htonl(OFPC_ARP_MATCH_IP);
+ }
+ osf->actions = htonl(actions);
- case OFPAT_SET_DL_SRC:
- oada = ((struct ofp_action_dl_addr *) ia);
- nl_msg_put_unspec(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_SRC,
- oada->dl_addr, ETH_ADDR_LEN);
- memcpy(ctx->flow.dl_src, oada->dl_addr, ETH_ADDR_LEN);
- break;
+ HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
+ ofpbuf_put(buf, &port->opp, sizeof port->opp);
+ }
- case OFPAT_SET_DL_DST:
- oada = ((struct ofp_action_dl_addr *) ia);
- nl_msg_put_unspec(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_DST,
- oada->dl_addr, ETH_ADDR_LEN);
- memcpy(ctx->flow.dl_dst, oada->dl_addr, ETH_ADDR_LEN);
- break;
+ ofconn_send_reply(ofconn, buf);
+ return 0;
+}
- case OFPAT_SET_NW_SRC:
- nl_msg_put_be32(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_SRC,
- ia->nw_addr.nw_addr);
- ctx->flow.nw_src = ia->nw_addr.nw_addr;
- break;
+static int
+handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
+{
+ struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
+ struct ofpbuf *buf;
+ struct ofp_switch_config *osc;
+ uint16_t flags;
+ bool drop_frags;
- case OFPAT_SET_NW_DST:
- nl_msg_put_be32(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_DST,
- ia->nw_addr.nw_addr);
- ctx->flow.nw_dst = ia->nw_addr.nw_addr;
- break;
+ /* Figure out flags. */
+ drop_frags = ofproto->ofproto_class->get_drop_frags(ofproto);
+ flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL;
- case OFPAT_SET_NW_TOS:
- nl_msg_put_u8(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_TOS,
- ia->nw_tos.nw_tos);
- ctx->flow.nw_tos = ia->nw_tos.nw_tos;
- break;
+ /* Send reply. */
+ osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf);
+ osc->flags = htons(flags);
+ osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn));
+ ofconn_send_reply(ofconn, buf);
- case OFPAT_SET_TP_SRC:
- nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_TP_SRC,
- ia->tp_port.tp_port);
- ctx->flow.tp_src = ia->tp_port.tp_port;
- break;
+ return 0;
+}
- case OFPAT_SET_TP_DST:
- nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_TP_DST,
- ia->tp_port.tp_port);
- ctx->flow.tp_dst = ia->tp_port.tp_port;
- break;
+static int
+handle_set_config(struct ofconn *ofconn, const struct ofp_switch_config *osc)
+{
+ struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
+ uint16_t flags = ntohs(osc->flags);
- case OFPAT_VENDOR:
- xlate_nicira_action(ctx, (const struct nx_action_header *) ia);
+ if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
+ && ofconn_get_role(ofconn) != NX_ROLE_SLAVE) {
+ switch (flags & OFPC_FRAG_MASK) {
+ case OFPC_FRAG_NORMAL:
+ ofproto->ofproto_class->set_drop_frags(ofproto, false);
break;
-
- case OFPAT_ENQUEUE:
- xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia);
+ case OFPC_FRAG_DROP:
+ ofproto->ofproto_class->set_drop_frags(ofproto, true);
break;
-
default:
- VLOG_DBG_RL(&rl, "unknown action type %d", (int) type);
+ VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")",
+ osc->flags);
break;
}
}
-}
-
-static void
-action_xlate_ctx_init(struct action_xlate_ctx *ctx,
- struct ofproto *ofproto, const struct flow *flow,
- const struct ofpbuf *packet)
-{
- ctx->ofproto = ofproto;
- ctx->flow = *flow;
- ctx->packet = packet;
- ctx->resubmit_hook = NULL;
- ctx->check_special = true;
-}
-
-static void
-ofproto_process_cfm(struct ofproto *ofproto, const struct flow *flow,
- const struct ofpbuf *packet)
-{
- struct ofport *ofport;
-
- ofport = get_port(ofproto, flow->in_port);
- if (ofport && ofport->cfm) {
- cfm_process_heartbeat(ofport->cfm, packet);
- }
-}
-
-static struct ofpbuf *
-xlate_actions(struct action_xlate_ctx *ctx,
- const union ofp_action *in, size_t n_in)
-{
- COVERAGE_INC(ofproto_ofp2odp);
-
- ctx->odp_actions = ofpbuf_new(512);
- ctx->tags = 0;
- ctx->may_set_up_flow = true;
- ctx->nf_output_iface = NF_OUT_DROP;
- ctx->recurse = 0;
- ctx->last_pop_priority = -1;
-
- if (ctx->check_special && cfm_should_process_flow(&ctx->flow)) {
- if (ctx->packet) {
- ofproto_process_cfm(ctx->ofproto, &ctx->flow, ctx->packet);
- }
- ctx->may_set_up_flow = false;
- } else if (ctx->check_special
- && ctx->ofproto->ofhooks->special_cb
- && !ctx->ofproto->ofhooks->special_cb(&ctx->flow, ctx->packet,
- ctx->ofproto->aux)) {
- ctx->may_set_up_flow = false;
- } else {
- do_xlate_actions(in, n_in, ctx);
- }
- remove_pop_action(ctx);
-
- /* Check with in-band control to see if we're allowed to set up this
- * flow. */
- if (!connmgr_may_set_up_flow(ctx->ofproto->connmgr, &ctx->flow,
- ctx->odp_actions->data,
- ctx->odp_actions->size)) {
- ctx->may_set_up_flow = false;
- }
+ ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len));
- return ctx->odp_actions;
+ return 0;
}
/* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
struct ofp_packet_out *opo;
struct ofpbuf payload, *buffer;
union ofp_action *ofp_actions;
- struct action_xlate_ctx ctx;
- struct ofpbuf *odp_actions;
struct ofpbuf request;
struct flow flow;
size_t n_ofp_actions;
buffer = NULL;
}
- /* Extract flow, check actions. */
- flow_extract(&payload, 0, ofp_port_to_odp_port(ntohs(opo->in_port)),
- &flow);
- error = validate_actions(ofp_actions, n_ofp_actions, &flow, p->max_ports);
- if (error) {
- goto exit;
- }
-
- /* Send. */
- action_xlate_ctx_init(&ctx, p, &flow, &payload);
