/*
- * Copyright (c) 2009, 2010, 2011 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011, 2012 Nicira Networks.
* Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
*
* Licensed under the Apache License, Version 2.0 (the "License");
#include "ofproto.h"
#include <errno.h>
#include <inttypes.h>
-#include <sys/socket.h>
-#include <net/if.h>
-#include <netinet/in.h>
#include <stdbool.h>
#include <stdlib.h>
-#include "autopath.h"
#include "bitmap.h"
-#include "bond.h"
#include "byte-order.h"
-#include "cfm.h"
#include "classifier.h"
#include "connmgr.h"
#include "coverage.h"
#include "dynamic-string.h"
-#include "fail-open.h"
#include "hash.h"
#include "hmap.h"
-#include "hmapx.h"
-#include "in-band.h"
-#include "lacp.h"
-#include "mac-learning.h"
-#include "multipath.h"
+#include "meta-flow.h"
#include "netdev.h"
-#include "netflow.h"
-#include "netlink.h"
#include "nx-match.h"
-#include "odp-util.h"
+#include "ofp-errors.h"
#include "ofp-print.h"
#include "ofp-util.h"
-#include "ofproto-sflow.h"
#include "ofpbuf.h"
+#include "ofproto-provider.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 "private.h"
-#include "rconn.h"
+#include "random.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 "vlan-bitmap.h"
#include "vlog.h"
VLOG_DEFINE_THIS_MODULE(ofproto);
-COVERAGE_DEFINE(odp_overflow);
-COVERAGE_DEFINE(ofproto_agg_request);
-COVERAGE_DEFINE(ofproto_costly_flags);
-COVERAGE_DEFINE(ofproto_ctlr_action);
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);
-static void ofport_destroy__(struct ofport *);
-static void ofport_destroy(struct ofport *);
+enum ofproto_state {
+ S_OPENFLOW, /* Processing OpenFlow commands. */
+ S_EVICT, /* Evicting flows from over-limit tables. */
+ S_FLUSH, /* Deleting all flow table rules. */
+};
-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);
+enum ofoperation_type {
+ OFOPERATION_ADD,
+ OFOPERATION_DELETE,
+ OFOPERATION_MODIFY
+};
-static uint64_t pick_datapath_id(const struct ofproto *);
-static uint64_t pick_fallback_dpid(void);
+/* A single OpenFlow request can execute any number of operations. The
+ * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the
+ * ofconn to which an error reply should be sent if necessary.
+ *
+ * ofproto initiates some operations internally. These operations are still
+ * assigned to groups but will not have an associated ofconn. */
+struct ofopgroup {
+ struct ofproto *ofproto; /* Owning ofproto. */
+ struct list ofproto_node; /* In ofproto's "pending" list. */
+ struct list ops; /* List of "struct ofoperation"s. */
+
+ /* Data needed to send OpenFlow reply on failure or to send a buffered
+ * packet on success.
+ *
+ * If list_is_empty(ofconn_node) then this ofopgroup never had an
+ * associated ofconn or its ofconn's connection dropped after it initiated
+ * the operation. In the latter case 'ofconn' is a wild pointer that
+ * refers to freed memory, so the 'ofconn' member must be used only if
+ * !list_is_empty(ofconn_node).
+ */
+ struct list ofconn_node; /* In ofconn's list of pending opgroups. */
+ struct ofconn *ofconn; /* ofconn for reply (but see note above). */
+ struct ofp_header *request; /* Original request (truncated at 64 bytes). */
+ uint32_t buffer_id; /* Buffer id from original request. */
+ int error; /* 0 if no error yet, otherwise error code. */
+};
-static void ofproto_destroy__(struct ofproto *);
-static void ofproto_flush_flows__(struct ofproto *);
+static struct ofopgroup *ofopgroup_create_unattached(struct ofproto *);
+static struct ofopgroup *ofopgroup_create(struct ofproto *, struct ofconn *,
+ const struct ofp_header *,
+ uint32_t buffer_id);
+static void ofopgroup_submit(struct ofopgroup *);
+static void ofopgroup_destroy(struct ofopgroup *);
+
+/* A single flow table operation. */
+struct ofoperation {
+ struct ofopgroup *group; /* Owning group. */
+ struct list group_node; /* In ofopgroup's "ops" list. */
+ struct hmap_node hmap_node; /* In ofproto's "deletions" hmap. */
+ struct rule *rule; /* Rule being operated upon. */
+ enum ofoperation_type type; /* Type of operation. */
+ int status; /* -1 if pending, otherwise 0 or error code. */
+ struct rule *victim; /* OFOPERATION_ADDING: Replaced rule. */
+ union ofp_action *actions; /* OFOPERATION_MODIFYING: Replaced actions. */
+ int n_actions; /* OFOPERATION_MODIFYING: # of old actions. */
+ ovs_be64 flow_cookie; /* Rule's old flow cookie. */
+};
-static void ofproto_rule_destroy__(struct rule *);
-static void ofproto_rule_send_removed(struct rule *, uint8_t reason);
-static void ofproto_rule_remove(struct rule *);
+static void ofoperation_create(struct ofopgroup *, struct rule *,
+ enum ofoperation_type);
+static void ofoperation_destroy(struct ofoperation *);
+
+/* oftable. */
+static void oftable_init(struct oftable *);
+static void oftable_destroy(struct oftable *);
+
+static void oftable_set_name(struct oftable *, const char *name);
+
+static void oftable_disable_eviction(struct oftable *);
+static void oftable_enable_eviction(struct oftable *,
+ const struct mf_subfield *fields,
+ size_t n_fields);
+
+static void oftable_remove_rule(struct rule *);
+static struct rule *oftable_replace_rule(struct rule *);
+static void oftable_substitute_rule(struct rule *old, struct rule *new);
-static void handle_openflow(struct ofconn *, struct ofpbuf *);
+/* A set of rules within a single OpenFlow table (oftable) that have the same
+ * values for the oftable's eviction_fields. A rule to be evicted, when one is
+ * needed, is taken from the eviction group that contains the greatest number
+ * of rules.
+ *
+ * An oftable owns any number of eviction groups, each of which contains any
+ * number of rules.
+ *
+ * Membership in an eviction group is imprecise, based on the hash of the
+ * oftable's eviction_fields (in the eviction_group's id_node.hash member).
+ * That is, if two rules have different eviction_fields, but those
+ * eviction_fields hash to the same value, then they will belong to the same
+ * eviction_group anyway.
+ *
+ * (When eviction is not enabled on an oftable, we don't track any eviction
+ * groups, to save time and space.) */
+struct eviction_group {
+ struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */
+ struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */
+ struct heap rules; /* Contains "struct rule"s. */
+};
+
+static struct rule *choose_rule_to_evict(struct oftable *);
+static void ofproto_evict(struct ofproto *);
+static uint32_t rule_eviction_priority(struct rule *);
+
+/* ofport. */
+static void ofport_destroy__(struct ofport *);
+static void ofport_destroy(struct ofport *);
static void update_port(struct ofproto *, const char *devname);
static int init_ports(struct ofproto *);
static void reinit_ports(struct ofproto *);
+/* rule. */
+static void ofproto_rule_destroy__(struct rule *);
+static void ofproto_rule_send_removed(struct rule *, uint8_t reason);
+static bool rule_is_modifiable(const struct rule *);
+static bool rule_is_hidden(const struct rule *);
+
+/* OpenFlow. */
+static enum ofperr add_flow(struct ofproto *, struct ofconn *,
+ const struct ofputil_flow_mod *,
+ const struct ofp_header *);
+static void delete_flow__(struct rule *, struct ofopgroup *);
+static bool handle_openflow(struct ofconn *, struct ofpbuf *);
+static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *,
+ const struct ofputil_flow_mod *,
+ const struct ofp_header *);
+
+/* ofproto. */
+static uint64_t pick_datapath_id(const struct ofproto *);
+static uint64_t pick_fallback_dpid(void);
+static void ofproto_destroy__(struct ofproto *);
+static void set_internal_devs_mtu(struct ofproto *);
+
+/* unixctl. */
static void ofproto_unixctl_init(void);
/* All registered ofproto classes, in probe order. */
static size_t n_ofproto_classes;
static size_t allocated_ofproto_classes;
-/* Map from dpif name to struct ofproto, for use by unixctl commands. */
+/* Map from datapath name to struct ofproto, for use by unixctl commands. */
static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos);
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
hmap_insert(&all_ofprotos, &ofproto->hmap_node,
hash_string(ofproto->name, 0));
ofproto->datapath_id = 0;
+ ofproto_set_flow_eviction_threshold(ofproto,
+ OFPROTO_FLOW_EVICTON_THRESHOLD_DEFAULT);
+ ofproto->forward_bpdu = false;
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();
+ ofproto->frag_handling = OFPC_FRAG_NORMAL;
hmap_init(&ofproto->ports);
shash_init(&ofproto->port_by_name);
- classifier_init(&ofproto->cls);
+ ofproto->tables = NULL;
+ ofproto->n_tables = 0;
ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name);
+ ofproto->state = S_OPENFLOW;
+ list_init(&ofproto->pending);
+ ofproto->n_pending = 0;
+ hmap_init(&ofproto->deletions);
+ ofproto->vlan_bitmap = NULL;
+ ofproto->vlans_changed = false;
error = ofproto->ofproto_class->construct(ofproto);
if (error) {
return error;
}
+ assert(ofproto->n_tables);
+
ofproto->datapath_id = pick_datapath_id(ofproto);
VLOG_INFO("using datapath ID %016"PRIx64, ofproto->datapath_id);
init_ports(ofproto);
return 0;
}
+void
+ofproto_init_tables(struct ofproto *ofproto, int n_tables)
+{
+ struct oftable *table;
+
+ assert(!ofproto->n_tables);
+ assert(n_tables >= 1 && n_tables <= 255);
+
+ ofproto->n_tables = n_tables;
+ ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables);
+ OFPROTO_FOR_EACH_TABLE (table, ofproto) {
+ oftable_init(table);
+ }
+}
+
void
ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
{
connmgr_set_in_band_queue(ofproto->connmgr, queue_id);
}
+/* Sets the number of flows at which eviction from the kernel flow table
+ * will occur. */
+void
+ofproto_set_flow_eviction_threshold(struct ofproto *ofproto, unsigned threshold)
+{
+ if (threshold < OFPROTO_FLOW_EVICTION_THRESHOLD_MIN) {
+ ofproto->flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_MIN;
+ } else {
+ ofproto->flow_eviction_threshold = threshold;
+ }
+}
+
+/* If forward_bpdu is true, the NORMAL action will forward frames with
+ * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false,
+ * the NORMAL action will drop these frames. */
+void
+ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu)
+{
+ bool old_val = ofproto->forward_bpdu;
+ ofproto->forward_bpdu = forward_bpdu;
+ if (old_val != ofproto->forward_bpdu) {
+ if (ofproto->ofproto_class->forward_bpdu_changed) {
+ ofproto->ofproto_class->forward_bpdu_changed(ofproto);
+ }
+ }
+}
+
+/* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to
+ * 'idle_time', in seconds. */
+void
+ofproto_set_mac_idle_time(struct ofproto *ofproto, unsigned idle_time)
+{
+ if (ofproto->ofproto_class->set_mac_idle_time) {
+ ofproto->ofproto_class->set_mac_idle_time(ofproto, idle_time);
+ }
+}
+
void
ofproto_set_desc(struct ofproto *p,
const char *mfr_desc, const char *hw_desc,
}
}
\f
+/* Spanning Tree Protocol (STP) configuration. */
+
+/* Configures STP on 'ofproto' using the settings defined in 's'. If
+ * 's' is NULL, disables STP.
+ *
+ * Returns 0 if successful, otherwise a positive errno value. */
+int
+ofproto_set_stp(struct ofproto *ofproto,
+ const struct ofproto_stp_settings *s)
+{
+ return (ofproto->ofproto_class->set_stp
+ ? ofproto->ofproto_class->set_stp(ofproto, s)
+ : EOPNOTSUPP);
+}
+
+/* Retrieves STP status of 'ofproto' and stores it in 's'. If the
+ * 'enabled' member of 's' is false, then the other members are not
+ * meaningful.
+ *
+ * Returns 0 if successful, otherwise a positive errno value. */
+int
+ofproto_get_stp_status(struct ofproto *ofproto,
+ struct ofproto_stp_status *s)
+{
+ return (ofproto->ofproto_class->get_stp_status
+ ? ofproto->ofproto_class->get_stp_status(ofproto, s)
+ : EOPNOTSUPP);
+}
+
+/* Configures STP on 'ofp_port' of 'ofproto' using the settings defined
+ * in 's'. The caller is responsible for assigning STP port numbers
+ * (using the 'port_num' member in the range of 1 through 255, inclusive)
+ * and ensuring there are no duplicates. If the 's' is NULL, then STP
+ * is disabled on the port.
+ *
+ * Returns 0 if successful, otherwise a positive errno value.*/
+int
+ofproto_port_set_stp(struct ofproto *ofproto, uint16_t ofp_port,
+ const struct ofproto_port_stp_settings *s)
+{
+ struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
+ if (!ofport) {
+ VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16,
+ ofproto->name, ofp_port);
+ return ENODEV;
+ }
+
+ return (ofproto->ofproto_class->set_stp_port
+ ? ofproto->ofproto_class->set_stp_port(ofport, s)
+ : EOPNOTSUPP);
+}
+
+/* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in
+ * 's'. If the 'enabled' member in 's' is false, then the other members
+ * are not meaningful.
+ *
+ * Returns 0 if successful, otherwise a positive errno value.*/
+int
+ofproto_port_get_stp_status(struct ofproto *ofproto, uint16_t ofp_port,
+ struct ofproto_port_stp_status *s)
+{
+ struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
+ if (!ofport) {
+ VLOG_WARN("%s: cannot get STP status on nonexistent port %"PRIu16,
+ ofproto->name, ofp_port);
+ return ENODEV;
+ }
+
+ return (ofproto->ofproto_class->get_stp_port_status
+ ? ofproto->ofproto_class->get_stp_port_status(ofport, s)
+ : EOPNOTSUPP);
+}
+\f
+/* Queue DSCP configuration. */
+
+/* Registers meta-data associated with the 'n_qdscp' Qualities of Service
+ * 'queues' attached to 'ofport'. This data is not intended to be sufficient
+ * to implement QoS. Instead, it is used to implement features which require
+ * knowledge of what queues exist on a port, and some basic information about
+ * them.
+ *
+ * Returns 0 if successful, otherwise a positive errno value. */
+int
+ofproto_port_set_queues(struct ofproto *ofproto, uint16_t ofp_port,
+ const struct ofproto_port_queue *queues,
+ size_t n_queues)
+{
+ struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
+
+ if (!ofport) {
+ VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16,
+ ofproto->name, ofp_port);
+ return ENODEV;
+ }
+
+ return (ofproto->ofproto_class->set_queues
+ ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues)
+ : EOPNOTSUPP);
+}
+\f
/* Connectivity Fault Management configuration. */
/* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
{
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);
+ ofproto->ofproto_class->set_cfm(ofport, NULL);
}
}
/* 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'.
