/*
- * 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 "dpif.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 "netdev.h"
-#include "netflow.h"
-#include "netlink.h"
#include "nx-match.h"
-#include "odp-util.h"
#include "ofp-print.h"
#include "ofp-util.h"
-#include "ofproto-sflow.h"
#include "ofpbuf.h"
+#include "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 "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(facet_changed_rule);
-COVERAGE_DEFINE(facet_revalidate);
-COVERAGE_DEFINE(odp_overflow);
-COVERAGE_DEFINE(ofproto_agg_request);
-COVERAGE_DEFINE(ofproto_costly_flags);
-COVERAGE_DEFINE(ofproto_ctlr_action);
-COVERAGE_DEFINE(ofproto_del_rule);
COVERAGE_DEFINE(ofproto_error);
-COVERAGE_DEFINE(ofproto_expiration);
-COVERAGE_DEFINE(ofproto_expired);
-COVERAGE_DEFINE(ofproto_flows_req);
COVERAGE_DEFINE(ofproto_flush);
-COVERAGE_DEFINE(ofproto_invalidated);
COVERAGE_DEFINE(ofproto_no_packet_in);
-COVERAGE_DEFINE(ofproto_ofp2odp);
-COVERAGE_DEFINE(ofproto_packet_in);
COVERAGE_DEFINE(ofproto_packet_out);
COVERAGE_DEFINE(ofproto_queue_req);
COVERAGE_DEFINE(ofproto_recv_openflow);
COVERAGE_DEFINE(ofproto_reinit_ports);
-COVERAGE_DEFINE(ofproto_unexpected_rule);
COVERAGE_DEFINE(ofproto_uninstallable);
COVERAGE_DEFINE(ofproto_update_port);
-/* Maximum depth of flow table recursion (due to NXAST_RESUBMIT actions) in a
- * flow translation. */
-#define MAX_RESUBMIT_RECURSION 16
+enum ofproto_state {
+ S_OPENFLOW, /* Processing OpenFlow commands. */
+ S_FLUSH, /* Deleting all flow table rules. */
+};
-struct rule;
+enum ofoperation_type {
+ OFOPERATION_ADD,
+ OFOPERATION_DELETE,
+ OFOPERATION_MODIFY
+};
-#define MAX_MIRRORS 32
-typedef uint32_t mirror_mask_t;
-#define MIRROR_MASK_C(X) UINT32_C(X)
-BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS);
-struct ofmirror {
+/* 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. */
- size_t idx; /* In ofproto's "mirrors" array. */
- void *aux; /* Key supplied by ofproto's client. */
- char *name; /* Identifier for log messages. */
-
- /* Selection criteria. */
- struct hmapx srcs; /* Contains "struct ofbundle *"s. */
- struct hmapx dsts; /* Contains "struct ofbundle *"s. */
- unsigned long *vlans; /* Bitmap of chosen VLANs, NULL selects all. */
-
- /* Output (mutually exclusive). */
- struct ofbundle *out; /* Output port or NULL. */
- int out_vlan; /* Output VLAN or -1. */
-};
+ struct list ofproto_node; /* In ofproto's "pending" list. */
+ struct list ops; /* List of "struct ofoperation"s. */
-static void ofproto_mirror_destroy(struct ofmirror *);
+ /* 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. */
+};
-/* A group of one or more OpenFlow ports. */
-#define OFBUNDLE_FLOOD ((struct ofbundle *) 1)
-struct ofbundle {
- struct ofproto *ofproto; /* Owning ofproto. */
- struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
- void *aux; /* Key supplied by ofproto's client. */
- char *name; /* Identifier for log messages. */
-
- /* Configuration. */
- struct list ports; /* Contains "struct ofport"s. */
- int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
- unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
- * NULL if all VLANs are trunked. */
- struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */
- struct bond *bond; /* Bonding setup if more than one port,
- * otherwise NULL. */
-
- /* Status. */
- bool floodable; /* True if no port has OFPPC_NO_FLOOD set. */
-
- /* Port mirroring info. */
- mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */
- mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */
- mirror_mask_t mirror_out; /* Mirrors that output to this bundle. */
+static 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. */
};
-/* An OpenFlow port. */
-struct ofport {
- struct ofproto *ofproto; /* Owning ofproto. */
- struct hmap_node hmap_node; /* In struct ofproto's "ports" hmap. */
- struct netdev *netdev;
- struct ofp_phy_port opp;
- uint16_t odp_port;
+static void ofoperation_create(struct ofopgroup *, struct rule *,
+ enum ofoperation_type);
+static void ofoperation_destroy(struct ofoperation *);
- /* Bridging. */
- struct ofbundle *bundle; /* Bundle that contains this port, if any. */
- struct list bundle_node; /* In struct ofbundle's "ports" list. */
- struct cfm *cfm; /* Connectivity Fault Management, if any. */
- tag_type tag; /* Tag associated with this port. */
-};
+static void ofport_destroy__(struct ofport *);
+static void ofport_destroy(struct ofport *);
-static void ofport_free(struct ofport *);
-static void ofport_run(struct ofport *);
-static void ofport_wait(struct ofport *);
+static uint64_t pick_datapath_id(const struct ofproto *);
+static uint64_t pick_fallback_dpid(void);
-struct action_xlate_ctx {
-/* action_xlate_ctx_init() initializes these members. */
+static void ofproto_destroy__(struct ofproto *);
- /* The ofproto. */
- struct ofproto *ofproto;
+static void ofproto_rule_destroy__(struct rule *);
+static void ofproto_rule_send_removed(struct rule *, uint8_t reason);
- /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
- * this flow when actions change header fields. */
- struct flow flow;
+static void ofopgroup_destroy(struct ofopgroup *);
- /* The packet corresponding to 'flow', or a null pointer if we are
- * revalidating without a packet to refer to. */
- const struct ofpbuf *packet;
+static int add_flow(struct ofproto *, struct ofconn *,
+ const struct ofputil_flow_mod *,
+ const struct ofp_header *);
- /* If nonnull, called just before executing a resubmit action.
- *
- * This is normally null so the client has to set it manually after
- * calling action_xlate_ctx_init(). */
- void (*resubmit_hook)(struct action_xlate_ctx *, struct rule *);
-
- /* If true, the speciality of 'flow' should be checked before executing
- * its actions. If special_cb returns false on 'flow' rendered
- * uninstallable and no actions will be executed. */
- bool check_special;
-
-/* xlate_actions() initializes and uses these members. The client might want
- * to look at them after it returns. */
-
- struct ofpbuf *odp_actions; /* Datapath actions. */
- tag_type tags; /* Tags associated with OFPP_NORMAL actions. */
- bool may_set_up_flow; /* True ordinarily; false if the actions must
- * be reassessed for every packet. */
- uint16_t nf_output_iface; /* Output interface index for NetFlow. */
-
-/* xlate_actions() initializes and uses these members, but the client has no
- * reason to look at them. */
-
- int recurse; /* Recursion level, via xlate_table_action. */
- int last_pop_priority; /* Offset in 'odp_actions' just past most
- * recent ODP_ACTION_ATTR_SET_PRIORITY. */
-};
+static bool handle_openflow(struct ofconn *, struct ofpbuf *);
+static int handle_flow_mod__(struct ofproto *, struct ofconn *,
+ const struct ofputil_flow_mod *,
+ const struct ofp_header *);
-static void action_xlate_ctx_init(struct action_xlate_ctx *,
- struct ofproto *, const struct flow *,
- const struct ofpbuf *);
-static struct ofpbuf *xlate_actions(struct action_xlate_ctx *,
- const union ofp_action *in, size_t n_in);
+static void update_port(struct ofproto *, const char *devname);
+static int init_ports(struct ofproto *);
+static void reinit_ports(struct ofproto *);
+static void set_internal_devs_mtu(struct ofproto *);
-/* An OpenFlow flow. */
-struct rule {
- long long int used; /* Time last used; time created if not used. */
- long long int created; /* Creation time. */
+static void ofproto_unixctl_init(void);
- /* These statistics:
- *
- * - Do include packets and bytes from facets that have been deleted or
- * whose own statistics have been folded into the rule.
- *
- * - Do include packets and bytes sent "by hand" that were accounted to
- * the rule without any facet being involved (this is a rare corner
- * case in rule_execute()).
- *
- * - Do not include packet or bytes that can be obtained from any facet's
- * packet_count or byte_count member or that can be obtained from the
- * datapath by, e.g., dpif_flow_get() for any facet.
- */
- uint64_t packet_count; /* Number of packets received. */
- uint64_t byte_count; /* Number of bytes received. */
-
- ovs_be64 flow_cookie; /* Controller-issued identifier. */
-
- struct cls_rule cr; /* In owning ofproto's classifier. */
- uint16_t idle_timeout; /* In seconds from time of last use. */
- uint16_t hard_timeout; /* In seconds from time of creation. */
- bool send_flow_removed; /* Send a flow removed message? */
- int n_actions; /* Number of elements in actions[]. */
- union ofp_action *actions; /* OpenFlow actions. */
- struct list facets; /* List of "struct facet"s. */
-};
+/* All registered ofproto classes, in probe order. */
+static const struct ofproto_class **ofproto_classes;
+static size_t n_ofproto_classes;
+static size_t allocated_ofproto_classes;
+
+/* Map from datapath name to struct ofproto, for use by unixctl commands. */
+static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos);
-static struct rule *rule_from_cls_rule(const struct cls_rule *);
-static bool rule_is_hidden(const struct rule *);
+static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
-static struct rule *rule_create(const struct cls_rule *,
- const union ofp_action *, size_t n_actions,
- uint16_t idle_timeout, uint16_t hard_timeout,
- ovs_be64 flow_cookie, bool send_flow_removed);
-static void rule_destroy(struct ofproto *, struct rule *);
-static void rule_free(struct rule *);
+static void
+ofproto_initialize(void)
+{
+ static bool inited;
-static struct rule *rule_lookup(struct ofproto *, const struct flow *);
-static void rule_insert(struct ofproto *, struct rule *);
-static void rule_remove(struct ofproto *, struct rule *);
+ if (!inited) {
+ inited = true;
+ ofproto_class_register(&ofproto_dpif_class);
+ }
+}
-static void rule_send_removed(struct ofproto *, struct rule *, uint8_t reason);
-static void rule_get_stats(const struct rule *, uint64_t *packets,
- uint64_t *bytes);
+/* 'type' should be a normalized datapath type, as returned by
+ * ofproto_normalize_type(). Returns the corresponding ofproto_class
+ * structure, or a null pointer if there is none registered for 'type'. */
+static const struct ofproto_class *
+ofproto_class_find__(const char *type)
+{
+ size_t i;
-/* An exact-match instantiation of an OpenFlow flow. */
-struct facet {
- long long int used; /* Time last used; time created if not used. */
+ ofproto_initialize();
+ for (i = 0; i < n_ofproto_classes; i++) {
+ const struct ofproto_class *class = ofproto_classes[i];
+ struct sset types;
+ bool found;
- /* These statistics:
- *
- * - Do include packets and bytes sent "by hand", e.g. with
- * dpif_execute().
- *
- * - Do include packets and bytes that were obtained from the datapath
- * when a flow was deleted (e.g. dpif_flow_del()) or when its
- * statistics were reset (e.g. dpif_flow_put() with
- * DPIF_FP_ZERO_STATS).
- *
- * - Do not include any packets or bytes that can currently be obtained
- * from the datapath by, e.g., dpif_flow_get().
- */
- uint64_t packet_count; /* Number of packets received. */
- uint64_t byte_count; /* Number of bytes received. */
-
- uint64_t dp_packet_count; /* Last known packet count in the datapath. */
- uint64_t dp_byte_count; /* Last known byte count in the datapath. */
-
- uint64_t rs_packet_count; /* Packets pushed to resubmit children. */
- uint64_t rs_byte_count; /* Bytes pushed to resubmit children. */
- long long int rs_used; /* Used time pushed to resubmit children. */
-
- /* Number of bytes passed to account_cb. This may include bytes that can
- * currently obtained from the datapath (thus, it can be greater than
- * byte_count). */
- uint64_t accounted_bytes;
-
- struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */
- struct list list_node; /* In owning rule's 'facets' list. */
- struct rule *rule; /* Owning rule. */
- struct flow flow; /* Exact-match flow. */
- bool installed; /* Installed in datapath? */
- bool may_install; /* True ordinarily; false if actions must
- * be reassessed for every packet. */
- size_t actions_len; /* Number of bytes in actions[]. */
- struct nlattr *actions; /* Datapath actions. */
- tag_type tags; /* Tags. */
- struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
-};
+ sset_init(&types);
+ class->enumerate_types(&types);
+ found = sset_contains(&types, type);
+ sset_destroy(&types);
-static struct facet *facet_create(struct ofproto *, struct rule *,
- const struct flow *,
- const struct ofpbuf *packet);
-static void facet_remove(struct ofproto *, struct facet *);
-static void facet_free(struct facet *);
-
-static struct facet *facet_lookup_valid(struct ofproto *, const struct flow *);
-static bool facet_revalidate(struct ofproto *, struct facet *);
-
-static void facet_install(struct ofproto *, struct facet *, bool zero_stats);
-static void facet_uninstall(struct ofproto *, struct facet *);
-static void facet_flush_stats(struct ofproto *, struct facet *);
-
-static void facet_make_actions(struct ofproto *, struct facet *,
- const struct ofpbuf *packet);
-static void facet_update_stats(struct ofproto *, struct facet *,
- const struct dpif_flow_stats *);
-static void facet_push_stats(struct ofproto *, struct facet *);
-
-static void send_packet_in(struct ofproto *, struct dpif_upcall *,
- const struct flow *, bool clone);
-
-struct ofproto {
- char *name; /* Datapath name. */
- struct hmap_node hmap_node; /* In global 'all_ofprotos' hmap. */
-
- /* Settings. */
- uint64_t datapath_id; /* Datapath ID. */
- uint64_t fallback_dpid; /* Datapath ID if no better choice found. */
- char *mfr_desc; /* Manufacturer. */
- char *hw_desc; /* Hardware. */
- char *sw_desc; /* Software version. */
- char *serial_desc; /* Serial number. */
- char *dp_desc; /* Datapath description. */
-
- /* Datapath. */
- struct dpif *dpif;
- struct netdev_monitor *netdev_monitor;
- struct hmap ports; /* Contains "struct ofport"s. */
- struct shash port_by_name;
- uint32_t max_ports;
-
- /* Bridging. */
- struct netflow *netflow;
- struct ofproto_sflow *sflow;
- struct hmap bundles; /* Contains "struct ofbundle"s. */
- struct mac_learning *ml;
- struct ofmirror *mirrors[MAX_MIRRORS];
- bool has_bonded_bundles;
-
- /* Flow table. */
- struct classifier cls;
- struct timer next_expiration;
-
- /* Facets. */
- struct hmap facets;
- bool need_revalidate;
- struct tag_set revalidate_set;
-
- /* OpenFlow connections. */
- struct connmgr *connmgr;
-};
+ if (found) {
+ return class;
+ }
+ }
+ VLOG_WARN("unknown datapath type %s", type);
+ return NULL;
+}
-/* Map from dpif name to struct ofproto, for use by unixctl commands. */
-static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos);
+/* Registers a new ofproto class. After successful registration, new ofprotos
+ * of that type can be created using ofproto_create(). */
+int
+ofproto_class_register(const struct ofproto_class *new_class)
+{
+ size_t i;
-static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+ for (i = 0; i < n_ofproto_classes; i++) {
+ if (ofproto_classes[i] == new_class) {
+ return EEXIST;
+ }
+ }
-static uint64_t pick_datapath_id(const struct ofproto *);
-static uint64_t pick_fallback_dpid(void);
+ if (n_ofproto_classes >= allocated_ofproto_classes) {
+ ofproto_classes = x2nrealloc(ofproto_classes,
+ &allocated_ofproto_classes,
+ sizeof *ofproto_classes);
+ }
+ ofproto_classes[n_ofproto_classes++] = new_class;
+ return 0;
+}
-static void ofproto_flush_flows__(struct ofproto *);
-static int ofproto_expire(struct ofproto *);
-static void flow_push_stats(struct ofproto *, const struct rule *,
- struct flow *, uint64_t packets, uint64_t bytes,
- long long int used);
+/* Unregisters a datapath provider. 'type' must have been previously
+ * registered and not currently be in use by any ofprotos. After
+ * unregistration new datapaths of that type cannot be opened using
+ * ofproto_create(). */
+int
+ofproto_class_unregister(const struct ofproto_class *class)
+{
+ size_t i;
-static void handle_upcall(struct ofproto *, struct dpif_upcall *);
+ for (i = 0; i < n_ofproto_classes; i++) {
+ if (ofproto_classes[i] == class) {
+ for (i++; i < n_ofproto_classes; i++) {
+ ofproto_classes[i - 1] = ofproto_classes[i];
+ }
+ n_ofproto_classes--;
+ return 0;
+ }
+ }
+ VLOG_WARN("attempted to unregister an ofproto class that is not "
+ "registered");
+ return EAFNOSUPPORT;
+}
-static void handle_openflow(struct ofconn *, struct ofpbuf *);
+/* Clears 'types' and enumerates all registered ofproto types into it. The
+ * caller must first initialize the sset. */
+void
+ofproto_enumerate_types(struct sset *types)
+{
+ size_t i;
-static struct ofport *get_port(const struct ofproto *, uint16_t odp_port);
-static void update_port(struct ofproto *, const char *devname);
-static int init_ports(struct ofproto *);
-static void reinit_ports(struct ofproto *);
+ ofproto_initialize();
+ for (i = 0; i < n_ofproto_classes; i++) {
+ ofproto_classes[i]->enumerate_types(types);
+ }
+}
-static void update_learning_table(struct ofproto *,
- const struct flow *, int vlan,
- struct ofbundle *);
-static bool is_admissible(struct ofproto *, const struct flow *,
- bool have_packet, tag_type *, int *vlanp,
- struct ofbundle **in_bundlep);
+/* Returns the fully spelled out name for the given ofproto 'type'.
+ *
+ * Normalized type string can be compared with strcmp(). Unnormalized type
+ * string might be the same even if they have different spellings. */
+const char *
+ofproto_normalize_type(const char *type)
+{
+ return type && type[0] ? type : "system";
+}
-static void ofproto_unixctl_init(void);
+/* Clears 'names' and enumerates the names of all known created ofprotos with
+ * the given 'type'. The caller must first initialize the sset. Returns 0 if
+ * successful, otherwise a positive errno value.