- odp_actions = xlate_actions(&ctx, ofp_actions, n_ofp_actions);
- dpif_execute(p->dpif, odp_actions->data, odp_actions->size, &payload);
- ofpbuf_delete(odp_actions);
-
-exit:
+ /* Send out packet. */
+ flow_extract(&payload, 0, ntohs(opo->in_port), &flow);
+ error = p->ofproto_class->packet_out(p, &payload, &flow,
+ ofp_actions, n_ofp_actions);
ofpbuf_delete(buffer);
- return 0;
+
+ return error;
}
static void
-update_port_config(struct ofproto *p, struct ofport *port,
- ovs_be32 config, ovs_be32 mask)
+update_port_config(struct ofport *port, ovs_be32 config, ovs_be32 mask)
{
+ ovs_be32 old_config = port->opp.config;
+
mask &= config ^ port->opp.config;
if (mask & htonl(OFPPC_PORT_DOWN)) {
if (config & htonl(OFPPC_PORT_DOWN)) {
netdev_turn_flags_on(port->netdev, NETDEV_UP, true);
}
}
-#define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | \
- OFPPC_NO_FWD | OFPPC_NO_FLOOD)
- if (mask & htonl(REVALIDATE_BITS)) {
- COVERAGE_INC(ofproto_costly_flags);
- port->opp.config ^= mask & htonl(REVALIDATE_BITS);
- p->need_revalidate = true;
- }
-#undef REVALIDATE_BITS
- if (mask & htonl(OFPPC_NO_PACKET_IN)) {
- port->opp.config ^= htonl(OFPPC_NO_PACKET_IN);
+
+ port->opp.config ^= mask & (htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP |
+ OFPPC_NO_FLOOD | OFPPC_NO_FWD |
+ OFPPC_NO_PACKET_IN));
+ if (port->opp.config != old_config) {
+ port->ofproto->ofproto_class->port_reconfigured(port, old_config);
}
}
return error;
}
- port = get_port(p, ofp_port_to_odp_port(ntohs(opm->port_no)));
+ port = ofproto_get_port(p, ntohs(opm->port_no));
if (!port) {
return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT);
} else if (memcmp(port->opp.hw_addr, opm->hw_addr, OFP_ETH_ALEN)) {
return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR);
} else {
- update_port_config(p, port, opm->config, opm->mask);
+ update_port_config(port, opm->config, opm->mask);
if (opm->advertise) {
netdev_set_advertisements(port->netdev, ntohl(opm->advertise));
}
struct ofproto *p = ofconn_get_ofproto(ofconn);
struct ofp_table_stats *ots;
struct ofpbuf *msg;
+ size_t i;
- msg = start_ofp_stats_reply(request, sizeof *ots * 2);
+ msg = start_ofp_stats_reply(request, sizeof *ots * p->n_tables);
- /* Classifier table. */
- ots = append_ofp_stats_reply(sizeof *ots, ofconn, &msg);
- memset(ots, 0, sizeof *ots);
- strcpy(ots->name, "classifier");
- ots->wildcards = htonl(OFPFW_ALL);
- ots->max_entries = htonl(1024 * 1024); /* An arbitrary big number. */
- ots->active_count = htonl(classifier_count(&p->cls));
- put_32aligned_be64(&ots->lookup_count, htonll(0)); /* XXX */
- put_32aligned_be64(&ots->matched_count, htonll(0)); /* XXX */
+ ots = ofpbuf_put_zeros(msg, sizeof *ots * p->n_tables);
+ for (i = 0; i < p->n_tables; i++) {
+ ots[i].table_id = i;
+ sprintf(ots[i].name, "table%d", i);
+ ots[i].wildcards = htonl(OFPFW_ALL);
+ ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */
+ ots[i].active_count = htonl(classifier_count(&p->tables[i]));
+ }
+
+ p->ofproto_class->get_tables(p, ots);
ofconn_send_reply(ofconn, msg);
return 0;
msg = start_ofp_stats_reply(oh, sizeof *ops * 16);
if (psr->port_no != htons(OFPP_NONE)) {
- port = get_port(p, ofp_port_to_odp_port(ntohs(psr->port_no)));
+ port = ofproto_get_port(p, ntohs(psr->port_no));
if (port) {
append_port_stat(port, ofconn, &msg);
}
put_ofp_flow_stats(struct ofconn *ofconn, struct rule *rule,
ovs_be16 out_port, struct ofpbuf **replyp)
{
+ struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
struct ofp_flow_stats *ofs;
uint64_t packet_count, byte_count;
size_t act_len, len;
act_len = sizeof *rule->actions * rule->n_actions;
len = offsetof(struct ofp_flow_stats, actions) + act_len;
- rule_get_stats(rule, &packet_count, &byte_count);
+ ofproto->ofproto_class->rule_get_stats(rule, &packet_count, &byte_count);
ofs = append_ofp_stats_reply(len, ofconn, replyp);
ofs->length = htons(len);
- ofs->table_id = 0;
+ ofs->table_id = rule->table_id;
ofs->pad = 0;
ofputil_cls_rule_to_match(&rule->cr, &ofs->match);
put_32aligned_be64(&ofs->cookie, rule->flow_cookie);
}
}
-static bool
-is_valid_table(uint8_t table_id)
+static struct classifier *
+first_matching_table(struct ofproto *ofproto, uint8_t table_id)
{
- if (table_id == 0 || table_id == 0xff) {
- return true;
+ if (table_id == 0xff) {
+ return &ofproto->tables[0];
+ } else if (table_id < ofproto->n_tables) {
+ return &ofproto->tables[table_id];
} else {
/* It would probably be better to reply with an error but there doesn't
* seem to be any appropriate value, so that might just be
* confusing. */
VLOG_WARN_RL(&rl, "controller asked for invalid table %"PRIu8,
table_id);
- return false;
+ return NULL;
}
}
+static struct classifier *
+next_matching_table(struct ofproto *ofproto,
+ struct classifier *cls, uint8_t table_id)
+{
+ return (table_id == 0xff && cls != &ofproto->tables[ofproto->n_tables - 1]
+ ? cls + 1
+ : NULL);
+}
+
+/* Assigns CLS to each classifier table, in turn, that matches TABLE_ID in
+ * OFPROTO:
+ *
+ * - If TABLE_ID is 0xff, this iterates over every classifier table in
+ * OFPROTO.
+ *
+ * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
+ * only once, for that table.
+ *
+ * - Otherwise, TABLE_ID isn't valid for OFPROTO, so ofproto logs a warning
+ * and does not enter the loop at all.
+ *
+ * All parameters are evaluated multiple times.