+ * basic configuration from the configuration members in 'cfm', and the remote
+ * maintenance point ID from remote_mpid. Ignores the statistics members of
+ * 'cfm'.
*
* This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
void
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)
+ const struct cfm_settings *s)
{
struct ofport *ofport;
int error;
return;
}
+ /* XXX: For configuration simplicity, we only support one remote_mpid
+ * outside of the CFM module. It's not clear if this is the correct long
+ * term solution or not. */
error = (ofproto->ofproto_class->set_cfm
- ? ofproto->ofproto_class->set_cfm(ofport, cfm,
- remote_mps, n_remote_mps)
+ ? ofproto->ofproto_class->set_cfm(ofport, s)
: EOPNOTSUPP);
if (error) {
VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)",
}
}
-/* 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;
-
- ofport = ofproto_get_port(ofproto, ofp_port);
- return (ofport
- && ofproto->ofproto_class->get_cfm
- && !ofproto->ofproto_class->get_cfm(ofport, &cfm)) ? 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
\f
/* 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. */
+ * to 's'. Otherwise, this function registers a new mirror. */
int
ofproto_mirror_register(struct ofproto *ofproto, void *aux,
const struct ofproto_mirror_settings *s)
return ofproto_mirror_register(ofproto, aux, NULL);
}
+/* Retrieves statistics from mirror associated with client data pointer
+ * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and
+ * 'bytes', respectively. If a particular counters is not supported,
+ * the appropriate argument is set to UINT64_MAX. */
+int
+ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux,
+ uint64_t *packets, uint64_t *bytes)
+{
+ if (!ofproto->ofproto_class->mirror_get_stats) {
+ *packets = *bytes = UINT64_MAX;
+ return EOPNOTSUPP;
+ }
+
+ return ofproto->ofproto_class->mirror_get_stats(ofproto, aux,
+ packets, bytes);
+}
+
/* 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.
/* 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)
+ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux)
{
return (ofproto->ofproto_class->is_mirror_output_bundle
? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux)
: false);
}
\f
+/* Configuration of OpenFlow tables. */
+
+/* Returns the number of OpenFlow tables in 'ofproto'. */
+int
+ofproto_get_n_tables(const struct ofproto *ofproto)
+{
+ return ofproto->n_tables;
+}
+
+/* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the
+ * settings from 's'. 'table_id' must be in the range 0 through the number of
+ * OpenFlow tables in 'ofproto' minus 1, inclusive.
+ *
+ * For read-only tables, only the name may be configured. */
+void
+ofproto_configure_table(struct ofproto *ofproto, int table_id,
+ const struct ofproto_table_settings *s)
+{
+ struct oftable *table;
+
+ assert(table_id >= 0 && table_id < ofproto->n_tables);
+ table = &ofproto->tables[table_id];
+
+ oftable_set_name(table, s->name);
+
+ if (table->flags & OFTABLE_READONLY) {
+ return;
+ }
+
+ if (s->groups) {
+ oftable_enable_eviction(table, s->groups, s->n_groups);
+ } else {
+ oftable_disable_eviction(table);
+ }
+
+ table->max_flows = s->max_flows;
+ if (classifier_count(&table->cls) > table->max_flows
+ && table->eviction_fields) {
+ /* 'table' contains more flows than allowed. We might not be able to
+ * evict them right away because of the asynchronous nature of flow
+ * table changes. Schedule eviction for later. */
+ switch (ofproto->state) {
+ case S_OPENFLOW:
+ ofproto->state = S_EVICT;
+ break;
+ case S_EVICT:
+ case S_FLUSH:
+ /* We're already deleting flows, nothing more to do. */
+ break;
+ }
+ }
+}
+\f
bool
ofproto_has_snoops(const struct ofproto *ofproto)
{
connmgr_get_snoops(ofproto->connmgr, snoops);
}
+static void
+ofproto_flush__(struct ofproto *ofproto)
+{
+ struct ofopgroup *group;
+ struct oftable *table;
+
+ if (ofproto->ofproto_class->flush) {
+ ofproto->ofproto_class->flush(ofproto);
+ }
+
+ group = ofopgroup_create_unattached(ofproto);
+ OFPROTO_FOR_EACH_TABLE (table, ofproto) {
+ struct rule *rule, *next_rule;
+ struct cls_cursor cursor;
+
+ if (table->flags & OFTABLE_HIDDEN) {
+ continue;
+ }
+
+ cls_cursor_init(&cursor, &table->cls, NULL);
+ CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
+ if (!rule->pending) {
+ ofoperation_create(group, rule, OFOPERATION_DELETE);
+ oftable_remove_rule(rule);
+ ofproto->ofproto_class->rule_destruct(rule);
+ }
+ }
+ }
+ ofopgroup_submit(group);
+}
+
static void
ofproto_destroy__(struct ofproto *ofproto)
{
+ struct oftable *table;
+
+ assert(list_is_empty(&ofproto->pending));
+ assert(!ofproto->n_pending);
+
connmgr_destroy(ofproto->connmgr);
hmap_remove(&all_ofprotos, &ofproto->hmap_node);
free(ofproto->name);
+ free(ofproto->type);
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);
- classifier_destroy(&ofproto->cls);
+
+ OFPROTO_FOR_EACH_TABLE (table, ofproto) {
+ oftable_destroy(table);
+ }
+ free(ofproto->tables);
+
+ hmap_destroy(&ofproto->deletions);
+
+ free(ofproto->vlan_bitmap);
ofproto->ofproto_class->dealloc(ofproto);
}
return;
}
- ofproto_flush_flows__(p);
+ ofproto_flush__(p);
HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) {
- hmap_remove(&p->ports, &ofport->hmap_node);
ofport_destroy(ofport);
}
int
ofproto_run(struct ofproto *p)
{
+ struct ofport *ofport;
char *devname;
int error;
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;
+ if (error && error != EAGAIN) {
+ VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, strerror(error));
}
if (p->ofproto_class->port_poll) {
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) {
+ unsigned int change_seq = netdev_change_seq(ofport->netdev);
+ if (ofport->change_seq != change_seq) {
+ ofport->change_seq = change_seq;
+ update_port(p, netdev_get_name(ofport->netdev));
+ }
}
- connmgr_run(p->connmgr, handle_openflow);
+ switch (p->state) {
+ case S_OPENFLOW:
+ connmgr_run(p->connmgr, handle_openflow);
+ break;
- return 0;
+ case S_EVICT:
+ connmgr_run(p->connmgr, NULL);
+ ofproto_evict(p);
+ if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) {
+ p->state = S_OPENFLOW;
+ }
+ break;
+
+ case S_FLUSH:
+ connmgr_run(p->connmgr, NULL);
+ ofproto_flush__(p);
+ if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) {
+ connmgr_flushed(p->connmgr);
+ p->state = S_OPENFLOW;
+ }
+ break;
+
+ default:
+ NOT_REACHED();
+ }
+
+ return error;
+}
+
+/* Performs periodic activity required by 'ofproto' that needs to be done
+ * with the least possible latency.
+ *
+ * It makes sense to call this function a couple of times per poll loop, to
+ * provide a significant performance boost on some benchmarks with the
+ * ofproto-dpif implementation. */
+int
+ofproto_run_fast(struct ofproto *p)
+{
+ int error;
+
+ error = p->ofproto_class->run_fast ? p->ofproto_class->run_fast(p) : 0;
+ if (error && error != EAGAIN) {
+ VLOG_ERR_RL(&rl, "%s: fastpath run failed (%s)",
+ p->name, strerror(error));
+ }
+ return error;
}
void
ofproto_wait(struct ofproto *p)
{
+ struct ofport *ofport;
+
p->ofproto_class->wait(p);
if (p->ofproto_class->port_poll_wait) {
p->ofproto_class->port_poll_wait(p);
}
- netdev_monitor_poll_wait(p->netdev_monitor);
- connmgr_wait(p->connmgr);
+
+ HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
+ if (ofport->change_seq != netdev_change_seq(ofport->netdev)) {
+ poll_immediate_wake();
+ }
+ }
+
+ switch (p->state) {
+ case S_OPENFLOW:
+ connmgr_wait(p->connmgr, true);
+ break;
+
+ case S_EVICT:
+ case S_FLUSH:
+ connmgr_wait(p->connmgr, false);
+ if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) {
+ poll_immediate_wake();
+ }
+ break;
+ }
}
bool
void
ofproto_free_ofproto_controller_info(struct shash *info)
{
- struct shash_node *node;
-
- SHASH_FOR_EACH (node, info) {
- struct ofproto_controller_info *cinfo = node->data;
- while (cinfo->pairs.n) {
- free((char *) cinfo->pairs.values[--cinfo->pairs.n]);
- }
- free(cinfo);
- }
- shash_destroy(info);
+ connmgr_free_controller_info(info);
}
/* Makes a deep copy of 'old' into 'port'. */
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,
+ofproto_add_flow(struct ofproto *ofproto, const struct cls_rule *cls_rule,
const union ofp_action *actions, size_t n_actions)
{
- struct rule *rule;
- rule_create(p, cls_rule, actions, n_actions, 0, 0, 0, false, &rule);
-}
+ const struct rule *rule;
-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->tables[0].cls, cls_rule));
+ if (!rule || !ofputil_actions_equal(rule->actions, rule->n_actions,
+ actions, n_actions)) {
+ struct ofputil_flow_mod fm;
- rule = rule_from_cls_rule(classifier_find_rule_exactly(&ofproto->cls,
- target));
- if (rule) {
- ofproto_rule_remove(rule);
+ memset(&fm, 0, sizeof fm);
+ fm.cr = *cls_rule;
+ fm.buffer_id = UINT32_MAX;
+ fm.actions = (union ofp_action *) actions;
+ fm.n_actions = n_actions;
+ add_flow(ofproto, NULL, &fm, NULL);
}
}
-static void
-ofproto_flush_flows__(struct ofproto *ofproto)
+/* Executes the flow modification specified in 'fm'. Returns 0 on success, an
+ * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the
+ * operation cannot be initiated now but may be retried later.
+ *
+ * This is a helper function for in-band control and fail-open. */
+int
+ofproto_flow_mod(struct ofproto *ofproto, const struct ofputil_flow_mod *fm)
{
- struct rule *rule, *next_rule;
- struct cls_cursor cursor;
+ return handle_flow_mod__(ofproto, NULL, fm, NULL);
+}
- COVERAGE_INC(ofproto_flush);
+/* 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. */
+bool
+ofproto_delete_flow(struct ofproto *ofproto, const struct cls_rule *target)
+{
+ struct rule *rule;
- if (ofproto->ofproto_class->flush) {
- ofproto->ofproto_class->flush(ofproto);
+ rule = rule_from_cls_rule(classifier_find_rule_exactly(
+ &ofproto->tables[0].cls, target));
+ if (!rule) {
+ /* No such rule -> success. */
+ return true;
+ } else if (rule->pending) {
+ /* An operation on the rule is already pending -> failure.
+ * Caller must retry later if it's important. */
+ return false;
+ } else {
+ /* Initiate deletion -> success. */
+ struct ofopgroup *group = ofopgroup_create_unattached(ofproto);
+ ofoperation_create(group, rule, OFOPERATION_DELETE);
+ oftable_remove_rule(rule);
+ ofproto->ofproto_class->rule_destruct(rule);
+ ofopgroup_submit(group);
+ return true;
}
- cls_cursor_init(&cursor, &ofproto->cls, NULL);
- CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
- ofproto_rule_remove(rule);
- }
}
+/* Starts the process of deleting all of the flows from all of ofproto's flow
+ * tables and then reintroducing the flows required by in-band control and
+ * fail-open. The process will complete in a later call to ofproto_run(). */
void
ofproto_flush_flows(struct ofproto *ofproto)
{
- ofproto_flush_flows__(ofproto);
- connmgr_flushed(ofproto->connmgr);
+ COVERAGE_INC(ofproto_flush);
+ ofproto->state = S_FLUSH;
}
\f
static void
ofport_open(const struct ofproto_port *ofproto_port, struct ofp_phy_port *opp)
{
uint32_t curr, advertised, supported, peer;
- struct netdev_options netdev_options;
enum netdev_flags flags;
struct netdev *netdev;
int error;
- memset(&netdev_options, 0, sizeof netdev_options);
- 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);
+ error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev);
if (error) {
VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s "
"cannot be opened (%s)",
{
const char *netdev_name = netdev_get_name(netdev);
struct ofport *ofport;
+ int dev_mtu;
int error;
/* Create ofport. */
}
ofport->ofproto = p;
ofport->netdev = netdev;
+ ofport->change_seq = netdev_change_seq(netdev);
ofport->opp = *opp;
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->ofp_port, 0));
shash_add(&p->port_by_name, netdev_name, ofport);
+ if (!netdev_get_mtu(netdev, &dev_mtu)) {
+ set_internal_devs_mtu(p);
+ ofport->mtu = dev_mtu;
+ } else {
+ ofport->mtu = 0;
+ }
+
/* Let the ofproto_class initialize its private data. */
error = p->ofproto_class->port_construct(ofport);
if (error) {
}
}
-/* Updates 'port' within 'ofproto' with the new 'netdev' and 'opp'.
+/* Updates 'port' with new 'opp' description.