+ *
+ * Some kinds of datapaths might not be practically enumerable. This is not
+ * considered an error. */
+int
+ofproto_enumerate_names(const char *type, struct sset *names)
+{
+ const struct ofproto_class *class = ofproto_class_find__(type);
+ return class ? class->enumerate_names(type, names) : EAFNOSUPPORT;
+ }
int
-ofproto_create(const char *datapath, const char *datapath_type,
+ofproto_create(const char *datapath_name, const char *datapath_type,
struct ofproto **ofprotop)
{
- char local_name[IF_NAMESIZE];
- struct ofproto *p;
- struct dpif *dpif;
+ const struct ofproto_class *class;
+ struct classifier *table;
+ struct ofproto *ofproto;
+ int n_tables;
int error;
- int i;
*ofprotop = NULL;
+ ofproto_initialize();
ofproto_unixctl_init();
- /* Connect to datapath and start listening for messages. */
- error = dpif_create_and_open(datapath, datapath_type, &dpif);
- if (error) {
- VLOG_ERR("failed to open datapath %s: %s", datapath, strerror(error));
- return error;
+ datapath_type = ofproto_normalize_type(datapath_type);
+ class = ofproto_class_find__(datapath_type);
+ if (!class) {
+ VLOG_WARN("could not create datapath %s of unknown type %s",
+ datapath_name, datapath_type);
+ return EAFNOSUPPORT;
}
- error = dpif_recv_set_mask(dpif,
- ((1u << DPIF_UC_MISS) |
- (1u << DPIF_UC_ACTION) |
- (1u << DPIF_UC_SAMPLE)));
+
+ ofproto = class->alloc();
+ if (!ofproto) {
+ VLOG_ERR("failed to allocate datapath %s of type %s",
+ datapath_name, datapath_type);
+ return ENOMEM;
+ }
+
+ /* Initialize. */
+ memset(ofproto, 0, sizeof *ofproto);
+ ofproto->ofproto_class = class;
+ ofproto->name = xstrdup(datapath_name);
+ ofproto->type = xstrdup(datapath_type);
+ hmap_insert(&all_ofprotos, &ofproto->hmap_node,
+ hash_string(ofproto->name, 0));
+ ofproto->datapath_id = 0;
+ ofproto_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->frag_handling = OFPC_FRAG_NORMAL;
+ hmap_init(&ofproto->ports);
+ shash_init(&ofproto->port_by_name);
+ ofproto->tables = NULL;
+ ofproto->n_tables = 0;
+ ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name);
+ 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, &n_tables);
if (error) {
- VLOG_ERR("failed to listen on datapath %s: %s",
- datapath, strerror(error));
- dpif_close(dpif);
+ VLOG_ERR("failed to open datapath %s: %s",
+ datapath_name, strerror(error));
+ ofproto_destroy__(ofproto);
return error;
}
- dpif_flow_flush(dpif);
- dpif_recv_purge(dpif);
- error = dpif_port_get_name(dpif, ODPP_LOCAL,
- local_name, sizeof local_name);
- if (error) {
- VLOG_ERR("%s: cannot get name of datapath local port (%s)",
- datapath, strerror(error));
- return error;
+ 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) {
+ classifier_init(table);
}
- /* Initialize settings. */
- p = xzalloc(sizeof *p);
- p->name = xstrdup(dpif_name(dpif));
- hmap_insert(&all_ofprotos, &p->hmap_node, hash_string(p->name, 0));
- p->fallback_dpid = pick_fallback_dpid();
- p->datapath_id = p->fallback_dpid;
- p->mfr_desc = xstrdup(DEFAULT_MFR_DESC);
- p->hw_desc = xstrdup(DEFAULT_HW_DESC);
- p->sw_desc = xstrdup(DEFAULT_SW_DESC);
- p->serial_desc = xstrdup(DEFAULT_SERIAL_DESC);
- p->dp_desc = xstrdup(DEFAULT_DP_DESC);
-
- /* Initialize datapath. */
- p->dpif = dpif;
- p->netdev_monitor = netdev_monitor_create();
- hmap_init(&p->ports);
- shash_init(&p->port_by_name);
- p->max_ports = dpif_get_max_ports(dpif);
-
- /* Initialize bridging. */
- p->netflow = NULL;
- p->sflow = NULL;
- hmap_init(&p->bundles);
- p->ml = mac_learning_create();
- for (i = 0; i < MAX_MIRRORS; i++) {
- p->mirrors[i] = NULL;
- }
- p->has_bonded_bundles = false;
-
- /* Initialize flow table. */
- classifier_init(&p->cls);
- timer_set_duration(&p->next_expiration, 1000);
-
- /* Initialize facet table. */
- hmap_init(&p->facets);
- p->need_revalidate = false;
- tag_set_init(&p->revalidate_set);
-
- /* Pick final datapath ID. */
- p->datapath_id = pick_datapath_id(p);
- VLOG_INFO("using datapath ID %016"PRIx64, p->datapath_id);
-
- /* Initialize OpenFlow connections. */
- p->connmgr = connmgr_create(p, datapath, local_name);
-
- init_ports(p);
-
- *ofprotop = p;
+ ofproto->datapath_id = pick_datapath_id(ofproto);
+ VLOG_INFO("using datapath ID %016"PRIx64, ofproto->datapath_id);
+ init_ports(ofproto);
+
+ *ofprotop = ofproto;
return 0;
}
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,
ofproto_set_netflow(struct ofproto *ofproto,
const struct netflow_options *nf_options)
{
- if (nf_options && !sset_is_empty(&nf_options->collectors)) {
- if (!ofproto->netflow) {
- ofproto->netflow = netflow_create();
- }
- return netflow_set_options(ofproto->netflow, nf_options);
+ if (nf_options && sset_is_empty(&nf_options->collectors)) {
+ nf_options = NULL;
+ }
+
+ if (ofproto->ofproto_class->set_netflow) {
+ return ofproto->ofproto_class->set_netflow(ofproto, nf_options);
} else {
- netflow_destroy(ofproto->netflow);
- ofproto->netflow = NULL;
- return 0;
+ return nf_options ? EOPNOTSUPP : 0;
}
}
-void
+int
ofproto_set_sflow(struct ofproto *ofproto,
const struct ofproto_sflow_options *oso)
{
- struct ofproto_sflow *os = ofproto->sflow;
- if (oso) {
- if (!os) {
- struct ofport *ofport;
+ if (oso && sset_is_empty(&oso->targets)) {
+ oso = NULL;
+ }
- os = ofproto->sflow = ofproto_sflow_create(ofproto->dpif);
- HMAP_FOR_EACH (ofport, hmap_node, &ofproto->ports) {
- ofproto_sflow_add_port(os, ofport->odp_port,
- netdev_get_name(ofport->netdev));
- }
- }
- ofproto_sflow_set_options(os, oso);
+ if (ofproto->ofproto_class->set_sflow) {
+ return ofproto->ofproto_class->set_sflow(ofproto, oso);
} else {
- ofproto_sflow_destroy(os);
- ofproto->sflow = NULL;
+ return oso ? EOPNOTSUPP : 0;
+ }
+}
+\f
+/* 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. */
void
ofproto_port_clear_cfm(struct ofproto *ofproto, uint16_t ofp_port)
{
- struct ofport *ofport = get_port(ofproto, ofp_port_to_odp_port(ofp_port));
- if (ofport && ofport->cfm){
- cfm_destroy(ofport->cfm);
- ofport->cfm = NULL;
+ struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
+ if (ofport && ofproto->ofproto_class->set_cfm) {
+ ofproto->ofproto_class->set_cfm(ofport, NULL);
}
}
/* 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;
- ofport = get_port(ofproto, ofp_port_to_odp_port(ofp_port));
+ ofport = ofproto_get_port(ofproto, ofp_port);
if (!ofport) {
VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16,
ofproto->name, ofp_port);
return;
}
- if (!ofport->cfm) {
- ofport->cfm = cfm_create();
- }
-
- ofport->cfm->mpid = cfm->mpid;
- ofport->cfm->interval = cfm->interval;
- memcpy(ofport->cfm->maid, cfm->maid, CCM_MAID_LEN);
-
- cfm_update_remote_mps(ofport->cfm, remote_mps, n_remote_mps);
-
- if (!cfm_configure(ofport->cfm)) {
- VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed",
- ofproto->name, ofp_port,
- netdev_get_name(ofport->netdev));
- cfm_destroy(ofport->cfm);
- ofport->cfm = NULL;
+ /* 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, s)
+ : EOPNOTSUPP);
+ if (error) {
+ VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)",
+ ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
+ strerror(error));
}
}
-/* 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 = get_port(ofproto, ofp_port_to_odp_port(ofp_port));
- return ofport ? ofport->cfm : NULL;
-}
-
/* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
* Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
* 0 if LACP partner information is not current (generally indicating a
int
ofproto_port_is_lacp_current(struct ofproto *ofproto, uint16_t ofp_port)
{
- struct ofport *ofport = get_port(ofproto, ofp_port_to_odp_port(ofp_port));
- return (ofport && ofport->bundle && ofport->bundle->lacp
- ? lacp_slave_is_current(ofport->bundle->lacp, ofport)
+ struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
+ return (ofport && ofproto->ofproto_class->port_is_lacp_current
+ ? ofproto->ofproto_class->port_is_lacp_current(ofport)
: -1);
}
\f
/* Bundles. */
-/* Expires all MAC learning entries associated with 'port' and forces ofproto
- * to revalidate every flow. */
-static void
-ofproto_bundle_flush_macs(struct ofbundle *bundle)
+/* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
+ * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
+ * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
+ * configuration plus, if there is more than one slave, a bonding
+ * configuration.
+ *
+ * If 'aux' is already registered then this function updates its configuration
+ * to 's'. Otherwise, this function registers a new bundle.
+ *
+ * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
+ * port. */
+int
+ofproto_bundle_register(struct ofproto *ofproto, void *aux,
+ const struct ofproto_bundle_settings *s)
{
- struct ofproto *ofproto = bundle->ofproto;
- struct mac_learning *ml = ofproto->ml;
- struct mac_entry *mac, *next_mac;
-
- ofproto->need_revalidate = true;
- LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
- if (mac->port.p == bundle) {
- mac_learning_expire(ml, mac);
- }
- }
+ return (ofproto->ofproto_class->bundle_set
+ ? ofproto->ofproto_class->bundle_set(ofproto, aux, s)
+ : EOPNOTSUPP);
}
-static struct ofbundle *
-ofproto_bundle_lookup(const struct ofproto *ofproto, void *aux)
+/* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
+ * If no such bundle has been registered, this has no effect. */
+int
+ofproto_bundle_unregister(struct ofproto *ofproto, void *aux)
{
- struct ofbundle *bundle;
+ return ofproto_bundle_register(ofproto, aux, NULL);
+}
- HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0),
- &ofproto->bundles) {
- if (bundle->aux == aux) {
- return bundle;
- }
- }
- return NULL;
+\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. */
+int
+ofproto_mirror_register(struct ofproto *ofproto, void *aux,
+ const struct ofproto_mirror_settings *s)
+{
+ return (ofproto->ofproto_class->mirror_set
+ ? ofproto->ofproto_class->mirror_set(ofproto, aux, s)
+ : EOPNOTSUPP);
}
-/* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the
- * ones that are found to 'bundles'. */
-static void
-ofproto_bundle_lookup_multiple(struct ofproto *ofproto,
- void **auxes, size_t n_auxes,
- struct hmapx *bundles)
+/* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
+ * If no mirror has been registered, this has no effect. */
+int
+ofproto_mirror_unregister(struct ofproto *ofproto, void *aux)
{
- size_t i;
+ return ofproto_mirror_register(ofproto, aux, NULL);
+}
- hmapx_init(bundles);
- for (i = 0; i < n_auxes; i++) {
- struct ofbundle *bundle = ofproto_bundle_lookup(ofproto, auxes[i]);
- if (bundle) {
- hmapx_add(bundles, bundle);
- }
+/* 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);
}
-static void
-ofproto_bundle_del_port(struct ofport *port)
+/* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
+ * which all packets are flooded, instead of using MAC learning. If
+ * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
+ *
+ * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
+ * port. */
+int
+ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans)
{
- struct ofbundle *bundle = port->bundle;
-
- list_remove(&port->bundle_node);
- port->bundle = NULL;
+ return (ofproto->ofproto_class->set_flood_vlans
+ ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans)
+ : EOPNOTSUPP);
+}
- if (bundle->lacp) {
- lacp_slave_unregister(bundle->lacp, port);
- }
- if (bundle->bond) {
- bond_slave_unregister(bundle->bond, port);
- }
+/* 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(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
+bool
+ofproto_has_snoops(const struct ofproto *ofproto)
+{
+ return connmgr_has_snoops(ofproto->connmgr);
+}
- bundle->floodable = true;
- LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
- if (port->opp.config & htonl(OFPPC_NO_FLOOD)) {
- bundle->floodable = false;
- }
- }
+void
+ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops)
+{
+ connmgr_get_snoops(ofproto->connmgr, snoops);
}
-static bool
-ofproto_bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port,
- struct lacp_slave_settings *lacp)
+static void
+ofproto_flush__(struct ofproto *ofproto)
{
- struct ofport *port;
+ struct classifier *table;
+ struct ofopgroup *group;
- port = get_port(bundle->ofproto, ofp_port_to_odp_port(ofp_port));
- if (!port) {
- return false;
+ if (ofproto->ofproto_class->flush) {
+ ofproto->ofproto_class->flush(ofproto);
}
- if (port->bundle != bundle) {
- if (port->bundle) {
- ofproto_bundle_del_port(port);
- }
+ group = ofopgroup_create_unattached(ofproto);
+ OFPROTO_FOR_EACH_TABLE (table, ofproto) {
+ struct rule *rule, *next_rule;
+ struct cls_cursor cursor;
- port->bundle = bundle;
- list_push_back(&bundle->ports, &port->bundle_node);
- if (port->opp.config & htonl(OFPPC_NO_FLOOD)) {
- bundle->floodable = false;
+ cls_cursor_init(&cursor, table, NULL);
+ CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
+ if (!rule->pending) {
+ ofoperation_create(group, rule, OFOPERATION_DELETE);
+ classifier_remove(table, &rule->cr);
+ ofproto->ofproto_class->rule_destruct(rule);
+ }
}
}
-
- if (lacp) {
- lacp_slave_register(bundle->lacp, port, lacp);
- }
-
- return true;
+ ofopgroup_submit(group);
}
-void
-ofproto_bundle_register(struct ofproto *ofproto, void *aux,
- const struct ofproto_bundle_settings *s)
+static void
+ofproto_destroy__(struct ofproto *ofproto)
{
- bool need_flush = false;
- const unsigned long *trunks;
- struct ofbundle *bundle;
- struct ofport *port;
- size_t i;
- bool ok;
+ struct classifier *table;
- assert(s->n_slaves == 1 || s->bond != NULL);
- assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
+ assert(list_is_empty(&ofproto->pending));
+ assert(!ofproto->n_pending);
- bundle = ofproto_bundle_lookup(ofproto, aux);
- if (!bundle) {
- bundle = xmalloc(sizeof *bundle);
+ connmgr_destroy(ofproto->connmgr);
- bundle->ofproto = ofproto;
- hmap_insert(&ofproto->bundles, &bundle->hmap_node,
- hash_pointer(aux, 0));
- bundle->aux = aux;
- bundle->name = NULL;
-
- list_init(&bundle->ports);
- bundle->vlan = -1;
- bundle->trunks = NULL;
- bundle->bond = NULL;
- bundle->lacp = NULL;
-
- bundle->floodable = true;
-
- bundle->src_mirrors = 0;
- bundle->dst_mirrors = 0;
- bundle->mirror_out = 0;
- }
+ 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);
+ hmap_destroy(&ofproto->ports);
+ shash_destroy(&ofproto->port_by_name);
- if (!bundle->name || strcmp(s->name, bundle->name)) {
- free(bundle->name);
- bundle->name = xstrdup(s->name);
+ OFPROTO_FOR_EACH_TABLE (table, ofproto) {
+ assert(classifier_is_empty(table));
+ classifier_destroy(table);
}
+ free(ofproto->tables);
- /* LACP. */
- if (s->lacp) {
- if (!bundle->lacp) {
- bundle->lacp = lacp_create();
- }
- lacp_configure(bundle->lacp, s->lacp);
- } else {
- lacp_destroy(bundle->lacp);
- bundle->lacp = NULL;
- }
+ hmap_destroy(&ofproto->deletions);
- /* Update set of ports. */
- ok = true;
- for (i = 0; i < s->n_slaves; i++) {
- if (!ofproto_bundle_add_port(bundle, s->slaves[i],
- s->lacp ? &s->lacp_slaves[i] : NULL)) {
- ok = false;
- }
- }
- if (!ok || list_size(&bundle->ports) != s->n_slaves) {
- struct ofport *next_port;
+ free(ofproto->vlan_bitmap);
- LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
- for (i = 0; i < s->n_slaves; i++) {
- if (s->slaves[i] == odp_port_to_ofp_port(port->odp_port)) {
- goto found;
- }
- }
+ ofproto->ofproto_class->dealloc(ofproto);
+}
- ofproto_bundle_del_port(port);
- found: ;
- }
- }
- assert(list_size(&bundle->ports) <= s->n_slaves);
+void
+ofproto_destroy(struct ofproto *p)
+{
+ struct ofport *ofport, *next_ofport;
- if (list_is_empty(&bundle->ports)) {
- ofproto_bundle_unregister(ofproto, aux);
+ if (!p) {
return;
}
- /* Set VLAN tag. */
- if (s->vlan != bundle->vlan) {
- bundle->vlan = s->vlan;
- need_flush = true;
+ ofproto_flush__(p);
+ HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) {
+ ofport_destroy(ofport);
}
- /* Get trunked VLANs. */
- trunks = s->vlan == -1 ? NULL : s->trunks;
- if (!vlan_bitmap_equal(trunks, bundle->trunks)) {
- free(bundle->trunks);
- bundle->trunks = vlan_bitmap_clone(trunks);
- need_flush = true;
- }
-
- /* Bonding. */
- if (!list_is_short(&bundle->ports)) {
- bundle->ofproto->has_bonded_bundles = true;
- if (bundle->bond) {
- if (bond_reconfigure(bundle->bond, s->bond)) {
- ofproto->need_revalidate = true;
- }
- } else {
- bundle->bond = bond_create(s->bond);
- }
-
- LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
- uint16_t stable_id = (bundle->lacp
- ? lacp_slave_get_port_id(bundle->lacp, port)
- : port->odp_port);
- bond_slave_register(bundle->bond, port, stable_id, port->netdev);
- }
- } else {
- bond_destroy(bundle->bond);
- bundle->bond = NULL;
- }
-
- /* If we changed something that would affect MAC learning, un-learn
- * everything on this port and force flow revalidation. */
- if (need_flush) {
- ofproto_bundle_flush_macs(bundle);
- }
-}
-
-static void
-ofproto_bundle_destroy(struct ofbundle *bundle)
-{
- struct ofproto *ofproto;
- struct ofport *port, *next_port;
- int i;
-
- if (!bundle) {
- return;
- }
-
- ofproto = bundle->ofproto;
- for (i = 0; i < MAX_MIRRORS; i++) {
- struct ofmirror *m = ofproto->mirrors[i];
- if (m) {
- if (m->out == bundle) {
- ofproto_mirror_destroy(m);
- } else if (hmapx_find_and_delete(&m->srcs, bundle)
- || hmapx_find_and_delete(&m->dsts, bundle)) {
- ofproto->need_revalidate = true;
- }
- }
- }
-
- LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
- ofproto_bundle_del_port(port);
- }
-
- ofproto_bundle_flush_macs(bundle);
- hmap_remove(&ofproto->bundles, &bundle->hmap_node);
- free(bundle->name);
- free(bundle->trunks);
- bond_destroy(bundle->bond);
- lacp_destroy(bundle->lacp);
- free(bundle);
-}
-
-void
-ofproto_bundle_unregister(struct ofproto *ofproto, void *aux)
-{
- ofproto_bundle_destroy(ofproto_bundle_lookup(ofproto, aux));
-}
-
-static void
-send_pdu_cb(void *port_, const struct lacp_pdu *pdu)
-{
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
- struct ofport *port = port_;
- uint8_t ea[ETH_ADDR_LEN];
- int error;
-
- error = netdev_get_etheraddr(port->netdev, ea);
- if (!error) {
- struct lacp_pdu *packet_pdu;
- struct ofpbuf packet;
-
- ofpbuf_init(&packet, 0);
- packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP,
- sizeof *packet_pdu);
- *packet_pdu = *pdu;
- error = netdev_send(port->netdev, &packet);
- if (error) {
- VLOG_WARN_RL(&rl, "port %s: sending LACP PDU on iface %s failed "
- "(%s)", port->bundle->name,
- netdev_get_name(port->netdev), strerror(error));
- }
- ofpbuf_uninit(&packet);
- } else {
- VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
- "%s (%s)", port->bundle->name,
- netdev_get_name(port->netdev), strerror(error));
- }
-}
-
-static void
-ofproto_bundle_send_learning_packets(struct ofbundle *bundle)
-{
- struct ofproto *ofproto = bundle->ofproto;
- int error, n_packets, n_errors;
- struct mac_entry *e;
-
- error = n_packets = n_errors = 0;
- LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
- if (e->port.p != bundle) {
- int ret = bond_send_learning_packet(bundle->bond, e->mac, e->vlan);
- if (ret) {
- error = ret;
- n_errors++;
- }
- n_packets++;
- }
- }
-
- if (n_errors) {
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
- VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
- "packets, last error was: %s",
- bundle->name, n_errors, n_packets, strerror(error));
- } else {
- VLOG_DBG("bond %s: sent %d gratuitous learning packets",
- bundle->name, n_packets);
- }
-}
-
-static void
-ofproto_bundle_run(struct ofbundle *bundle)
-{
- if (bundle->lacp) {
- lacp_run(bundle->lacp, send_pdu_cb);
- }
- if (bundle->bond) {
- struct ofport *port;
-
- LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
- bool may_enable = lacp_slave_may_enable(bundle->lacp, port);
- bond_slave_set_lacp_may_enable(bundle->bond, port, may_enable);
- }
-
- bond_run(bundle->bond, &bundle->ofproto->revalidate_set,
- lacp_negotiated(bundle->lacp));
- if (bond_should_send_learning_packets(bundle->bond)) {
- ofproto_bundle_send_learning_packets(bundle);
- }
- }
-}
-
-static void
-ofproto_bundle_wait(struct ofbundle *bundle)
-{
- if (bundle->lacp) {
- lacp_wait(bundle->lacp);
- }
- if (bundle->bond) {
- bond_wait(bundle->bond);
- }
-}
-\f
-static int
-ofproto_mirror_scan(struct ofproto *ofproto)
-{
- int idx;
-
- for (idx = 0; idx < MAX_MIRRORS; idx++) {
- if (!ofproto->mirrors[idx]) {
- return idx;
- }
- }
- return -1;
-}
-
-static struct ofmirror *
-ofproto_mirror_lookup(struct ofproto *ofproto, void *aux)
-{
- int i;
-
- for (i = 0; i < MAX_MIRRORS; i++) {
- struct ofmirror *mirror = ofproto->mirrors[i];
- if (mirror && mirror->aux == aux) {
- return mirror;
- }
- }
-
- return NULL;
-}
-
-void
-ofproto_mirror_register(struct ofproto *ofproto, void *aux,
- const struct ofproto_mirror_settings *s)
-{
- mirror_mask_t mirror_bit;
- struct ofbundle *bundle;
- struct ofmirror *mirror;
- struct ofbundle *out;
- struct hmapx srcs; /* Contains "struct ofbundle *"s. */
- struct hmapx dsts; /* Contains "struct ofbundle *"s. */
- int out_vlan;
-
- mirror = ofproto_mirror_lookup(ofproto, aux);
- if (!mirror) {
- int idx;
-
- idx = ofproto_mirror_scan(ofproto);
- if (idx < 0) {
- VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
- "cannot create %s",
- ofproto->name, MAX_MIRRORS, s->name);
- return;
- }
-
- mirror = ofproto->mirrors[idx] = xzalloc(sizeof *mirror);
- mirror->ofproto = ofproto;
- mirror->idx = idx;
- mirror->out_vlan = -1;
- mirror->name = NULL;
- }
-
- if (!mirror->name || strcmp(s->name, mirror->name)) {
- free(mirror->name);
- mirror->name = xstrdup(s->name);
- }
-
- /* Get the new configuration. */
- if (s->out_bundle) {
- out = ofproto_bundle_lookup(ofproto, s->out_bundle);
- if (!out) {
- ofproto_mirror_destroy(mirror);
- return;
- }
- out_vlan = -1;
- } else {
- out = NULL;
- out_vlan = s->out_vlan;
- }
- ofproto_bundle_lookup_multiple(ofproto, s->srcs, s->n_srcs, &srcs);
- ofproto_bundle_lookup_multiple(ofproto, s->dsts, s->n_dsts, &dsts);
-
- /* If the configuration has not changed, do nothing. */
- if (hmapx_equals(&srcs, &mirror->srcs)
- && hmapx_equals(&dsts, &mirror->dsts)
- && vlan_bitmap_equal(mirror->vlans, s->src_vlans)
- && mirror->out == out
- && mirror->out_vlan == out_vlan)
- {
- hmapx_destroy(&srcs);
- hmapx_destroy(&dsts);
- return;
- }
-
- hmapx_swap(&srcs, &mirror->srcs);
- hmapx_destroy(&srcs);
-
- hmapx_swap(&dsts, &mirror->dsts);
- hmapx_destroy(&dsts);
-
- free(mirror->vlans);
- mirror->vlans = vlan_bitmap_clone(s->src_vlans);
-
- mirror->out = out;
- mirror->out_vlan = out_vlan;
-
- /* Update bundles. */
- mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
- HMAP_FOR_EACH (bundle, hmap_node, &mirror->ofproto->bundles) {
- if (hmapx_contains(&mirror->srcs, bundle)) {
- bundle->src_mirrors |= mirror_bit;
- } else {
- bundle->src_mirrors &= ~mirror_bit;
- }
-
- if (hmapx_contains(&mirror->dsts, bundle)) {
- bundle->dst_mirrors |= mirror_bit;
- } else {
- bundle->dst_mirrors &= ~mirror_bit;
- }
-
- if (mirror->out == bundle) {
- bundle->mirror_out |= mirror_bit;
- } else {
- bundle->mirror_out &= ~mirror_bit;
- }
- }
-
- ofproto->need_revalidate = true;
- mac_learning_flush(ofproto->ml);
-}
-
-static void
-ofproto_mirror_destroy(struct ofmirror *mirror)
-{
- mirror_mask_t mirror_bit;
- struct ofbundle *bundle;
- struct ofproto *ofproto;
-
- if (!mirror) {
- return;
- }
-
- ofproto = mirror->ofproto;
- ofproto->need_revalidate = true;
- mac_learning_flush(ofproto->ml);
-
- mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
- HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
- bundle->src_mirrors &= ~mirror_bit;
- bundle->dst_mirrors &= ~mirror_bit;
- bundle->mirror_out &= ~mirror_bit;
- }
-
- hmapx_destroy(&mirror->srcs);
- hmapx_destroy(&mirror->dsts);
- free(mirror->vlans);
-
- ofproto->mirrors[mirror->idx] = NULL;
- free(mirror->name);
- free(mirror);
-}
-
-void
-ofproto_mirror_unregister(struct ofproto *ofproto, void *aux)
-{
- ofproto_mirror_destroy(ofproto_mirror_lookup(ofproto, aux));
-}
-
-void
-ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans)
-{
- if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) {
- ofproto->need_revalidate = true;
- mac_learning_flush(ofproto->ml);
- }
-}
-
-bool
-ofproto_is_mirror_output_bundle(struct ofproto *ofproto, void *aux)
-{
- struct ofbundle *bundle = ofproto_bundle_lookup(ofproto, aux);
- return bundle && bundle->mirror_out != 0;
-}
-\f
-bool
-ofproto_has_snoops(const struct ofproto *ofproto)
-{
- return connmgr_has_snoops(ofproto->connmgr);
-}
-
-void
-ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops)
-{
- connmgr_get_snoops(ofproto->connmgr, snoops);
+ p->ofproto_class->destruct(p);
+ ofproto_destroy__(p);
}
-void
-ofproto_destroy(struct ofproto *p)
+/* Destroys the datapath with the respective 'name' and 'type'. With the Linux
+ * kernel datapath, for example, this destroys the datapath in the kernel, and
+ * with the netdev-based datapath, it tears down the data structures that
+ * represent the datapath.