+ */
+#define FOR_EACH_MATCHING_TABLE(CLS, TABLE_ID, OFPROTO) \
+ for ((CLS) = first_matching_table(OFPROTO, TABLE_ID); \
+ (CLS) != NULL; \
+ (CLS) = next_matching_table(OFPROTO, CLS, TABLE_ID))
+
static int
handle_flow_stats_request(struct ofconn *ofconn, const struct ofp_header *oh)
{
const struct ofp_flow_stats_request *fsr = ofputil_stats_body(oh);
struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
+ struct classifier *cls;
+ struct cls_rule target;
struct ofpbuf *reply;
COVERAGE_INC(ofproto_flows_req);
reply = start_ofp_stats_reply(oh, 1024);
- if (is_valid_table(fsr->table_id)) {
+ ofputil_cls_rule_from_match(&fsr->match, 0, &target);
+ FOR_EACH_MATCHING_TABLE (cls, fsr->table_id, ofproto) {
struct cls_cursor cursor;
- struct cls_rule target;
struct rule *rule;
- ofputil_cls_rule_from_match(&fsr->match, 0, &target);
- cls_cursor_init(&cursor, &ofproto->cls, &target);
+ cls_cursor_init(&cursor, cls, &target);
CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
put_ofp_flow_stats(ofconn, rule, fsr->out_port, &reply);
}
return;
}
- rule_get_stats(rule, &packet_count, &byte_count);
+ rule->ofproto->ofproto_class->rule_get_stats(rule,
+ &packet_count, &byte_count);
act_len = sizeof *rule->actions * rule->n_actions;
{
struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
struct nx_flow_stats_request *nfsr;
+ struct classifier *cls;
struct cls_rule target;
struct ofpbuf *reply;
struct ofpbuf b;
COVERAGE_INC(ofproto_flows_req);
reply = start_nxstats_reply(&nfsr->nsm, 1024);
- if (is_valid_table(nfsr->table_id)) {
+ FOR_EACH_MATCHING_TABLE (cls, nfsr->table_id, ofproto) {
struct cls_cursor cursor;
struct rule *rule;
- cls_cursor_init(&cursor, &ofproto->cls, &target);
+ cls_cursor_init(&cursor, cls, &target);
CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
put_nx_flow_stats(ofconn, rule, nfsr->out_port, &reply);
}
uint64_t packet_count, byte_count;
size_t act_len = sizeof *rule->actions * rule->n_actions;
- rule_get_stats(rule, &packet_count, &byte_count);
+ rule->ofproto->ofproto_class->rule_get_stats(rule,
+ &packet_count, &byte_count);
+ if (rule->table_id != 0) {
+ ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id);
+ }
ds_put_format(results, "duration=%llds, ",
(time_msec() - rule->created) / 1000);
- ds_put_format(results, "idle=%.3fs, ", (time_msec() - rule->used) / 1000.0);
ds_put_format(results, "priority=%u, ", rule->cr.priority);
ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
void
ofproto_get_all_flows(struct ofproto *p, struct ds *results)
{
- struct cls_cursor cursor;
- struct rule *rule;
+ struct classifier *cls;
+
+ for (cls = &p->tables[0]; cls < &p->tables[p->n_tables]; cls++) {
+ struct cls_cursor cursor;
+ struct rule *rule;
- cls_cursor_init(&cursor, &p->cls, NULL);
- CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
- flow_stats_ds(rule, results);
+ cls_cursor_init(&cursor, cls, NULL);
+ CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
+ flow_stats_ds(rule, results);
+ }
}
}
+/* Obtains the NetFlow engine type and engine ID for 'ofproto' into
+ * '*engine_type' and '*engine_id', respectively. */
+void
+ofproto_get_netflow_ids(const struct ofproto *ofproto,
+ uint8_t *engine_type, uint8_t *engine_id)
+{
+ ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id);
+}
+
static void
query_aggregate_stats(struct ofproto *ofproto, struct cls_rule *target,
ovs_be16 out_port, uint8_t table_id,
{
uint64_t total_packets = 0;
uint64_t total_bytes = 0;
+ struct classifier *cls;
int n_flows = 0;
COVERAGE_INC(ofproto_agg_request);
- if (is_valid_table(table_id)) {
+ FOR_EACH_MATCHING_TABLE (cls, table_id, ofproto) {
struct cls_cursor cursor;
struct rule *rule;
- cls_cursor_init(&cursor, &ofproto->cls, target);
+ cls_cursor_init(&cursor, cls, target);
CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
if (!rule_is_hidden(rule) && rule_has_out_port(rule, out_port)) {
uint64_t packet_count;
uint64_t byte_count;
- rule_get_stats(rule, &packet_count, &byte_count);
+ ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
+ &byte_count);
total_packets += packet_count;
total_bytes += byte_count;
HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
handle_queue_stats_for_port(port, queue_id, &cbdata);
}
- } else if (port_no < ofproto->max_ports) {
- port = get_port(ofproto, ofp_port_to_odp_port(port_no));
+ } else if (port_no < OFPP_MAX) {
+ port = ofproto_get_port(ofproto, port_no);
if (port) {
handle_queue_stats_for_port(port, queue_id, &cbdata);
}
return 0;
}
-/* Updates 'facet''s used time. Caller is responsible for calling
- * facet_push_stats() to update the flows which 'facet' resubmits into. */
-static void
-facet_update_time(struct ofproto *ofproto, struct facet *facet,
- long long int used)
-{
- if (used > facet->used) {
- facet->used = used;
- if (used > facet->rule->used) {
- facet->rule->used = used;
- }
- netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, used);
- }
-}
-
-/* Folds the statistics from 'stats' into the counters in 'facet'.
- *
- * Because of the meaning of a facet's counters, it only makes sense to do this
- * if 'stats' are not tracked in the datapath, that is, if 'stats' represents a
- * packet that was sent by hand or if it represents statistics that have been
- * cleared out of the datapath. */
-static void
-facet_update_stats(struct ofproto *ofproto, struct facet *facet,
- const struct dpif_flow_stats *stats)
-{
- if (stats->n_packets || stats->used > facet->used) {
- facet_update_time(ofproto, facet, stats->used);
- facet->packet_count += stats->n_packets;
- facet->byte_count += stats->n_bytes;
- facet_push_stats(ofproto, facet);
- netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags);
- }
-}
-
-static void
-facet_push_stats(struct ofproto *ofproto, struct facet *facet)
-{
- uint64_t rs_packets, rs_bytes;
-
- assert(facet->packet_count >= facet->rs_packet_count);
- assert(facet->byte_count >= facet->rs_byte_count);
- assert(facet->used >= facet->rs_used);
-
- rs_packets = facet->packet_count - facet->rs_packet_count;
- rs_bytes = facet->byte_count - facet->rs_byte_count;
-
- if (rs_packets || rs_bytes || facet->used > facet->rs_used) {
- facet->rs_packet_count = facet->packet_count;
- facet->rs_byte_count = facet->byte_count;
- facet->rs_used = facet->used;
-
- flow_push_stats(ofproto, facet->rule, &facet->flow,
- rs_packets, rs_bytes, facet->used);
- }
-}
-
-struct ofproto_push {
- struct action_xlate_ctx ctx;
- uint64_t packets;
- uint64_t bytes;
- long long int used;
-};
-
-static void
-push_resubmit(struct action_xlate_ctx *ctx, struct rule *rule)
-{
- struct ofproto_push *push = CONTAINER_OF(ctx, struct ofproto_push, ctx);
-
- if (rule) {
- rule->packet_count += push->packets;
- rule->byte_count += push->bytes;
- rule->used = MAX(push->used, rule->used);
- }
-}
-
-/* Pushes flow statistics to the rules which 'flow' resubmits into given
- * 'rule''s actions. */
-static void
-flow_push_stats(struct ofproto *ofproto, const struct rule *rule,
- struct flow *flow, uint64_t packets, uint64_t bytes,
- long long int used)
-{
- struct ofproto_push push;
-
- push.packets = packets;
- push.bytes = bytes;
- push.used = used;
-
- action_xlate_ctx_init(&push.ctx, ofproto, flow, NULL);
- push.ctx.resubmit_hook = push_resubmit;
- ofpbuf_delete(xlate_actions(&push.ctx, rule->actions, rule->n_actions));
-}
-
/* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
* in which no matching flow already exists in the flow table.