*
* Does not handle a name or port number change. The caller must implement
* such a change as a delete followed by an add. */
connmgr_send_port_status(port->ofproto->connmgr, &port->opp, OFPPR_MODIFY);
}
+/* Update OpenFlow 'state' in 'port' and notify controller. */
+void
+ofproto_port_set_state(struct ofport *port, ovs_be32 state)
+{
+ if (port->opp.state != state) {
+ port->opp.state = state;
+ connmgr_send_port_status(port->ofproto->connmgr, &port->opp,
+ OFPPR_MODIFY);
+ }
+}
+
void
ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port)
{
struct ofport *port = ofproto_get_port(ofproto, ofp_port);
if (port) {
+ if (port->ofproto->ofproto_class->set_realdev) {
+ port->ofproto->ofproto_class->set_realdev(port, 0, 0);
+ }
+ if (port->ofproto->ofproto_class->set_stp_port) {
+ port->ofproto->ofproto_class->set_stp_port(port, NULL);
+ }
if (port->ofproto->ofproto_class->set_cfm) {
- port->ofproto->ofproto_class->set_cfm(port, NULL, NULL, 0);
+ port->ofproto->ofproto_class->set_cfm(port, NULL);
}
if (port->ofproto->ofproto_class->bundle_remove) {
port->ofproto->ofproto_class->bundle_remove(port);
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));
return NULL;
}
+int
+ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats)
+{
+ struct ofproto *ofproto = port->ofproto;
+ int error;
+
+ if (ofproto->ofproto_class->port_get_stats) {
+ error = ofproto->ofproto_class->port_get_stats(port, stats);
+ } else {
+ error = EOPNOTSUPP;
+ }
+
+ return error;
+}
+
static void
update_port(struct ofproto *ofproto, const char *name)
{
if (netdev) {
port = ofproto_get_port(ofproto, ofproto_port.ofp_port);
if (port && !strcmp(netdev_get_name(port->netdev), name)) {
+ struct netdev *old_netdev = port->netdev;
+ int dev_mtu;
+
/* 'name' hasn't changed location. Any properties changed? */
if (!ofport_equal(&port->opp, &opp)) {
ofport_modified(port, &opp);
}
- /* Install the newly opened netdev in case it has changed. */
- netdev_monitor_remove(ofproto->netdev_monitor, port->netdev);
- netdev_monitor_add(ofproto->netdev_monitor, netdev);
+ /* If this is a non-internal port and the MTU changed, check
+ * if the datapath's MTU needs to be updated. */
+ if (strcmp(netdev_get_type(netdev), "internal")
+ && !netdev_get_mtu(netdev, &dev_mtu)
+ && port->mtu != dev_mtu) {
+ set_internal_devs_mtu(ofproto);
+ port->mtu = dev_mtu;
+ }
- netdev_close(port->netdev);
+ /* 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.*/
port->netdev = netdev;
+ port->change_seq = netdev_change_seq(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'
return 0;
}
-\f
-/* 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. */
+
+/* Find the minimum MTU of all non-datapath devices attached to 'p'.
+ * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
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,
- struct rule **rulep)
+find_min_mtu(struct ofproto *p)
{
- struct rule *rule;
- int error;
+ struct ofport *ofport;
+ int mtu = 0;
- rule = ofproto->ofproto_class->rule_alloc();
- if (!rule) {
- error = ENOMEM;
- goto error;
- }
+ HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
+ struct netdev *netdev = ofport->netdev;
+ int dev_mtu;
- 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->send_flow_removed = send_flow_removed;
- if (n_actions > 0) {
- rule->actions = xmemdup(actions, n_actions * sizeof *actions);
- } else {
- rule->actions = NULL;
- }
- rule->n_actions = n_actions;
+ /* Skip any internal ports, since that's what we're trying to
+ * set. */
+ if (!strcmp(netdev_get_type(netdev), "internal")) {
+ continue;
+ }
- error = ofproto->ofproto_class->rule_construct(rule);
- if (error) {
- ofproto_rule_destroy__(rule);
- goto error;
+ if (netdev_get_mtu(netdev, &dev_mtu)) {
+ continue;
+ }
+ if (!mtu || dev_mtu < mtu) {
+ mtu = dev_mtu;
+ }
}
- *rulep = rule;
- return 0;
-
-error:
- VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)",
- ofproto->name, strerror(error));
- *rulep = NULL;
- return error;
+ return mtu ? mtu: ETH_PAYLOAD_MAX;
}
+/* Set the MTU of all datapath devices on 'p' to the minimum of the
+ * non-datapath ports. */
+static void
+set_internal_devs_mtu(struct ofproto *p)
+{
+ struct ofport *ofport;
+ int mtu = find_min_mtu(p);
+
+ HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
+ struct netdev *netdev = ofport->netdev;
+
+ if (!strcmp(netdev_get_type(netdev), "internal")) {
+ netdev_set_mtu(netdev, mtu);
+ }
+ }
+}
+\f
static void
ofproto_rule_destroy__(struct rule *rule)
{
- free(rule->actions);
- rule->ofproto->ofproto_class->rule_dealloc(rule);
+ if (rule) {
+ free(rule->actions);
+ 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).
+/* This function allows an ofproto implementation to destroy any rules that
+ * remain when its ->destruct() function is called. The caller must have
+ * already uninitialized any derived members of 'rule' (step 5 described in the
+ * large comment in ofproto/ofproto-provider.h titled "Life Cycle").
+ * This function implements steps 6 and 7.
*
- * The caller must have already removed 'rule' from the classifier. */
+ * This function should only be called from an ofproto implementation's
+ * ->destruct() function. It is not suitable elsewhere. */
void
ofproto_rule_destroy(struct rule *rule)
{
- rule->ofproto->ofproto_class->rule_destruct(rule);
+ assert(!rule->pending);
+ oftable_remove_rule(rule);
ofproto_rule_destroy__(rule);
}
* that outputs to 'out_port' (output to OFPP_FLOOD and OFPP_ALL doesn't
* count). */
static bool
-rule_has_out_port(const struct rule *rule, ovs_be16 out_port)
+rule_has_out_port(const struct rule *rule, uint16_t out_port)
{
const union ofp_action *oa;
- struct actions_iterator i;
+ size_t left;
- if (out_port == htons(OFPP_NONE)) {
+ if (out_port == OFPP_NONE) {
return true;
}
- for (oa = actions_first(&i, rule->actions, rule->n_actions); oa;
- oa = actions_next(&i)) {
- if (action_outputs_to_port(oa, out_port)) {
+ OFPUTIL_ACTION_FOR_EACH_UNSAFE (oa, left, rule->actions, rule->n_actions) {
+ if (action_outputs_to_port(oa, htons(out_port))) {
return true;
}
}
return false;
}
-struct rule *
-ofproto_rule_lookup(struct ofproto *ofproto, const struct flow *flow)
-{
- return rule_from_cls_rule(classifier_lookup(&ofproto->cls, flow));
-}
-
/* 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.
+ * statistics 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.
assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in));
- flow_extract(packet, 0, in_port, &flow);
+ flow_extract(packet, 0, 0, in_port, &flow);
return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet);
}
-/* 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().
- */
-void
-ofproto_rule_remove(struct rule *rule)
-{
- rule->ofproto->ofproto_class->rule_remove(rule);
- ofproto_rule_destroy(rule);
-}
-
/* Returns true if 'rule' should be hidden from the controller.
*
* Rules with priority higher than UINT16_MAX are set up by ofproto itself
{
return rule->cr.priority > UINT16_MAX;
}
-\f
-static void
-send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh,
- int error)
+
+static enum oftable_flags
+rule_get_flags(const struct rule *rule)
{
- struct ofpbuf *buf = ofputil_encode_error_msg(error, oh);
- if (buf) {
- COVERAGE_INC(ofproto_error);
- ofconn_send_reply(ofconn, buf);
- }
+ return rule->ofproto->tables[rule->table_id].flags;
}
-static int
+static bool
+rule_is_modifiable(const struct rule *rule)
+{
+ return !(rule_get_flags(rule) & OFTABLE_READONLY);
+}
+\f
+static enum ofperr
handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
{
ofconn_send_reply(ofconn, make_echo_reply(oh));
return 0;
}
-static int
+static enum ofperr
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;
+ bool arp_match_ip;
+ uint32_t actions;
+
+ ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, &actions);
+ assert(actions & (1 << OFPAT_OUTPUT)); /* sanity check */
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->n_tables = ofproto->n_tables;
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));
+ OFPC_PORT_STATS | OFPC_QUEUE_STATS);
+ if (arp_match_ip) {
+ osf->capabilities |= htonl(OFPC_ARP_MATCH_IP);
+ }
+ osf->actions = htonl(actions);
HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
ofpbuf_put(buf, &port->opp, sizeof port->opp);
return 0;
}
-static int
+static enum ofperr
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. */
- drop_frags = ofproto->ofproto_class->get_drop_frags(ofproto);
- flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL;
+ enum ofp_config_flags flags;
+ struct ofpbuf *buf;
/* Send reply. */
osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf);
+ flags = ofproto->frag_handling;
+ if (ofconn_get_invalid_ttl_to_controller(ofconn)) {
+ flags |= OFPC_INVALID_TTL_TO_CONTROLLER;
+ }
osc->flags = htons(flags);
osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn));
ofconn_send_reply(ofconn, buf);
return 0;
}
-static int
+static enum ofperr
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:
- ofproto->ofproto_class->set_drop_frags(ofproto, false);
- break;
- case OFPC_FRAG_DROP:
- ofproto->ofproto_class->set_drop_frags(ofproto, true);
- break;
- default:
- VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")",
- osc->flags);
- break;
+ if (ofconn_get_type(ofconn) != OFCONN_PRIMARY
+ || ofconn_get_role(ofconn) != NX_ROLE_SLAVE) {
+ enum ofp_config_flags cur = ofproto->frag_handling;
+ enum ofp_config_flags next = flags & OFPC_FRAG_MASK;
+
+ assert((cur & OFPC_FRAG_MASK) == cur);
+ if (cur != next) {
+ if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) {
+ ofproto->frag_handling = next;
+ } else {
+ VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s",
+ ofproto->name,
+ ofputil_frag_handling_to_string(next));
+ }
}
}
+ ofconn_set_invalid_ttl_to_controller(ofconn,
+ (flags & OFPC_INVALID_TTL_TO_CONTROLLER));
ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len));
}
/* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
- * error message code (composed with ofp_mkerr()) for the caller to propagate
- * upward. Otherwise, returns 0.
+ * error message code for the caller to propagate upward. Otherwise, returns
+ * 0.
*
* The log message mentions 'msg_type'. */
-static int
-reject_slave_controller(struct ofconn *ofconn, const const char *msg_type)
+static enum ofperr
+reject_slave_controller(struct ofconn *ofconn)
{
if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
&& ofconn_get_role(ofconn) == NX_ROLE_SLAVE) {
- static struct vlog_rate_limit perm_rl = VLOG_RATE_LIMIT_INIT(1, 5);
- VLOG_WARN_RL(&perm_rl, "rejecting %s message from slave controller",
- msg_type);
-
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM);
+ return OFPERR_OFPBRC_EPERM;
} else {
return 0;
}
}
-static int
-handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh)
+static enum ofperr
+handle_packet_out(struct ofconn *ofconn, const struct ofp_packet_out *opo)
{
struct ofproto *p = ofconn_get_ofproto(ofconn);
- struct ofp_packet_out *opo;
- struct ofpbuf payload, *buffer;
- union ofp_action *ofp_actions;
- struct ofpbuf request;
+ struct ofputil_packet_out po;
+ struct ofpbuf *payload;
struct flow flow;
- size_t n_ofp_actions;
- uint16_t in_port;
- int error;
+ enum ofperr error;
COVERAGE_INC(ofproto_packet_out);
- error = reject_slave_controller(ofconn, "OFPT_PACKET_OUT");
+ error = reject_slave_controller(ofconn);
if (error) {
return error;
}
- /* Get ofp_packet_out. */
- ofpbuf_use_const(&request, oh, ntohs(oh->length));
- opo = ofpbuf_pull(&request, offsetof(struct ofp_packet_out, actions));
-
- /* Get actions. */
- error = ofputil_pull_actions(&request, ntohs(opo->actions_len),
- &ofp_actions, &n_ofp_actions);
+ /* Decode message. */
+ error = ofputil_decode_packet_out(&po, opo);
if (error) {
return error;
}
/* Get payload. */
- if (opo->buffer_id != htonl(UINT32_MAX)) {
- error = ofconn_pktbuf_retrieve(ofconn, ntohl(opo->buffer_id),
- &buffer, &in_port);
- if (error || !buffer) {
+ if (po.buffer_id != UINT32_MAX) {
+ error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL);
+ if (error || !payload) {
return error;
}
- payload = *buffer;
} else {
- payload = request;
- buffer = NULL;
+ payload = xmalloc(sizeof *payload);
+ ofpbuf_use_const(payload, po.packet, po.packet_len);
}
/* 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);
+ flow_extract(payload, 0, 0, po.in_port, &flow);
+ error = p->ofproto_class->packet_out(p, payload, &flow,
+ po.actions, po.n_actions);
+ ofpbuf_delete(payload);
return error;