+ *
+ * The datapath should not be currently open as an ofproto. */
+int
+ofproto_delete(const char *name, const char *type)
{
- struct ofport *ofport, *next_ofport;
- int i;
-
- if (!p) {
- return;
- }
-
- hmap_remove(&all_ofprotos, &p->hmap_node);
-
- for (i = 0; i < MAX_MIRRORS; i++) {
- ofproto_mirror_destroy(p->mirrors[i]);
- }
- ofproto_flush_flows__(p);
- connmgr_destroy(p->connmgr);
- classifier_destroy(&p->cls);
- hmap_destroy(&p->facets);
-
- dpif_close(p->dpif);
-
- netdev_monitor_destroy(p->netdev_monitor);
- HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) {
- hmap_remove(&p->ports, &ofport->hmap_node);
- ofport_free(ofport);
- }
- shash_destroy(&p->port_by_name);
-
- netflow_destroy(p->netflow);
- ofproto_sflow_destroy(p->sflow);
-
- free(p->mfr_desc);
- free(p->hw_desc);
- free(p->sw_desc);
- free(p->serial_desc);
- free(p->dp_desc);
-
- hmap_destroy(&p->ports);
-
- free(p->name);
- free(p);
+ const struct ofproto_class *class = ofproto_class_find__(type);
+ return (!class ? EAFNOSUPPORT
+ : !class->del ? EACCES
+ : class->del(type, name));
}
static void
int
ofproto_run(struct ofproto *p)
{
- struct ofbundle *bundle;
+ struct sset changed_netdevs;
+ const char *changed_netdev;
struct ofport *ofport;
- char *devname;
int error;
- int i;
- dpif_run(p->dpif);
+ error = p->ofproto_class->run(p);
+ if (error && error != EAGAIN) {
+ VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, strerror(error));
+ }
- for (i = 0; i < 50; i++) {
- struct dpif_upcall packet;
+ if (p->ofproto_class->port_poll) {
+ char *devname;
- error = dpif_recv(p->dpif, &packet);
- if (error) {
- if (error == ENODEV) {
- /* Someone destroyed the datapath behind our back. The caller
- * better destroy us and give up, because we're just going to
- * spin from here on out. */
- static struct vlog_rate_limit rl2 = VLOG_RATE_LIMIT_INIT(1, 5);
- VLOG_ERR_RL(&rl2, "%s: datapath was destroyed externally",
- p->name);
- return ENODEV;
- }
- break;
+ while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) {
+ process_port_change(p, error, devname);
}
-
- handle_upcall(p, &packet);
- }
-
- while ((error = dpif_port_poll(p->dpif, &devname)) != EAGAIN) {
- process_port_change(p, error, devname);
- }
- while ((error = netdev_monitor_poll(p->netdev_monitor,
- &devname)) != EAGAIN) {
- process_port_change(p, error, devname);
}
+ /* Update OpenFlow port status for any port whose netdev has changed.
+ *
+ * Refreshing a given 'ofport' can cause an arbitrary ofport to be
+ * destroyed, so it's not safe to update ports directly from the
+ * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we
+ * need this two-phase approach. */
+ sset_init(&changed_netdevs);
HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
- ofport_run(ofport);
+ unsigned int change_seq = netdev_change_seq(ofport->netdev);
+ if (ofport->change_seq != change_seq) {
+ ofport->change_seq = change_seq;
+ sset_add(&changed_netdevs, netdev_get_name(ofport->netdev));
+ }
}
-
- HMAP_FOR_EACH (bundle, hmap_node, &p->bundles) {
- ofproto_bundle_run(bundle);
+ SSET_FOR_EACH (changed_netdev, &changed_netdevs) {
+ update_port(p, changed_netdev);
}
+ sset_destroy(&changed_netdevs);
- connmgr_run(p->connmgr, handle_openflow);
- if (timer_expired(&p->next_expiration)) {
- int delay = ofproto_expire(p);
- timer_set_duration(&p->next_expiration, delay);
- COVERAGE_INC(ofproto_expiration);
- }
+ switch (p->state) {
+ case S_OPENFLOW:
+ connmgr_run(p->connmgr, handle_openflow);
+ break;
- if (p->netflow) {
- netflow_run(p->netflow);
- }
- if (p->sflow) {
- ofproto_sflow_run(p->sflow);
+ 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();
}
- /* Now revalidate if there's anything to do. */
- if (p->need_revalidate || !tag_set_is_empty(&p->revalidate_set)) {
- struct tag_set revalidate_set = p->revalidate_set;
- bool revalidate_all = p->need_revalidate;
- struct facet *facet, *next;
+ return error;
+}
- /* Clear the revalidation flags. */
- tag_set_init(&p->revalidate_set);
- p->need_revalidate = false;
+/* 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;
- HMAP_FOR_EACH_SAFE (facet, next, hmap_node, &p->facets) {
- if (revalidate_all
- || tag_set_intersects(&revalidate_set, facet->tags)) {
- facet_revalidate(p, facet);
- }
- }
+ 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 0;
+ return error;
}
void
ofproto_wait(struct ofproto *p)
{
- struct ofbundle *bundle;
struct ofport *ofport;
- dpif_wait(p->dpif);
- HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
- ofport_wait(ofport);
- }
- HMAP_FOR_EACH (bundle, hmap_node, &p->bundles) {
- ofproto_bundle_wait(bundle);
+ p->ofproto_class->wait(p);
+ if (p->ofproto_class->port_poll_wait) {
+ p->ofproto_class->port_poll_wait(p);
}
- dpif_recv_wait(p->dpif);
- dpif_port_poll_wait(p->dpif);
- netdev_monitor_poll_wait(p->netdev_monitor);
- if (p->sflow) {
- ofproto_sflow_wait(p->sflow);
- }
- if (!tag_set_is_empty(&p->revalidate_set)) {
- poll_immediate_wake();
+
+ HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
+ if (ofport->change_seq != netdev_change_seq(ofport->netdev)) {
+ poll_immediate_wake();
+ }
}
- if (p->need_revalidate) {
- /* Shouldn't happen, but if it does just go around again. */
- VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
- poll_immediate_wake();
- } else {
- timer_wait(&p->next_expiration);
+
+ switch (p->state) {
+ case S_OPENFLOW:
+ connmgr_wait(p->connmgr, true);
+ break;
+
+ case S_FLUSH:
+ connmgr_wait(p->connmgr, false);
+ if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) {
+ poll_immediate_wake();
+ }
+ break;
}
- connmgr_wait(p->connmgr);
}
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'. */
free(ofproto_port->type);
}
-/* Converts a dpif_port into an ofproto_port.
- *
- * This only makes a shallow copy, so make sure that the dpif_port doesn't get
- * freed while the ofproto_port is still in use. You can choose to free the
- * ofproto_port instead of the dpif_port. */
-static void
-ofproto_port_from_dpif_port(struct ofproto_port *ofproto_port,
- struct dpif_port *dpif_port)
-{
- ofproto_port->name = dpif_port->name;
- ofproto_port->type = dpif_port->type;
- ofproto_port->ofp_port = odp_port_to_ofp_port(dpif_port->port_no);
-}
-
/* Initializes 'dump' to begin dumping the ports in an ofproto.
*
* This function provides no status indication. An error status for the entire
ofproto_port_dump_start(struct ofproto_port_dump *dump,
const struct ofproto *ofproto)
{
- struct dpif_port_dump *dpif_dump;
-
- dump->state = dpif_dump = xmalloc(sizeof *dpif_dump);
- dpif_port_dump_start(dpif_dump, ofproto->dpif);
+ dump->ofproto = ofproto;
+ dump->error = ofproto->ofproto_class->port_dump_start(ofproto,
+ &dump->state);
}
/* Attempts to retrieve another port from 'dump', which must have been created
ofproto_port_dump_next(struct ofproto_port_dump *dump,
struct ofproto_port *port)
{
- struct dpif_port_dump *dpif_dump = dump->state;
- struct dpif_port dpif_port;
- bool ok;
+ const struct ofproto *ofproto = dump->ofproto;
+
+ if (dump->error) {
+ return false;
+ }
- ok = dpif_port_dump_next(dpif_dump, &dpif_port);
- if (ok) {
- ofproto_port_from_dpif_port(port, &dpif_port);
+ dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state,
+ port);
+ if (dump->error) {
+ ofproto->ofproto_class->port_dump_done(ofproto, dump->state);
+ return false;
}
- return ok;
+ return true;
}
/* Completes port table dump operation 'dump', which must have been created
int
ofproto_port_dump_done(struct ofproto_port_dump *dump)
{
- struct dpif_port_dump *dpif_dump = dump->state;
- int error = dpif_port_dump_done(dpif_dump);
- free(dpif_dump);
- return error;
+ const struct ofproto *ofproto = dump->ofproto;
+ if (!dump->error) {
+ dump->error = ofproto->ofproto_class->port_dump_done(ofproto,
+ dump->state);
+ }
+ return dump->error == EOF ? 0 : dump->error;
}
/* Attempts to add 'netdev' as a port on 'ofproto'. If successful, returns 0
ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev,
uint16_t *ofp_portp)
{
- uint16_t odp_port;
+ uint16_t ofp_port;
int error;
- error = dpif_port_add(ofproto->dpif, netdev, &odp_port);
+ error = ofproto->ofproto_class->port_add(ofproto, netdev, &ofp_port);
if (!error) {
update_port(ofproto, netdev_get_name(netdev));
}
if (ofp_portp) {
- *ofp_portp = error ? OFPP_NONE : odp_port_to_ofp_port(odp_port);
+ *ofp_portp = error ? OFPP_NONE : ofp_port;
}
return error;
}
* initializes '*port' appropriately; on failure, returns a positive errno
* value.
*
- * The caller owns the data in 'port' and must free it with
+ * The caller owns the data in 'ofproto_port' and must free it with
* ofproto_port_destroy() when it is no longer needed. */
int
ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname,
struct ofproto_port *port)
{
- struct dpif_port dpif_port;
int error;
- error = dpif_port_query_by_name(ofproto->dpif, devname, &dpif_port);
- if (!error) {
- ofproto_port_from_dpif_port(port, &dpif_port);
+ error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port);
+ if (error) {
+ memset(port, 0, sizeof *port);
}
return error;
}
int
ofproto_port_del(struct ofproto *ofproto, uint16_t ofp_port)
{
- uint32_t odp_port = ofp_port_to_odp_port(ofp_port);
- struct ofport *ofport = get_port(ofproto, odp_port);
+ struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>";
int error;
- error = dpif_port_del(ofproto->dpif, odp_port);
+ error = ofproto->ofproto_class->port_del(ofproto, ofp_port);
if (!error && ofport) {
/* 'name' is the netdev's name and update_port() is going to close the
* netdev. Just in case update_port() refers to 'name' after it
return error;
}
-/* Sends 'packet' out of port 'port_no' within 'p'. If 'vlan_tci' is zero the
- * packet will not have any 802.1Q hader; if it is nonzero, then the packet
- * will be sent with the VLAN TCI specified by 'vlan_tci & ~VLAN_CFI'.
- *
- * Returns 0 if successful, otherwise a positive errno value. */
-static int
-ofproto_send_packet(struct ofproto *ofproto,
- uint32_t port_no, uint16_t vlan_tci,
- const struct ofpbuf *packet)
-{
- struct ofpbuf odp_actions;
- int error;
-
- ofpbuf_init(&odp_actions, 32);
- if (vlan_tci != 0) {
- nl_msg_put_u32(&odp_actions, ODP_ACTION_ATTR_SET_DL_TCI,
- ntohs(vlan_tci & ~VLAN_CFI));
- }
- nl_msg_put_u32(&odp_actions, ODP_ACTION_ATTR_OUTPUT, port_no);
- error = dpif_execute(ofproto->dpif, odp_actions.data, odp_actions.size,
- packet);
- ofpbuf_uninit(&odp_actions);
-
- if (error) {
- VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)",
- ofproto->name, port_no, strerror(error));
- }
- 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 = rule_create(cls_rule, actions, n_actions, 0, 0, 0, false);
- rule_insert(p, 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_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) {
- rule_remove(ofproto, 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
+ * OpenFlow error code as encoded by ofp_mkerr() 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 facet *facet, *next_facet;
- struct rule *rule, *next_rule;
- struct cls_cursor cursor;
+ return handle_flow_mod__(ofproto, NULL, fm, NULL);
+}
- COVERAGE_INC(ofproto_flush);
-
- HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) {
- /* Mark the facet as not installed so that facet_remove() doesn't
- * bother trying to uninstall it. There is no point in uninstalling it
- * individually since we are about to blow away all the facets with
- * dpif_flow_flush(). */
- facet->installed = false;
- facet->dp_packet_count = 0;
- facet->dp_byte_count = 0;
- facet_remove(ofproto, facet);
- }
+/* 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;
- cls_cursor_init(&cursor, &ofproto->cls, NULL);
- CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
- rule_remove(ofproto, rule);
+ rule = rule_from_cls_rule(classifier_find_rule_exactly(
+ &ofproto->tables[0], 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);
+ classifier_remove(&ofproto->tables[rule->table_id], &rule->cr);
+ rule->ofproto->ofproto_class->rule_destruct(rule);
+ ofopgroup_submit(group);
+ return true;
}
- dpif_flow_flush(ofproto->dpif);
}
+/* 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
reinit_ports(struct ofproto *p)
{
- struct dpif_port_dump dump;
+ struct ofproto_port_dump dump;
struct sset devnames;
struct ofport *ofport;
- struct dpif_port dpif_port;
+ struct ofproto_port ofproto_port;
const char *devname;
COVERAGE_INC(ofproto_reinit_ports);
HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
sset_add(&devnames, netdev_get_name(ofport->netdev));
}
- DPIF_PORT_FOR_EACH (&dpif_port, &dump, p->dpif) {
- sset_add(&devnames, dpif_port.name);
+ OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
+ sset_add(&devnames, ofproto_port.name);
}
SSET_FOR_EACH (devname, &devnames) {
sset_destroy(&devnames);
}
-/* Opens and returns a netdev for 'dpif_port', or a null pointer if the netdev
- * cannot be opened. On success, also fills in 'opp'. */
+/* Opens and returns a netdev for 'ofproto_port', or a null pointer if the
+ * netdev cannot be opened. On success, also fills in 'opp'. */
static struct netdev *
-ofport_open(const struct dpif_port *dpif_port, struct ofp_phy_port *opp)
+ofport_open(const struct ofproto_port *ofproto_port, struct ofp_phy_port *opp)
{
uint32_t curr, advertised, supported, peer;
- struct netdev_options netdev_options;
enum netdev_flags flags;
struct netdev *netdev;
int error;
- memset(&netdev_options, 0, sizeof netdev_options);
- netdev_options.name = dpif_port->name;
- netdev_options.type = dpif_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)",
- dpif_port->name, dpif_port->port_no,
- dpif_port->name, strerror(error));
+ ofproto_port->name, ofproto_port->ofp_port,
+ ofproto_port->name, strerror(error));
return NULL;
}
netdev_get_flags(netdev, &flags);
netdev_get_features(netdev, &curr, &advertised, &supported, &peer);
- opp->port_no = htons(odp_port_to_ofp_port(dpif_port->port_no));
+ opp->port_no = htons(ofproto_port->ofp_port);
netdev_get_etheraddr(netdev, opp->hw_addr);
- ovs_strzcpy(opp->name, dpif_port->name, sizeof opp->name);
+ ovs_strzcpy(opp->name, ofproto_port->name, sizeof opp->name);
opp->config = flags & NETDEV_UP ? 0 : htonl(OFPPC_PORT_DOWN);
opp->state = netdev_get_carrier(netdev) ? 0 : htonl(OFPPS_LINK_DOWN);
opp->curr = htonl(curr);
return netdev;
}
-static bool
-ofport_conflicts(const struct ofproto *p, const struct dpif_port *dpif_port)
-{
- if (get_port(p, dpif_port->port_no)) {
- VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath",
- dpif_port->port_no);
- return true;
- } else if (shash_find(&p->port_by_name, dpif_port->name)) {
- VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath",
- dpif_port->name);
- return true;
- } else {
- return false;
- }
-}
-
/* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
* port number, and 'config' bits other than OFPPC_PORT_DOWN are
* disregarded. */
{
const char *netdev_name = netdev_get_name(netdev);
struct ofport *ofport;
-
- connmgr_send_port_status(p->connmgr, opp, OFPPR_ADD);
+ int dev_mtu;
+ int error;
/* Create ofport. */
- ofport = xmalloc(sizeof *ofport);
+ ofport = p->ofproto_class->port_alloc();
+ if (!ofport) {
+ error = ENOMEM;
+ goto error;
+ }
ofport->ofproto = p;
ofport->netdev = netdev;
+ ofport->change_seq = netdev_change_seq(netdev);
ofport->opp = *opp;
- ofport->odp_port = ofp_port_to_odp_port(ntohs(opp->port_no));
- ofport->bundle = NULL;
- ofport->cfm = NULL;
- ofport->tag = tag_create_random();
+ ofport->ofp_port = ntohs(opp->port_no);
/* Add port to 'p'. */
- netdev_monitor_add(p->netdev_monitor, ofport->netdev);
- hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->odp_port, 0));
+ hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->ofp_port, 0));
shash_add(&p->port_by_name, netdev_name, ofport);
- if (p->sflow) {
- ofproto_sflow_add_port(p->sflow, ofport->odp_port, netdev_name);
+
+ if (!netdev_get_mtu(netdev, &dev_mtu)) {
+ ofport->mtu = dev_mtu;
+ set_internal_devs_mtu(p);
+ } else {
+ ofport->mtu = 0;
+ }
+
+ /* Let the ofproto_class initialize its private data. */
+ error = p->ofproto_class->port_construct(ofport);
+ if (error) {
+ goto error;
+ }
+ connmgr_send_port_status(p->connmgr, opp, OFPPR_ADD);
+ return;
+
+error:
+ VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)",
+ p->name, netdev_name, strerror(error));
+ if (ofport) {
+ ofport_destroy__(ofport);
+ } else {
+ netdev_close(netdev);
}
}
{
connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->opp,
OFPPR_DELETE);
- ofport_free(ofport);
+ ofport_destroy(ofport);
}
/* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
}
}
-/* 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. */
static void
-ofport_modified(struct ofport *port,
- struct netdev *netdev, struct ofp_phy_port *opp)
+ofport_modified(struct ofport *port, struct ofp_phy_port *opp)
{
- struct ofproto *ofproto = port->ofproto;
-
- if (port->bundle && port->bundle->bond) {
- bond_slave_set_netdev(port->bundle->bond, port, netdev);
- }
-
memcpy(port->opp.hw_addr, opp->hw_addr, ETH_ADDR_LEN);
port->opp.config = ((port->opp.config & ~htonl(OFPPC_PORT_DOWN))
| (opp->config & htonl(OFPPC_PORT_DOWN)));
port->opp.supported = opp->supported;
port->opp.peer = opp->peer;
- netdev_monitor_remove(ofproto->netdev_monitor, port->netdev);
- netdev_monitor_add(ofproto->netdev_monitor, netdev);
-
- netdev_close(port->netdev);
- port->netdev = netdev;
-
- connmgr_send_port_status(ofproto->connmgr, &port->opp, OFPPR_MODIFY);
+ connmgr_send_port_status(port->ofproto->connmgr, &port->opp, OFPPR_MODIFY);
}
-static void
-ofport_run(struct ofport *ofport)
+/* Update OpenFlow 'state' in 'port' and notify controller. */
+void
+ofproto_port_set_state(struct ofport *port, ovs_be32 state)
{
- if (ofport->cfm) {
- cfm_run(ofport->cfm);
-
- if (cfm_should_send_ccm(ofport->cfm)) {
- struct ofpbuf packet;
- struct ccm *ccm;
-
- ofpbuf_init(&packet, 0);
- ccm = eth_compose(&packet, eth_addr_ccm, ofport->opp.hw_addr,
- ETH_TYPE_CFM, sizeof *ccm);
- cfm_compose_ccm(ofport->cfm, ccm);
- ofproto_send_packet(ofport->ofproto, ofport->odp_port, 0, &packet);
- ofpbuf_uninit(&packet);
- }
+ if (port->opp.state != state) {
+ port->opp.state = state;
+ connmgr_send_port_status(port->ofproto->connmgr, &port->opp,
+ OFPPR_MODIFY);
}
}
-static void
-ofport_wait(struct ofport *ofport)
+void
+ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port)
{
- if (ofport->cfm) {
- cfm_wait(ofport->cfm);
+ 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);
+ }
+ if (port->ofproto->ofproto_class->bundle_remove) {
+ port->ofproto->ofproto_class->bundle_remove(port);
+ }
}
}
static void
-ofport_unregister(struct ofport *port)
+ofport_destroy__(struct ofport *port)
{
- struct ofbundle *bundle = port->bundle;
-
- if (bundle) {
- ofproto_bundle_del_port(port);
- if (list_is_empty(&bundle->ports)) {
- ofproto_bundle_destroy(bundle);
- } else if (list_is_short(&bundle->ports)) {
- bond_destroy(bundle->bond);
- bundle->bond = NULL;
- }
- }
+ struct ofproto *ofproto = port->ofproto;
+ const char *name = netdev_get_name(port->netdev);
- cfm_destroy(port->cfm);
- port->cfm = NULL;
-}
+ hmap_remove(&ofproto->ports, &port->hmap_node);
+ shash_delete(&ofproto->port_by_name,
+ shash_find(&ofproto->port_by_name, name));
-void
-ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port)
-{
- struct ofport *port = get_port(ofproto, ofp_port_to_odp_port(ofp_port));
- if (port) {
- ofport_unregister(port);
- }
+ netdev_close(port->netdev);
+ ofproto->ofproto_class->port_dealloc(port);
}
static void
-ofport_free(struct ofport *port)
+ofport_destroy(struct ofport *port)
{
if (port) {
- struct ofproto *ofproto = port->ofproto;
- const char *name = netdev_get_name(port->netdev);
-
- ofport_unregister(port);
-
- 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));
- if (ofproto->sflow) {
- ofproto_sflow_del_port(ofproto->sflow, port->odp_port);
- }
-
- netdev_close(port->netdev);
- free(port);
- }
+ port->ofproto->ofproto_class->port_destruct(port);
+ ofport_destroy__(port);
+ }
}
-static struct ofport *
-get_port(const struct ofproto *ofproto, uint16_t odp_port)
+struct ofport *
+ofproto_get_port(const struct ofproto *ofproto, uint16_t ofp_port)
{
struct ofport *port;
HMAP_FOR_EACH_IN_BUCKET (port, hmap_node,
- hash_int(odp_port, 0), &ofproto->ports) {
- if (port->odp_port == odp_port) {
+ hash_int(ofp_port, 0), &ofproto->ports) {
+ if (port->ofp_port == ofp_port) {
return port;
}
}
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)
{
- struct dpif_port dpif_port;
+ struct ofproto_port ofproto_port;
struct ofp_phy_port opp;
struct netdev *netdev;
struct ofport *port;
COVERAGE_INC(ofproto_update_port);
/* Fetch 'name''s location and properties from the datapath. */
- netdev = (!dpif_port_query_by_name(ofproto->dpif, name, &dpif_port)
- ? ofport_open(&dpif_port, &opp)
+ netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port)
+ ? ofport_open(&ofproto_port, &opp)
: NULL);
if (netdev) {
- port = get_port(ofproto, dpif_port.port_no);
+ port = ofproto_get_port(ofproto, ofproto_port.ofp_port);
if (port && !strcmp(netdev_get_name(port->netdev), name)) {
+ struct netdev *old_netdev = port->netdev;
+ int dev_mtu;
+
/* 'name' hasn't changed location. Any properties changed? */
if (!ofport_equal(&port->opp, &opp)) {
- ofport_modified(port, netdev, &opp);
- } else {
- netdev_close(netdev);
+ ofport_modified(port, &opp);
}
+
+ /* 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;
+ }
+
+ /* 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'
if (port) {
ofport_remove(port);
}
- ofport_remove_with_name(ofproto, name);
- ofport_install(ofproto, netdev, &opp);
- }
- } else {
- /* Any port named 'name' is gone now. */
- ofport_remove_with_name(ofproto, name);
- }
- dpif_port_destroy(&dpif_port);
-}
-
-static int
-init_ports(struct ofproto *p)
-{
- struct dpif_port_dump dump;
- struct dpif_port dpif_port;
-
- DPIF_PORT_FOR_EACH (&dpif_port, &dump, p->dpif) {
- if (!ofport_conflicts(p, &dpif_port)) {
- struct ofp_phy_port opp;
- struct netdev *netdev;
-
- netdev = ofport_open(&dpif_port, &opp);
- if (netdev) {
- ofport_install(p, netdev, &opp);
- }
- }
- }
-
- return 0;
-}
-\f
-/* Returns true if 'rule' should be hidden from the controller.