*
struct ofpbuf *packet;
struct rule *rule;
uint16_t in_port;
+ int buf_err;
int error;
- if (fm->flags & OFPFF_CHECK_OVERLAP
- && classifier_rule_overlaps(&p->cls, &fm->cr)) {
- return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP);
+ if (fm->flags & OFPFF_CHECK_OVERLAP) {
+ struct classifier *cls;
+
+ FOR_EACH_MATCHING_TABLE (cls, fm->table_id, p) {
+ if (classifier_rule_overlaps(cls, &fm->cr)) {
+ return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP);
+ }
+ }
}
- error = 0;
- if (fm->buffer_id != UINT32_MAX) {
- error = ofconn_pktbuf_retrieve(ofconn, fm->buffer_id,
- &packet, &in_port);
- } else {
- packet = NULL;
- in_port = UINT16_MAX;
+ buf_err = ofconn_pktbuf_retrieve(ofconn, fm->buffer_id, &packet, &in_port);
+ error = rule_create(p, &fm->cr, fm->actions, fm->n_actions,
+ fm->idle_timeout, fm->hard_timeout, fm->cookie,
+ fm->flags & OFPFF_SEND_FLOW_REM, &rule);
+ if (error) {
+ ofpbuf_delete(packet);
+ return error;
}
- rule = rule_create(&fm->cr, fm->actions, fm->n_actions,
- fm->idle_timeout, fm->hard_timeout, fm->cookie,
- fm->flags & OFPFF_SEND_FLOW_REM);
- rule_insert(p, rule);
if (packet) {
- rule_execute(p, rule, in_port, packet);
+ assert(!buf_err);
+ return rule_execute(rule, in_port, packet);
}
- return error;
+ return buf_err;
}
-static struct rule *
-find_flow_strict(struct ofproto *p, const struct flow_mod *fm)
+/* Searches 'p' for an exact match for 'fm', in the table or tables indicated
+ * by fm->table_id. Returns 0 if no match was found, 1 if exactly one match
+ * was found, 2 if more than one match was found. If exactly one match is
+ * found, sets '*rulep' to the match, otherwise to NULL.
+ *
+ * This implements the rules for "strict" matching explained in the comment on
+ * struct nxt_flow_mod_table_id in nicira-ext.h.
+ *
+ * Ignores hidden rules. */
+static int
+find_flow_strict(struct ofproto *p, const struct flow_mod *fm,
+ struct rule **rulep)
{
- return rule_from_cls_rule(classifier_find_rule_exactly(&p->cls, &fm->cr));
+ struct classifier *cls;
+
+ *rulep = NULL;
+ FOR_EACH_MATCHING_TABLE (cls, fm->table_id, p) {
+ struct rule *rule;
+
+ rule = rule_from_cls_rule(classifier_find_rule_exactly(cls, &fm->cr));
+ if (rule && !rule_is_hidden(rule)) {
+ if (*rulep) {
+ *rulep = NULL;
+ return 2;
+ }
+ *rulep = rule;
+ }
+ }
+ return *rulep != NULL;
}
static int
send_buffered_packet(struct ofconn *ofconn,
struct rule *rule, uint32_t buffer_id)
{
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
struct ofpbuf *packet;
uint16_t in_port;
int error;
return error;
}
- rule_execute(ofproto, rule, in_port, packet);
-
- return 0;
+ return rule_execute(rule, in_port, packet);
}
\f
/* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
struct rule *match;
};
-static int modify_flow(struct ofproto *, const struct flow_mod *,
- struct rule *);
+static int modify_flow(const struct flow_mod *, struct rule *);
/* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as
* encoded by ofp_mkerr() on failure.
{
struct ofproto *p = ofconn_get_ofproto(ofconn);
struct rule *match = NULL;
- struct cls_cursor cursor;
- struct rule *rule;
+ struct classifier *cls;
+ int error;
+
+ error = 0;
+ FOR_EACH_MATCHING_TABLE (cls, fm->table_id, p) {
+ struct cls_cursor cursor;
+ struct rule *rule;
- cls_cursor_init(&cursor, &p->cls, &fm->cr);
- CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
- if (!rule_is_hidden(rule)) {
- match = rule;
- modify_flow(p, fm, rule);
+ cls_cursor_init(&cursor, cls, &fm->cr);
+ CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
+ if (!rule_is_hidden(rule)) {
+ int retval = modify_flow(fm, rule);
+ if (!retval) {
+ match = rule;
+ } else {
+ error = retval;
+ }
+ }
}
}
- if (match) {
+ if (error) {
+ return error;
+ } else if (match) {
/* This credits the packet to whichever flow happened to match last.