}
}
}
-static int
+static enum ofperr
handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh)
{
struct ofproto *p = ofconn_get_ofproto(ofconn);
struct ofport *port;
int error;
- error = reject_slave_controller(ofconn, "OFPT_PORT_MOD");
+ error = reject_slave_controller(ofconn);
if (error) {
return error;
}
port = ofproto_get_port(p, ntohs(opm->port_no));
if (!port) {
- return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT);
+ return OFPERR_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);
+ return OFPERR_OFPPMFC_BAD_HW_ADDR;
} else {
update_port_config(port, opm->config, opm->mask);
if (opm->advertise) {
return 0;
}
-static struct ofpbuf *
-make_ofp_stats_reply(ovs_be32 xid, ovs_be16 type, size_t body_len)
-{
- struct ofp_stats_reply *osr;
- struct ofpbuf *msg;
-
- msg = ofpbuf_new(MIN(sizeof *osr + body_len, UINT16_MAX));
- osr = put_openflow_xid(sizeof *osr, OFPT_STATS_REPLY, xid, msg);
- osr->type = type;
- osr->flags = htons(0);
- return msg;
-}
-
-static struct ofpbuf *
-start_ofp_stats_reply(const struct ofp_header *request, size_t body_len)
-{
- const struct ofp_stats_request *osr
- = (const struct ofp_stats_request *) request;
- return make_ofp_stats_reply(osr->header.xid, osr->type, body_len);
-}
-
-static void *
-append_ofp_stats_reply(size_t nbytes, struct ofconn *ofconn,
- struct ofpbuf **msgp)
-{
- struct ofpbuf *msg = *msgp;
- assert(nbytes <= UINT16_MAX - sizeof(struct ofp_stats_reply));
- if (nbytes + msg->size > UINT16_MAX) {
- struct ofp_stats_reply *reply = msg->data;
- reply->flags = htons(OFPSF_REPLY_MORE);
- *msgp = make_ofp_stats_reply(reply->header.xid, reply->type, nbytes);
- ofconn_send_reply(ofconn, msg);
- }
- return ofpbuf_put_uninit(*msgp, nbytes);
-}
-
-static struct ofpbuf *
-make_nxstats_reply(ovs_be32 xid, ovs_be32 subtype, size_t body_len)
-{
- struct nicira_stats_msg *nsm;
- struct ofpbuf *msg;
-
- msg = ofpbuf_new(MIN(sizeof *nsm + body_len, UINT16_MAX));
- nsm = put_openflow_xid(sizeof *nsm, OFPT_STATS_REPLY, xid, msg);
- nsm->type = htons(OFPST_VENDOR);
- nsm->flags = htons(0);
- nsm->vendor = htonl(NX_VENDOR_ID);
- nsm->subtype = subtype;
- return msg;
-}
-
-static struct ofpbuf *
-start_nxstats_reply(const struct nicira_stats_msg *request, size_t body_len)
-{
- return make_nxstats_reply(request->header.xid, request->subtype, body_len);
-}
-
-static void
-append_nxstats_reply(size_t nbytes, struct ofconn *ofconn,
- struct ofpbuf **msgp)
-{
- struct ofpbuf *msg = *msgp;
- assert(nbytes <= UINT16_MAX - sizeof(struct nicira_stats_msg));
- if (nbytes + msg->size > UINT16_MAX) {
- struct nicira_stats_msg *reply = msg->data;
- reply->flags = htons(OFPSF_REPLY_MORE);
- *msgp = make_nxstats_reply(reply->header.xid, reply->subtype, nbytes);
- ofconn_send_reply(ofconn, msg);
- }
- ofpbuf_prealloc_tailroom(*msgp, nbytes);
-}
-
-static int
+static enum ofperr
handle_desc_stats_request(struct ofconn *ofconn,
- const struct ofp_header *request)
+ const struct ofp_stats_msg *request)
{
struct ofproto *p = ofconn_get_ofproto(ofconn);
struct ofp_desc_stats *ods;
struct ofpbuf *msg;
- msg = start_ofp_stats_reply(request, sizeof *ods);
- ods = append_ofp_stats_reply(sizeof *ods, ofconn, &msg);
- memset(ods, 0, sizeof *ods);
+ ods = ofputil_make_stats_reply(sizeof *ods, request, &msg);
ovs_strlcpy(ods->mfr_desc, p->mfr_desc, sizeof ods->mfr_desc);
ovs_strlcpy(ods->hw_desc, p->hw_desc, sizeof ods->hw_desc);
ovs_strlcpy(ods->sw_desc, p->sw_desc, sizeof ods->sw_desc);
return 0;
}
-static int
+static enum ofperr
handle_table_stats_request(struct ofconn *ofconn,
- const struct ofp_header *request)
+ const struct ofp_stats_msg *request)
{
struct ofproto *p = ofconn_get_ofproto(ofconn);
struct ofp_table_stats *ots;
struct ofpbuf *msg;
+ size_t i;
+
+ ofputil_make_stats_reply(sizeof(struct ofp_stats_msg), request, &msg);
+
+ 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%zu", 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].cls));
+ }
+
+ p->ofproto_class->get_tables(p, ots);
- msg = start_ofp_stats_reply(request, sizeof *ots * 2);
+ for (i = 0; i < p->n_tables; i++) {
+ const struct oftable *table = &p->tables[i];
- /* Classifier table. */
- ots = append_ofp_stats_reply(sizeof *ots, ofconn, &msg);
- memset(ots, 0, sizeof *ots);
- strcpy(ots->name, "classifier");
- ots->wildcards = (ofconn_get_flow_format(ofconn) == NXFF_OPENFLOW10
- ? htonl(OFPFW_ALL) : htonl(OVSFW_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 */
+ if (table->name) {
+ ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name);
+ }
+
+ if (table->max_flows < ntohl(ots[i].max_entries)) {
+ ots[i].max_entries = htonl(table->max_flows);
+ }
+ }
ofconn_send_reply(ofconn, msg);
return 0;
}
static void
-append_port_stat(struct ofport *port, struct ofconn *ofconn,
- struct ofpbuf **msgp)
+append_port_stat(struct ofport *port, struct list *replies)
{
struct netdev_stats stats;
struct ofp_port_stats *ops;
/* Intentionally ignore return value, since errors will set
* 'stats' to all-1s, which is correct for OpenFlow, and
* netdev_get_stats() will log errors. */
- netdev_get_stats(port->netdev, &stats);
+ ofproto_port_get_stats(port, &stats);
- ops = append_ofp_stats_reply(sizeof *ops, ofconn, msgp);
+ ops = ofputil_append_stats_reply(sizeof *ops, replies);
ops->port_no = port->opp.port_no;
memset(ops->pad, 0, sizeof ops->pad);
put_32aligned_be64(&ops->rx_packets, htonll(stats.rx_packets));
put_32aligned_be64(&ops->collisions, htonll(stats.collisions));
}
-static int
-handle_port_stats_request(struct ofconn *ofconn, const struct ofp_header *oh)
+static enum ofperr
+handle_port_stats_request(struct ofconn *ofconn,
+ const struct ofp_port_stats_request *psr)
{
struct ofproto *p = ofconn_get_ofproto(ofconn);
- const struct ofp_port_stats_request *psr = ofputil_stats_body(oh);
- struct ofp_port_stats *ops;
- struct ofpbuf *msg;
struct ofport *port;
+ struct list replies;
- msg = start_ofp_stats_reply(oh, sizeof *ops * 16);
+ ofputil_start_stats_reply(&psr->osm, &replies);
if (psr->port_no != htons(OFPP_NONE)) {
port = ofproto_get_port(p, ntohs(psr->port_no));
if (port) {
- append_port_stat(port, ofconn, &msg);
+ append_port_stat(port, &replies);
}
} else {
HMAP_FOR_EACH (port, hmap_node, &p->ports) {
- append_port_stat(port, ofconn, &msg);
+ append_port_stat(port, &replies);
}
}
- ofconn_send_reply(ofconn, msg);
+ ofconn_send_replies(ofconn, &replies);
return 0;
}
static void
-calc_flow_duration__(long long int start, uint32_t *sec, uint32_t *nsec)
+calc_flow_duration__(long long int start, long long int now,
+ uint32_t *sec, uint32_t *nsec)
{
- long long int msecs = time_msec() - start;
+ long long int msecs = now - start;
*sec = msecs / 1000;
*nsec = (msecs % 1000) * (1000 * 1000);
}
-static void
-calc_flow_duration(long long int start, ovs_be32 *sec_be, ovs_be32 *nsec_be)
+/* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns
+ * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */
+static enum ofperr
+check_table_id(const struct ofproto *ofproto, uint8_t table_id)
{
- uint32_t sec, nsec;
+ return (table_id == 0xff || table_id < ofproto->n_tables
+ ? 0
+ : OFPERR_NXBRC_BAD_TABLE_ID);
- calc_flow_duration__(start, &sec, &nsec);
- *sec_be = htonl(sec);
- *nsec_be = htonl(nsec);
}
-static void
-put_ofp_flow_stats(struct ofconn *ofconn, struct rule *rule,
- ovs_be16 out_port, struct ofpbuf **replyp)
+static struct oftable *
+next_visible_table(struct ofproto *ofproto, uint8_t table_id)
{
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- struct ofp_flow_stats *ofs;
- uint64_t packet_count, byte_count;
- ovs_be64 cookie;
- size_t act_len, len;
+ struct oftable *table;
- if (rule_is_hidden(rule) || !rule_has_out_port(rule, out_port)) {
- return;
+ for (table = &ofproto->tables[table_id];
+ table < &ofproto->tables[ofproto->n_tables];
+ table++) {
+ if (!(table->flags & OFTABLE_HIDDEN)) {
+ return table;
+ }
}
- act_len = sizeof *rule->actions * rule->n_actions;
- len = offsetof(struct ofp_flow_stats, actions) + act_len;
-
- 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->pad = 0;
- ofputil_cls_rule_to_match(&rule->cr, ofconn_get_flow_format(ofconn),
- &ofs->match, rule->flow_cookie, &cookie);
- put_32aligned_be64(&ofs->cookie, cookie);
- calc_flow_duration(rule->created, &ofs->duration_sec, &ofs->duration_nsec);
- ofs->priority = htons(rule->cr.priority);
- ofs->idle_timeout = htons(rule->idle_timeout);
- ofs->hard_timeout = htons(rule->hard_timeout);
- memset(ofs->pad2, 0, sizeof ofs->pad2);
- put_32aligned_be64(&ofs->packet_count, htonll(packet_count));
- put_32aligned_be64(&ofs->byte_count, htonll(byte_count));
- if (rule->n_actions > 0) {
- memcpy(ofs->actions, rule->actions, act_len);
- }
+ return NULL;
}
-static bool
-is_valid_table(uint8_t table_id)
+static struct oftable *
+first_matching_table(struct ofproto *ofproto, uint8_t table_id)
{
- if (table_id == 0 || table_id == 0xff) {
- return true;
+ if (table_id == 0xff) {
+ return next_visible_table(ofproto, 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 int
-handle_flow_stats_request(struct ofconn *ofconn, const struct ofp_header *oh)
+static struct oftable *
+next_matching_table(struct ofproto *ofproto,
+ struct oftable *table, uint8_t table_id)
{
- const struct ofp_flow_stats_request *fsr = ofputil_stats_body(oh);
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- struct ofpbuf *reply;
+ return (table_id == 0xff
+ ? next_visible_table(ofproto, (table - ofproto->tables) + 1)
+ : NULL);
+}
+
+/* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO:
+ *
+ * - If TABLE_ID is 0xff, this iterates over every classifier table in
+ * OFPROTO, skipping tables marked OFTABLE_HIDDEN.
+ *
+ * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
+ * only once, for that table. (This can be used to access tables marked
+ * OFTABLE_HIDDEN.)
+ *
+ * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be
+ * entered at all. (Perhaps you should have validated TABLE_ID with
+ * check_table_id().)
+ *
+ * All parameters are evaluated multiple times.
+ */
+#define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \
+ for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \
+ (TABLE) != NULL; \
+ (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
+
+/* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if
+ * 'table_id' is 0xff) that match 'match' in the "loose" way required for
+ * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list
+ * 'rules'.
+ *
+ * If 'out_port' is anything other than OFPP_NONE, then only rules that output
+ * to 'out_port' are included.
+ *
+ * Hidden rules are always omitted.
+ *
+ * Returns 0 on success, otherwise an OpenFlow error code. */
+static enum ofperr
+collect_rules_loose(struct ofproto *ofproto, uint8_t table_id,
+ const struct cls_rule *match,
+ ovs_be64 cookie, ovs_be64 cookie_mask,
+ uint16_t out_port, struct list *rules)
+{
+ struct oftable *table;
+ enum ofperr error;
+
+ error = check_table_id(ofproto, table_id);
+ if (error) {
+ return error;
+ }
- COVERAGE_INC(ofproto_flows_req);
- reply = start_ofp_stats_reply(oh, 1024);
- if (is_valid_table(fsr->table_id)) {
+ list_init(rules);
+ FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) {
struct cls_cursor cursor;
- struct cls_rule target;
struct rule *rule;
- ofputil_cls_rule_from_match(&fsr->match, 0, NXFF_OPENFLOW10, 0,
- &target);
- cls_cursor_init(&cursor, &ofproto->cls, &target);
+ cls_cursor_init(&cursor, &table->cls, match);
CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
- put_ofp_flow_stats(ofconn, rule, fsr->out_port, &reply);
+ if (rule->pending) {
+ return OFPROTO_POSTPONE;
+ }
+ if (!rule_is_hidden(rule) && rule_has_out_port(rule, out_port)
+ && !((rule->flow_cookie ^ cookie) & cookie_mask)) {
+ list_push_back(rules, &rule->ofproto_node);
+ }
}
}
- ofconn_send_reply(ofconn, reply);
-
return 0;
}
-static void
-put_nx_flow_stats(struct ofconn *ofconn, struct rule *rule,
- ovs_be16 out_port, struct ofpbuf **replyp)
-{
- struct nx_flow_stats *nfs;
- uint64_t packet_count, byte_count;
- size_t act_len, start_len;
- struct ofpbuf *reply;
+/* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if
+ * 'table_id' is 0xff) that match 'match' in the "strict" way required for
+ * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them
+ * on list 'rules'.
+ *
+ * If 'out_port' is anything other than OFPP_NONE, then only rules that output
+ * to 'out_port' are included.
+ *
+ * Hidden rules are always omitted.