- *
- * Rules with priority higher than UINT16_MAX are set up by ofproto itself
- * (e.g. by in-band control) and are intentionally hidden from the
- * controller. */
-static bool
-rule_is_hidden(const struct rule *rule)
-{
- return rule->cr.priority > UINT16_MAX;
-}
-
-/* Creates and returns a new rule initialized as specified.
- *
- * The caller is responsible for inserting the rule into the classifier (with
- * rule_insert()). */
-static struct rule *
-rule_create(const struct cls_rule *cls_rule,
- 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 *rule = xzalloc(sizeof *rule);
- rule->cr = *cls_rule;
- rule->idle_timeout = idle_timeout;
- rule->hard_timeout = hard_timeout;
- rule->flow_cookie = flow_cookie;
- rule->used = rule->created = time_msec();
- rule->send_flow_removed = send_flow_removed;
- list_init(&rule->facets);
- if (n_actions > 0) {
- rule->n_actions = n_actions;
- rule->actions = xmemdup(actions, n_actions * sizeof *actions);
- }
-
- return rule;
-}
-
-static struct rule *
-rule_from_cls_rule(const struct cls_rule *cls_rule)
-{
- return cls_rule ? CONTAINER_OF(cls_rule, struct rule, cr) : NULL;
-}
-
-static void
-rule_free(struct rule *rule)
-{
- free(rule->actions);
- free(rule);
-}
-
-/* Destroys 'rule' and iterates through all of its facets and revalidates them,
- * destroying any that no longer has a rule (which is probably all of them).
- *
- * The caller must have already removed 'rule' from the classifier. */
-static void
-rule_destroy(struct ofproto *ofproto, struct rule *rule)
-{
- struct facet *facet, *next_facet;
- LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
- facet_revalidate(ofproto, facet);
- }
- rule_free(rule);
-}
-
-/* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
- * 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)
-{
- const union ofp_action *oa;
- struct actions_iterator i;
-
- if (out_port == htons(OFPP_NONE)) {
- return true;
- }
- for (oa = actions_first(&i, rule->actions, rule->n_actions); oa;
- oa = actions_next(&i)) {
- if (action_outputs_to_port(oa, out_port)) {
- return true;
- }
- }
- return false;
-}
-
-/* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
- * 'packet', which arrived on 'in_port'.
- *
- * Takes ownership of 'packet'. */
-static bool
-execute_odp_actions(struct ofproto *ofproto, const struct flow *flow,
- const struct nlattr *odp_actions, size_t actions_len,
- struct ofpbuf *packet)
-{
- if (actions_len == NLA_ALIGN(NLA_HDRLEN + sizeof(uint64_t))
- && odp_actions->nla_type == ODP_ACTION_ATTR_CONTROLLER) {
- /* As an optimization, avoid a round-trip from userspace to kernel to
- * userspace. This also avoids possibly filling up kernel packet
- * buffers along the way. */
- struct dpif_upcall upcall;
-
- upcall.type = DPIF_UC_ACTION;
- upcall.packet = packet;
- upcall.key = NULL;
- upcall.key_len = 0;
- upcall.userdata = nl_attr_get_u64(odp_actions);
- upcall.sample_pool = 0;
- upcall.actions = NULL;
- upcall.actions_len = 0;
-
- send_packet_in(ofproto, &upcall, flow, false);
-
- return true;
- } else {
- int error;
-
- error = dpif_execute(ofproto->dpif, odp_actions, actions_len, packet);
- ofpbuf_delete(packet);
- return !error;
- }
-}
-
-/* Executes the actions indicated by 'facet' on 'packet' and credits 'facet''s
- * statistics appropriately. 'packet' must have at least sizeof(struct
- * ofp_packet_in) bytes of headroom.
- *
- * For correct results, 'packet' must actually be in 'facet''s flow; that is,
- * applying flow_extract() to 'packet' would yield the same flow as
- * 'facet->flow'.
- *
- * 'facet' must have accurately composed ODP actions; that is, it must not be
- * in need of revalidation.
- *
- * Takes ownership of 'packet'. */
-static void
-facet_execute(struct ofproto *ofproto, struct facet *facet,
- struct ofpbuf *packet)
-{
- struct dpif_flow_stats stats;
-
- assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in));
-
- flow_extract_stats(&facet->flow, packet, &stats);
- stats.used = time_msec();
- if (execute_odp_actions(ofproto, &facet->flow,
- facet->actions, facet->actions_len, packet)) {
- facet_update_stats(ofproto, facet, &stats);
- }
-}
-
-/* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s
- * statistics (or the statistics for one of its facets) appropriately.
- * 'packet' must have at least sizeof(struct ofp_packet_in) bytes of headroom.
- *
- * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited
- * with statistics for 'packet' either way.
- *
- * Takes ownership of 'packet'. */
-static void
-rule_execute(struct ofproto *ofproto, struct rule *rule, uint16_t in_port,
- struct ofpbuf *packet)
-{
- struct action_xlate_ctx ctx;
- struct ofpbuf *odp_actions;
- struct facet *facet;
- struct flow flow;
- size_t size;
-
- assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in));
-
- flow_extract(packet, 0, in_port, &flow);
-
- /* First look for a related facet. If we find one, account it to that. */
- facet = facet_lookup_valid(ofproto, &flow);
- if (facet && facet->rule == rule) {
- facet_execute(ofproto, facet, packet);
- return;
- }
-
- /* Otherwise, if 'rule' is in fact the correct rule for 'packet', then
- * create a new facet for it and use that. */
- if (rule_lookup(ofproto, &flow) == rule) {
- facet = facet_create(ofproto, rule, &flow, packet);
- facet_execute(ofproto, facet, packet);
- facet_install(ofproto, facet, true);
- return;
- }
-
- /* We can't account anything to a facet. If we were to try, then that
- * facet would have a non-matching rule, busting our invariants. */
- action_xlate_ctx_init(&ctx, ofproto, &flow, packet);
- odp_actions = xlate_actions(&ctx, rule->actions, rule->n_actions);
- size = packet->size;
- if (execute_odp_actions(ofproto, &flow, odp_actions->data,
- odp_actions->size, packet)) {
- rule->used = time_msec();
- rule->packet_count++;
- rule->byte_count += size;
- flow_push_stats(ofproto, rule, &flow, 1, size, rule->used);
- }
- ofpbuf_delete(odp_actions);
-}
-
-/* Inserts 'rule' into 'p''s flow table. */
-static void
-rule_insert(struct ofproto *p, struct rule *rule)
-{
- struct rule *displaced_rule;
-
- displaced_rule = rule_from_cls_rule(classifier_insert(&p->cls, &rule->cr));
- if (displaced_rule) {
- rule_destroy(p, displaced_rule);
- }
- p->need_revalidate = true;
-}
-
-/* Creates and returns a new facet within 'ofproto' owned by 'rule', given a
- * 'flow' and an example 'packet' within that flow.
- *
- * The caller must already have determined that no facet with an identical
- * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
- * 'ofproto''s classifier table. */
-static struct facet *
-facet_create(struct ofproto *ofproto, struct rule *rule,
- const struct flow *flow, const struct ofpbuf *packet)
-{
- struct facet *facet;
-
- facet = xzalloc(sizeof *facet);
- facet->used = time_msec();
- hmap_insert(&ofproto->facets, &facet->hmap_node, flow_hash(flow, 0));
- list_push_back(&rule->facets, &facet->list_node);
- facet->rule = rule;
- facet->flow = *flow;
- netflow_flow_init(&facet->nf_flow);
- netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
-
- facet_make_actions(ofproto, facet, packet);
-
- return facet;
-}
-
-static void
-facet_free(struct facet *facet)
-{
- free(facet->actions);
- free(facet);
-}
-
-/* Remove 'rule' from 'ofproto' and free up the associated memory:
- *
- * - Removes 'rule' from the classifier.
- *
- * - If 'rule' has facets, revalidates them (and possibly uninstalls and
- * destroys them), via rule_destroy().
- */
-static void
-rule_remove(struct ofproto *ofproto, struct rule *rule)
-{
- COVERAGE_INC(ofproto_del_rule);
- ofproto->need_revalidate = true;
- classifier_remove(&ofproto->cls, &rule->cr);
- rule_destroy(ofproto, rule);
-}
-
-/* Remove 'facet' from 'ofproto' and free up the associated memory:
- *
- * - If 'facet' was installed in the datapath, uninstalls it and updates its
- * rule's statistics, via facet_uninstall().
- *
- * - Removes 'facet' from its rule and from ofproto->facets.
- */
-static void
-facet_remove(struct ofproto *ofproto, struct facet *facet)
-{
- facet_uninstall(ofproto, facet);
- facet_flush_stats(ofproto, facet);
- hmap_remove(&ofproto->facets, &facet->hmap_node);
- list_remove(&facet->list_node);
- facet_free(facet);
-}
-
-/* Composes the ODP actions for 'facet' based on its rule's actions. */
-static void
-facet_make_actions(struct ofproto *p, struct facet *facet,
- const struct ofpbuf *packet)
-{
- const struct rule *rule = facet->rule;
- struct ofpbuf *odp_actions;
- struct action_xlate_ctx ctx;
-
- action_xlate_ctx_init(&ctx, p, &facet->flow, packet);
- odp_actions = xlate_actions(&ctx, rule->actions, rule->n_actions);
- facet->tags = ctx.tags;
- facet->may_install = ctx.may_set_up_flow;
- facet->nf_flow.output_iface = ctx.nf_output_iface;
-
- if (facet->actions_len != odp_actions->size
- || memcmp(facet->actions, odp_actions->data, odp_actions->size)) {
- free(facet->actions);
- facet->actions_len = odp_actions->size;
- facet->actions = xmemdup(odp_actions->data, odp_actions->size);
- }
-
- ofpbuf_delete(odp_actions);
-}
-
-static int
-facet_put__(struct ofproto *ofproto, struct facet *facet,
- const struct nlattr *actions, size_t actions_len,
- struct dpif_flow_stats *stats)
-{
- struct odputil_keybuf keybuf;
- enum dpif_flow_put_flags flags;
- struct ofpbuf key;
-
- flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
- if (stats) {
- flags |= DPIF_FP_ZERO_STATS;
- facet->dp_packet_count = 0;
- facet->dp_byte_count = 0;
- }
-
- ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
- odp_flow_key_from_flow(&key, &facet->flow);
-
- return dpif_flow_put(ofproto->dpif, flags, key.data, key.size,
- actions, actions_len, stats);
-}
-
-/* If 'facet' is installable, inserts or re-inserts it into 'p''s datapath. If
- * 'zero_stats' is true, clears any existing statistics from the datapath for
- * 'facet'. */
-static void
-facet_install(struct ofproto *p, struct facet *facet, bool zero_stats)
-{
- struct dpif_flow_stats stats;
-
- if (facet->may_install
- && !facet_put__(p, facet, facet->actions, facet->actions_len,
- zero_stats ? &stats : NULL)) {
- facet->installed = true;
- }
-}
-
-static void
-facet_account(struct ofproto *ofproto,
- struct facet *facet, uint64_t extra_bytes)
-{
- uint64_t total_bytes, n_bytes;
- struct ofbundle *in_bundle;
- const struct nlattr *a;
- tag_type dummy = 0;
- unsigned int left;
- int vlan;
-
- total_bytes = facet->byte_count + extra_bytes;
- if (total_bytes <= facet->accounted_bytes) {
- return;
- }
- n_bytes = total_bytes - facet->accounted_bytes;
- facet->accounted_bytes = total_bytes;
-
- /* Test that 'tags' is nonzero to ensure that only flows that include an
- * OFPP_NORMAL action are used for learning and bond slave rebalancing.
- * This works because OFPP_NORMAL always sets a nonzero tag value.
- *
- * Feed information from the active flows back into the learning table to
- * ensure that table is always in sync with what is actually flowing
- * through the datapath. */
- if (!facet->tags
- || !is_admissible(ofproto, &facet->flow, false, &dummy,
- &vlan, &in_bundle)) {
- return;
- }
-
- update_learning_table(ofproto, &facet->flow, vlan, in_bundle);
-
- if (!ofproto->has_bonded_bundles) {
- return;
- }
- NL_ATTR_FOR_EACH_UNSAFE (a, left, facet->actions, facet->actions_len) {
- if (nl_attr_type(a) == ODP_ACTION_ATTR_OUTPUT) {
- struct ofport *port = get_port(ofproto, nl_attr_get_u32(a));
- if (port && port->bundle && port->bundle->bond) {
- bond_account(port->bundle->bond, &facet->flow, vlan, n_bytes);
- }
- }
- }
-}
-
-/* If 'rule' is installed in the datapath, uninstalls it. */
-static void
-facet_uninstall(struct ofproto *p, struct facet *facet)
-{
- if (facet->installed) {
- struct odputil_keybuf keybuf;
- struct dpif_flow_stats stats;
- struct ofpbuf key;
-
- ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
- odp_flow_key_from_flow(&key, &facet->flow);
-
- if (!dpif_flow_del(p->dpif, key.data, key.size, &stats)) {
- facet_update_stats(p, facet, &stats);
- }
- facet->installed = false;
- facet->dp_packet_count = 0;
- facet->dp_byte_count = 0;
- } else {
- assert(facet->dp_packet_count == 0);
- assert(facet->dp_byte_count == 0);
- }
-}
-
-/* Returns true if the only action for 'facet' is to send to the controller.
- * (We don't report NetFlow expiration messages for such facets because they
- * are just part of the control logic for the network, not real traffic). */
-static bool
-facet_is_controller_flow(struct facet *facet)
-{
- return (facet
- && facet->rule->n_actions == 1
- && action_outputs_to_port(&facet->rule->actions[0],
- htons(OFPP_CONTROLLER)));
-}
-
-/* Folds all of 'facet''s statistics into its rule. Also updates the
- * accounting ofhook and emits a NetFlow expiration if appropriate. All of
- * 'facet''s statistics in the datapath should have been zeroed and folded into
- * its packet and byte counts before this function is called. */
-static void
-facet_flush_stats(struct ofproto *ofproto, struct facet *facet)
-{
- assert(!facet->dp_byte_count);
- assert(!facet->dp_packet_count);
-
- facet_push_stats(ofproto, facet);
- facet_account(ofproto, facet, 0);
-
- if (ofproto->netflow && !facet_is_controller_flow(facet)) {
- struct ofexpired expired;
- expired.flow = facet->flow;
- expired.packet_count = facet->packet_count;
- expired.byte_count = facet->byte_count;
- expired.used = facet->used;
- netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
- }
-
- facet->rule->packet_count += facet->packet_count;
- facet->rule->byte_count += facet->byte_count;
-
- /* Reset counters to prevent double counting if 'facet' ever gets
- * reinstalled. */
- facet->packet_count = 0;
- facet->byte_count = 0;
- facet->rs_packet_count = 0;
- facet->rs_byte_count = 0;
- facet->accounted_bytes = 0;
-
- netflow_flow_clear(&facet->nf_flow);
-}
-
-/* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
- * Returns it if found, otherwise a null pointer.
- *
- * The returned facet might need revalidation; use facet_lookup_valid()
- * instead if that is important. */
-static struct facet *
-facet_find(struct ofproto *ofproto, const struct flow *flow)
-{
- struct facet *facet;
-
- HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, flow_hash(flow, 0),
- &ofproto->facets) {
- if (flow_equal(flow, &facet->flow)) {
- return facet;
- }
- }
-
- return NULL;
-}
-
-/* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
- * Returns it if found, otherwise a null pointer.
- *
- * The returned facet is guaranteed to be valid. */
-static struct facet *
-facet_lookup_valid(struct ofproto *ofproto, const struct flow *flow)
-{
- struct facet *facet = facet_find(ofproto, flow);
-
- /* The facet we found might not be valid, since we could be in need of
- * revalidation. If it is not valid, don't return it. */
- if (facet
- && ofproto->need_revalidate
- && !facet_revalidate(ofproto, facet)) {
- COVERAGE_INC(ofproto_invalidated);
- return NULL;
- }
-
- return facet;
-}
-
-/* Re-searches 'ofproto''s classifier for a rule matching 'facet':
- *
- * - If the rule found is different from 'facet''s current rule, moves
- * 'facet' to the new rule and recompiles its actions.
- *
- * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
- * where it is and recompiles its actions anyway.
- *
- * - If there is none, destroys 'facet'.
- *
- * Returns true if 'facet' still exists, false if it has been destroyed. */
-static bool
-facet_revalidate(struct ofproto *ofproto, struct facet *facet)
-{
- struct action_xlate_ctx ctx;
- struct ofpbuf *odp_actions;
- struct rule *new_rule;
- bool actions_changed;
-
- COVERAGE_INC(facet_revalidate);
-
- /* Determine the new rule. */
- new_rule = rule_lookup(ofproto, &facet->flow);
- if (!new_rule) {
- /* No new rule, so delete the facet. */
- facet_remove(ofproto, facet);
- return false;
- }
-
- /* Calculate new ODP actions.