* That's weird. Maybe we should do a lookup for the flow that
* actually matches the packet? Who knows. */
modify_flow_strict(struct ofconn *ofconn, struct flow_mod *fm)
{
struct ofproto *p = ofconn_get_ofproto(ofconn);
- struct rule *rule = find_flow_strict(p, fm);
- if (rule && !rule_is_hidden(rule)) {
- modify_flow(p, fm, rule);
- return send_buffered_packet(ofconn, rule, fm->buffer_id);
- } else {
+ struct rule *rule;
+ int error;
+
+ switch (find_flow_strict(p, fm, &rule)) {
+ case 0:
return add_flow(ofconn, fm);
+
+ case 1:
+ error = modify_flow(fm, rule);
+ if (!error) {
+ error = send_buffered_packet(ofconn, rule, fm->buffer_id);
+ }
+ return error;
+
+ case 2:
+ return 0;
+
+ default:
+ NOT_REACHED();
}
}
/* 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). */
+ * been identified as a flow 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_flow(struct ofproto *p, const struct flow_mod *fm, struct rule *rule)
+modify_flow(const struct flow_mod *fm, struct rule *rule)
{
size_t actions_len = fm->n_actions * sizeof *rule->actions;
+ int error;
- rule->flow_cookie = fm->cookie;
-
- /* If the actions are the same, do nothing. */
if (fm->n_actions == rule->n_actions
&& (!fm->n_actions
|| !memcmp(fm->actions, rule->actions, actions_len))) {
- return 0;
+ error = 0;
+ } else {
+ error = rule->ofproto->ofproto_class->rule_modify_actions(
+ rule, fm->actions, fm->n_actions);
+ if (!error) {
+ free(rule->actions);
+ rule->actions = (fm->n_actions
+ ? xmemdup(fm->actions, actions_len)
+ : NULL);
+ rule->n_actions = fm->n_actions;
+ }
}
- /* Replace actions. */
- free(rule->actions);
- rule->actions = fm->n_actions ? xmemdup(fm->actions, actions_len) : NULL;
- rule->n_actions = fm->n_actions;
-
- p->need_revalidate = true;
+ if (!error) {
+ rule->flow_cookie = fm->cookie;
+ }
- return 0;
+ return error;
}
\f
/* OFPFC_DELETE implementation. */
-static void delete_flow(struct ofproto *, struct rule *, ovs_be16 out_port);
+static void delete_flow(struct rule *, ovs_be16 out_port);
/* Implements OFPFC_DELETE. */
static void
delete_flows_loose(struct ofproto *p, const struct flow_mod *fm)
{
- struct rule *rule, *next_rule;
- struct cls_cursor cursor;
+ struct classifier *cls;
+
+ FOR_EACH_MATCHING_TABLE (cls, fm->table_id, p) {
+ struct rule *rule, *next_rule;
+ struct cls_cursor cursor;
- cls_cursor_init(&cursor, &p->cls, &fm->cr);
- CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
- delete_flow(p, rule, htons(fm->out_port));
+ cls_cursor_init(&cursor, cls, &fm->cr);
+ CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
+ delete_flow(rule, htons(fm->out_port));
+ }
}
}
static void
delete_flow_strict(struct ofproto *p, struct flow_mod *fm)
{
- struct rule *rule = find_flow_strict(p, fm);
- if (rule) {
- delete_flow(p, rule, htons(fm->out_port));
+ struct rule *rule;
+ if (find_flow_strict(p, fm, &rule) == 1) {
+ delete_flow(rule, htons(fm->out_port));
}
}
* '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, ovs_be16 out_port)
+delete_flow(struct rule *rule, ovs_be16 out_port)
{
if (rule_is_hidden(rule)) {
return;
return;
}
- rule_send_removed(p, rule, OFPRR_DELETE);
- rule_remove(p, rule);
+ ofproto_rule_send_removed(rule, OFPRR_DELETE);
+ ofproto_rule_destroy(rule);
+}
+
+static void
+ofproto_rule_send_removed(struct rule *rule, uint8_t reason)
+{
+ struct ofputil_flow_removed fr;
+
+ if (rule_is_hidden(rule) || !rule->send_flow_removed) {
+ return;
+ }
+
+ fr.rule = rule->cr;
+ fr.cookie = rule->flow_cookie;
+ fr.reason = reason;
+ calc_flow_duration__(rule->created, &fr.duration_sec, &fr.duration_nsec);
+ fr.idle_timeout = rule->idle_timeout;
+ rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count,
+ &fr.byte_count);
+
+ connmgr_send_flow_removed(rule->ofproto->connmgr, &fr);
+}
+
+/* Sends an OpenFlow "flow removed" message with the given 'reason' (either
+ * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
+ * ofproto.
+ *
+ * ofproto implementation ->run() functions should use this function to expire
+ * OpenFlow flows. */
+void
+ofproto_rule_expire(struct rule *rule, uint8_t reason)
+{
+ assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT);
+ ofproto_rule_send_removed(rule, reason);
+ ofproto_rule_destroy(rule);
}
\f
static int
return error;
}
- error = ofputil_decode_flow_mod(&fm, oh);
+ error = ofputil_decode_flow_mod(&fm, oh,
+ ofconn_get_flow_mod_table_id(ofconn));
if (error) {
return error;
}
return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_ALL_TABLES_FULL);
}
- error = validate_actions(fm.actions, fm.n_actions,
- &fm.cr.flow, p->max_ports);
- if (error) {
- return error;
- }
-
switch (fm.command) {
case OFPFC_ADD:
return add_flow(ofconn, &fm);
return 0;
default:
+ if (fm.command > 0xff) {
+ VLOG_WARN_RL(&rl, "flow_mod has explicit table_id but "
+ "flow_mod_table_id extension is not enabled");
+ }
return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND);
}
}
return 0;
}
+static int
+handle_nxt_flow_mod_table_id(struct ofconn *ofconn,
+ const struct ofp_header *oh)
+{
+ const struct nxt_flow_mod_table_id *msg
+ = (const struct nxt_flow_mod_table_id *) oh;
+
+ ofconn_set_flow_mod_table_id(ofconn, msg->set != 0);
+ return 0;
+}
+
static int
handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh)
{
case OFPUTIL_NXT_ROLE_REQUEST:
return handle_role_request(ofconn, oh);
+ case OFPUTIL_NXT_FLOW_MOD_TABLE_ID:
+ return handle_nxt_flow_mod_table_id(ofconn, oh);
+
case OFPUTIL_NXT_SET_FLOW_FORMAT:
return handle_nxt_set_flow_format(ofconn, oh);
COVERAGE_INC(ofproto_recv_openflow);
}
\f
-static void
-handle_miss_upcall(struct ofproto *p, struct dpif_upcall *upcall)
-{
- struct facet *facet;
- struct flow flow;
-
- /* Obtain in_port and tun_id, at least. */
- odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
-
- /* Set header pointers in 'flow'. */
- flow_extract(upcall->packet, flow.tun_id, flow.in_port, &flow);
-
- if (cfm_should_process_flow(&flow)) {
- ofproto_process_cfm(p, &flow, upcall->packet);
- ofpbuf_delete(upcall->packet);
- return;
- } else if (p->ofhooks->special_cb
- && !p->ofhooks->special_cb(&flow, upcall->packet, p->aux)) {
- ofpbuf_delete(upcall->packet);
- return;
- }
-
- /* Check with in-band control to see if this packet should be sent
- * to the local port regardless of the flow table. */
- if (connmgr_msg_in_hook(p->connmgr, &flow, upcall->packet)) {
- ofproto_send_packet(p, ODPP_LOCAL, upcall->packet);
- }
-
- facet = facet_lookup_valid(p, &flow);
- if (!facet) {
- struct rule *rule = rule_lookup(p, &flow);
- if (!rule) {
- /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
- struct ofport *port = get_port(p, flow.in_port);
- if (port) {
- if (port->opp.config & htonl(OFPPC_NO_PACKET_IN)) {
- COVERAGE_INC(ofproto_no_packet_in);
- /* XXX install 'drop' flow entry */
- ofpbuf_delete(upcall->packet);
- return;
- }
- } else {
- VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16,
- flow.in_port);
- }
-
- COVERAGE_INC(ofproto_packet_in);
- send_packet_in(p, upcall, &flow, false);
- return;
- }
-
- facet = facet_create(p, rule, &flow, upcall->packet);
- } else if (!facet->may_install) {
- /* The facet is not installable, that is, we need to process every
- * packet, so process the current packet's actions into 'facet'. */
- facet_make_actions(p, facet, upcall->packet);
- }
-
- if (facet->rule->cr.priority == FAIL_OPEN_PRIORITY) {
- /*
- * Extra-special case for fail-open mode.