+ *
+ * Returns 0 on success, otherwise an OpenFlow error code. */
+static enum ofperr
+collect_rules_strict(struct ofproto *ofproto, uint8_t table_id,
+ const struct cls_rule *match,
+ ovs_be64 cookie, ovs_be64 cookie_mask,
+ uint16_t out_port, struct list *rules)
+{
+ struct oftable *table;
+ int error;
- if (rule_is_hidden(rule) || !rule_has_out_port(rule, out_port)) {
- return;
+ error = check_table_id(ofproto, table_id);
+ if (error) {
+ return error;
}
- rule->ofproto->ofproto_class->rule_get_stats(rule,
- &packet_count, &byte_count);
+ list_init(rules);
+ FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) {
+ struct rule *rule;
- act_len = sizeof *rule->actions * rule->n_actions;
-
- append_nxstats_reply(sizeof *nfs + NXM_MAX_LEN + act_len, ofconn, replyp);
- start_len = (*replyp)->size;
- reply = *replyp;
-
- nfs = ofpbuf_put_uninit(reply, sizeof *nfs);
- nfs->table_id = 0;
- nfs->pad = 0;
- calc_flow_duration(rule->created, &nfs->duration_sec, &nfs->duration_nsec);
- nfs->cookie = rule->flow_cookie;
- nfs->priority = htons(rule->cr.priority);
- nfs->idle_timeout = htons(rule->idle_timeout);
- nfs->hard_timeout = htons(rule->hard_timeout);
- nfs->match_len = htons(nx_put_match(reply, &rule->cr));
- memset(nfs->pad2, 0, sizeof nfs->pad2);
- nfs->packet_count = htonll(packet_count);
- nfs->byte_count = htonll(byte_count);
- if (rule->n_actions > 0) {
- ofpbuf_put(reply, rule->actions, act_len);
+ rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls,
+ match));
+ if (rule) {
+ if (rule->pending) {
+ return OFPROTO_POSTPONE;
+ }
+ if (!rule_is_hidden(rule) && rule_has_out_port(rule, out_port)
+ && !((rule->flow_cookie ^ cookie) & cookie_mask)) {
+ list_push_back(rules, &rule->ofproto_node);
+ }
+ }
}
- nfs->length = htons(reply->size - start_len);
+ return 0;
}
+/* Returns 'age_ms' (a duration in milliseconds), converted to seconds and
+ * forced into the range of a uint16_t. */
static int
-handle_nxst_flow(struct ofconn *ofconn, const struct ofp_header *oh)
+age_secs(long long int age_ms)
{
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- struct nx_flow_stats_request *nfsr;
- struct cls_rule target;
- struct ofpbuf *reply;
- struct ofpbuf b;
- int error;
+ return (age_ms < 0 ? 0
+ : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX
+ : (unsigned int) age_ms / 1000);
+}
- ofpbuf_use_const(&b, oh, ntohs(oh->length));
+static enum ofperr
+handle_flow_stats_request(struct ofconn *ofconn,
+ const struct ofp_stats_msg *osm)
+{
+ struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
+ struct ofputil_flow_stats_request fsr;
+ struct list replies;
+ struct list rules;
+ struct rule *rule;
+ enum ofperr error;
- /* Dissect the message. */
- nfsr = ofpbuf_pull(&b, sizeof *nfsr);
- error = nx_pull_match(&b, ntohs(nfsr->match_len), 0, &target);
+ error = ofputil_decode_flow_stats_request(&fsr, &osm->header);
if (error) {
return error;
}
- if (b.size) {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
- }
-
- COVERAGE_INC(ofproto_flows_req);
- reply = start_nxstats_reply(&nfsr->nsm, 1024);
- if (is_valid_table(nfsr->table_id)) {
- struct cls_cursor cursor;
- struct rule *rule;
- cls_cursor_init(&cursor, &ofproto->cls, &target);
- CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
- put_nx_flow_stats(ofconn, rule, nfsr->out_port, &reply);
- }
+ error = collect_rules_loose(ofproto, fsr.table_id, &fsr.match,
+ fsr.cookie, fsr.cookie_mask,
+ fsr.out_port, &rules);
+ if (error) {
+ return error;
}
- ofconn_send_reply(ofconn, reply);
+
+ ofputil_start_stats_reply(osm, &replies);
+ LIST_FOR_EACH (rule, ofproto_node, &rules) {
+ long long int now = time_msec();
+ struct ofputil_flow_stats fs;
+
+ fs.rule = rule->cr;
+ fs.cookie = rule->flow_cookie;
+ fs.table_id = rule->table_id;
+ calc_flow_duration__(rule->created, now, &fs.duration_sec,
+ &fs.duration_nsec);
+ fs.idle_timeout = rule->idle_timeout;
+ fs.hard_timeout = rule->hard_timeout;
+ fs.idle_age = age_secs(now - rule->used);
+ fs.hard_age = age_secs(now - rule->modified);
+ ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count,
+ &fs.byte_count);
+ fs.actions = rule->actions;
+ fs.n_actions = rule->n_actions;
+ ofputil_append_flow_stats_reply(&fs, &replies);
+ }
+ ofconn_send_replies(ofconn, &replies);
return 0;
}
flow_stats_ds(struct rule *rule, struct ds *results)
{
uint64_t packet_count, byte_count;
- size_t act_len = sizeof *rule->actions * rule->n_actions;
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, "priority=%u, ", rule->cr.priority);
ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
cls_rule_format(&rule->cr, results);
ds_put_char(results, ',');
- if (act_len > 0) {
- ofp_print_actions(results, &rule->actions->header, act_len);
+ if (rule->n_actions > 0) {
+ ofp_print_actions(results, rule->actions, rule->n_actions);
} else {
ds_put_cstr(results, "drop");
}
void
ofproto_get_all_flows(struct ofproto *p, struct ds *results)
{
- struct cls_cursor cursor;
- struct rule *rule;
+ struct oftable *table;
- cls_cursor_init(&cursor, &p->cls, NULL);
- CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
- flow_stats_ds(rule, results);
+ OFPROTO_FOR_EACH_TABLE (table, p) {
+ struct cls_cursor cursor;
+ struct rule *rule;
+
+ cls_cursor_init(&cursor, &table->cls, NULL);
+ CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
+ flow_stats_ds(rule, results);
+ }
}
}
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,
- struct ofp_aggregate_stats_reply *oasr)
+/* Checks the fault status of CFM for 'ofp_port' within 'ofproto'. Returns a
+ * bitmask of 'cfm_fault_reason's to indicate a CFM fault (generally
+ * indicating a connectivity problem). Returns zero if CFM is not faulted,
+ * and -1 if CFM is not enabled on 'port'. */
+int
+ofproto_port_get_cfm_fault(const struct ofproto *ofproto, uint16_t ofp_port)
{
- uint64_t total_packets = 0;
- uint64_t total_bytes = 0;
- int n_flows = 0;
-
- COVERAGE_INC(ofproto_agg_request);
-
- if (is_valid_table(table_id)) {
- struct cls_cursor cursor;
- struct rule *rule;
-
- cls_cursor_init(&cursor, &ofproto->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;
-
- ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
- &byte_count);
-
- total_packets += packet_count;
- total_bytes += byte_count;
- n_flows++;
- }
- }
- }
-
- oasr->flow_count = htonl(n_flows);
- put_32aligned_be64(&oasr->packet_count, htonll(total_packets));
- put_32aligned_be64(&oasr->byte_count, htonll(total_bytes));
- memset(oasr->pad, 0, sizeof oasr->pad);
+ struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
+ return (ofport && ofproto->ofproto_class->get_cfm_fault
+ ? ofproto->ofproto_class->get_cfm_fault(ofport)
+ : -1);
}
-static int
-handle_aggregate_stats_request(struct ofconn *ofconn,
- const struct ofp_header *oh)
+/* Gets the MPIDs of the remote maintenance points broadcasting to 'ofp_port'
+ * within 'ofproto'. Populates 'rmps' with an array of MPIDs owned by
+ * 'ofproto', and 'n_rmps' with the number of MPIDs in 'rmps'. Returns a
+ * number less than 0 if CFM is not enabled on 'ofp_port'. */
+int
+ofproto_port_get_cfm_remote_mpids(const struct ofproto *ofproto,
+ uint16_t ofp_port, const uint64_t **rmps,
+ size_t *n_rmps)
{
- const struct ofp_aggregate_stats_request *request = ofputil_stats_body(oh);
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- struct ofp_aggregate_stats_reply *reply;
- struct cls_rule target;
- struct ofpbuf *msg;
-
- ofputil_cls_rule_from_match(&request->match, 0, NXFF_OPENFLOW10, 0,
- &target);
+ struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
- msg = start_ofp_stats_reply(oh, sizeof *reply);
- reply = append_ofp_stats_reply(sizeof *reply, ofconn, &msg);
- query_aggregate_stats(ofproto, &target, request->out_port,
- request->table_id, reply);
- ofconn_send_reply(ofconn, msg);
- return 0;
+ *rmps = NULL;
+ *n_rmps = 0;
+ return (ofport && ofproto->ofproto_class->get_cfm_remote_mpids
+ ? ofproto->ofproto_class->get_cfm_remote_mpids(ofport, rmps,
+ n_rmps)
+ : -1);
}
-static int
-handle_nxst_aggregate(struct ofconn *ofconn, const struct ofp_header *oh)
+static enum ofperr
+handle_aggregate_stats_request(struct ofconn *ofconn,
+ const struct ofp_stats_msg *osm)
{
struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- struct nx_aggregate_stats_request *request;
- struct ofp_aggregate_stats_reply *reply;
- struct cls_rule target;
- struct ofpbuf b;
- struct ofpbuf *buf;
- int error;
+ struct ofputil_flow_stats_request request;
+ struct ofputil_aggregate_stats stats;
+ bool unknown_packets, unknown_bytes;
+ struct ofpbuf *reply;
+ struct list rules;
+ struct rule *rule;
+ enum ofperr error;
- ofpbuf_use_const(&b, oh, ntohs(oh->length));
+ error = ofputil_decode_flow_stats_request(&request, &osm->header);
+ if (error) {
+ return error;
+ }
- /* Dissect the message. */
- request = ofpbuf_pull(&b, sizeof *request);
- error = nx_pull_match(&b, ntohs(request->match_len), 0, &target);
+ error = collect_rules_loose(ofproto, request.table_id, &request.match,
+ request.cookie, request.cookie_mask,
+ request.out_port, &rules);
if (error) {
return error;
}
- if (b.size) {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
+
+ memset(&stats, 0, sizeof stats);
+ unknown_packets = unknown_bytes = false;
+ LIST_FOR_EACH (rule, ofproto_node, &rules) {
+ uint64_t packet_count;
+ uint64_t byte_count;
+
+ ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
+ &byte_count);
+
+ if (packet_count == UINT64_MAX) {
+ unknown_packets = true;
+ } else {
+ stats.packet_count += packet_count;
+ }
+
+ if (byte_count == UINT64_MAX) {
+ unknown_bytes = true;
+ } else {
+ stats.byte_count += byte_count;
+ }
+
+ stats.flow_count++;
+ }
+ if (unknown_packets) {
+ stats.packet_count = UINT64_MAX;
+ }
+ if (unknown_bytes) {
+ stats.byte_count = UINT64_MAX;
}
- /* Reply. */
- COVERAGE_INC(ofproto_flows_req);
- buf = start_nxstats_reply(&request->nsm, sizeof *reply);
- reply = ofpbuf_put_uninit(buf, sizeof *reply);
- query_aggregate_stats(ofproto, &target, request->out_port,
- request->table_id, reply);
- ofconn_send_reply(ofconn, buf);
+ reply = ofputil_encode_aggregate_stats_reply(&stats, osm);
+ ofconn_send_reply(ofconn, reply);
return 0;
}
struct queue_stats_cbdata {
- struct ofconn *ofconn;
struct ofport *ofport;
- struct ofpbuf *msg;
+ struct list replies;
};
static void
{
struct ofp_queue_stats *reply;
- reply = append_ofp_stats_reply(sizeof *reply, cbdata->ofconn, &cbdata->msg);
+ reply = ofputil_append_stats_reply(sizeof *reply, &cbdata->replies);
reply->port_no = cbdata->ofport->opp.port_no;
memset(reply->pad, 0, sizeof reply->pad);
reply->queue_id = htonl(queue_id);
}
}
-static int
-handle_queue_stats_request(struct ofconn *ofconn, const struct ofp_header *oh)
+static enum ofperr
+handle_queue_stats_request(struct ofconn *ofconn,
+ const struct ofp_queue_stats_request *qsr)
{
struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- const struct ofp_queue_stats_request *qsr;
struct queue_stats_cbdata cbdata;
struct ofport *port;
unsigned int port_no;
uint32_t queue_id;
- qsr = ofputil_stats_body(oh);
- if (!qsr) {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
- }
-
COVERAGE_INC(ofproto_queue_req);
- cbdata.ofconn = ofconn;
- cbdata.msg = start_ofp_stats_reply(oh, 128);
+ ofputil_start_stats_reply(&qsr->osm, &cbdata.replies);
port_no = ntohs(qsr->port_no);
queue_id = ntohl(qsr->queue_id);
handle_queue_stats_for_port(port, queue_id, &cbdata);
}
} else {
- ofpbuf_delete(cbdata.msg);
- return ofp_mkerr(OFPET_QUEUE_OP_FAILED, OFPQOFC_BAD_PORT);
+ ofpbuf_list_delete(&cbdata.replies);
+ return OFPERR_OFPQOFC_BAD_PORT;
}
- ofconn_send_reply(ofconn, cbdata.msg);
+ ofconn_send_replies(ofconn, &cbdata.replies);
return 0;
}
+static bool
+is_flow_deletion_pending(const struct ofproto *ofproto,
+ const struct cls_rule *cls_rule,
+ uint8_t table_id)
+{
+ if (!hmap_is_empty(&ofproto->deletions)) {
+ struct ofoperation *op;
+
+ HMAP_FOR_EACH_WITH_HASH (op, hmap_node,
+ cls_rule_hash(cls_rule, table_id),
+ &ofproto->deletions) {
+ if (cls_rule_equal(cls_rule, &op->rule->cr)) {
+ return true;
+ }
+ }
+ }
+
+ return false;
+}
+
/* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
* in which no matching flow already exists in the flow table.
*
* Adds the flow specified by 'ofm', which is followed by 'n_actions'
- * ofp_actions, to the ofproto's flow table. Returns 0 on success or an
- * OpenFlow error code as encoded by ofp_mkerr() on failure.
+ * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
+ * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
+ * initiated now but may be retried later.
*
* 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
* if any. */
-static int
-add_flow(struct ofconn *ofconn, struct flow_mod *fm)
+static enum ofperr
+add_flow(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofputil_flow_mod *fm, const struct ofp_header *request)
{
- struct ofproto *p = ofconn_get_ofproto(ofconn);
- struct ofpbuf *packet;
+ struct oftable *table;
+ struct ofopgroup *group;
+ struct rule *victim;
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);
- }
-
- 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);
+ error = check_table_id(ofproto, fm->table_id);
if (error) {
- ofpbuf_delete(packet);
return error;
}
- if (packet) {
- assert(!buf_err);
- return rule_execute(rule, in_port, packet);
+ /* Pick table. */
+ if (fm->table_id == 0xff) {
+ uint8_t table_id;
+ if (ofproto->ofproto_class->rule_choose_table) {
+ error = ofproto->ofproto_class->rule_choose_table(ofproto, &fm->cr,
+ &table_id);
+ if (error) {
+ return error;
+ }
+ assert(table_id < ofproto->n_tables);
+ table = &ofproto->tables[table_id];
+ } else {
+ table = &ofproto->tables[0];
+ }
+ } else if (fm->table_id < ofproto->n_tables) {
+ table = &ofproto->tables[fm->table_id];
+ } else {
+ return OFPERR_NXFMFC_BAD_TABLE_ID;
}
- return buf_err;
-}
-static struct rule *
-find_flow_strict(struct ofproto *p, const struct flow_mod *fm)
-{
- return rule_from_cls_rule(classifier_find_rule_exactly(&p->cls, &fm->cr));
-}
+ if (table->flags & OFTABLE_READONLY) {
+ return OFPERR_OFPBRC_EPERM;
+ }
-static int
-send_buffered_packet(struct ofconn *ofconn,
- struct rule *rule, uint32_t buffer_id)
-{
- struct ofpbuf *packet;
- uint16_t in_port;
- int error;
+ /* Check for overlap, if requested. */
+ if (fm->flags & OFPFF_CHECK_OVERLAP
+ && classifier_rule_overlaps(&table->cls, &fm->cr)) {
+ return OFPERR_OFPFMFC_OVERLAP;
+ }
- if (buffer_id == UINT32_MAX) {
- return 0;
+ /* Serialize against pending deletion. */
+ if (is_flow_deletion_pending(ofproto, &fm->cr, table - ofproto->tables)) {
+ return OFPROTO_POSTPONE;
}
- error = ofconn_pktbuf_retrieve(ofconn, buffer_id, &packet, &in_port);
- if (error) {
- return error;
+ /* Allocate new rule. */
+ rule = ofproto->ofproto_class->rule_alloc();
+ if (!rule) {
+ VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)",
+ ofproto->name, strerror(error));
+ return ENOMEM;
}
+ rule->ofproto = ofproto;
+ rule->cr = fm->cr;
+ rule->pending = NULL;
+ rule->flow_cookie = fm->cookie;
+ rule->created = rule->modified = rule->used = time_msec();
+ rule->idle_timeout = fm->idle_timeout;
+ rule->hard_timeout = fm->hard_timeout;
+ rule->table_id = table - ofproto->tables;
+ rule->send_flow_removed = (fm->flags & OFPFF_SEND_FLOW_REM) != 0;
+ rule->actions = ofputil_actions_clone(fm->actions, fm->n_actions);
+ rule->n_actions = fm->n_actions;
+ rule->evictable = true;
+ rule->eviction_group = NULL;
+
+ /* Insert new rule. */
+ victim = oftable_replace_rule(rule);
+ if (victim && !rule_is_modifiable(victim)) {
+ error = OFPERR_OFPBRC_EPERM;
+ } else if (victim && victim->pending) {
+ error = OFPROTO_POSTPONE;
+ } else {
+ struct rule *evict;
+
+ if (classifier_count(&table->cls) > table->max_flows) {
+ bool was_evictable;
+
+ was_evictable = rule->evictable;
+ rule->evictable = false;
+ evict = choose_rule_to_evict(table);
+ rule->evictable = was_evictable;
+
+ if (!evict) {
+ error = OFPERR_OFPFMFC_ALL_TABLES_FULL;
+ goto exit;
+ } else if (evict->pending) {
+ error = OFPROTO_POSTPONE;
+ goto exit;
+ }
+ } else {
+ evict = NULL;
+ }
+
+ group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id);
+ ofoperation_create(group, rule, OFOPERATION_ADD);
+ rule->pending->victim = victim;
- return rule_execute(rule, in_port, packet);
+ error = ofproto->ofproto_class->rule_construct(rule);
+ if (error) {
+ ofoperation_destroy(rule->pending);
+ } else if (evict) {
+ delete_flow__(evict, group);
+ }
+ ofopgroup_submit(group);
+ }
+
+exit:
+ /* Back out if an error occurred. */
+ if (error) {
+ oftable_substitute_rule(rule, victim);
+ ofproto_rule_destroy__(rule);
+ }
+ return error;
}
\f
/* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
-struct modify_flows_cbdata {
- struct ofproto *ofproto;
- const struct flow_mod *fm;
- struct rule *match;
-};
-
-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.