- *
- * We do not modify any 'facet' state yet, because we might need to, e.g.,
- * emit a NetFlow expiration and, if so, we need to have the old state
- * around to properly compose it. */
- action_xlate_ctx_init(&ctx, ofproto, &facet->flow, NULL);
- odp_actions = xlate_actions(&ctx, new_rule->actions, new_rule->n_actions);
- actions_changed = (facet->actions_len != odp_actions->size
- || memcmp(facet->actions, odp_actions->data,
- facet->actions_len));
-
- /* If the ODP actions changed or the installability changed, then we need
- * to talk to the datapath. */
- if (actions_changed || ctx.may_set_up_flow != facet->installed) {
- if (ctx.may_set_up_flow) {
- struct dpif_flow_stats stats;
-
- facet_put__(ofproto, facet,
- odp_actions->data, odp_actions->size, &stats);
- facet_update_stats(ofproto, facet, &stats);
- } else {
- facet_uninstall(ofproto, facet);
- }
-
- /* The datapath flow is gone or has zeroed stats, so push stats out of
- * 'facet' into 'rule'. */
- facet_flush_stats(ofproto, facet);
- }
-
- /* Update 'facet' now that we've taken care of all the old state. */
- facet->tags = ctx.tags;
- facet->nf_flow.output_iface = ctx.nf_output_iface;
- facet->may_install = ctx.may_set_up_flow;
- if (actions_changed) {
- free(facet->actions);
- facet->actions_len = odp_actions->size;
- facet->actions = xmemdup(odp_actions->data, odp_actions->size);
- }
- if (facet->rule != new_rule) {
- COVERAGE_INC(facet_changed_rule);
- list_remove(&facet->list_node);
- list_push_back(&new_rule->facets, &facet->list_node);
- facet->rule = new_rule;
- facet->used = new_rule->created;
- facet->rs_used = facet->used;
- }
-
- ofpbuf_delete(odp_actions);
-
- return true;
-}
-\f
-/* Bridge packet processing functions. */
-
-struct dst {
- struct ofport *port;
- uint16_t vlan;
-};
-
-struct dst_set {
- struct dst builtin[32];
- struct dst *dsts;
- size_t n, allocated;
-};
-
-static void dst_set_init(struct dst_set *);
-static void dst_set_add(struct dst_set *, const struct dst *);
-static void dst_set_free(struct dst_set *);
-
-static struct ofport *ofbundle_get_a_port(const struct ofbundle *);
-
-static bool
-set_dst(struct action_xlate_ctx *ctx, struct dst *dst,
- const struct ofbundle *in_bundle, const struct ofbundle *out_bundle)
-{
- dst->vlan = (out_bundle->vlan >= 0 ? OFP_VLAN_NONE
- : in_bundle->vlan >= 0 ? in_bundle->vlan
- : ctx->flow.vlan_tci == 0 ? OFP_VLAN_NONE
- : vlan_tci_to_vid(ctx->flow.vlan_tci));
-
- dst->port = (!out_bundle->bond
- ? ofbundle_get_a_port(out_bundle)
- : bond_choose_output_slave(out_bundle->bond, &ctx->flow,
- dst->vlan, &ctx->tags));
-
- return dst->port != NULL;
-}
-
-static int
-mirror_mask_ffs(mirror_mask_t mask)
-{
- BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask));
- return ffs(mask);
-}
-
-static void
-dst_set_init(struct dst_set *set)
-{
- set->dsts = set->builtin;
- set->n = 0;
- set->allocated = ARRAY_SIZE(set->builtin);
-}
-
-static void
-dst_set_add(struct dst_set *set, const struct dst *dst)
-{
- if (set->n >= set->allocated) {
- size_t new_allocated;
- struct dst *new_dsts;
-
- new_allocated = set->allocated * 2;
- new_dsts = xmalloc(new_allocated * sizeof *new_dsts);
- memcpy(new_dsts, set->dsts, set->n * sizeof *new_dsts);
-
- dst_set_free(set);
-
- set->dsts = new_dsts;
- set->allocated = new_allocated;
- }
- set->dsts[set->n++] = *dst;
-}
-
-static void
-dst_set_free(struct dst_set *set)
-{
- if (set->dsts != set->builtin) {
- free(set->dsts);
- }
-}
-
-static bool
-dst_is_duplicate(const struct dst_set *set, const struct dst *test)
-{
- size_t i;
- for (i = 0; i < set->n; i++) {
- if (set->dsts[i].vlan == test->vlan
- && set->dsts[i].port == test->port) {
- return true;
- }
- }
- return false;
-}
-
-static bool
-ofbundle_trunks_vlan(const struct ofbundle *bundle, uint16_t vlan)
-{
- return bundle->vlan < 0 && vlan_bitmap_contains(bundle->trunks, vlan);
-}
-
-static bool
-ofbundle_includes_vlan(const struct ofbundle *bundle, uint16_t vlan)
-{
- return vlan == bundle->vlan || ofbundle_trunks_vlan(bundle, vlan);
-}
-
-/* Returns an arbitrary interface within 'bundle'. */
-static struct ofport *
-ofbundle_get_a_port(const struct ofbundle *bundle)
-{
- return CONTAINER_OF(list_front(&bundle->ports),
- struct ofport, bundle_node);
-}
-
-static void
-compose_dsts(struct action_xlate_ctx *ctx, uint16_t vlan,
- const struct ofbundle *in_bundle,
- const struct ofbundle *out_bundle, struct dst_set *set)
-{
- struct dst dst;
-
- if (out_bundle == OFBUNDLE_FLOOD) {
- struct ofbundle *bundle;
-
- HMAP_FOR_EACH (bundle, hmap_node, &ctx->ofproto->bundles) {
- if (bundle != in_bundle
- && ofbundle_includes_vlan(bundle, vlan)
- && bundle->floodable
- && !bundle->mirror_out
- && set_dst(ctx, &dst, in_bundle, bundle)) {
- dst_set_add(set, &dst);
- }
- }
- ctx->nf_output_iface = NF_OUT_FLOOD;
- } else if (out_bundle && set_dst(ctx, &dst, in_bundle, out_bundle)) {
- dst_set_add(set, &dst);
- ctx->nf_output_iface = dst.port->odp_port;
- }
-}
-
-static bool
-vlan_is_mirrored(const struct ofmirror *m, int vlan)
-{
- return vlan_bitmap_contains(m->vlans, vlan);
-}
-
-static void
-compose_mirror_dsts(struct action_xlate_ctx *ctx,
- uint16_t vlan, const struct ofbundle *in_bundle,
- struct dst_set *set)
-{
- struct ofproto *ofproto = ctx->ofproto;
- mirror_mask_t mirrors;
- int flow_vlan;
- size_t i;
-
- mirrors = in_bundle->src_mirrors;
- for (i = 0; i < set->n; i++) {
- mirrors |= set->dsts[i].port->bundle->dst_mirrors;
- }
-
- if (!mirrors) {
- return;
- }
-
- flow_vlan = vlan_tci_to_vid(ctx->flow.vlan_tci);
- if (flow_vlan == 0) {
- flow_vlan = OFP_VLAN_NONE;
- }
-
- while (mirrors) {
- struct ofmirror *m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
- if (vlan_is_mirrored(m, vlan)) {
- struct dst dst;
-
- if (m->out) {
- if (set_dst(ctx, &dst, in_bundle, m->out)
- && !dst_is_duplicate(set, &dst)) {
- dst_set_add(set, &dst);
- }
- } else {
- struct ofbundle *bundle;
-
- HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
- if (ofbundle_includes_vlan(bundle, m->out_vlan)
- && set_dst(ctx, &dst, in_bundle, bundle))
- {
- if (bundle->vlan < 0) {
- dst.vlan = m->out_vlan;
- }
- if (dst_is_duplicate(set, &dst)) {
- continue;
- }
-
- /* Use the vlan tag on the original flow instead of
- * the one passed in the vlan parameter. This ensures
- * that we compare the vlan from before any implicit
- * tagging tags place. This is necessary because
- * dst->vlan is the final vlan, after removing implicit
- * tags. */
- if (bundle == in_bundle && dst.vlan == flow_vlan) {
- /* Don't send out input port on same VLAN. */
- continue;
- }
- dst_set_add(set, &dst);
- }
- }
- }
- }
- mirrors &= mirrors - 1;
- }
-}
-
-static void
-compose_actions(struct action_xlate_ctx *ctx, uint16_t vlan,
- const struct ofbundle *in_bundle,
- const struct ofbundle *out_bundle)
-{
- uint16_t initial_vlan, cur_vlan;
- const struct dst *dst;
- struct dst_set set;
-
- dst_set_init(&set);
- compose_dsts(ctx, vlan, in_bundle, out_bundle, &set);
- compose_mirror_dsts(ctx, vlan, in_bundle, &set);
-
- /* Output all the packets we can without having to change the VLAN. */
- initial_vlan = vlan_tci_to_vid(ctx->flow.vlan_tci);
- if (initial_vlan == 0) {
- initial_vlan = OFP_VLAN_NONE;
- }
- for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) {
- if (dst->vlan != initial_vlan) {
- continue;
- }
- nl_msg_put_u32(ctx->odp_actions,
- ODP_ACTION_ATTR_OUTPUT, dst->port->odp_port);
- }
-
- /* Then output the rest. */
- cur_vlan = initial_vlan;
- for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) {
- if (dst->vlan == initial_vlan) {
- continue;
- }
- if (dst->vlan != cur_vlan) {
- if (dst->vlan == OFP_VLAN_NONE) {
- nl_msg_put_flag(ctx->odp_actions, ODP_ACTION_ATTR_STRIP_VLAN);
- } else {
- ovs_be16 tci;
- tci = htons(dst->vlan & VLAN_VID_MASK);
- tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK);
- nl_msg_put_be16(ctx->odp_actions,
- ODP_ACTION_ATTR_SET_DL_TCI, tci);
- }
- cur_vlan = dst->vlan;
- }
- nl_msg_put_u32(ctx->odp_actions,
- ODP_ACTION_ATTR_OUTPUT, dst->port->odp_port);
- }
-
- dst_set_free(&set);
-}
-
-/* Returns the effective vlan of a packet, taking into account both the
- * 802.1Q header and implicitly tagged ports. A value of 0 indicates that
- * the packet is untagged and -1 indicates it has an invalid header and
- * should be dropped. */
-static int
-flow_get_vlan(struct ofproto *ofproto, const struct flow *flow,
- struct ofbundle *in_bundle, bool have_packet)
-{
- int vlan = vlan_tci_to_vid(flow->vlan_tci);
- if (in_bundle->vlan >= 0) {
- if (vlan) {
- if (have_packet) {
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
- VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged "
- "packet received on port %s configured with "
- "implicit VLAN %"PRIu16,
- ofproto->name, vlan,
- in_bundle->name, in_bundle->vlan);
- }
- return -1;
- }
- vlan = in_bundle->vlan;
- } else {
- if (!ofbundle_includes_vlan(in_bundle, vlan)) {
- if (have_packet) {
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
- VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged "
- "packet received on port %s not configured for "
- "trunking VLAN %d",
- ofproto->name, vlan, in_bundle->name, vlan);
- }
- return -1;
- }
- }
-
- return vlan;
-}
-
-/* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
- * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
- * indicate this; newer upstream kernels use gratuitous ARP requests. */
-static bool
-is_gratuitous_arp(const struct flow *flow)
-{
- return (flow->dl_type == htons(ETH_TYPE_ARP)
- && eth_addr_is_broadcast(flow->dl_dst)
- && (flow->nw_proto == ARP_OP_REPLY
- || (flow->nw_proto == ARP_OP_REQUEST
- && flow->nw_src == flow->nw_dst)));
-}
-
-static void
-update_learning_table(struct ofproto *ofproto,
- const struct flow *flow, int vlan,
- struct ofbundle *in_bundle)
-{
- struct mac_entry *mac;
-
- if (!mac_learning_may_learn(ofproto->ml, flow->dl_src, vlan)) {
- return;
- }
-
- mac = mac_learning_insert(ofproto->ml, flow->dl_src, vlan);
- if (is_gratuitous_arp(flow)) {
- /* We don't want to learn from gratuitous ARP packets that are
- * reflected back over bond slaves so we lock the learning table. */
- if (!in_bundle->bond) {
- mac_entry_set_grat_arp_lock(mac);
- } else if (mac_entry_is_grat_arp_locked(mac)) {
- return;
- }
- }
-
- if (mac_entry_is_new(mac) || mac->port.p != in_bundle) {
- /* The log messages here could actually be useful in debugging,
- * so keep the rate limit relatively high. */
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
- VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is "
- "on port %s in VLAN %d",
- ofproto->name, ETH_ADDR_ARGS(flow->dl_src),
- in_bundle->name, vlan);
-
- mac->port.p = in_bundle;
- tag_set_add(&ofproto->revalidate_set,
- mac_learning_changed(ofproto->ml, mac));
- }
-}
-
-/* Determines whether packets in 'flow' within 'br' should be forwarded or
- * dropped. Returns true if they may be forwarded, false if they should be
- * dropped.
- *
- * If 'have_packet' is true, it indicates that the caller is processing a
- * received packet. If 'have_packet' is false, then the caller is just
- * revalidating an existing flow because configuration has changed. Either
- * way, 'have_packet' only affects logging (there is no point in logging errors
- * during revalidation).
- *
- * Sets '*in_portp' to the input port. This will be a null pointer if
- * flow->in_port does not designate a known input port (in which case
- * is_admissible() returns false).
- *
- * When returning true, sets '*vlanp' to the effective VLAN of the input
- * packet, as returned by flow_get_vlan().
- *
- * May also add tags to '*tags', although the current implementation only does
- * so in one special case.
- */
-static bool
-is_admissible(struct ofproto *ofproto, const struct flow *flow,
- bool have_packet,
- tag_type *tags, int *vlanp, struct ofbundle **in_bundlep)
-{
- struct ofport *in_port;
- struct ofbundle *in_bundle;
- int vlan;
-
- /* Find the port and bundle for the received packet. */
- in_port = get_port(ofproto, flow->in_port);
- *in_bundlep = in_bundle = in_port->bundle;
- if (!in_port || !in_bundle) {
- /* No interface? Something fishy... */
- if (have_packet) {
- /* Odd. A few possible reasons here:
- *
- * - We deleted a port but there are still a few packets queued up
- * from it.
- *
- * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
- * we don't know about.
- *
- * - Packet arrived on the local port but the local port is not
- * part of a bundle.
- */
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
-
- VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown "
- "port %"PRIu16,
- ofproto->name, flow->in_port);
- }
- return false;
- }
- *vlanp = vlan = flow_get_vlan(ofproto, flow, in_bundle, have_packet);
- if (vlan < 0) {
- return false;
- }
-
- /* Drop frames for reserved multicast addresses. */
- if (eth_addr_is_reserved(flow->dl_dst)) {
- return false;
- }
-
- /* Drop frames on bundles reserved for mirroring. */
- if (in_bundle->mirror_out) {
- if (have_packet) {
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
- VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
- "%s, which is reserved exclusively for mirroring",
- ofproto->name, in_bundle->name);
- }
- return false;
- }
-
- if (in_bundle->bond) {
- struct mac_entry *mac;
-
- switch (bond_check_admissibility(in_bundle->bond, in_port,
- flow->dl_dst, tags)) {
- case BV_ACCEPT:
- break;
-
- case BV_DROP:
- return false;
-
- case BV_DROP_IF_MOVED:
- mac = mac_learning_lookup(ofproto->ml, flow->dl_src, vlan, NULL);
- if (mac && mac->port.p != in_bundle &&
- (!is_gratuitous_arp(flow)
- || mac_entry_is_grat_arp_locked(mac))) {
- return false;
- }
- break;
- }
- }
-
- return true;
-}
-
-/* If the composed actions may be applied to any packet in the given 'flow',
- * returns true. Otherwise, the actions should only be applied to 'packet', or
- * not at all, if 'packet' was NULL. */
-static bool
-xlate_normal(struct action_xlate_ctx *ctx)
-{
- struct ofbundle *in_bundle;
- struct ofbundle *out_bundle;
- struct mac_entry *mac;
- int vlan;
-
- /* Check whether we should drop packets in this flow. */
- if (!is_admissible(ctx->ofproto, &ctx->flow, ctx->packet != NULL,
- &ctx->tags, &vlan, &in_bundle)) {
- out_bundle = NULL;
- goto done;
- }
-
- /* Learn source MAC (but don't try to learn from revalidation). */
- if (ctx->packet) {
- update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle);
- }
-
- /* Determine output bundle. */
- mac = mac_learning_lookup(ctx->ofproto->ml, ctx->flow.dl_dst, vlan,
- &ctx->tags);
- if (mac) {
- out_bundle = mac->port.p;
- } else if (!ctx->packet && !eth_addr_is_multicast(ctx->flow.dl_dst)) {
- /* If we are revalidating but don't have a learning entry then eject
- * the flow. Installing a flow that floods packets opens up a window
- * of time where we could learn from a packet reflected on a bond and
- * blackhole packets before the learning table is updated to reflect
- * the correct port. */
- return false;
- } else {
- out_bundle = OFBUNDLE_FLOOD;
- }
-
- /* Don't send packets out their input bundles. */
- if (in_bundle == out_bundle) {
- out_bundle = NULL;
- }
-
-done:
- if (in_bundle) {
- compose_actions(ctx, vlan, in_bundle, out_bundle);
- }
-
- return true;
-}
-\f
-static void
-send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh,
- int error)
-{
- struct ofpbuf *buf = ofputil_encode_error_msg(error, oh);
- if (buf) {
- COVERAGE_INC(ofproto_error);
- ofconn_send_reply(ofconn, buf);
- }
-}
-
-static int
-handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
-{
- ofconn_send_reply(ofconn, make_echo_reply(oh));
- return 0;
-}
-
-static int
-handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
-{
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- struct ofp_switch_features *osf;
- struct ofpbuf *buf;
- struct ofport *port;
-
- osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf);
- osf->datapath_id = htonll(ofproto->datapath_id);
- osf->n_buffers = htonl(pktbuf_capacity());
- osf->n_tables = 2;
- osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS |
- OFPC_PORT_STATS | OFPC_ARP_MATCH_IP);
- osf->actions = htonl((1u << OFPAT_OUTPUT) |
- (1u << OFPAT_SET_VLAN_VID) |
- (1u << OFPAT_SET_VLAN_PCP) |
- (1u << OFPAT_STRIP_VLAN) |
- (1u << OFPAT_SET_DL_SRC) |
- (1u << OFPAT_SET_DL_DST) |
- (1u << OFPAT_SET_NW_SRC) |
- (1u << OFPAT_SET_NW_DST) |
- (1u << OFPAT_SET_NW_TOS) |
- (1u << OFPAT_SET_TP_SRC) |
- (1u << OFPAT_SET_TP_DST) |
- (1u << OFPAT_ENQUEUE));
-
- HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
- ofpbuf_put(buf, &port->opp, sizeof port->opp);
- }
-
- ofconn_send_reply(ofconn, buf);
- return 0;
-}
-
-static int
-handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
-{
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- struct ofpbuf *buf;
- struct ofp_switch_config *osc;
- uint16_t flags;
- bool drop_frags;
-
- /* Figure out flags. */
- dpif_get_drop_frags(ofproto->dpif, &drop_frags);
- flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL;
-
- /* Send reply. */
- osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf);
- osc->flags = htons(flags);
- osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn));
- ofconn_send_reply(ofconn, buf);
-
- return 0;
-}
-
-static int
-handle_set_config(struct ofconn *ofconn, const struct ofp_switch_config *osc)
-{
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- uint16_t flags = ntohs(osc->flags);
-
- if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
- && ofconn_get_role(ofconn) != NX_ROLE_SLAVE) {
- switch (flags & OFPC_FRAG_MASK) {
- case OFPC_FRAG_NORMAL:
- dpif_set_drop_frags(ofproto->dpif, false);
- break;
- case OFPC_FRAG_DROP:
- dpif_set_drop_frags(ofproto->dpif, true);
- break;
- default:
- VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")",
- osc->flags);
- break;
- }
- }
-
- ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len));
-
- return 0;
-}
-
-static void do_xlate_actions(const union ofp_action *in, size_t n_in,
- struct action_xlate_ctx *ctx);
-
-static void
-add_output_action(struct action_xlate_ctx *ctx, uint16_t port)
-{
- const struct ofport *ofport = get_port(ctx->ofproto, port);
-
- if (ofport) {
- if (ofport->opp.config & htonl(OFPPC_NO_FWD)) {
- /* Forwarding disabled on port. */
- return;
- }
- } else {
- /*
- * We don't have an ofport record for this port, but it doesn't hurt to
- * allow forwarding to it anyhow. Maybe such a port will appear later
- * and we're pre-populating the flow table.
- */
- }
-
- nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_OUTPUT, port);
- ctx->nf_output_iface = port;
-}
-
-static struct rule *
-rule_lookup(struct ofproto *ofproto, const struct flow *flow)
-{
- return rule_from_cls_rule(classifier_lookup(&ofproto->cls, flow));
-}
-
-static void
-xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port)
-{
- if (ctx->recurse < MAX_RESUBMIT_RECURSION) {
- uint16_t old_in_port;
- struct rule *rule;
-
- /* Look up a flow with 'in_port' as the input port. Then restore the
- * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
- * have surprising behavior). */
- old_in_port = ctx->flow.in_port;
- ctx->flow.in_port = in_port;
- rule = rule_lookup(ctx->ofproto, &ctx->flow);
- ctx->flow.in_port = old_in_port;
-
- if (ctx->resubmit_hook) {
- ctx->resubmit_hook(ctx, rule);
- }
-
- if (rule) {
- ctx->recurse++;
- do_xlate_actions(rule->actions, rule->n_actions, ctx);
- ctx->recurse--;
+ ofport_remove_with_name(ofproto, name);
+ ofport_install(ofproto, netdev, &opp);
}
} else {
- static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1);
-
- VLOG_ERR_RL(&recurse_rl, "NXAST_RESUBMIT recursed over %d times",
- MAX_RESUBMIT_RECURSION);
+ /* Any port named 'name' is gone now. */
+ ofport_remove_with_name(ofproto, name);
}
+ ofproto_port_destroy(&ofproto_port);
}
-static void
-flood_packets(struct ofproto *ofproto, uint16_t odp_in_port, ovs_be32 mask,
- uint16_t *nf_output_iface, struct ofpbuf *odp_actions)
+static int
+init_ports(struct ofproto *p)
{
- struct ofport *ofport;
+ struct ofproto_port_dump dump;
+ struct ofproto_port ofproto_port;
+
+ OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
+ uint16_t ofp_port = ofproto_port.ofp_port;
+ if (ofproto_get_port(p, ofp_port)) {
+ VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath",
+ ofp_port);
+ } else if (shash_find(&p->port_by_name, ofproto_port.name)) {
+ VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath",
+ ofproto_port.name);
+ } else {
+ struct ofp_phy_port opp;
+ struct netdev *netdev;
- HMAP_FOR_EACH (ofport, hmap_node, &ofproto->ports) {
- uint16_t odp_port = ofport->odp_port;
- if (odp_port != odp_in_port && !(ofport->opp.config & mask)) {
- nl_msg_put_u32(odp_actions, ODP_ACTION_ATTR_OUTPUT, odp_port);
+ netdev = ofport_open(&ofproto_port, &opp);
+ if (netdev) {
+ ofport_install(p, netdev, &opp);
+ }
}
}
- *nf_output_iface = NF_OUT_FLOOD;
+
+ return 0;
}
-static void
-xlate_output_action__(struct action_xlate_ctx *ctx,
- uint16_t port, uint16_t max_len)
+/* Find the minimum MTU of all non-datapath devices attached to 'p'.
+ * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
+static int
+find_min_mtu(struct ofproto *p)
{
- uint16_t odp_port;
- uint16_t prev_nf_output_iface = ctx->nf_output_iface;
+ struct ofport *ofport;
+ int mtu = 0;
- ctx->nf_output_iface = NF_OUT_DROP;
+ HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
+ struct netdev *netdev = ofport->netdev;
+ int dev_mtu;
- switch (port) {
- case OFPP_IN_PORT:
- add_output_action(ctx, ctx->flow.in_port);
- break;
- case OFPP_TABLE:
- xlate_table_action(ctx, ctx->flow.in_port);
- break;
- case OFPP_NORMAL:
- xlate_normal(ctx);
- break;
- case OFPP_FLOOD:
- flood_packets(ctx->ofproto, ctx->flow.in_port, htonl(OFPPC_NO_FLOOD),
- &ctx->nf_output_iface, ctx->odp_actions);
- break;
- case OFPP_ALL:
- flood_packets(ctx->ofproto, ctx->flow.in_port, htonl(0),
- &ctx->nf_output_iface, ctx->odp_actions);
- break;
- case OFPP_CONTROLLER:
- nl_msg_put_u64(ctx->odp_actions, ODP_ACTION_ATTR_CONTROLLER, max_len);
- break;
- case OFPP_LOCAL:
- add_output_action(ctx, ODPP_LOCAL);
- break;
- default:
- odp_port = ofp_port_to_odp_port(port);
- if (odp_port != ctx->flow.in_port) {
- add_output_action(ctx, odp_port);
+ /* Skip any internal ports, since that's what we're trying to
+ * set. */
+ if (!strcmp(netdev_get_type(netdev), "internal")) {
+ continue;
}
- break;
- }
- if (prev_nf_output_iface == NF_OUT_FLOOD) {
- ctx->nf_output_iface = NF_OUT_FLOOD;
- } else if (ctx->nf_output_iface == NF_OUT_DROP) {
- ctx->nf_output_iface = prev_nf_output_iface;
- } else if (prev_nf_output_iface != NF_OUT_DROP &&
- ctx->nf_output_iface != NF_OUT_FLOOD) {
- ctx->nf_output_iface = NF_OUT_MULTI;
+ if (netdev_get_mtu(netdev, &dev_mtu)) {
+ continue;
+ }
+ if (!mtu || dev_mtu < mtu) {
+ mtu = dev_mtu;
+ }
}
-}
-static void
-xlate_output_action(struct action_xlate_ctx *ctx,
- const struct ofp_action_output *oao)
-{
- xlate_output_action__(ctx, ntohs(oao->port), ntohs(oao->max_len));
+ return mtu ? mtu: ETH_PAYLOAD_MAX;
}
-/* If the final ODP action in 'ctx' is "pop priority", drop it, as an
- * optimization, because we're going to add another action that sets the
- * priority immediately after, or because there are no actions following the
- * pop. */
+/* Set the MTU of all datapath devices on 'p' to the minimum of the
+ * non-datapath ports. */
static void
-remove_pop_action(struct action_xlate_ctx *ctx)
+set_internal_devs_mtu(struct ofproto *p)
{
- if (ctx->odp_actions->size == ctx->last_pop_priority) {
- ctx->odp_actions->size -= NLA_ALIGN(NLA_HDRLEN);
- ctx->last_pop_priority = -1;
+ 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
-add_pop_action(struct action_xlate_ctx *ctx)
+ofproto_rule_destroy__(struct rule *rule)
{
- if (ctx->odp_actions->size != ctx->last_pop_priority) {
- nl_msg_put_flag(ctx->odp_actions, ODP_ACTION_ATTR_POP_PRIORITY);
- ctx->last_pop_priority = ctx->odp_actions->size;
- }
+ free(rule->actions);
+ rule->ofproto->ofproto_class->rule_dealloc(rule);
}
-static void
-xlate_enqueue_action(struct action_xlate_ctx *ctx,
- const struct ofp_action_enqueue *oae)
+/* 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.
+ *
+ * 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)
{
- uint16_t ofp_port, odp_port;
- uint32_t priority;
- int error;
+ assert(!rule->pending);
+ classifier_remove(&rule->ofproto->tables[rule->table_id], &rule->cr);
+ ofproto_rule_destroy__(rule);
+}
- error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(oae->queue_id),
- &priority);
- if (error) {
- /* Fall back to ordinary output action. */
- xlate_output_action__(ctx, ntohs(oae->port), 0);
- return;
- }
+/* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
+ * 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, uint16_t out_port)
+{
+ const union ofp_action *oa;
+ size_t left;
- /* Figure out ODP output port. */
- ofp_port = ntohs(oae->port);
- if (ofp_port != OFPP_IN_PORT) {
- odp_port = ofp_port_to_odp_port(ofp_port);
- } else {
- odp_port = ctx->flow.in_port;
+ if (out_port == OFPP_NONE) {
+ return true;
}
-
- /* Add ODP actions. */
- remove_pop_action(ctx);
- nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_SET_PRIORITY, priority);
- add_output_action(ctx, odp_port);
- add_pop_action(ctx);
-
- /* Update NetFlow output port. */
- if (ctx->nf_output_iface == NF_OUT_DROP) {
- ctx->nf_output_iface = odp_port;
- } else if (ctx->nf_output_iface != NF_OUT_FLOOD) {
- ctx->nf_output_iface = NF_OUT_MULTI;
+ 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;
}
-static void
-xlate_set_queue_action(struct action_xlate_ctx *ctx,
- const struct nx_action_set_queue *nasq)
+/* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s
+ * statistics appropriately. 'packet' must have at least sizeof(struct
+ * ofp_packet_in) bytes of headroom.
+ *
+ * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited
+ * with statistics for 'packet' either way.
+ *
+ * Takes ownership of 'packet'. */
+static int
+rule_execute(struct rule *rule, uint16_t in_port, struct ofpbuf *packet)
{
- uint32_t priority;
- int error;
-
- error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(nasq->queue_id),
- &priority);
- if (error) {
- /* Couldn't translate queue to a priority, so ignore. A warning
- * has already been logged. */
- return;
- }
+ struct flow flow;
- remove_pop_action(ctx);
- nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_SET_PRIORITY, priority);
-}
+ assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in));
-static void
-xlate_set_dl_tci(struct action_xlate_ctx *ctx)
-{
- ovs_be16 tci = ctx->flow.vlan_tci;
- if (!(tci & htons(VLAN_CFI))) {
- nl_msg_put_flag(ctx->odp_actions, ODP_ACTION_ATTR_STRIP_VLAN);
- } else {
- nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_TCI,
- tci & ~htons(VLAN_CFI));
- }
+ flow_extract(packet, 0, 0, in_port, &flow);
+ return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet);
}
-struct xlate_reg_state {
- ovs_be16 vlan_tci;
- ovs_be64 tun_id;
-};
-
-static void
-save_reg_state(const struct action_xlate_ctx *ctx,
- struct xlate_reg_state *state)
+/* Returns true if 'rule' should be hidden from the controller.
+ *
+ * Rules with priority higher than UINT16_MAX are set up by ofproto itself
+ * (e.g. by in-band control) and are intentionally hidden from the
+ * controller. */
+static bool
+rule_is_hidden(const struct rule *rule)
{
- state->vlan_tci = ctx->flow.vlan_tci;
- state->tun_id = ctx->flow.tun_id;
+ return rule->cr.priority > UINT16_MAX;
}
-
-static void
-update_reg_state(struct action_xlate_ctx *ctx,
- const struct xlate_reg_state *state)
+\f
+static int
+handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
{
- if (ctx->flow.vlan_tci != state->vlan_tci) {
- xlate_set_dl_tci(ctx);
- }
- if (ctx->flow.tun_id != state->tun_id) {
- nl_msg_put_be64(ctx->odp_actions,
- ODP_ACTION_ATTR_SET_TUNNEL, ctx->flow.tun_id);
- }
+ ofconn_send_reply(ofconn, make_echo_reply(oh));
+ return 0;
}
-static void
-xlate_autopath(struct action_xlate_ctx *ctx,
- const struct nx_action_autopath *naa)
+static int
+handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
{
- uint16_t ofp_port = ntohl(naa->id);
+ 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;
- port = get_port(ctx->ofproto, ofp_port_to_odp_port(ofp_port));
- if (!port || !port->bundle) {
- ofp_port = OFPP_NONE;
- } else if (port->bundle->bond) {
- /* Autopath does not support VLAN hashing. */
- struct ofport *slave = bond_choose_output_slave(
- port->bundle->bond, &ctx->flow, OFP_VLAN_NONE, &ctx->tags);
- if (slave) {
- ofp_port = odp_port_to_ofp_port(slave->odp_port);
- }
- }
- autopath_execute(naa, &ctx->flow, ofp_port);
-}
-
-static void
-xlate_nicira_action(struct action_xlate_ctx *ctx,
- const struct nx_action_header *nah)
-{
- const struct nx_action_resubmit *nar;
- const struct nx_action_set_tunnel *nast;
- const struct nx_action_set_queue *nasq;
- const struct nx_action_multipath *nam;
- const struct nx_action_autopath *naa;
- enum nx_action_subtype subtype = ntohs(nah->subtype);
- struct xlate_reg_state state;
- ovs_be64 tun_id;
-
- assert(nah->vendor == htonl(NX_VENDOR_ID));
- switch (subtype) {
- case NXAST_RESUBMIT:
- nar = (const struct nx_action_resubmit *) nah;
- xlate_table_action(ctx, ofp_port_to_odp_port(ntohs(nar->in_port)));
- break;
-
- case NXAST_SET_TUNNEL:
- nast = (const struct nx_action_set_tunnel *) nah;
- tun_id = htonll(ntohl(nast->tun_id));
- nl_msg_put_be64(ctx->odp_actions, ODP_ACTION_ATTR_SET_TUNNEL, tun_id);
- ctx->flow.tun_id = tun_id;
- break;
-
- case NXAST_DROP_SPOOFED_ARP:
- if (ctx->flow.dl_type == htons(ETH_TYPE_ARP)) {
- nl_msg_put_flag(ctx->odp_actions,
- ODP_ACTION_ATTR_DROP_SPOOFED_ARP);
- }
- break;
-
- case NXAST_SET_QUEUE:
- nasq = (const struct nx_action_set_queue *) nah;
- xlate_set_queue_action(ctx, nasq);
- break;
-
- case NXAST_POP_QUEUE:
- add_pop_action(ctx);
- break;
-
- case NXAST_REG_MOVE:
- save_reg_state(ctx, &state);
- nxm_execute_reg_move((const struct nx_action_reg_move *) nah,
- &ctx->flow);
- update_reg_state(ctx, &state);
- break;
-
- case NXAST_REG_LOAD:
- save_reg_state(ctx, &state);
- nxm_execute_reg_load((const struct nx_action_reg_load *) nah,
- &ctx->flow);
- update_reg_state(ctx, &state);
- break;
-
- case NXAST_NOTE:
- /* Nothing to do. */
- break;
-
- case NXAST_SET_TUNNEL64:
- tun_id = ((const struct nx_action_set_tunnel64 *) nah)->tun_id;
- nl_msg_put_be64(ctx->odp_actions, ODP_ACTION_ATTR_SET_TUNNEL, tun_id);
- ctx->flow.tun_id = tun_id;
- break;
-
- case NXAST_MULTIPATH:
- nam = (const struct nx_action_multipath *) nah;
- multipath_execute(nam, &ctx->flow);
- break;
-
- case NXAST_AUTOPATH:
- naa = (const struct nx_action_autopath *) nah;
- xlate_autopath(ctx, naa);
- break;
-
- /* If you add a new action here that modifies flow data, don't forget to
- * update the flow key in ctx->flow at the same time. */
+ ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, &actions);
+ assert(actions & (1 << OFPAT_OUTPUT)); /* sanity check */
- case NXAST_SNAT__OBSOLETE:
- default:
- VLOG_DBG_RL(&rl, "unknown Nicira action type %d", (int) subtype);
- break;
+ osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf);
+ osf->datapath_id = htonll(ofproto->datapath_id);
+ osf->n_buffers = htonl(pktbuf_capacity());
+ osf->n_tables = ofproto->n_tables;
+ osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS |
+ OFPC_PORT_STATS | OFPC_QUEUE_STATS);
+ if (arp_match_ip) {
+ osf->capabilities |= htonl(OFPC_ARP_MATCH_IP);
}
-}
-
-static void
-do_xlate_actions(const union ofp_action *in, size_t n_in,
- struct action_xlate_ctx *ctx)
-{
- struct actions_iterator iter;
- const union ofp_action *ia;
- const struct ofport *port;
+ osf->actions = htonl(actions);
- port = get_port(ctx->ofproto, ctx->flow.in_port);
- if (port && port->opp.config & htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP) &&
- port->opp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp)
- ? htonl(OFPPC_NO_RECV_STP)
- : htonl(OFPPC_NO_RECV))) {
- /* Drop this flow. */
- return;
+ HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
+ ofpbuf_put(buf, &port->opp, sizeof port->opp);
}
- for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) {
- enum ofp_action_type type = ntohs(ia->type);
- const struct ofp_action_dl_addr *oada;
-
- switch (type) {
- case OFPAT_OUTPUT:
- xlate_output_action(ctx, &ia->output);
- break;
-
- case OFPAT_SET_VLAN_VID:
- ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK);
- ctx->flow.vlan_tci |= ia->vlan_vid.vlan_vid | htons(VLAN_CFI);
- xlate_set_dl_tci(ctx);
- break;
-
- case OFPAT_SET_VLAN_PCP:
- ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK);
- ctx->flow.vlan_tci |= htons(
- (ia->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT) | VLAN_CFI);
- xlate_set_dl_tci(ctx);
- break;
-
- case OFPAT_STRIP_VLAN:
- ctx->flow.vlan_tci = htons(0);
- xlate_set_dl_tci(ctx);
- break;
-
- case OFPAT_SET_DL_SRC:
- oada = ((struct ofp_action_dl_addr *) ia);
- nl_msg_put_unspec(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_SRC,
- oada->dl_addr, ETH_ADDR_LEN);
- memcpy(ctx->flow.dl_src, oada->dl_addr, ETH_ADDR_LEN);
- break;
-
- case OFPAT_SET_DL_DST:
- oada = ((struct ofp_action_dl_addr *) ia);
- nl_msg_put_unspec(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_DST,
- oada->dl_addr, ETH_ADDR_LEN);
- memcpy(ctx->flow.dl_dst, oada->dl_addr, ETH_ADDR_LEN);
- break;
-
- case OFPAT_SET_NW_SRC:
- nl_msg_put_be32(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_SRC,
- ia->nw_addr.nw_addr);
- ctx->flow.nw_src = ia->nw_addr.nw_addr;
- break;
-
- case OFPAT_SET_NW_DST:
- nl_msg_put_be32(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_DST,
- ia->nw_addr.nw_addr);
- ctx->flow.nw_dst = ia->nw_addr.nw_addr;
- break;
-
- case OFPAT_SET_NW_TOS:
- nl_msg_put_u8(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_TOS,
- ia->nw_tos.nw_tos);
- ctx->flow.nw_tos = ia->nw_tos.nw_tos;
- break;
-
- case OFPAT_SET_TP_SRC:
- nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_TP_SRC,
- ia->tp_port.tp_port);
- ctx->flow.tp_src = ia->tp_port.tp_port;
- break;
-
- case OFPAT_SET_TP_DST:
- nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_TP_DST,
- ia->tp_port.tp_port);
- ctx->flow.tp_dst = ia->tp_port.tp_port;
- break;
-
- case OFPAT_VENDOR:
- xlate_nicira_action(ctx, (const struct nx_action_header *) ia);
- break;
-
- case OFPAT_ENQUEUE:
- xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia);
- break;
-
- default:
- VLOG_DBG_RL(&rl, "unknown action type %d", (int) type);
- break;
- }
- }
+ ofconn_send_reply(ofconn, buf);
+ return 0;
}
-static void
-action_xlate_ctx_init(struct action_xlate_ctx *ctx,
- struct ofproto *ofproto, const struct flow *flow,
- const struct ofpbuf *packet)
+static int
+handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
{
- ctx->ofproto = ofproto;
- ctx->flow = *flow;
- ctx->packet = packet;
- ctx->resubmit_hook = NULL;
- ctx->check_special = true;
-}
+ struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
+ struct ofp_switch_config *osc;
+ struct ofpbuf *buf;
-static bool
-ofproto_process_special(struct ofproto *ofproto, const struct flow *flow,
- const struct ofpbuf *packet)
-{
- if (cfm_should_process_flow(flow)) {
- struct ofport *ofport = get_port(ofproto, flow->in_port);
- if (ofport && ofport->cfm) {
- cfm_process_heartbeat(ofport->cfm, packet);
- }
- return true;
- } else if (flow->dl_type == htons(ETH_TYPE_LACP)) {
- struct ofport *port = get_port(ofproto, flow->in_port);
- if (port && port->bundle && port->bundle->lacp) {
- const struct lacp_pdu *pdu = parse_lacp_packet(packet);
- if (pdu) {
- lacp_process_pdu(port->bundle->lacp, port, pdu);
- }
- return true;
- }
- }
- return false;
+ /* Send reply. */
+ osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf);
+ osc->flags = htons(ofproto->frag_handling);
+ osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn));
+ ofconn_send_reply(ofconn, buf);
+
+ return 0;
}
-static struct ofpbuf *
-xlate_actions(struct action_xlate_ctx *ctx,
- const union ofp_action *in, size_t n_in)
+static int
+handle_set_config(struct ofconn *ofconn, const struct ofp_switch_config *osc)
{
- COVERAGE_INC(ofproto_ofp2odp);
+ struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
+ uint16_t flags = ntohs(osc->flags);
- ctx->odp_actions = ofpbuf_new(512);
- ctx->tags = 0;
- ctx->may_set_up_flow = true;
- ctx->nf_output_iface = NF_OUT_DROP;
- ctx->recurse = 0;
- ctx->last_pop_priority = -1;
+ if (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;
- if (ctx->check_special
- && ofproto_process_special(ctx->ofproto, &ctx->flow, ctx->packet)) {
- ctx->may_set_up_flow = false;
- } else {
- do_xlate_actions(in, n_in, ctx);
+ 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));
+ }
+ }
}
- remove_pop_action(ctx);
-
- /* Check with in-band control to see if we're allowed to set up this
- * flow. */
- if (!connmgr_may_set_up_flow(ctx->ofproto->connmgr, &ctx->flow,
- ctx->odp_actions->data,
- ctx->odp_actions->size)) {
- ctx->may_set_up_flow = false;
- }
+ ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len));
- return ctx->odp_actions;
+ return 0;
}
/* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
* error message code (composed with ofp_mkerr()) for the caller to propagate
- * upward. Otherwise, returns 0.
- *
- * The log message mentions 'msg_type'. */
+ * upward. Otherwise, returns 0. */
static int
-reject_slave_controller(struct ofconn *ofconn, const const char *msg_type)
+reject_slave_controller(const 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);
} else {
return 0;
struct ofp_packet_out *opo;
struct ofpbuf payload, *buffer;
union ofp_action *ofp_actions;
- struct action_xlate_ctx ctx;
- struct ofpbuf *odp_actions;
struct ofpbuf request;
struct flow flow;
size_t n_ofp_actions;
COVERAGE_INC(ofproto_packet_out);
- error = reject_slave_controller(ofconn, "OFPT_PACKET_OUT");
+ error = reject_slave_controller(ofconn);
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);
+ &buffer, NULL);
if (error || !buffer) {
return error;
}
buffer = NULL;
}
- /* Extract flow, check actions. */
- flow_extract(&payload, 0, ofp_port_to_odp_port(ntohs(opo->in_port)),
- &flow);
- error = validate_actions(ofp_actions, n_ofp_actions, &flow, p->max_ports);
- if (error) {
- goto exit;
- }
-
- /* Send. */
- action_xlate_ctx_init(&ctx, p, &flow, &payload);
- odp_actions = xlate_actions(&ctx, ofp_actions, n_ofp_actions);
- dpif_execute(p->dpif, odp_actions->data, odp_actions->size, &payload);
- ofpbuf_delete(odp_actions);
-
-exit:
+ /* Get in_port and partially validate it.
+ *
+ * We don't know what range of ports the ofproto actually implements, but
+ * we do know that only certain reserved ports (numbered OFPP_MAX and
+ * above) are valid. */
+ in_port = ntohs(opo->in_port);
+ if (in_port >= OFPP_MAX && in_port != OFPP_LOCAL && in_port != OFPP_NONE) {
+ return ofp_mkerr_nicira(OFPET_BAD_REQUEST, NXBRC_BAD_IN_PORT);
+ }
+
+ /* Send out packet. */
+ flow_extract(&payload, 0, 0, in_port, &flow);
+ error = p->ofproto_class->packet_out(p, &payload, &flow,
+ ofp_actions, n_ofp_actions);
ofpbuf_delete(buffer);
- return 0;
+
+ return error;
}
static void
-update_port_config(struct ofproto *p, struct ofport *port,
- ovs_be32 config, ovs_be32 mask)
+update_port_config(struct ofport *port, ovs_be32 config, ovs_be32 mask)
{
+ ovs_be32 old_config = port->opp.config;
+
mask &= config ^ port->opp.config;
if (mask & htonl(OFPPC_PORT_DOWN)) {
if (config & htonl(OFPPC_PORT_DOWN)) {
netdev_turn_flags_on(port->netdev, NETDEV_UP, true);
}
}
-#define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | \
- OFPPC_NO_FWD | OFPPC_NO_FLOOD)
- if (mask & htonl(REVALIDATE_BITS)) {
- COVERAGE_INC(ofproto_costly_flags);
- port->opp.config ^= mask & htonl(REVALIDATE_BITS);
- p->need_revalidate = true;
- }
-#undef REVALIDATE_BITS
- if (mask & htonl(OFPPC_NO_PACKET_IN)) {
- port->opp.config ^= htonl(OFPPC_NO_PACKET_IN);
+
+ port->opp.config ^= mask & (htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP |
+ OFPPC_NO_FLOOD | OFPPC_NO_FWD |
+ OFPPC_NO_PACKET_IN));
+ if (port->opp.config != old_config) {
+ port->ofproto->ofproto_class->port_reconfigured(port, old_config);
}
}
struct ofport *port;
int error;
- error = reject_slave_controller(ofconn, "OFPT_PORT_MOD");
+ error = reject_slave_controller(ofconn);
if (error) {
return error;
}
- port = get_port(p, ofp_port_to_odp_port(ntohs(opm->port_no)));
+ port = ofproto_get_port(p, ntohs(opm->port_no));
if (!port) {
return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT);
} else if (memcmp(port->opp.hw_addr, opm->hw_addr, OFP_ETH_ALEN)) {
return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR);
} else {
- update_port_config(p, port, opm->config, opm->mask);
+ update_port_config(port, opm->config, opm->mask);
if (opm->advertise) {
netdev_set_advertisements(port->netdev, ntohl(opm->advertise));
}
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
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);
static int
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);
- msg = start_ofp_stats_reply(request, sizeof *ots * 2);
+ 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]));
+ }
- /* 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 */
+ p->ofproto_class->get_tables(p, ots);
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));
}
static int
-handle_port_stats_request(struct ofconn *ofconn, const struct ofp_header *oh)
+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 = get_port(p, ofp_port_to_odp_port(ntohs(psr->port_no)));
+ port = ofproto_get_port(p, ntohs(psr->port_no));
if (port) {
- append_port_stat(port, ofconn, &msg);
+ 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;
}
*nsec = (msecs % 1000) * (1000 * 1000);
}
-static void
-calc_flow_duration(long long int start, ovs_be32 *sec_be, ovs_be32 *nsec_be)
-{
- uint32_t sec, nsec;
-
- 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)
+/* 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 int
+check_table_id(const struct ofproto *ofproto, uint8_t table_id)
{
- struct ofp_flow_stats *ofs;
- uint64_t packet_count, byte_count;
- ovs_be64 cookie;
- size_t act_len, len;
+ return (table_id == 0xff || table_id < ofproto->n_tables
+ ? 0
+ : ofp_mkerr_nicira(OFPET_BAD_REQUEST, NXBRC_BAD_TABLE_ID));
- if (rule_is_hidden(rule) || !rule_has_out_port(rule, out_port)) {
- return;
- }
-
- act_len = sizeof *rule->actions * rule->n_actions;
- len = offsetof(struct ofp_flow_stats, actions) + act_len;
-
- rule_get_stats(rule, &packet_count, &byte_count);
-
- 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);
- }
}
-static bool
-is_valid_table(uint8_t table_id)
+static struct classifier *
+first_matching_table(struct ofproto *ofproto, uint8_t table_id)
{
- if (table_id == 0 || table_id == 0xff) {
- return true;
+ if (table_id == 0xff) {
+ return &ofproto->tables[0];
+ } else if (table_id < ofproto->n_tables) {
+ return &ofproto->tables[table_id];
} else {
- /* It would probably be better to reply with an error but there doesn't
- * seem to be any appropriate value, so that might just be
- * confusing. */
- VLOG_WARN_RL(&rl, "controller asked for invalid table %"PRIu8,
- table_id);
- return false;
+ return NULL;
}
}
+static struct classifier *
+next_matching_table(struct ofproto *ofproto,
+ struct classifier *cls, uint8_t table_id)
+{
+ return (table_id == 0xff && cls != &ofproto->tables[ofproto->n_tables - 1]
+ ? cls + 1
+ : NULL);
+}
+
+/* Assigns CLS to each classifier table, in turn, that matches TABLE_ID in
+ * OFPROTO:
+ *
+ * - If TABLE_ID is 0xff, this iterates over every classifier table in
+ * OFPROTO.