- *
- * We are in fail-open mode and the packet matched the fail-open rule,
- * but we are connected to a controller too. We should send the packet
- * up to the controller in the hope that it will try to set up a flow
- * and thereby allow us to exit fail-open.
- *
- * See the top-level comment in fail-open.c for more information.
- */
- send_packet_in(p, upcall, &flow, true);
- }
-
- facet_execute(p, facet, upcall->packet);
- facet_install(p, facet, false);
-}
-
-static void
-handle_upcall(struct ofproto *p, struct dpif_upcall *upcall)
-{
- struct flow flow;
-
- switch (upcall->type) {
- case DPIF_UC_ACTION:
- COVERAGE_INC(ofproto_ctlr_action);
- odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
- send_packet_in(p, upcall, &flow, false);
- break;
-
- case DPIF_UC_SAMPLE:
- if (p->sflow) {
- odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
- ofproto_sflow_received(p->sflow, upcall, &flow);
- }
- ofpbuf_delete(upcall->packet);
- break;
-
- case DPIF_UC_MISS:
- handle_miss_upcall(p, upcall);
- break;
-
- case DPIF_N_UC_TYPES:
- default:
- VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32, upcall->type);
- break;
- }
-}
-\f
-/* Flow expiration. */
-
-static int ofproto_dp_max_idle(const struct ofproto *);
-static void ofproto_update_stats(struct ofproto *);
-static void rule_expire(struct ofproto *, struct rule *);
-static void ofproto_expire_facets(struct ofproto *, int dp_max_idle);
-
-/* 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.
- *
- * Returns the number of milliseconds after which it should be called again. */
-static int
-ofproto_expire(struct ofproto *ofproto)
-{
- struct rule *rule, *next_rule;
- struct cls_cursor cursor;
- int dp_max_idle;
-
- /* Update stats for each flow in the datapath. */
- ofproto_update_stats(ofproto);
-
- /* Expire facets that have been idle too long. */
- dp_max_idle = ofproto_dp_max_idle(ofproto);
- ofproto_expire_facets(ofproto, dp_max_idle);
-
- /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
- cls_cursor_init(&cursor, &ofproto->cls, NULL);
- CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
- rule_expire(ofproto, rule);
- }
-
- /* 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);
- }
-
- return MIN(dp_max_idle, 1000);
-}
-
-/* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
- *
- * This function also pushes statistics updates to rules which each facet
- * resubmits into. Generally these statistics will be accurate. However, if a
- * facet changes the rule it resubmits into at some time in between
- * ofproto_update_stats() runs, it is possible that statistics accrued to the
- * old rule will be incorrectly attributed to the new rule. This could be
- * avoided by calling ofproto_update_stats() whenever rules are created or
- * deleted. However, the performance impact of making so many calls to the
- * datapath do not justify the benefit of having perfectly accurate statistics.
- */
-static void
-ofproto_update_stats(struct ofproto *p)
-{
- const struct dpif_flow_stats *stats;
- struct dpif_flow_dump dump;
- const struct nlattr *key;
- size_t key_len;
-
- dpif_flow_dump_start(&dump, p->dpif);
- while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) {
- struct facet *facet;
- struct flow flow;
-
- if (odp_flow_key_to_flow(key, key_len, &flow)) {
- struct ds s;
-
- ds_init(&s);
- odp_flow_key_format(key, key_len, &s);
- VLOG_WARN_RL(&rl, "failed to convert ODP flow key to flow: %s",
- ds_cstr(&s));
- ds_destroy(&s);
-
- continue;
- }
- facet = facet_find(p, &flow);
-
- if (facet && facet->installed) {
-
- if (stats->n_packets >= facet->dp_packet_count) {
- facet->packet_count += stats->n_packets - facet->dp_packet_count;
- } else {
- VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
- }
-
- if (stats->n_bytes >= facet->dp_byte_count) {
- facet->byte_count += stats->n_bytes - facet->dp_byte_count;
- } else {
- VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
- }
-
- facet->dp_packet_count = stats->n_packets;
- facet->dp_byte_count = stats->n_bytes;
-
- facet_update_time(p, facet, stats->used);
- facet_account(p, facet, stats->n_bytes);
- facet_push_stats(p, facet);
- } 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, key, key_len, NULL);
- }
- }
- dpif_flow_dump_done(&dump);
-}
-
-/* Calculates and returns the number of milliseconds of idle time after which
- * facets should expire from the datapath and we should fold their statistics
- * into their parent rules in userspace. */
-static int
-ofproto_dp_max_idle(const struct ofproto *ofproto)
-{
- /*
- * Idle time histogram.
- *
- * Most of the time a switch has a relatively small number of facets. When
- * this is the case we might as well keep statistics for all of them in
- * userspace and to cache them in the kernel datapath for performance as
- * well.
- *
- * As the number of facets increases, the memory required to maintain
- * statistics about them in userspace and in the kernel becomes
- * significant. However, with a large number of facets it is likely that
- * only a few of them are "heavy hitters" that consume a large amount of
- * bandwidth. At this point, only heavy hitters are worth caching in the
- * kernel and maintaining in userspaces; other facets we can discard.
- *
- * The technique used to compute the idle time is to build a histogram with
- * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each facet
- * that is installed in the kernel gets dropped in the appropriate bucket.
- * After the histogram has been built, we compute the cutoff so that only
- * the most-recently-used 1% of facets (but at least 1000 flows) are kept
- * cached. At least the most-recently-used bucket of facets is kept, so
- * actually an arbitrary number of facets can be kept in any given
- * expiration run (though the next run will delete most of those unless
- * they receive additional data).
- *
- * This requires a second pass through the facets, in addition to the pass
- * made by ofproto_update_stats(), because the former function never looks
- * at uninstallable facets.