+/* Modifies the rules listed in 'rules', changing their actions to match those
+ * in 'fm'.
*
- * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
- * if any. */
-static int
-modify_flows_loose(struct ofconn *ofconn, struct flow_mod *fm)
+ * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
+ * if any.
+ *
+ * Returns 0 on success, otherwise an OpenFlow error code. */
+static enum ofperr
+modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofputil_flow_mod *fm,
+ const struct ofp_header *request, struct list *rules)
{
- struct ofproto *p = ofconn_get_ofproto(ofconn);
- struct rule *match = NULL;
- struct cls_cursor cursor;
+ struct ofopgroup *group;
struct rule *rule;
- int error;
+ enum ofperr error;
+
+ group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id);
+ error = OFPERR_OFPBRC_EPERM;
+ LIST_FOR_EACH (rule, ofproto_node, rules) {
+ if (rule_is_modifiable(rule)) {
+ /* At least one rule is modifiable, don't report EPERM error. */
+ error = 0;
+ } else {
+ continue;
+ }
- error = 0;
- cls_cursor_init(&cursor, &p->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 (!ofputil_actions_equal(fm->actions, fm->n_actions,
+ rule->actions, rule->n_actions)) {
+ ofoperation_create(group, rule, OFOPERATION_MODIFY);
+ rule->pending->actions = rule->actions;
+ rule->pending->n_actions = rule->n_actions;
+ rule->actions = ofputil_actions_clone(fm->actions, fm->n_actions);
+ rule->n_actions = fm->n_actions;
+ ofproto->ofproto_class->rule_modify_actions(rule);
+ } else {
+ rule->modified = time_msec();
}
+ rule->flow_cookie = fm->cookie;
}
+ ofopgroup_submit(group);
- 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. */
- send_buffered_packet(ofconn, match, fm->buffer_id);
- return 0;
- } else {
- return add_flow(ofconn, fm);
- }
+ return error;
}
-/* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
- * code as encoded by ofp_mkerr() on failure.
+/* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
+ * failure.
*
- * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
+ * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
* if any. */
-static int
-modify_flow_strict(struct ofconn *ofconn, struct flow_mod *fm)
+static enum ofperr
+modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofputil_flow_mod *fm,
+ const struct ofp_header *request)
{
- struct ofproto *p = ofconn_get_ofproto(ofconn);
- struct rule *rule = find_flow_strict(p, fm);
- if (rule && !rule_is_hidden(rule)) {
- int error = modify_flow(fm, rule);
- if (!error) {
- error = send_buffered_packet(ofconn, rule, fm->buffer_id);
- }
- return error;
- } else {
- return add_flow(ofconn, fm);
- }
+ struct list rules;
+ int error;
+
+ error = collect_rules_loose(ofproto, fm->table_id, &fm->cr,
+ fm->cookie, fm->cookie_mask,
+ OFPP_NONE, &rules);
+ return (error ? error
+ : list_is_empty(&rules) ? add_flow(ofproto, ofconn, fm, request)
+ : modify_flows__(ofproto, ofconn, fm, request, &rules));
}
-/* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has
- * 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(const struct flow_mod *fm, struct rule *rule)
+/* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
+ * code on failure.
+ *
+ * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
+ * if any. */
+static enum ofperr
+modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofputil_flow_mod *fm,
+ const struct ofp_header *request)
{
- size_t actions_len = fm->n_actions * sizeof *rule->actions;
+ struct list rules;
int error;
- if (fm->n_actions == rule->n_actions
- && (!fm->n_actions
- || !memcmp(fm->actions, rule->actions, actions_len))) {
- 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;
- }
- }
-
- if (!error) {
- rule->flow_cookie = fm->cookie;
- }
-
- return error;
+ error = collect_rules_strict(ofproto, fm->table_id, &fm->cr,
+ fm->cookie, fm->cookie_mask,
+ OFPP_NONE, &rules);
+ return (error ? error
+ : list_is_empty(&rules) ? add_flow(ofproto, ofconn, fm, request)
+ : list_is_singleton(&rules) ? modify_flows__(ofproto, ofconn,
+ fm, request, &rules)
+ : 0);
}
\f
/* OFPFC_DELETE implementation. */
-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)
+delete_flow__(struct rule *rule, struct ofopgroup *group)
{
- struct rule *rule, *next_rule;
- struct cls_cursor cursor;
+ struct ofproto *ofproto = rule->ofproto;
- cls_cursor_init(&cursor, &p->cls, &fm->cr);
- CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
- delete_flow(rule, htons(fm->out_port));
- }
+ ofproto_rule_send_removed(rule, OFPRR_DELETE);
+
+ ofoperation_create(group, rule, OFOPERATION_DELETE);
+ oftable_remove_rule(rule);
+ ofproto->ofproto_class->rule_destruct(rule);
}
-/* Implements OFPFC_DELETE_STRICT. */
-static void
-delete_flow_strict(struct ofproto *p, struct flow_mod *fm)
+/* Deletes the rules listed in 'rules'.
+ *
+ * Returns 0 on success, otherwise an OpenFlow error code. */
+static enum ofperr
+delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofp_header *request, struct list *rules)
{
- struct rule *rule = find_flow_strict(p, fm);
- if (rule) {
- delete_flow(rule, htons(fm->out_port));
+ struct rule *rule, *next;
+ struct ofopgroup *group;
+
+ group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX);
+ LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) {
+ delete_flow__(rule, group);
}
+ ofopgroup_submit(group);
+
+ return 0;
}
-/* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has
- * been identified as a flow to delete from 'p''s flow table, by deleting the
- * flow and sending out a OFPT_FLOW_REMOVED message to any interested
- * controller.
- *
- * Will not delete 'rule' if it is hidden. Will delete 'rule' only if
- * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the
- * specified 'out_port'. */
-static void
-delete_flow(struct rule *rule, ovs_be16 out_port)
+/* Implements OFPFC_DELETE. */
+static enum ofperr
+delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofputil_flow_mod *fm,
+ const struct ofp_header *request)
{
- if (rule_is_hidden(rule)) {
- return;
- }
+ struct list rules;
+ enum ofperr error;
- if (out_port != htons(OFPP_NONE) && !rule_has_out_port(rule, out_port)) {
- return;
- }
+ error = collect_rules_loose(ofproto, fm->table_id, &fm->cr,
+ fm->cookie, fm->cookie_mask,
+ fm->out_port, &rules);
+ return (error ? error
+ : !list_is_empty(&rules) ? delete_flows__(ofproto, ofconn, request,
+ &rules)
+ : 0);
+}
- ofproto_rule_send_removed(rule, OFPRR_DELETE);
- ofproto_rule_remove(rule);
+/* Implements OFPFC_DELETE_STRICT. */
+static enum ofperr
+delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofputil_flow_mod *fm,
+ const struct ofp_header *request)
+{
+ struct list rules;
+ enum ofperr error;
+
+ error = collect_rules_strict(ofproto, fm->table_id, &fm->cr,
+ fm->cookie, fm->cookie_mask,
+ fm->out_port, &rules);
+ return (error ? error
+ : list_is_singleton(&rules) ? delete_flows__(ofproto, ofconn,
+ request, &rules)
+ : 0);
}
static void
fr.rule = rule->cr;
fr.cookie = rule->flow_cookie;
fr.reason = reason;
- calc_flow_duration__(rule->created, &fr.duration_sec, &fr.duration_nsec);
+ calc_flow_duration__(rule->created, time_msec(),
+ &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);
}
+void
+ofproto_rule_update_used(struct rule *rule, long long int used)
+{
+ if (used > rule->used) {
+ struct eviction_group *evg = rule->eviction_group;
+
+ rule->used = used;
+ if (evg) {
+ heap_change(&evg->rules, &rule->evg_node,
+ rule_eviction_priority(rule));
+ }
+ }
+}
+
/* 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.
void
ofproto_rule_expire(struct rule *rule, uint8_t reason)
{
+ struct ofproto *ofproto = rule->ofproto;
+ struct ofopgroup *group;
+
assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT);
+
ofproto_rule_send_removed(rule, reason);
- ofproto_rule_remove(rule);
+
+ group = ofopgroup_create_unattached(ofproto);
+ ofoperation_create(group, rule, OFOPERATION_DELETE);
+ oftable_remove_rule(rule);
+ ofproto->ofproto_class->rule_destruct(rule);
+ ofopgroup_submit(group);
}
\f
-static int
+static enum ofperr
handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh)
{
- struct ofproto *p = ofconn_get_ofproto(ofconn);
- struct flow_mod fm;
- int error;
+ struct ofputil_flow_mod fm;
+ enum ofperr error;
- error = reject_slave_controller(ofconn, "flow_mod");
+ error = reject_slave_controller(ofconn);
if (error) {
return error;
}
- error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_flow_format(ofconn));
+ error = ofputil_decode_flow_mod(&fm, oh,
+ ofconn_get_flow_mod_table_id(ofconn));
if (error) {
return error;
}
if (fm.flags & OFPFF_EMERG) {
/* There isn't a good fit for an error code, so just state that the
* flow table is full. */
- return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_ALL_TABLES_FULL);
+ return OFPERR_OFPFMFC_ALL_TABLES_FULL;
}
- switch (fm.command) {
+ return handle_flow_mod__(ofconn_get_ofproto(ofconn), ofconn, &fm, oh);
+}
+
+static enum ofperr
+handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofputil_flow_mod *fm,
+ const struct ofp_header *oh)
+{
+ if (ofproto->n_pending >= 50) {
+ assert(!list_is_empty(&ofproto->pending));
+ return OFPROTO_POSTPONE;
+ }
+
+ switch (fm->command) {
case OFPFC_ADD:
- return add_flow(ofconn, &fm);
+ return add_flow(ofproto, ofconn, fm, oh);
case OFPFC_MODIFY:
- return modify_flows_loose(ofconn, &fm);
+ return modify_flows_loose(ofproto, ofconn, fm, oh);
case OFPFC_MODIFY_STRICT:
- return modify_flow_strict(ofconn, &fm);
+ return modify_flow_strict(ofproto, ofconn, fm, oh);
case OFPFC_DELETE:
- delete_flows_loose(p, &fm);
- return 0;
+ return delete_flows_loose(ofproto, ofconn, fm, oh);
case OFPFC_DELETE_STRICT:
- delete_flow_strict(p, &fm);
- return 0;
+ return delete_flow_strict(ofproto, ofconn, fm, oh);
default:
- return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND);
+ if (fm->command > 0xff) {
+ VLOG_WARN_RL(&rl, "flow_mod has explicit table_id but "
+ "flow_mod_table_id extension is not enabled");
+ }
+ return OFPERR_OFPFMFC_BAD_COMMAND;
}
}
-static int
-handle_tun_id_from_cookie(struct ofconn *ofconn, const struct ofp_header *oh)
-{
- const struct nxt_tun_id_cookie *msg
- = (const struct nxt_tun_id_cookie *) oh;
- enum nx_flow_format flow_format;
-
- flow_format = msg->set ? NXFF_TUN_ID_FROM_COOKIE : NXFF_OPENFLOW10;
- ofconn_set_flow_format(ofconn, flow_format);
-
- return 0;
-}
-
-static int
+static enum ofperr
handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh)
{
struct nx_role_request *nrr = (struct nx_role_request *) oh;
struct ofpbuf *buf;
uint32_t role;
- if (ofconn_get_type(ofconn) != OFCONN_PRIMARY) {
- VLOG_WARN_RL(&rl, "ignoring role request on service connection");
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM);
- }
-
role = ntohl(nrr->role);
if (role != NX_ROLE_OTHER && role != NX_ROLE_MASTER
&& role != NX_ROLE_SLAVE) {
- VLOG_WARN_RL(&rl, "received request for unknown role %"PRIu32, role);
+ return OFPERR_NXBRC_BAD_ROLE;
+ }
- /* There's no good error code for this. */
- return ofp_mkerr(OFPET_BAD_REQUEST, -1);
+ if (ofconn_get_role(ofconn) != role
+ && ofconn_has_pending_opgroups(ofconn)) {
+ return OFPROTO_POSTPONE;
}
ofconn_set_role(ofconn, role);
return 0;
}
-static int
+static enum ofperr
+handle_nxt_flow_mod_table_id(struct ofconn *ofconn,
+ const struct ofp_header *oh)
+{
+ const struct nx_flow_mod_table_id *msg
+ = (const struct nx_flow_mod_table_id *) oh;
+
+ ofconn_set_flow_mod_table_id(ofconn, msg->set != 0);
+ return 0;
+}
+
+static enum ofperr
handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh)
{
- const struct nxt_set_flow_format *msg
- = (const struct nxt_set_flow_format *) oh;
+ const struct nx_set_flow_format *msg
+ = (const struct nx_set_flow_format *) oh;
uint32_t format;
format = ntohl(msg->format);
- if (format == NXFF_OPENFLOW10
- || format == NXFF_TUN_ID_FROM_COOKIE
- || format == NXFF_NXM) {
- ofconn_set_flow_format(ofconn, format);
- return 0;
- } else {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM);
+ if (format != NXFF_OPENFLOW10 && format != NXFF_NXM) {
+ return OFPERR_OFPBRC_EPERM;
+ }
+
+ if (format != ofconn_get_flow_format(ofconn)
+ && ofconn_has_pending_opgroups(ofconn)) {
+ /* Avoid sending async messages in surprising flow format. */
+ return OFPROTO_POSTPONE;
}
+
+ ofconn_set_flow_format(ofconn, format);
+ return 0;
}
-static int
+static enum ofperr
+handle_nxt_set_packet_in_format(struct ofconn *ofconn,
+ const struct ofp_header *oh)
+{
+ const struct nx_set_packet_in_format *msg;
+ uint32_t format;
+
+ msg = (const struct nx_set_packet_in_format *) oh;
+ format = ntohl(msg->format);
+ if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) {