+ *
+ * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
+ * only once, for that table.
+ *
+ * - Otherwise, TABLE_ID isn't valid for OFPROTO, so 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(CLS, TABLE_ID, OFPROTO) \
+ for ((CLS) = first_matching_table(OFPROTO, TABLE_ID); \
+ (CLS) != NULL; \
+ (CLS) = next_matching_table(OFPROTO, CLS, 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 int
-handle_flow_stats_request(struct ofconn *ofconn, const struct ofp_header *oh)
+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)
{
- const struct ofp_flow_stats_request *fsr = ofputil_stats_body(oh);
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- struct ofpbuf *reply;
+ struct classifier *cls;
+ int 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 (cls, 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, 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)
+/* 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 int
+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 nx_flow_stats *nfs;
- uint64_t packet_count, byte_count;
- size_t act_len, start_len;
- struct ofpbuf *reply;
+ struct classifier *cls;
+ 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_get_stats(rule, &packet_count, &byte_count);
-
- 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;
+ list_init(rules);
+ FOR_EACH_MATCHING_TABLE (cls, table_id, ofproto) {
+ struct rule *rule;
- 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(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;
}
static int
-handle_nxst_flow(struct ofconn *ofconn, const struct ofp_header *oh)
+handle_flow_stats_request(struct ofconn *ofconn,
+ const struct ofp_stats_msg *osm)
{
struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- struct nx_flow_stats_request *nfsr;
- struct cls_rule target;
- struct ofpbuf *reply;
- struct ofpbuf b;
+ struct ofputil_flow_stats_request fsr;
+ struct list replies;
+ struct list rules;
+ struct rule *rule;
int error;
- ofpbuf_use_const(&b, oh, ntohs(oh->length));
-
- /* 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);
+
+ error = collect_rules_loose(ofproto, fsr.table_id, &fsr.match,
+ fsr.cookie, fsr.cookie_mask,
+ fsr.out_port, &rules);
+ if (error) {
+ return error;
}
- 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;
+ ofputil_start_stats_reply(osm, &replies);
+ LIST_FOR_EACH (rule, ofproto_node, &rules) {
+ struct ofputil_flow_stats fs;
- cls_cursor_init(&cursor, &ofproto->cls, &target);
- CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
- put_nx_flow_stats(ofconn, rule, nfsr->out_port, &reply);
- }
+ fs.rule = rule->cr;
+ fs.cookie = rule->flow_cookie;
+ fs.table_id = rule->table_id;
+ calc_flow_duration__(rule->created, &fs.duration_sec,
+ &fs.duration_nsec);
+ fs.idle_timeout = rule->idle_timeout;
+ fs.hard_timeout = rule->hard_timeout;
+ 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_reply(ofconn, reply);
+ 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_get_stats(rule, &packet_count, &byte_count);
+ rule->ofproto->ofproto_class->rule_get_stats(rule,
+ &packet_count, &byte_count);
+ if (rule->table_id != 0) {
+ ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id);
+ }
ds_put_format(results, "duration=%llds, ",
(time_msec() - rule->created) / 1000);
- ds_put_format(results, "idle=%.3fs, ", (time_msec() - rule->used) / 1000.0);
ds_put_format(results, "priority=%u, ", rule->cr.priority);
ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
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 classifier *cls;
+
+ OFPROTO_FOR_EACH_TABLE (cls, p) {
+ struct cls_cursor cursor;
+ struct rule *rule;
- cls_cursor_init(&cursor, &p->cls, NULL);
- CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
- flow_stats_ds(rule, results);
+ cls_cursor_init(&cursor, cls, NULL);
+ CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
+ flow_stats_ds(rule, results);
+ }
}
}
ofproto_get_netflow_ids(const struct ofproto *ofproto,
uint8_t *engine_type, uint8_t *engine_id)
{
- dpif_get_netflow_ids(ofproto->dpif, engine_type, engine_id);
+ ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id);
}
-static void
-query_aggregate_stats(struct ofproto *ofproto, struct cls_rule *target,
- ovs_be16 out_port, uint8_t table_id,
- struct ofp_aggregate_stats_reply *oasr)
+/* Checks the fault status of CFM for 'ofp_port' within 'ofproto'. Returns 1
+ * if CFM is faulted (generally indiciating a connectivity problem), 0 if CFM
+ * is not faulted, and -1 if CFM is not enabled on 'ofp_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;
-
- 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;
+ struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
- ofputil_cls_rule_from_match(&request->match, 0, NXFF_OPENFLOW10, 0,
- &target);
-
- 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)
+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;
+ 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;
int 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)
+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);
HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
handle_queue_stats_for_port(port, queue_id, &cbdata);
}
- } else if (port_no < ofproto->max_ports) {
- port = get_port(ofproto, ofp_port_to_odp_port(port_no));
+ } else if (port_no < OFPP_MAX) {
+ port = ofproto_get_port(ofproto, port_no);
if (port) {
handle_queue_stats_for_port(port, queue_id, &cbdata);
}
} else {
- ofpbuf_delete(cbdata.msg);
+ ofpbuf_list_delete(&cbdata.replies);
return ofp_mkerr(OFPET_QUEUE_OP_FAILED, OFPQOFC_BAD_PORT);
}
- ofconn_send_reply(ofconn, cbdata.msg);
+ ofconn_send_replies(ofconn, &cbdata.replies);
return 0;
}
-/* Updates 'facet''s used time. Caller is responsible for calling
- * facet_push_stats() to update the flows which 'facet' resubmits into. */
-static void
-facet_update_time(struct ofproto *ofproto, struct facet *facet,
- long long int used)
-{
- if (used > facet->used) {
- facet->used = used;
- if (used > facet->rule->used) {
- facet->rule->used = used;
+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;
+ }
}
- netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, used);
- }
-}
-
-/* Folds the statistics from 'stats' into the counters in 'facet'.
- *
- * Because of the meaning of a facet's counters, it only makes sense to do this
- * if 'stats' are not tracked in the datapath, that is, if 'stats' represents a
- * packet that was sent by hand or if it represents statistics that have been
- * cleared out of the datapath. */
-static void
-facet_update_stats(struct ofproto *ofproto, struct facet *facet,
- const struct dpif_flow_stats *stats)
-{
- if (stats->n_packets || stats->used > facet->used) {
- facet_update_time(ofproto, facet, stats->used);
- facet->packet_count += stats->n_packets;
- facet->byte_count += stats->n_bytes;
- facet_push_stats(ofproto, facet);
- netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags);
- }
-}
-
-static void
-facet_push_stats(struct ofproto *ofproto, struct facet *facet)
-{
- uint64_t rs_packets, rs_bytes;
-
- assert(facet->packet_count >= facet->rs_packet_count);
- assert(facet->byte_count >= facet->rs_byte_count);
- assert(facet->used >= facet->rs_used);
-
- rs_packets = facet->packet_count - facet->rs_packet_count;
- rs_bytes = facet->byte_count - facet->rs_byte_count;
-
- if (rs_packets || rs_bytes || facet->used > facet->rs_used) {
- facet->rs_packet_count = facet->packet_count;
- facet->rs_byte_count = facet->byte_count;
- facet->rs_used = facet->used;
-
- flow_push_stats(ofproto, facet->rule, &facet->flow,
- rs_packets, rs_bytes, facet->used);
}
-}
-
-struct ofproto_push {
- struct action_xlate_ctx ctx;
- uint64_t packets;
- uint64_t bytes;
- long long int used;
-};
-
-static void
-push_resubmit(struct action_xlate_ctx *ctx, struct rule *rule)
-{
- struct ofproto_push *push = CONTAINER_OF(ctx, struct ofproto_push, ctx);
-
- if (rule) {
- rule->packet_count += push->packets;
- rule->byte_count += push->bytes;
- rule->used = MAX(push->used, rule->used);
- }
-}
-
-/* Pushes flow statistics to the rules which 'flow' resubmits into given
- * 'rule''s actions. */
-static void
-flow_push_stats(struct ofproto *ofproto, const struct rule *rule,
- struct flow *flow, uint64_t packets, uint64_t bytes,
- long long int used)
-{
- struct ofproto_push push;
- push.packets = packets;
- push.bytes = bytes;
- push.used = used;
-
- action_xlate_ctx_init(&push.ctx, ofproto, flow, NULL);
- push.ctx.resubmit_hook = push_resubmit;
- ofpbuf_delete(xlate_actions(&push.ctx, rule->actions, rule->n_actions));
+ 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 as encoded by ofp_mkerr() 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)
+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 classifier *table;
+ struct ofopgroup *group;
+ struct rule *victim;
struct rule *rule;
- uint16_t in_port;
int error;
- if (fm->flags & OFPFF_CHECK_OVERLAP
- && classifier_rule_overlaps(&p->cls, &fm->cr)) {
- return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP);
+ error = check_table_id(ofproto, fm->table_id);
+ if (error) {
+ return error;
}
- error = 0;
- if (fm->buffer_id != UINT32_MAX) {
- error = ofconn_pktbuf_retrieve(ofconn, fm->buffer_id,
- &packet, &in_port);
+ /* 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 {
- packet = NULL;
- in_port = UINT16_MAX;
+ return ofp_mkerr_nicira(OFPET_FLOW_MOD_FAILED, NXFMFC_BAD_TABLE_ID);
}
- rule = rule_create(&fm->cr, fm->actions, fm->n_actions,
- fm->idle_timeout, fm->hard_timeout, fm->cookie,
- fm->flags & OFPFF_SEND_FLOW_REM);
- rule_insert(p, rule);
- if (packet) {
- rule_execute(p, rule, in_port, packet);
+ /* Check for overlap, if requested. */
+ if (fm->flags & OFPFF_CHECK_OVERLAP
+ && classifier_rule_overlaps(table, &fm->cr)) {
+ return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP);
}
- return error;
-}
-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));
-}
+ /* Serialize against pending deletion. */
+ if (is_flow_deletion_pending(ofproto, &fm->cr, table - ofproto->tables)) {
+ return OFPROTO_POSTPONE;
+ }
-static int
-send_buffered_packet(struct ofconn *ofconn,
- struct rule *rule, uint32_t buffer_id)
-{
- struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
- struct ofpbuf *packet;
- uint16_t in_port;
- int error;
+ /* 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 = 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;
- if (buffer_id == UINT32_MAX) {
- return 0;
+ /* Insert new rule. */
+ victim = rule_from_cls_rule(classifier_replace(table, &rule->cr));
+ if (victim && victim->pending) {
+ error = OFPROTO_POSTPONE;
+ } else {
+ group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id);
+ ofoperation_create(group, rule, OFOPERATION_ADD);
+ rule->pending->victim = victim;
+
+ error = ofproto->ofproto_class->rule_construct(rule);
+ if (error) {
+ ofoperation_destroy(rule->pending);
+ }
+ ofopgroup_submit(group);
}
- error = ofconn_pktbuf_retrieve(ofconn, buffer_id, &packet, &in_port);
+ /* Back out if an error occurred. */
if (error) {
- return error;
+ if (victim) {
+ classifier_replace(table, &victim->cr);
+ } else {
+ classifier_remove(table, &rule->cr);
+ }
+ ofproto_rule_destroy__(rule);
}
-
- rule_execute(ofproto, rule, in_port, packet);
-
- return 0;
+ return error;
}
\f
/* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
-struct modify_flows_cbdata {
- struct ofproto *ofproto;
- const struct flow_mod *fm;
- struct rule *match;
-};
+/* Modifies the rules listed in 'rules', changing their actions to match those
+ * in '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 int
+modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofputil_flow_mod *fm,
+ const struct ofp_header *request, struct list *rules)
+{
+ struct ofopgroup *group;
+ struct rule *rule;
+
+ group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id);
+ LIST_FOR_EACH (rule, ofproto_node, rules) {
+ 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;
+ rule->ofproto->ofproto_class->rule_modify_actions(rule);
+ } else {
+ rule->modified = time_msec();
+ }
+ rule->flow_cookie = fm->cookie;
+ }
+ ofopgroup_submit(group);
-static int modify_flow(struct ofproto *, const struct flow_mod *,
- struct rule *);
+ return 0;
+}
/* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as
* encoded by ofp_mkerr() on failure.
*
- * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
+ * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
* if any. */
static int
-modify_flows_loose(struct ofconn *ofconn, struct flow_mod *fm)
+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 *match = NULL;
- struct cls_cursor cursor;
- struct rule *rule;
-
- cls_cursor_init(&cursor, &p->cls, &fm->cr);
- CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
- if (!rule_is_hidden(rule)) {
- match = rule;
- modify_flow(p, fm, rule);
- }
- }
+ struct list rules;
+ int error;
- 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);
- }
+ 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 OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
* code as encoded by ofp_mkerr() on failure.
*
- * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
+ * '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)
+modify_flow_strict(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)) {
- modify_flow(p, fm, rule);
- return send_buffered_packet(ofconn, rule, fm->buffer_id);
- } else {
- return add_flow(ofconn, fm);
- }
+ struct list rules;
+ int 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. */
-/* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has
- * been identified as a flow in 'p''s flow table to be modified, by changing
- * the rule's actions to match those in 'ofm' (which is followed by 'n_actions'
- * ofp_action[] structures). */
+/* Deletes the rules listed in 'rules'.
+ *
+ * Returns 0 on success, otherwise an OpenFlow error code. */
static int
-modify_flow(struct ofproto *p, const struct flow_mod *fm, struct rule *rule)
+delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofp_header *request, struct list *rules)
{
- size_t actions_len = fm->n_actions * sizeof *rule->actions;
+ struct rule *rule, *next;
+ struct ofopgroup *group;
- rule->flow_cookie = fm->cookie;
+ group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX);
+ LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) {
+ ofproto_rule_send_removed(rule, OFPRR_DELETE);
- /* If the actions are the same, do nothing. */
- if (fm->n_actions == rule->n_actions
- && (!fm->n_actions
- || !memcmp(fm->actions, rule->actions, actions_len))) {
- return 0;
+ ofoperation_create(group, rule, OFOPERATION_DELETE);
+ classifier_remove(&ofproto->tables[rule->table_id], &rule->cr);
+ rule->ofproto->ofproto_class->rule_destruct(rule);
}
-
- /* Replace actions. */
- free(rule->actions);
- rule->actions = fm->n_actions ? xmemdup(fm->actions, actions_len) : NULL;
- rule->n_actions = fm->n_actions;
-
- p->need_revalidate = true;
+ ofopgroup_submit(group);
return 0;
}
-\f
-/* OFPFC_DELETE implementation. */
-
-static void delete_flow(struct ofproto *, struct rule *, ovs_be16 out_port);
/* Implements OFPFC_DELETE. */
-static void
-delete_flows_loose(struct ofproto *p, const struct flow_mod *fm)
+static int
+delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofputil_flow_mod *fm,
+ const struct ofp_header *request)
{
- struct rule *rule, *next_rule;
- struct cls_cursor cursor;
+ struct list rules;
+ int error;
- cls_cursor_init(&cursor, &p->cls, &fm->cr);
- CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
- delete_flow(p, rule, htons(fm->out_port));
- }
+ 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);
}
/* Implements OFPFC_DELETE_STRICT. */
-static void
-delete_flow_strict(struct ofproto *p, struct flow_mod *fm)
+static int
+delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn,
+ const struct ofputil_flow_mod *fm,
+ const struct ofp_header *request)
{
- struct rule *rule = find_flow_strict(p, fm);
- if (rule) {
- delete_flow(p, rule, htons(fm->out_port));
- }
+ struct list rules;
+ int 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);
}
-/* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has
- * been identified as a flow to delete from 'p''s flow table, by deleting the
- * flow and sending out a OFPT_FLOW_REMOVED message to any interested
- * controller.
- *
- * Will not delete 'rule' if it is hidden. Will delete 'rule' only if
- * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the
- * specified 'out_port'. */
static void
-delete_flow(struct ofproto *p, struct rule *rule, ovs_be16 out_port)
+ofproto_rule_send_removed(struct rule *rule, uint8_t reason)
{
- if (rule_is_hidden(rule)) {
- return;
- }
+ struct ofputil_flow_removed fr;
- if (out_port != htons(OFPP_NONE) && !rule_has_out_port(rule, out_port)) {
+ if (rule_is_hidden(rule) || !rule->send_flow_removed) {
return;
}
- rule_send_removed(p, rule, OFPRR_DELETE);
- rule_remove(p, rule);
+ fr.rule = rule->cr;
+ fr.cookie = rule->flow_cookie;
+ fr.reason = reason;
+ calc_flow_duration__(rule->created, &fr.duration_sec, &fr.duration_nsec);
+ fr.idle_timeout = rule->idle_timeout;
+ rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count,
+ &fr.byte_count);
+
+ connmgr_send_flow_removed(rule->ofproto->connmgr, &fr);
+}
+
+/* Sends an OpenFlow "flow removed" message with the given 'reason' (either
+ * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
+ * ofproto.
+ *
+ * ofproto implementation ->run() functions should use this function to expire
+ * OpenFlow flows. */
+void
+ofproto_rule_expire(struct rule *rule, uint8_t reason)
+{
+ struct ofproto *ofproto = rule->ofproto;
+ struct ofopgroup *group;
+
+ assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT);
+
+ ofproto_rule_send_removed(rule, reason);
+
+ group = ofopgroup_create_unattached(ofproto);
+ ofoperation_create(group, rule, OFOPERATION_DELETE);
+ classifier_remove(&ofproto->tables[rule->table_id], &rule->cr);
+ rule->ofproto->ofproto_class->rule_destruct(rule);
+ ofopgroup_submit(group);
}
\f
static int
handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh)
{
- struct ofproto *p = ofconn_get_ofproto(ofconn);
- struct flow_mod fm;
+ struct ofputil_flow_mod fm;
int 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;
}
return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_ALL_TABLES_FULL);
}
- error = validate_actions(fm.actions, fm.n_actions,
- &fm.cr.flow, p->max_ports);
- if (error) {
- return error;
+ return handle_flow_mod__(ofconn_get_ofproto(ofconn), ofconn, &fm, oh);
+}
+
+static int
+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) {
+ 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:
+ if (fm->command > 0xff) {
+ VLOG_WARN_RL(&rl, "flow_mod has explicit table_id but "
+ "flow_mod_table_id extension is not enabled");
+ }
return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND);
}
}
-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
handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh)
{
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 ofp_mkerr_nicira(OFPET_BAD_REQUEST, 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
+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 int
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 {
+ if (format != NXFF_OPENFLOW10 && format != NXFF_NXM) {
+ return ofp_mkerr(OFPET_BAD_REQUEST, 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
+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 != NXFF_OPENFLOW10 && format != NXPIF_NXM) {
return ofp_mkerr(OFPET_BAD_REQUEST, 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 int
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;
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. */
+ /* 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);
+ return handle_queue_stats_request(ofconn, msg->data);
- case OFPUTIL_NXST_AGGREGATE_REQUEST:
- return handle_nxst_aggregate(ofconn, oh);
-
- 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);
} else {
}
}
-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
-static void
-handle_miss_upcall(struct ofproto *p, struct dpif_upcall *upcall)
-{
- struct facet *facet;
- struct flow flow;
-
- /* Obtain in_port and tun_id, at least. */
- odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
-
- /* Set header pointers in 'flow'. */
- flow_extract(upcall->packet, flow.tun_id, flow.in_port, &flow);
-
- /* Handle 802.1ag and LACP. */
- if (ofproto_process_special(p, &flow, upcall->packet)) {
- ofpbuf_delete(upcall->packet);
- return;
- }
-
- /* Check with in-band control to see if this packet should be sent
- * to the local port regardless of the flow table. */
- if (connmgr_msg_in_hook(p->connmgr, &flow, upcall->packet)) {
- ofproto_send_packet(p, ODPP_LOCAL, 0, upcall->packet);
- }
-
- facet = facet_lookup_valid(p, &flow);
- if (!facet) {
- struct rule *rule = rule_lookup(p, &flow);
- if (!rule) {
- /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
- struct ofport *port = get_port(p, flow.in_port);
- if (port) {
- if (port->opp.config & htonl(OFPPC_NO_PACKET_IN)) {
- COVERAGE_INC(ofproto_no_packet_in);
- /* XXX install 'drop' flow entry */
- ofpbuf_delete(upcall->packet);
- return;
- }
- } else {
- VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16,
- flow.in_port);
- }
-
- COVERAGE_INC(ofproto_packet_in);
- send_packet_in(p, upcall, &flow, false);
- return;
- }
-
- facet = facet_create(p, rule, &flow, upcall->packet);
- } else if (!facet->may_install) {
- /* The facet is not installable, that is, we need to process every
- * packet, so process the current packet's actions into 'facet'. */
- facet_make_actions(p, facet, upcall->packet);
- }
-
- if (facet->rule->cr.priority == FAIL_OPEN_PRIORITY) {
- /*
- * Extra-special case for fail-open mode.
- *
- * We are in fail-open mode and the packet matched the fail-open rule,
- * but we are connected to a controller too. We should send the packet
- * up to the controller in the hope that it will try to set up a flow
- * and thereby allow us to exit fail-open.
- *
- * See the top-level comment in fail-open.c for more information.