- */
- enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) };
- enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
- int buckets[N_BUCKETS] = { 0 };
- struct facet *facet;
- int total, bucket;
- long long int now;
- int i;
-
- total = hmap_count(&ofproto->facets);
- if (total <= 1000) {
- return N_BUCKETS * BUCKET_WIDTH;
- }
-
- /* Build histogram. */
- now = time_msec();
- HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
- long long int idle = now - facet->used;
- int bucket = (idle <= 0 ? 0
- : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
- : (unsigned int) idle / BUCKET_WIDTH);
- buckets[bucket]++;
- }
-
- /* Find the first bucket whose flows should be expired. */
- for (bucket = 0; bucket < N_BUCKETS; bucket++) {
- if (buckets[bucket]) {
- int subtotal = 0;
- do {
- subtotal += buckets[bucket++];
- } while (bucket < N_BUCKETS && subtotal < MAX(1000, total / 100));
- break;
- }
- }
-
- if (VLOG_IS_DBG_ENABLED()) {
- struct ds s;
-
- ds_init(&s);
- ds_put_cstr(&s, "keep");
- for (i = 0; i < N_BUCKETS; i++) {
- if (i == bucket) {
- ds_put_cstr(&s, ", drop");
- }
- if (buckets[i]) {
- ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
- }
- }
- VLOG_INFO("%s: %s (msec:count)",
- dpif_name(ofproto->dpif), ds_cstr(&s));
- ds_destroy(&s);
- }
-
- return bucket * BUCKET_WIDTH;
-}
-
-static void
-facet_active_timeout(struct ofproto *ofproto, struct facet *facet)
-{
- if (ofproto->netflow && !facet_is_controller_flow(facet) &&
- netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
- struct ofexpired expired;
-
- if (facet->installed) {
- struct dpif_flow_stats stats;
-
- facet_put__(ofproto, facet, facet->actions, facet->actions_len,
- &stats);
- facet_update_stats(ofproto, facet, &stats);
- }
-
- expired.flow = facet->flow;
- expired.packet_count = facet->packet_count;
- expired.byte_count = facet->byte_count;
- expired.used = facet->used;
- netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
- }
-}
-
-static void
-ofproto_expire_facets(struct ofproto *ofproto, int dp_max_idle)
-{
- long long int cutoff = time_msec() - dp_max_idle;
- struct facet *facet, *next_facet;
-
- HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) {
- facet_active_timeout(ofproto, facet);
- if (facet->used < cutoff) {
- facet_remove(ofproto, facet);
- }
- }
-}
-
-/* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
- * then delete it entirely. */
-static void
-rule_expire(struct ofproto *ofproto, struct rule *rule)
-{
- struct facet *facet, *next_facet;
- long long int now;
- uint8_t reason;
-
- /* Has 'rule' expired? */
- now = time_msec();
- if (rule->hard_timeout
- && now > rule->created + rule->hard_timeout * 1000) {
- reason = OFPRR_HARD_TIMEOUT;
- } else if (rule->idle_timeout && list_is_empty(&rule->facets)
- && now >rule->used + rule->idle_timeout * 1000) {
- reason = OFPRR_IDLE_TIMEOUT;
- } else {
- return;
- }
-
- 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 facets left.) */
- LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
- facet_remove(ofproto, facet);
- }
-
- /* Get rid of the rule. */
- if (!rule_is_hidden(rule)) {
- rule_send_removed(ofproto, rule, reason);
- }
- rule_remove(ofproto, rule);
-}
-\f
-static void
-rule_send_removed(struct ofproto *p, struct rule *rule, uint8_t reason)
-{
- struct ofputil_flow_removed fr;
-
- if (!rule->send_flow_removed) {
- return;
- }
-
- fr.rule = rule->cr;
- fr.cookie = rule->flow_cookie;
- fr.reason = reason;
- calc_flow_duration__(rule->created, &fr.duration_sec, &fr.duration_nsec);
- fr.idle_timeout = rule->idle_timeout;
- fr.packet_count = rule->packet_count;
- fr.byte_count = rule->byte_count;
-
- connmgr_send_flow_removed(p->connmgr, &fr);
-}
-
-/* Obtains statistics for 'rule' and stores them in '*packets' and '*bytes'.
- * The returned statistics include statistics for all of 'rule''s facets. */
-static void
-rule_get_stats(const struct rule *rule, uint64_t *packets, uint64_t *bytes)
-{
- uint64_t p, b;
- struct facet *facet;
-
- /* Start from historical data for 'rule' itself that are no longer tracked
- * in facets. This counts, for example, facets that have expired. */
- p = rule->packet_count;
- b = rule->byte_count;
-
- /* Add any statistics that are tracked by facets. This includes
- * statistical data recently updated by ofproto_update_stats() as well as
- * stats for packets that were executed "by hand" via dpif_execute(). */
- LIST_FOR_EACH (facet, list_node, &rule->facets) {
- p += facet->packet_count;
- b += facet->byte_count;
- }
-
- *packets = p;
- *bytes = b;
-}
-
-/* Given 'upcall', of type DPIF_UC_ACTION or DPIF_UC_MISS, sends an
- * OFPT_PACKET_IN message to each OpenFlow controller as necessary according to
- * their individual configurations.
- *
- * If 'clone' is true, the caller retains ownership of 'upcall->packet'.
- * Otherwise, ownership is transferred to this function. */
-static void
-send_packet_in(struct ofproto *ofproto, struct dpif_upcall *upcall,
- const struct flow *flow, bool clone)
-{
- connmgr_send_packet_in(ofproto->connmgr, upcall, flow,
- clone ? NULL : upcall->packet);
-}
-
static uint64_t
pick_datapath_id(const struct ofproto *ofproto)
{
const struct ofport *port;
- port = get_port(ofproto, ODPP_LOCAL);
+ port = ofproto_get_port(ofproto, OFPP_LOCAL);
if (port) {
uint8_t ea[ETH_ADDR_LEN];
int error;
return eth_addr_to_uint64(ea);
}
\f
-static void
-ofproto_unixctl_list(struct unixctl_conn *conn, const char *arg OVS_UNUSED,
- void *aux OVS_UNUSED)
-{
- const struct shash_node *node;
- struct ds results;
-
- ds_init(&results);
- SHASH_FOR_EACH (node, &all_ofprotos) {
- ds_put_format(&results, "%s\n", node->name);
- }
- unixctl_command_reply(conn, 200, ds_cstr(&results));
- ds_destroy(&results);
-}
-
-struct ofproto_trace {
- struct action_xlate_ctx ctx;
- struct flow flow;
- struct ds *result;
-};
+/* unixctl commands. */
-static void
-trace_format_rule(struct ds *result, int level, const struct rule *rule)
+struct ofproto *
+ofproto_lookup(const char *name)
{
- ds_put_char_multiple(result, '\t', level);