+ return OFPERR_OFPBRC_EPERM;
+ }
+
+ if (format != ofconn_get_packet_in_format(ofconn)
+ && ofconn_has_pending_opgroups(ofconn)) {
+ /* Avoid sending async message in surprsing packet in format. */
+ return OFPROTO_POSTPONE;
+ }
+
+ ofconn_set_packet_in_format(ofconn, format);
+ return 0;
+}
+
+static enum ofperr
+handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh)
+{
+ const struct nx_async_config *msg = (const struct nx_async_config *) oh;
+ uint32_t master[OAM_N_TYPES];
+ uint32_t slave[OAM_N_TYPES];
+
+ master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
+ master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
+ master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
+
+ slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
+ slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
+ slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
+
+ ofconn_set_async_config(ofconn, master, slave);
+
+ return 0;
+}
+
+static enum ofperr
handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh)
{
struct ofp_header *ob;
struct ofpbuf *buf;
- /* Currently, everything executes synchronously, so we can just
- * immediately send the barrier reply. */
+ if (ofconn_has_pending_opgroups(ofconn)) {
+ return OFPROTO_POSTPONE;
+ }
+
ob = make_openflow_xid(sizeof *ob, OFPT_BARRIER_REPLY, oh->xid, &buf);
ofconn_send_reply(ofconn, buf);
return 0;
}
-static int
+static enum ofperr
handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
{
const struct ofp_header *oh = msg->data;
const struct ofputil_msg_type *type;
- int error;
+ enum ofperr error;
error = ofputil_decode_msg_type(oh, &type);
if (error) {
return handle_set_config(ofconn, msg->data);
case OFPUTIL_OFPT_PACKET_OUT:
- return handle_packet_out(ofconn, oh);
+ return handle_packet_out(ofconn, msg->data);
case OFPUTIL_OFPT_PORT_MOD:
return handle_port_mod(ofconn, oh);
return 0;
/* Nicira extension requests. */
- case OFPUTIL_NXT_TUN_ID_FROM_COOKIE:
- return handle_tun_id_from_cookie(ofconn, 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);
+ case OFPUTIL_NXT_SET_PACKET_IN_FORMAT:
+ return handle_nxt_set_packet_in_format(ofconn, oh);
+
case OFPUTIL_NXT_FLOW_MOD:
return handle_flow_mod(ofconn, oh);
- /* OpenFlow statistics requests. */
+ case OFPUTIL_NXT_FLOW_AGE:
+ /* Nothing to do. */
+ return 0;
+
+ case OFPUTIL_NXT_SET_ASYNC_CONFIG:
+ return handle_nxt_set_async_config(ofconn, oh);
+
+ /* Statistics requests. */
case OFPUTIL_OFPST_DESC_REQUEST:
- return handle_desc_stats_request(ofconn, oh);
+ return handle_desc_stats_request(ofconn, msg->data);
case OFPUTIL_OFPST_FLOW_REQUEST:
- return handle_flow_stats_request(ofconn, oh);
+ case OFPUTIL_NXST_FLOW_REQUEST:
+ return handle_flow_stats_request(ofconn, msg->data);
case OFPUTIL_OFPST_AGGREGATE_REQUEST:
- return handle_aggregate_stats_request(ofconn, oh);
+ case OFPUTIL_NXST_AGGREGATE_REQUEST:
+ return handle_aggregate_stats_request(ofconn, msg->data);
case OFPUTIL_OFPST_TABLE_REQUEST:
- return handle_table_stats_request(ofconn, oh);
+ return handle_table_stats_request(ofconn, msg->data);
case OFPUTIL_OFPST_PORT_REQUEST:
- return handle_port_stats_request(ofconn, oh);
+ return handle_port_stats_request(ofconn, msg->data);
case OFPUTIL_OFPST_QUEUE_REQUEST:
- return handle_queue_stats_request(ofconn, oh);
-
- /* Nicira extension statistics requests. */
- case OFPUTIL_NXST_FLOW_REQUEST:
- return handle_nxst_flow(ofconn, oh);
-
- case OFPUTIL_NXST_AGGREGATE_REQUEST:
- return handle_nxst_aggregate(ofconn, oh);
+ return handle_queue_stats_request(ofconn, msg->data);
- case OFPUTIL_INVALID:
+ case OFPUTIL_MSG_INVALID:
case OFPUTIL_OFPT_HELLO:
case OFPUTIL_OFPT_ERROR:
case OFPUTIL_OFPT_FEATURES_REPLY:
case OFPUTIL_OFPST_AGGREGATE_REPLY:
case OFPUTIL_NXT_ROLE_REPLY:
case OFPUTIL_NXT_FLOW_REMOVED:
+ case OFPUTIL_NXT_PACKET_IN:
case OFPUTIL_NXST_FLOW_REPLY:
case OFPUTIL_NXST_AGGREGATE_REPLY:
default:
- if (VLOG_IS_WARN_ENABLED()) {
- char *s = ofp_to_string(oh, ntohs(oh->length), 2);
- VLOG_DBG_RL(&rl, "OpenFlow message ignored: %s", s);
- free(s);
- }
if (oh->type == OFPT_STATS_REQUEST || oh->type == OFPT_STATS_REPLY) {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT);
+ return OFPERR_OFPBRC_BAD_STAT;
} else {
- return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE);
+ return OFPERR_OFPBRC_BAD_TYPE;
}
}
}
-static void
+static bool
handle_openflow(struct ofconn *ofconn, struct ofpbuf *ofp_msg)
{
int error = handle_openflow__(ofconn, ofp_msg);
- if (error) {
- send_error_oh(ofconn, ofp_msg->data, error);
+ if (error && error != OFPROTO_POSTPONE) {
+ ofconn_send_error(ofconn, ofp_msg->data, error);
}
COVERAGE_INC(ofproto_recv_openflow);
+ return error != OFPROTO_POSTPONE;
+}
+\f
+/* Asynchronous operations. */
+
+/* Creates and returns a new ofopgroup that is not associated with any
+ * OpenFlow connection.
+ *
+ * The caller should add operations to the returned group with
+ * ofoperation_create() and then submit it with ofopgroup_submit(). */
+static struct ofopgroup *
+ofopgroup_create_unattached(struct ofproto *ofproto)
+{
+ struct ofopgroup *group = xzalloc(sizeof *group);
+ group->ofproto = ofproto;
+ list_init(&group->ofproto_node);
+ list_init(&group->ops);
+ list_init(&group->ofconn_node);
+ return group;
+}
+
+/* Creates and returns a new ofopgroup for 'ofproto'.
+ *
+ * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow
+ * connection. The 'request' and 'buffer_id' arguments are ignored.
+ *
+ * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'.
+ * If the ofopgroup eventually fails, then the error reply will include
+ * 'request'. If the ofopgroup eventually succeeds, then the packet with
+ * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto.
+ *
+ * The caller should add operations to the returned group with
+ * ofoperation_create() and then submit it with ofopgroup_submit(). */
+static struct ofopgroup *
+ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofp_header *request, uint32_t buffer_id)
+{
+ struct ofopgroup *group = ofopgroup_create_unattached(ofproto);
+ if (ofconn) {
+ size_t request_len = ntohs(request->length);
+
+ assert(ofconn_get_ofproto(ofconn) == ofproto);
+
+ ofconn_add_opgroup(ofconn, &group->ofconn_node);
+ group->ofconn = ofconn;
+ group->request = xmemdup(request, MIN(request_len, 64));
+ group->buffer_id = buffer_id;
+ }
+ return group;
+}
+
+/* Submits 'group' for processing.
+ *
+ * If 'group' contains no operations (e.g. none were ever added, or all of the
+ * ones that were added completed synchronously), then it is destroyed
+ * immediately. Otherwise it is added to the ofproto's list of pending
+ * groups. */
+static void
+ofopgroup_submit(struct ofopgroup *group)
+{
+ if (list_is_empty(&group->ops)) {
+ ofopgroup_destroy(group);
+ } else {
+ list_push_back(&group->ofproto->pending, &group->ofproto_node);
+ group->ofproto->n_pending++;
+ }
+}
+
+static void
+ofopgroup_destroy(struct ofopgroup *group)
+{
+ assert(list_is_empty(&group->ops));
+ if (!list_is_empty(&group->ofproto_node)) {
+ assert(group->ofproto->n_pending > 0);
+ group->ofproto->n_pending--;
+ list_remove(&group->ofproto_node);
+ }
+ if (!list_is_empty(&group->ofconn_node)) {
+ list_remove(&group->ofconn_node);
+ if (group->error) {
+ ofconn_send_error(group->ofconn, group->request, group->error);
+ }
+ connmgr_retry(group->ofproto->connmgr);
+ }
+ free(group->request);
+ free(group);
+}
+
+/* Initiates a new operation on 'rule', of the specified 'type', within
+ * 'group'. Prior to calling, 'rule' must not have any pending operation. */
+static void
+ofoperation_create(struct ofopgroup *group, struct rule *rule,
+ enum ofoperation_type type)
+{
+ struct ofoperation *op;
+
+ assert(!rule->pending);
+
+ op = rule->pending = xzalloc(sizeof *op);
+ op->group = group;
+ list_push_back(&group->ops, &op->group_node);
+ op->rule = rule;
+ op->type = type;
+ op->status = -1;
+ op->flow_cookie = rule->flow_cookie;
+
+ if (type == OFOPERATION_DELETE) {
+ hmap_insert(&op->group->ofproto->deletions, &op->hmap_node,
+ cls_rule_hash(&rule->cr, rule->table_id));
+ }
+}
+
+static void
+ofoperation_destroy(struct ofoperation *op)
+{
+ struct ofopgroup *group = op->group;
+
+ if (op->rule) {
+ op->rule->pending = NULL;
+ }
+ if (op->type == OFOPERATION_DELETE) {
+ hmap_remove(&group->ofproto->deletions, &op->hmap_node);
+ }
+ list_remove(&op->group_node);
+ free(op->actions);
+ free(op);
+
+ if (list_is_empty(&group->ops) && !list_is_empty(&group->ofproto_node)) {
+ ofopgroup_destroy(group);
+ }
+}
+
+/* Indicates that 'op' completed with status 'error', which is either 0 to
+ * indicate success or an OpenFlow error code on failure.
+ *
+ * If 'error' is 0, indicating success, the operation will be committed
+ * permanently to the flow table. There is one interesting subcase:
+ *
+ * - If 'op' is an "add flow" operation that is replacing an existing rule in
+ * the flow table (the "victim" rule) by a new one, then the caller must
+ * have uninitialized any derived state in the victim rule, as in step 5 in
+ * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete()
+ * performs steps 6 and 7 for the victim rule, most notably by calling its
+ * ->rule_dealloc() function.
+ *
+ * If 'error' is nonzero, then generally the operation will be rolled back:
+ *
+ * - If 'op' is an "add flow" operation, ofproto removes the new rule or
+ * restores the original rule. The caller must have uninitialized any
+ * derived state in the new rule, as in step 5 of in the "Life Cycle" in
+ * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and
+ * and 7 for the new rule, calling its ->rule_dealloc() function.
+ *
+ * - If 'op' is a "modify flow" operation, ofproto restores the original
+ * actions.
+ *
+ * - 'op' must not be a "delete flow" operation. Removing a rule is not
+ * allowed to fail. It must always succeed.
+ *
+ * Please see the large comment in ofproto/ofproto-provider.h titled
+ * "Asynchronous Operation Support" for more information. */
+void
+ofoperation_complete(struct ofoperation *op, enum ofperr error)
+{
+ struct ofopgroup *group = op->group;
+ struct rule *rule = op->rule;
+ struct ofproto *ofproto = rule->ofproto;
+
+ assert(rule->pending == op);
+ assert(op->status < 0);
+
+ if (!error
+ && !group->error
+ && op->type != OFOPERATION_DELETE
+ && group->ofconn
+ && group->buffer_id != UINT32_MAX
+ && list_is_singleton(&op->group_node)) {
+ struct ofpbuf *packet;
+ uint16_t in_port;
+
+ error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id,
+ &packet, &in_port);
+ if (packet) {
+ assert(!error);
+ error = rule_execute(rule, in_port, packet);
+ }
+ }
+ if (!group->error) {
+ group->error = error;
+ }
+
+ switch (op->type) {
+ case OFOPERATION_ADD:
+ if (!error) {
+ ofproto_rule_destroy__(op->victim);
+ if ((rule->cr.wc.vlan_tci_mask & htons(VLAN_VID_MASK))
+ == htons(VLAN_VID_MASK)) {
+ if (ofproto->vlan_bitmap) {
+ uint16_t vid = vlan_tci_to_vid(rule->cr.flow.vlan_tci);
+
+ if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) {
+ bitmap_set1(ofproto->vlan_bitmap, vid);
+ ofproto->vlans_changed = true;
+ }
+ } else {
+ ofproto->vlans_changed = true;
+ }
+ }
+ } else {
+ oftable_substitute_rule(rule, op->victim);
+ ofproto_rule_destroy__(rule);
+ }
+ break;
+
+ case OFOPERATION_DELETE:
+ assert(!error);
+ ofproto_rule_destroy__(rule);
+ op->rule = NULL;
+ break;
+
+ case OFOPERATION_MODIFY:
+ if (!error) {
+ rule->modified = time_msec();
+ } else {
+ free(rule->actions);
+ rule->actions = op->actions;
+ rule->n_actions = op->n_actions;
+ op->actions = NULL;
+ }
+ break;
+
+ default:
+ NOT_REACHED();
+ }
+ ofoperation_destroy(op);
+}
+
+struct rule *
+ofoperation_get_victim(struct ofoperation *op)
+{
+ assert(op->type == OFOPERATION_ADD);
+ return op->victim;
}
\f
static uint64_t
return eth_addr_to_uint64(ea);
}
\f
+/* Table overflow policy. */
+
+/* Chooses and returns a rule to evict from 'table'. Returns NULL if the table
+ * is not configured to evict rules or if the table contains no evictable
+ * rules. (Rules with 'evictable' set to false or with no timeouts are not
+ * evictable.) */
+static struct rule *
+choose_rule_to_evict(struct oftable *table)
+{
+ struct eviction_group *evg;
+
+ if (!table->eviction_fields) {
+ return NULL;
+ }
+
+ /* In the common case, the outer and inner loops here will each be entered
+ * exactly once:
+ *
+ * - The inner loop normally "return"s in its first iteration. If the
+ * eviction group has any evictable rules, then it always returns in
+ * some iteration.
+ *
+ * - The outer loop only iterates more than once if the largest eviction
+ * group has no evictable rules.