- */
- send_packet_in(p, upcall, &flow, true);
- }
-
- facet_execute(p, facet, upcall->packet);
- facet_install(p, facet, false);
-}
+/* Asynchronous operations. */
-static void
-handle_upcall(struct ofproto *p, struct dpif_upcall *upcall)
+/* 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 flow flow;
-
- switch (upcall->type) {
- case DPIF_UC_ACTION:
- COVERAGE_INC(ofproto_ctlr_action);
- odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
- send_packet_in(p, upcall, &flow, false);
- break;
-
- case DPIF_UC_SAMPLE:
- if (p->sflow) {
- odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
- ofproto_sflow_received(p->sflow, upcall, &flow);
- }
- ofpbuf_delete(upcall->packet);
- break;
-
- case DPIF_UC_MISS:
- handle_miss_upcall(p, upcall);
- break;
-
- case DPIF_N_UC_TYPES:
- default:
- VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32, upcall->type);
- break;
- }
+ 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;
}
-\f
-/* Flow expiration. */
-static int ofproto_dp_max_idle(const struct ofproto *);
-static void ofproto_update_stats(struct ofproto *);
-static void rule_expire(struct ofproto *, struct rule *);
-static void ofproto_expire_facets(struct ofproto *, int dp_max_idle);
-
-/* This function is called periodically by ofproto_run(). Its job is to
- * collect updates for the flows that have been installed into the datapath,
- * most importantly when they last were used, and then use that information to
- * expire flows that have not been used recently.
+/* Creates and returns a new ofopgroup for 'ofproto'.
*
- * Returns the number of milliseconds after which it should be called again. */
-static int
-ofproto_expire(struct ofproto *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 rule *rule, *next_rule;
- struct cls_cursor cursor;
- int dp_max_idle;
-
- /* Update stats for each flow in the datapath. */
- ofproto_update_stats(ofproto);
-
- /* Expire facets that have been idle too long. */
- dp_max_idle = ofproto_dp_max_idle(ofproto);
- ofproto_expire_facets(ofproto, dp_max_idle);
-
- /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
- cls_cursor_init(&cursor, &ofproto->cls, NULL);
- CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
- rule_expire(ofproto, rule);
- }
+ struct ofopgroup *group = ofopgroup_create_unattached(ofproto);
+ if (ofconn) {
+ size_t request_len = ntohs(request->length);
- /* All outstanding data in existing flows has been accounted, so it's a
- * good time to do bond rebalancing. */
- if (ofproto->has_bonded_bundles) {
- struct ofbundle *bundle;
+ assert(ofconn_get_ofproto(ofconn) == ofproto);
- HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
- if (bundle->bond) {
- bond_rebalance(bundle->bond, &ofproto->revalidate_set);
- }
- }
+ ofconn_add_opgroup(ofconn, &group->ofconn_node);
+ group->ofconn = ofconn;
+ group->request = xmemdup(request, MIN(request_len, 64));
+ group->buffer_id = buffer_id;
}
-
- return MIN(dp_max_idle, 1000);
+ return group;
}
-/* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
+/* Submits 'group' for processing.
*
- * This function also pushes statistics updates to rules which each facet
- * resubmits into. Generally these statistics will be accurate. However, if a
- * facet changes the rule it resubmits into at some time in between
- * ofproto_update_stats() runs, it is possible that statistics accrued to the
- * old rule will be incorrectly attributed to the new rule. This could be
- * avoided by calling ofproto_update_stats() whenever rules are created or
- * deleted. However, the performance impact of making so many calls to the
- * datapath do not justify the benefit of having perfectly accurate statistics.
- */
+ * 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
-ofproto_update_stats(struct ofproto *p)
+ofopgroup_submit(struct ofopgroup *group)
{
- const struct dpif_flow_stats *stats;
- struct dpif_flow_dump dump;
- const struct nlattr *key;
- size_t key_len;
-
- dpif_flow_dump_start(&dump, p->dpif);
- while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) {
- struct facet *facet;
- struct flow flow;
-
- if (odp_flow_key_to_flow(key, key_len, &flow)) {
- struct ds s;
-
- ds_init(&s);
- odp_flow_key_format(key, key_len, &s);
- VLOG_WARN_RL(&rl, "failed to convert ODP flow key to flow: %s",
- ds_cstr(&s));
- ds_destroy(&s);
-
- continue;
- }
- facet = facet_find(p, &flow);
-
- if (facet && facet->installed) {
-
- if (stats->n_packets >= facet->dp_packet_count) {
- facet->packet_count += stats->n_packets - facet->dp_packet_count;
- } else {
- VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
- }
-
- if (stats->n_bytes >= facet->dp_byte_count) {
- facet->byte_count += stats->n_bytes - facet->dp_byte_count;
- } else {
- VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
- }
-
- facet->dp_packet_count = stats->n_packets;
- facet->dp_byte_count = stats->n_bytes;
-
- facet_update_time(p, facet, stats->used);
- facet_account(p, facet, stats->n_bytes);
- facet_push_stats(p, facet);
- } else {
- /* There's a flow in the datapath that we know nothing about.
- * Delete it. */
- COVERAGE_INC(ofproto_unexpected_rule);
- dpif_flow_del(p->dpif, key, key_len, NULL);
- }
+ if (list_is_empty(&group->ops)) {
+ ofopgroup_destroy(group);
+ } else {
+ list_push_back(&group->ofproto->pending, &group->ofproto_node);
+ group->ofproto->n_pending++;
}
- dpif_flow_dump_done(&dump);
}
-/* Calculates and returns the number of milliseconds of idle time after which
- * facets should expire from the datapath and we should fold their statistics
- * into their parent rules in userspace. */
-static int
-ofproto_dp_max_idle(const struct ofproto *ofproto)
+static void
+ofopgroup_destroy(struct ofopgroup *group)
{
- /*
- * Idle time histogram.
- *
- * Most of the time a switch has a relatively small number of facets. When
- * this is the case we might as well keep statistics for all of them in
- * userspace and to cache them in the kernel datapath for performance as
- * well.
- *
- * As the number of facets increases, the memory required to maintain
- * statistics about them in userspace and in the kernel becomes
- * significant. However, with a large number of facets it is likely that
- * only a few of them are "heavy hitters" that consume a large amount of
- * bandwidth. At this point, only heavy hitters are worth caching in the
- * kernel and maintaining in userspaces; other facets we can discard.
- *
- * The technique used to compute the idle time is to build a histogram with
- * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each facet
- * that is installed in the kernel gets dropped in the appropriate bucket.
- * After the histogram has been built, we compute the cutoff so that only
- * the most-recently-used 1% of facets (but at least 1000 flows) are kept
- * cached. At least the most-recently-used bucket of facets is kept, so
- * actually an arbitrary number of facets can be kept in any given
- * expiration run (though the next run will delete most of those unless
- * they receive additional data).
- *
- * This requires a second pass through the facets, in addition to the pass
- * made by ofproto_update_stats(), because the former function never looks
- * at uninstallable facets.
- */
- enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) };
- enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
- int buckets[N_BUCKETS] = { 0 };
- struct facet *facet;
- int total, bucket;
- long long int now;
- int i;
-
- total = hmap_count(&ofproto->facets);
- if (total <= 1000) {
- return N_BUCKETS * BUCKET_WIDTH;
- }
-
- /* Build histogram. */
- now = time_msec();
- HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
- long long int idle = now - facet->used;
- int bucket = (idle <= 0 ? 0
- : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
- : (unsigned int) idle / BUCKET_WIDTH);
- buckets[bucket]++;
- }
-
- /* Find the first bucket whose flows should be expired. */
- for (bucket = 0; bucket < N_BUCKETS; bucket++) {
- if (buckets[bucket]) {
- int subtotal = 0;
- do {
- subtotal += buckets[bucket++];
- } while (bucket < N_BUCKETS && subtotal < MAX(1000, total / 100));
- break;
- }
+ 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 (VLOG_IS_DBG_ENABLED()) {
- struct ds s;
-
- ds_init(&s);
- ds_put_cstr(&s, "keep");
- for (i = 0; i < N_BUCKETS; i++) {
- if (i == bucket) {
- ds_put_cstr(&s, ", drop");
- }
- if (buckets[i]) {
- ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
- }
+ if (!list_is_empty(&group->ofconn_node)) {
+ list_remove(&group->ofconn_node);
+ if (group->error) {
+ ofconn_send_error(group->ofconn, group->request, group->error);
}
- VLOG_INFO("%s: %s (msec:count)", ofproto->name, ds_cstr(&s));
- ds_destroy(&s);
+ connmgr_retry(group->ofproto->connmgr);
}
-
- return bucket * BUCKET_WIDTH;
+ 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
-facet_active_timeout(struct ofproto *ofproto, struct facet *facet)
+ofoperation_create(struct ofopgroup *group, struct rule *rule,
+ enum ofoperation_type type)
{
- if (ofproto->netflow && !facet_is_controller_flow(facet) &&
- netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
- struct ofexpired expired;
+ struct ofoperation *op;
- if (facet->installed) {
- struct dpif_flow_stats stats;
+ assert(!rule->pending);
- facet_put__(ofproto, facet, facet->actions, facet->actions_len,
- &stats);
- facet_update_stats(ofproto, facet, &stats);
- }
+ 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;
- expired.flow = facet->flow;
- expired.packet_count = facet->packet_count;
- expired.byte_count = facet->byte_count;
- expired.used = facet->used;
- netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
+ if (type == OFOPERATION_DELETE) {
+ hmap_insert(&op->group->ofproto->deletions, &op->hmap_node,
+ cls_rule_hash(&rule->cr, rule->table_id));
}
}
static void
-ofproto_expire_facets(struct ofproto *ofproto, int dp_max_idle)
+ofoperation_destroy(struct ofoperation *op)
{
- long long int cutoff = time_msec() - dp_max_idle;
- struct facet *facet, *next_facet;
-
- HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) {
- facet_active_timeout(ofproto, facet);
- if (facet->used < cutoff) {
- facet_remove(ofproto, facet);
- }
- }
-}
+ struct ofopgroup *group = op->group;
-/* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
- * then delete it entirely. */
-static void
-rule_expire(struct ofproto *ofproto, struct rule *rule)
-{
- struct facet *facet, *next_facet;
- long long int now;
- uint8_t reason;
-
- /* Has 'rule' expired? */
- now = time_msec();
- if (rule->hard_timeout
- && now > rule->created + rule->hard_timeout * 1000) {
- reason = OFPRR_HARD_TIMEOUT;
- } else if (rule->idle_timeout && list_is_empty(&rule->facets)
- && now >rule->used + rule->idle_timeout * 1000) {
- reason = OFPRR_IDLE_TIMEOUT;
- } else {
- return;
+ if (op->rule) {
+ op->rule->pending = NULL;
}
-
- COVERAGE_INC(ofproto_expired);
-
- /* Update stats. (This is a no-op if the rule expired due to an idle
- * timeout, because that only happens when the rule has no facets left.) */
- LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
- facet_remove(ofproto, facet);
+ if (op->type == OFOPERATION_DELETE) {
+ hmap_remove(&group->ofproto->deletions, &op->hmap_node);
}
+ list_remove(&op->group_node);
+ free(op->actions);
+ free(op);
- /* Get rid of the rule. */
- if (!rule_is_hidden(rule)) {
- rule_send_removed(ofproto, rule, reason);
+ if (list_is_empty(&group->ops) && !list_is_empty(&group->ofproto_node)) {
+ ofopgroup_destroy(group);
}
- rule_remove(ofproto, rule);
}
-\f
-static void
-rule_send_removed(struct ofproto *p, struct rule *rule, uint8_t reason)
-{
- struct ofputil_flow_removed fr;
- if (!rule->send_flow_removed) {
- return;
+/* Indicates that 'op' completed with status 'error', which is either 0 to
+ * indicate success or an OpenFlow error code (constructed with
+ * e.g. ofp_mkerr()).
+ *
+ * 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, int error)
+{
+ struct ofopgroup *group = op->group;
+ struct rule *rule = op->rule;
+ struct ofproto *ofproto = rule->ofproto;
+ struct classifier *table = &ofproto->tables[rule->table_id];
+
+ assert(rule->pending == op);
+ assert(op->status < 0);
+ assert(error >= 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;
}
- fr.rule = rule->cr;
- fr.cookie = rule->flow_cookie;
- fr.reason = reason;
- calc_flow_duration__(rule->created, &fr.duration_sec, &fr.duration_nsec);
- fr.idle_timeout = rule->idle_timeout;
- fr.packet_count = rule->packet_count;
- fr.byte_count = rule->byte_count;
-
- connmgr_send_flow_removed(p->connmgr, &fr);
-}
+ switch (op->type) {
+ case OFOPERATION_ADD:
+ if (!error) {
+ if (op->victim) {
+ 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 {
+ if (op->victim) {
+ classifier_replace(table, &op->victim->cr);
+ op->victim = NULL;
+ } else {
+ classifier_remove(table, &rule->cr);
+ }
+ ofproto_rule_destroy__(rule);
+ }
+ op->victim = NULL;
+ break;
-/* Obtains statistics for 'rule' and stores them in '*packets' and '*bytes'.
- * The returned statistics include statistics for all of 'rule''s facets. */
-static void
-rule_get_stats(const struct rule *rule, uint64_t *packets, uint64_t *bytes)
-{
- uint64_t p, b;
- struct facet *facet;
+ case OFOPERATION_DELETE:
+ assert(!error);
+ ofproto_rule_destroy__(rule);
+ op->rule = NULL;
+ break;
- /* Start from historical data for 'rule' itself that are no longer tracked
- * in facets. This counts, for example, facets that have expired. */
- p = rule->packet_count;
- b = rule->byte_count;
+ 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;
- /* Add any statistics that are tracked by facets. This includes
- * statistical data recently updated by ofproto_update_stats() as well as
- * stats for packets that were executed "by hand" via dpif_execute(). */
- LIST_FOR_EACH (facet, list_node, &rule->facets) {
- p += facet->packet_count;
- b += facet->byte_count;
+ default:
+ NOT_REACHED();
}
-
- *packets = p;
- *bytes = b;
+ ofoperation_destroy(op);
}
-/* Given 'upcall', of type DPIF_UC_ACTION or DPIF_UC_MISS, sends an
- * OFPT_PACKET_IN message to each OpenFlow controller as necessary according to
- * their individual configurations.
- *
- * If 'clone' is true, the caller retains ownership of 'upcall->packet'.
- * Otherwise, ownership is transferred to this function. */
-static void
-send_packet_in(struct ofproto *ofproto, struct dpif_upcall *upcall,
- const struct flow *flow, bool clone)
+struct rule *
+ofoperation_get_victim(struct ofoperation *op)
{
- struct ofputil_packet_in pin;
-
- pin.packet = upcall->packet;
- pin.in_port = odp_port_to_ofp_port(flow->in_port);
- pin.reason = upcall->type == DPIF_UC_MISS ? OFPR_NO_MATCH : OFPR_ACTION;
- pin.buffer_id = 0; /* not yet known */
- pin.send_len = upcall->userdata;
- connmgr_send_packet_in(ofproto->connmgr, upcall, flow,
- clone ? NULL : upcall->packet);
+ assert(op->type == OFOPERATION_ADD);
+ return op->victim;
}
-
+\f
static uint64_t
pick_datapath_id(const struct ofproto *ofproto)
{
const struct ofport *port;
- port = get_port(ofproto, ODPP_LOCAL);
+ port = ofproto_get_port(ofproto, OFPP_LOCAL);
if (port) {
uint8_t ea[ETH_ADDR_LEN];
int error;
return eth_addr_to_uint64(ea);
}
\f
-static struct ofproto *
+/* unixctl commands. */
+
+struct ofproto *
ofproto_lookup(const char *name)
{
struct ofproto *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;
ds_destroy(&results);
}
-struct ofproto_trace {
- struct action_xlate_ctx ctx;
- struct flow flow;
- struct ds *result;
-};
-
static void
-trace_format_rule(struct ds *result, int level, const struct rule *rule)
+ofproto_unixctl_init(void)
{
- ds_put_char_multiple(result, '\t', level);
- if (!rule) {
- ds_put_cstr(result, "No match\n");
+ static bool registered;
+ if (registered) {
return;
}
+ registered = true;
- ds_put_format(result, "Rule: cookie=%#"PRIx64" ",
- ntohll(rule->flow_cookie));
- cls_rule_format(&rule->cr, result);
- ds_put_char(result, '\n');
-
- ds_put_char_multiple(result, '\t', level);
- ds_put_cstr(result, "OpenFlow ");
- ofp_print_actions(result, (const struct ofp_action_header *) rule->actions,
- rule->n_actions * sizeof *rule->actions);
- ds_put_char(result, '\n');
-}
-
-static void
-trace_format_flow(struct ds *result, int level, const char *title,
- struct ofproto_trace *trace)
-{
- ds_put_char_multiple(result, '\t', level);
- ds_put_format(result, "%s: ", title);
- if (flow_equal(&trace->ctx.flow, &trace->flow)) {
- ds_put_cstr(result, "unchanged");
- } else {
- flow_format(result, &trace->ctx.flow);
- trace->flow = trace->ctx.flow;
- }
- ds_put_char(result, '\n');
-}
-
-static void
-trace_resubmit(struct action_xlate_ctx *ctx, struct rule *rule)
-{
- struct ofproto_trace *trace = CONTAINER_OF(ctx, struct ofproto_trace, ctx);
- struct ds *result = trace->result;
-
- ds_put_char(result, '\n');
- trace_format_flow(result, ctx->recurse + 1, "Resubmitted flow", trace);
- trace_format_rule(result, ctx->recurse + 1, rule);
+ 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. */
-static void
-ofproto_unixctl_trace(struct unixctl_conn *conn, const char *args_,
- void *aux OVS_UNUSED)
+/* 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)
{
- char *dpname, *in_port_s, *tun_id_s, *packet_s;
- char *args = xstrdup(args_);
- char *save_ptr = NULL;
- struct ofproto *ofproto;
- struct ofpbuf packet;
- struct rule *rule;
- struct ds result;
- struct flow flow;
- uint16_t in_port;
- ovs_be64 tun_id;
- char *s;
-
- ofpbuf_init(&packet, strlen(args) / 2);
- ds_init(&result);
-
- dpname = strtok_r(args, " ", &save_ptr);
- tun_id_s = strtok_r(NULL, " ", &save_ptr);
- in_port_s = strtok_r(NULL, " ", &save_ptr);
- packet_s = strtok_r(NULL, "", &save_ptr); /* Get entire rest of line. */
- if (!dpname || !in_port_s || !packet_s) {
- unixctl_command_reply(conn, 501, "Bad command syntax");
- goto exit;
- }
-
- ofproto = ofproto_lookup(dpname);
- if (!ofproto) {
- unixctl_command_reply(conn, 501, "Unknown ofproto (use ofproto/list "
- "for help)");
- goto exit;
- }
-
- tun_id = htonll(strtoull(tun_id_s, NULL, 0));
- in_port = ofp_port_to_odp_port(atoi(in_port_s));
+ const struct classifier *cls;
- packet_s = ofpbuf_put_hex(&packet, packet_s, NULL);
- packet_s += strspn(packet_s, " ");
- if (*packet_s != '\0') {
- unixctl_command_reply(conn, 501, "Trailing garbage in command");
- goto exit;
- }
- if (packet.size < ETH_HEADER_LEN) {
- unixctl_command_reply(conn, 501, "Packet data too short for Ethernet");
- goto exit;
- }
-
- ds_put_cstr(&result, "Packet: ");
- s = ofp_packet_to_string(packet.data, packet.size, packet.size);
- ds_put_cstr(&result, s);
- free(s);
-
- flow_extract(&packet, tun_id, in_port, &flow);
- ds_put_cstr(&result, "Flow: ");
- flow_format(&result, &flow);
- ds_put_char(&result, '\n');
+ free(ofproto->vlan_bitmap);
+ ofproto->vlan_bitmap = bitmap_allocate(4096);
+ ofproto->vlans_changed = false;
- rule = rule_lookup(ofproto, &flow);
- trace_format_rule(&result, 0, rule);
- if (rule) {
- struct ofproto_trace trace;
- struct ofpbuf *odp_actions;
+ OFPROTO_FOR_EACH_TABLE (cls, ofproto) {
+ const struct cls_table *table;
- trace.result = &result;
- trace.flow = flow;
- action_xlate_ctx_init(&trace.ctx, ofproto, &flow, &packet);
- trace.ctx.resubmit_hook = trace_resubmit;
- odp_actions = xlate_actions(&trace.ctx,
- rule->actions, rule->n_actions);
+ HMAP_FOR_EACH (table, hmap_node, &cls->tables) {
+ if ((table->wc.vlan_tci_mask & htons(VLAN_VID_MASK))
+ == htons(VLAN_VID_MASK)) {
+ const struct cls_rule *rule;
- ds_put_char(&result, '\n');
- trace_format_flow(&result, 0, "Final flow", &trace);
- ds_put_cstr(&result, "Datapath actions: ");
- format_odp_actions(&result, odp_actions->data, odp_actions->size);
- ofpbuf_delete(odp_actions);
+ 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);
+ }
+ }
+ }
}
+}
- unixctl_command_reply(conn, 200, ds_cstr(&result));
-
-exit:
- ds_destroy(&result);
- ofpbuf_uninit(&packet);
- free(args);
+/* 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;
}
-static void
-ofproto_unixctl_fdb_show(struct unixctl_conn *conn,
- const char *args, void *aux OVS_UNUSED)
+/* 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 ds ds = DS_EMPTY_INITIALIZER;
- const struct ofproto *ofproto;
- const struct mac_entry *e;
+ struct ofport *ofport;
+ int error;
- ofproto = ofproto_lookup(args);
- if (!ofproto) {
- unixctl_command_reply(conn, 501, "no such bridge");
- return;
- }
+ assert(vlandev_ofp_port != realdev_ofp_port);
- ds_put_cstr(&ds, " port VLAN MAC Age\n");
- LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
- struct ofbundle *bundle = e->port.p;
- ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n",
- ofbundle_get_a_port(bundle)->odp_port,
- e->vlan, ETH_ADDR_ARGS(e->mac), mac_entry_age(e));
+ 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;
}
- unixctl_command_reply(conn, 200, ds_cstr(&ds));
- ds_destroy(&ds);
-}
-static void
-ofproto_unixctl_init(void)
-{
- static bool registered;
- if (registered) {
- return;
+ if (!ofproto->ofproto_class->set_realdev) {
+ if (!vlandev_ofp_port) {
+ return 0;
+ }
+ VLOG_WARN("%s: vlan splinters not supported", ofproto->name);
+ return EOPNOTSUPP;
}
- registered = true;
- unixctl_command_register("ofproto/list", ofproto_unixctl_list, NULL);
- unixctl_command_register("ofproto/trace", ofproto_unixctl_trace, NULL);
- unixctl_command_register("fdb/show", ofproto_unixctl_fdb_show, NULL);
+ 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