- if (!rule) {
- ds_put_cstr(result, "No match\n");
- return;
- }
-
- ds_put_format(result, "Rule: cookie=%#"PRIx64" ",
- ntohll(rule->flow_cookie));
- cls_rule_format(&rule->cr, result);
- ds_put_char(result, '\n');
-
- ds_put_char_multiple(result, '\t', level);
- ds_put_cstr(result, "OpenFlow ");
- ofp_print_actions(result, (const struct ofp_action_header *) rule->actions,
- rule->n_actions * sizeof *rule->actions);
- ds_put_char(result, '\n');
-}
+ struct ofproto *ofproto;
-static void
-trace_format_flow(struct ds *result, int level, const char *title,
- struct ofproto_trace *trace)
-{
- ds_put_char_multiple(result, '\t', level);
- ds_put_format(result, "%s: ", title);
- if (flow_equal(&trace->ctx.flow, &trace->flow)) {
- ds_put_cstr(result, "unchanged");
- } else {
- flow_format(result, &trace->ctx.flow);
- trace->flow = trace->ctx.flow;
+ HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0),
+ &all_ofprotos) {
+ if (!strcmp(ofproto->name, name)) {
+ return ofproto;
+ }
}
- ds_put_char(result, '\n');
-}
-
-static void
-trace_resubmit(struct action_xlate_ctx *ctx, struct rule *rule)
-{
- struct ofproto_trace *trace = CONTAINER_OF(ctx, struct ofproto_trace, ctx);
- struct ds *result = trace->result;
-
- ds_put_char(result, '\n');
- trace_format_flow(result, ctx->recurse + 1, "Resubmitted flow", trace);
- trace_format_rule(result, ctx->recurse + 1, rule);
+ return NULL;
}
static void
-ofproto_unixctl_trace(struct unixctl_conn *conn, const char *args_,
- void *aux OVS_UNUSED)
+ofproto_unixctl_list(struct unixctl_conn *conn, const char *arg OVS_UNUSED,
+ void *aux OVS_UNUSED)
{
- char *dpname, *in_port_s, *tun_id_s, *packet_s;
- char *args = xstrdup(args_);
- char *save_ptr = NULL;
struct ofproto *ofproto;
- struct ofpbuf packet;
- struct rule *rule;
- struct ds result;
- struct flow flow;
- uint16_t in_port;
- ovs_be64 tun_id;
- char *s;
-
- ofpbuf_init(&packet, strlen(args) / 2);
- ds_init(&result);
-
- dpname = strtok_r(args, " ", &save_ptr);
- tun_id_s = strtok_r(NULL, " ", &save_ptr);
- in_port_s = strtok_r(NULL, " ", &save_ptr);
- packet_s = strtok_r(NULL, "", &save_ptr); /* Get entire rest of line. */
- if (!dpname || !in_port_s || !packet_s) {
- unixctl_command_reply(conn, 501, "Bad command syntax");
- goto exit;
- }
-
- ofproto = shash_find_data(&all_ofprotos, dpname);
- if (!ofproto) {
- unixctl_command_reply(conn, 501, "Unknown ofproto (use ofproto/list "
- "for help)");
- goto exit;
- }
-
- tun_id = htonll(strtoull(tun_id_s, NULL, 0));
- in_port = ofp_port_to_odp_port(atoi(in_port_s));
-
- packet_s = ofpbuf_put_hex(&packet, packet_s, NULL);
- packet_s += strspn(packet_s, " ");
- if (*packet_s != '\0') {
- unixctl_command_reply(conn, 501, "Trailing garbage in command");
- goto exit;
- }
- if (packet.size < ETH_HEADER_LEN) {
- unixctl_command_reply(conn, 501, "Packet data too short for Ethernet");
- goto exit;
- }
-
- ds_put_cstr(&result, "Packet: ");
- s = ofp_packet_to_string(packet.data, packet.size, packet.size);
- ds_put_cstr(&result, s);
- free(s);
-
- flow_extract(&packet, tun_id, in_port, &flow);
- ds_put_cstr(&result, "Flow: ");
- flow_format(&result, &flow);
- ds_put_char(&result, '\n');
+ struct ds results;
- rule = rule_lookup(ofproto, &flow);
- trace_format_rule(&result, 0, rule);
- if (rule) {
- struct ofproto_trace trace;
- struct ofpbuf *odp_actions;
-
- trace.result = &result;
- trace.flow = flow;
- action_xlate_ctx_init(&trace.ctx, ofproto, &flow, &packet);
- trace.ctx.resubmit_hook = trace_resubmit;
- odp_actions = xlate_actions(&trace.ctx,
- rule->actions, rule->n_actions);
-
- ds_put_char(&result, '\n');
- trace_format_flow(&result, 0, "Final flow", &trace);
- ds_put_cstr(&result, "Datapath actions: ");
- format_odp_actions(&result, odp_actions->data, odp_actions->size);
- ofpbuf_delete(odp_actions);
+ ds_init(&results);
+ HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) {
+ ds_put_format(&results, "%s\n", ofproto->name);
}
-
- unixctl_command_reply(conn, 200, ds_cstr(&result));
-
-exit:
- ds_destroy(&result);
- ofpbuf_uninit(&packet);
- free(args);
+ unixctl_command_reply(conn, 200, ds_cstr(&results));
+ ds_destroy(&results);
}
static void
registered = true;
unixctl_command_register("ofproto/list", ofproto_unixctl_list, NULL);
- unixctl_command_register("ofproto/trace", ofproto_unixctl_trace, NULL);
-}
-\f
-static bool
-default_normal_ofhook_cb(const struct flow *flow, const struct ofpbuf *packet,
- struct ofpbuf *odp_actions, tag_type *tags,
- uint16_t *nf_output_iface, void *ofproto_)
-{
- struct ofproto *ofproto = ofproto_;
- struct mac_entry *dst_mac;
-
- /* Drop frames for reserved multicast addresses. */
- if (eth_addr_is_reserved(flow->dl_dst)) {
- return true;
- }
-
- /* Learn source MAC (but don't try to learn from revalidation). */
- if (packet != NULL
- && mac_learning_may_learn(ofproto->ml, flow->dl_src, 0)) {
- struct mac_entry *src_mac;
-
- src_mac = mac_learning_insert(ofproto->ml, flow->dl_src, 0);
- if (mac_entry_is_new(src_mac) || src_mac->port.i != flow->in_port) {
- /* The log messages here could actually be useful in debugging,
- * so keep the rate limit relatively high. */
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
- VLOG_DBG_RL(&rl, "learned that "ETH_ADDR_FMT" is on port %"PRIu16,
- ETH_ADDR_ARGS(flow->dl_src), flow->in_port);
-
- ofproto_revalidate(ofproto,
- mac_learning_changed(ofproto->ml, src_mac));
- src_mac->port.i = flow->in_port;
- }
- }
-
- /* Determine output port. */
- dst_mac = mac_learning_lookup(ofproto->ml, flow->dl_dst, 0, tags);
- if (!dst_mac) {
- flood_packets(ofproto, flow->in_port, htonl(OFPPC_NO_FLOOD),
- nf_output_iface, odp_actions);
- } else {
- int out_port = dst_mac->port.i;
- if (out_port != flow->in_port) {
- nl_msg_put_u32(odp_actions, ODP_ACTION_ATTR_OUTPUT, out_port);
- *nf_output_iface = out_port;
- } else {
- /* Drop. */
- }
- }
-
- return true;
}
-
-static const struct ofhooks default_ofhooks = {
- default_normal_ofhook_cb,
- NULL,
- NULL,
- NULL,
- NULL
-};
git://git.onelab.eu / sliver-openvswitch.git / blobdiff