+ *
+ * - The outer loop can exit only if table's 'max_flows' is all filled up
+ * by unevictable rules'. */
+ HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
+ struct rule *rule;
+
+ HEAP_FOR_EACH (rule, evg_node, &evg->rules) {
+ if (rule->evictable) {
+ return rule;
+ }
+ }
+ }
+
+ return NULL;
+}
+
+/* Searches 'ofproto' for tables that have more flows than their configured
+ * maximum and that have flow eviction enabled, and evicts as many flows as
+ * necessary and currently feasible from them.
+ *
+ * This triggers only when an OpenFlow table has N flows in it and then the
+ * client configures a maximum number of flows less than N. */
+static void
+ofproto_evict(struct ofproto *ofproto)
+{
+ struct ofopgroup *group;
+ struct oftable *table;
+
+ group = ofopgroup_create_unattached(ofproto);
+ OFPROTO_FOR_EACH_TABLE (table, ofproto) {
+ while (classifier_count(&table->cls) > table->max_flows
+ && table->eviction_fields) {
+ struct rule *rule;
+
+ rule = choose_rule_to_evict(table);
+ if (!rule || rule->pending) {
+ break;
+ }
+
+ ofoperation_create(group, rule, OFOPERATION_DELETE);
+ oftable_remove_rule(rule);
+ ofproto->ofproto_class->rule_destruct(rule);
+ }
+ }
+ ofopgroup_submit(group);
+}
+\f
+/* Eviction groups. */
+
+/* Returns the priority to use for an eviction_group that contains 'n_rules'
+ * rules. The priority contains low-order random bits to ensure that eviction
+ * groups with the same number of rules are prioritized randomly. */
+static uint32_t
+eviction_group_priority(size_t n_rules)
+{
+ uint16_t size = MIN(UINT16_MAX, n_rules);
+ return (size << 16) | random_uint16();
+}
+
+/* Updates 'evg', an eviction_group within 'table', following a change that
+ * adds or removes rules in 'evg'. */
+static void
+eviction_group_resized(struct oftable *table, struct eviction_group *evg)
+{
+ heap_change(&table->eviction_groups_by_size, &evg->size_node,
+ eviction_group_priority(heap_count(&evg->rules)));
+}
+
+/* Destroys 'evg', an eviction_group within 'table':
+ *
+ * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the
+ * rules themselves, just removes them from the eviction group.)
+ *
+ * - Removes 'evg' from 'table'.
+ *
+ * - Frees 'evg'. */
+static void
+eviction_group_destroy(struct oftable *table, struct eviction_group *evg)
+{
+ while (!heap_is_empty(&evg->rules)) {
+ struct rule *rule;
+
+ rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node);
+ rule->eviction_group = NULL;
+ }
+ hmap_remove(&table->eviction_groups_by_id, &evg->id_node);
+ heap_remove(&table->eviction_groups_by_size, &evg->size_node);
+ heap_destroy(&evg->rules);
+ free(evg);
+}
+
+/* Removes 'rule' from its eviction group, if any. */
+static void
+eviction_group_remove_rule(struct rule *rule)
+{
+ if (rule->eviction_group) {
+ struct oftable *table = &rule->ofproto->tables[rule->table_id];
+ struct eviction_group *evg = rule->eviction_group;
+
+ rule->eviction_group = NULL;
+ heap_remove(&evg->rules, &rule->evg_node);
+ if (heap_is_empty(&evg->rules)) {
+ eviction_group_destroy(table, evg);
+ } else {
+ eviction_group_resized(table, evg);
+ }
+ }
+}
+
+/* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and
+ * returns the hash value. */
+static uint32_t
+eviction_group_hash_rule(struct rule *rule)
+{
+ struct oftable *table = &rule->ofproto->tables[rule->table_id];
+ const struct mf_subfield *sf;
+ uint32_t hash;
+
+ hash = table->eviction_group_id_basis;
+ for (sf = table->eviction_fields;
+ sf < &table->eviction_fields[table->n_eviction_fields];
+ sf++)
+ {
+ if (mf_are_prereqs_ok(sf->field, &rule->cr.flow)) {
+ union mf_value value;
+
+ mf_get_value(sf->field, &rule->cr.flow, &value);
+ if (sf->ofs) {
+ bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs);
+ }
+ if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) {
+ unsigned int start = sf->ofs + sf->n_bits;
+ bitwise_zero(&value, sf->field->n_bytes, start,
+ sf->field->n_bytes * 8 - start);
+ }
+ hash = hash_bytes(&value, sf->field->n_bytes, hash);
+ } else {
+ hash = hash_int(hash, 0);
+ }
+ }
+
+ return hash;
+}
+
+/* Returns an eviction group within 'table' with the given 'id', creating one
+ * if necessary. */
+static struct eviction_group *
+eviction_group_find(struct oftable *table, uint32_t id)
+{
+ struct eviction_group *evg;
+
+ HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) {
+ return evg;
+ }
+
+ evg = xmalloc(sizeof *evg);
+ hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id);
+ heap_insert(&table->eviction_groups_by_size, &evg->size_node,
+ eviction_group_priority(0));
+ heap_init(&evg->rules);
+
+ return evg;
+}
+
+/* Returns an eviction priority for 'rule'. The return value should be
+ * interpreted so that higher priorities make a rule more attractive candidates
+ * for eviction. */
+static uint32_t
+rule_eviction_priority(struct rule *rule)
+{
+ long long int hard_expiration;
+ long long int idle_expiration;
+ long long int expiration;
+ uint32_t expiration_offset;
+
+ /* Calculate time of expiration. */
+ hard_expiration = (rule->hard_timeout
+ ? rule->modified + rule->hard_timeout * 1000
+ : LLONG_MAX);
+ idle_expiration = (rule->idle_timeout
+ ? rule->used + rule->idle_timeout * 1000
+ : LLONG_MAX);
+ expiration = MIN(hard_expiration, idle_expiration);
+ if (expiration == LLONG_MAX) {
+ return 0;
+ }
+
+ /* Calculate the time of expiration as a number of (approximate) seconds
+ * after program startup.
+ *
+ * This should work OK for program runs that last UINT32_MAX seconds or
+ * less. Therefore, please restart OVS at least once every 136 years. */
+ expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10);
+
+ /* Invert the expiration offset because we're using a max-heap. */
+ return UINT32_MAX - expiration_offset;
+}
+
+/* Adds 'rule' to an appropriate eviction group for its oftable's
+ * configuration. Does nothing if 'rule''s oftable doesn't have eviction
+ * enabled, or if 'rule' is a permanent rule (one that will never expire on its
+ * own).
+ *
+ * The caller must ensure that 'rule' is not already in an eviction group. */
+static void
+eviction_group_add_rule(struct rule *rule)
+{
+ struct ofproto *ofproto = rule->ofproto;
+ struct oftable *table = &ofproto->tables[rule->table_id];
+
+ if (table->eviction_fields
+ && (rule->hard_timeout || rule->idle_timeout)) {
+ struct eviction_group *evg;
+
+ evg = eviction_group_find(table, eviction_group_hash_rule(rule));
+
+ rule->eviction_group = evg;
+ heap_insert(&evg->rules, &rule->evg_node,
+ rule_eviction_priority(rule));
+ eviction_group_resized(table, evg);
+ }
+}
+\f
+/* oftables. */
+
+/* Initializes 'table'. */
+static void
+oftable_init(struct oftable *table)
+{
+ memset(table, 0, sizeof *table);
+ classifier_init(&table->cls);
+}
+
+/* Destroys 'table', including its classifier and eviction groups.
+ *
+ * The caller is responsible for freeing 'table' itself. */
+static void
+oftable_destroy(struct oftable *table)
+{
+ assert(classifier_is_empty(&table->cls));
+ oftable_disable_eviction(table);
+ classifier_destroy(&table->cls);
+ free(table->name);
+}
+
+/* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty
+ * string, then 'table' will use its default name.
+ *
+ * This only affects the name exposed for a table exposed through the OpenFlow
+ * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */
+static void
+oftable_set_name(struct oftable *table, const char *name)
+{
+ if (name && name[0]) {
+ int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN);
+ if (!table->name || strncmp(name, table->name, len)) {
+ free(table->name);
+ table->name = xmemdup0(name, len);
+ }
+ } else {
+ free(table->name);
+ table->name = NULL;
+ }
+}
+
+/* oftables support a choice of two policies when adding a rule would cause the
+ * number of flows in the table to exceed the configured maximum number: either
+ * they can refuse to add the new flow or they can evict some existing flow.
+ * This function configures the former policy on 'table'. */
+static void
+oftable_disable_eviction(struct oftable *table)
+{
+ if (table->eviction_fields) {
+ struct eviction_group *evg, *next;
+
+ HMAP_FOR_EACH_SAFE (evg, next, id_node,
+ &table->eviction_groups_by_id) {
+ eviction_group_destroy(table, evg);
+ }
+ hmap_destroy(&table->eviction_groups_by_id);
+ heap_destroy(&table->eviction_groups_by_size);
+
+ free(table->eviction_fields);
+ table->eviction_fields = NULL;
+ table->n_eviction_fields = 0;
+ }
+}
+
+/* oftables support a choice of two policies when adding a rule would cause the
+ * number of flows in the table to exceed the configured maximum number: either
+ * they can refuse to add the new flow or they can evict some existing flow.
+ * This function configures the latter policy on 'table', with fairness based
+ * on the values of the 'n_fields' fields specified in 'fields'. (Specifying
+ * 'n_fields' as 0 disables fairness.) */
+static void
+oftable_enable_eviction(struct oftable *table,
+ const struct mf_subfield *fields, size_t n_fields)
+{
+ struct cls_cursor cursor;
+ struct rule *rule;
+
+ if (table->eviction_fields
+ && n_fields == table->n_eviction_fields
+ && (!n_fields
+ || !memcmp(fields, table->eviction_fields,
+ n_fields * sizeof *fields))) {
+ /* No change. */
+ return;
+ }
+
+ oftable_disable_eviction(table);
+
+ table->n_eviction_fields = n_fields;
+ table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields);
+
+ table->eviction_group_id_basis = random_uint32();
+ hmap_init(&table->eviction_groups_by_id);
+ heap_init(&table->eviction_groups_by_size);
+
+ cls_cursor_init(&cursor, &table->cls, NULL);
+ CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
+ eviction_group_add_rule(rule);
+ }
+}
+
+/* Removes 'rule' from the oftable that contains it. */
+static void
+oftable_remove_rule(struct rule *rule)
+{
+ struct ofproto *ofproto = rule->ofproto;
+ struct oftable *table = &ofproto->tables[rule->table_id];
+
+ classifier_remove(&table->cls, &rule->cr);
+ eviction_group_remove_rule(rule);
+}
+
+/* Inserts 'rule' into its oftable. Removes any existing rule from 'rule''s
+ * oftable that has an identical cls_rule. Returns the rule that was removed,
+ * if any, and otherwise NULL. */
+static struct rule *
+oftable_replace_rule(struct rule *rule)
+{
+ struct ofproto *ofproto = rule->ofproto;
+ struct oftable *table = &ofproto->tables[rule->table_id];
+ struct rule *victim;
+
+ victim = rule_from_cls_rule(classifier_replace(&table->cls, &rule->cr));
+ if (victim) {
+ eviction_group_remove_rule(victim);
+ }
+ eviction_group_add_rule(rule);
+ return victim;
+}
+
+/* Removes 'old' from its oftable then, if 'new' is nonnull, inserts 'new'. */
+static void
+oftable_substitute_rule(struct rule *old, struct rule *new)
+{
+ if (new) {
+ oftable_replace_rule(new);
+ } else {
+ oftable_remove_rule(old);
+ }
+}
+\f
/* unixctl commands. */
struct ofproto *
}
static void
-ofproto_unixctl_list(struct unixctl_conn *conn, const char *arg OVS_UNUSED,
- void *aux OVS_UNUSED)
+ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED,
+ const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
{
struct ofproto *ofproto;
struct ds results;
}
registered = true;
- unixctl_command_register("ofproto/list", ofproto_unixctl_list, NULL);
+ unixctl_command_register("ofproto/list", "", 0, 0,
+ ofproto_unixctl_list, NULL);
+}
+\f
+/* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
+ *
+ * This is deprecated. It is only for compatibility with broken device drivers
+ * in old versions of Linux that do not properly support VLANs when VLAN
+ * devices are not used. When broken device drivers are no longer in
+ * widespread use, we will delete these interfaces. */
+
+/* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched
+ * (exactly) by an OpenFlow rule in 'ofproto'. */
+void
+ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap)
+{
+ const struct oftable *oftable;
+
+ free(ofproto->vlan_bitmap);
+ ofproto->vlan_bitmap = bitmap_allocate(4096);
+ ofproto->vlans_changed = false;
+
+ OFPROTO_FOR_EACH_TABLE (oftable, ofproto) {
+ const struct cls_table *table;
+
+ HMAP_FOR_EACH (table, hmap_node, &oftable->cls.tables) {
+ if ((table->wc.vlan_tci_mask & htons(VLAN_VID_MASK))
+ == htons(VLAN_VID_MASK)) {
+ const struct cls_rule *rule;
+
+ HMAP_FOR_EACH (rule, hmap_node, &table->rules) {
+ uint16_t vid = vlan_tci_to_vid(rule->flow.vlan_tci);
+ bitmap_set1(vlan_bitmap, vid);
+ bitmap_set1(ofproto->vlan_bitmap, vid);
+ }
+ }
+ }
+ }
+}
+
+/* Returns true if new VLANs have come into use by the flow table since the
+ * last call to ofproto_get_vlan_usage().
+ *
+ * We don't track when old VLANs stop being used. */
+bool
+ofproto_has_vlan_usage_changed(const struct ofproto *ofproto)
+{
+ return ofproto->vlans_changed;
+}
+
+/* Configures a VLAN splinter binding between the ports identified by OpenFlow
+ * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If
+ * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real
+ * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero,
+ * then the VLAN device is un-enslaved. */
+int
+ofproto_port_set_realdev(struct ofproto *ofproto, uint16_t vlandev_ofp_port,
+ uint16_t realdev_ofp_port, int vid)
+{
+ struct ofport *ofport;
+ int error;
+
+ assert(vlandev_ofp_port != realdev_ofp_port);
+
+ ofport = ofproto_get_port(ofproto, vlandev_ofp_port);
+ if (!ofport) {
+ VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16,
+ ofproto->name, vlandev_ofp_port);
+ return EINVAL;
+ }
+
+ if (!ofproto->ofproto_class->set_realdev) {
+ if (!vlandev_ofp_port) {
+ return 0;
+ }
+ VLOG_WARN("%s: vlan splinters not supported", ofproto->name);
+ return EOPNOTSUPP;
+ }
+
+ error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid);
+ if (error) {
+ VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)",
+ ofproto->name, vlandev_ofp_port,
+ netdev_get_name(ofport->netdev), strerror(error));
+ }
+ return error;
}
git://git.onelab.eu / sliver-openvswitch.git / blobdiff