X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=ofproto%2Fofproto.c;fp=ofproto%2Fofproto.c;h=bfcae57a1b27aa89b67832e816aaff5a3663fa22;hb=007948177581f3b3dad188221593d0e4bdca6ba0;hp=4ed29143709fcf80e42b159e49212f9cdd9820bd;hpb=2db65bf72c008cf7ee658d0b44744b39495ead14;p=sliver-openvswitch.git diff --git a/ofproto/ofproto.c b/ofproto/ofproto.c index 4ed291437..bfcae57a1 100644 --- a/ofproto/ofproto.c +++ b/ofproto/ofproto.c @@ -19,423 +19,266 @@ #include "ofproto.h" #include #include -#include -#include -#include #include #include -#include "autopath.h" #include "byte-order.h" -#include "cfm.h" #include "classifier.h" #include "connmgr.h" #include "coverage.h" -#include "dpif.h" #include "dynamic-string.h" -#include "fail-open.h" #include "hash.h" #include "hmap.h" -#include "in-band.h" -#include "mac-learning.h" -#include "multipath.h" #include "netdev.h" -#include "netflow.h" -#include "netlink.h" #include "nx-match.h" -#include "odp-util.h" #include "ofp-print.h" #include "ofp-util.h" -#include "ofproto-sflow.h" #include "ofpbuf.h" #include "openflow/nicira-ext.h" #include "openflow/openflow.h" -#include "openvswitch/datapath-protocol.h" #include "packets.h" #include "pinsched.h" #include "pktbuf.h" #include "poll-loop.h" -#include "rconn.h" +#include "private.h" #include "shash.h" #include "sset.h" -#include "stream-ssl.h" -#include "tag.h" -#include "timer.h" #include "timeval.h" #include "unaligned.h" #include "unixctl.h" -#include "vconn.h" #include "vlog.h" VLOG_DEFINE_THIS_MODULE(ofproto); -COVERAGE_DEFINE(facet_changed_rule); -COVERAGE_DEFINE(facet_revalidate); -COVERAGE_DEFINE(odp_overflow); COVERAGE_DEFINE(ofproto_agg_request); -COVERAGE_DEFINE(ofproto_costly_flags); -COVERAGE_DEFINE(ofproto_ctlr_action); -COVERAGE_DEFINE(ofproto_del_rule); COVERAGE_DEFINE(ofproto_error); -COVERAGE_DEFINE(ofproto_expiration); -COVERAGE_DEFINE(ofproto_expired); COVERAGE_DEFINE(ofproto_flows_req); COVERAGE_DEFINE(ofproto_flush); -COVERAGE_DEFINE(ofproto_invalidated); COVERAGE_DEFINE(ofproto_no_packet_in); -COVERAGE_DEFINE(ofproto_ofp2odp); -COVERAGE_DEFINE(ofproto_packet_in); COVERAGE_DEFINE(ofproto_packet_out); COVERAGE_DEFINE(ofproto_queue_req); COVERAGE_DEFINE(ofproto_recv_openflow); COVERAGE_DEFINE(ofproto_reinit_ports); -COVERAGE_DEFINE(ofproto_unexpected_rule); COVERAGE_DEFINE(ofproto_uninstallable); COVERAGE_DEFINE(ofproto_update_port); -/* Maximum depth of flow table recursion (due to NXAST_RESUBMIT actions) in a - * flow translation. */ -#define MAX_RESUBMIT_RECURSION 16 +static void ofport_destroy__(struct ofport *); +static void ofport_destroy(struct ofport *); -struct rule; +static int rule_create(struct ofproto *, const struct cls_rule *, + const union ofp_action *, size_t n_actions, + uint16_t idle_timeout, uint16_t hard_timeout, + ovs_be64 flow_cookie, bool send_flow_removed, + struct rule **rulep); -struct ofport { - struct hmap_node hmap_node; /* In struct ofproto's "ports" hmap. */ - struct netdev *netdev; - struct ofp_phy_port opp; /* In host byte order. */ - uint16_t odp_port; - struct cfm *cfm; /* Connectivity Fault Management, if any. */ -}; +static uint64_t pick_datapath_id(const struct ofproto *); +static uint64_t pick_fallback_dpid(void); -static void ofport_free(struct ofport *); -static void ofport_run(struct ofproto *, struct ofport *); -static void ofport_wait(struct ofport *); +static void ofproto_destroy__(struct ofproto *); +static void ofproto_flush_flows__(struct ofproto *); -struct action_xlate_ctx { -/* action_xlate_ctx_init() initializes these members. */ +static void ofproto_rule_destroy__(struct rule *); +static void ofproto_rule_send_removed(struct rule *, uint8_t reason); - /* The ofproto. */ - struct ofproto *ofproto; +static void handle_openflow(struct ofconn *, struct ofpbuf *); - /* Flow to which the OpenFlow actions apply. xlate_actions() will modify - * this flow when actions change header fields. */ - struct flow flow; +static void update_port(struct ofproto *, const char *devname); +static int init_ports(struct ofproto *); +static void reinit_ports(struct ofproto *); - /* The packet corresponding to 'flow', or a null pointer if we are - * revalidating without a packet to refer to. */ - const struct ofpbuf *packet; +static void ofproto_unixctl_init(void); - /* If nonnull, called just before executing a resubmit action. - * - * This is normally null so the client has to set it manually after - * calling action_xlate_ctx_init(). */ - void (*resubmit_hook)(struct action_xlate_ctx *, struct rule *); +/* All registered ofproto classes, in probe order. */ +static const struct ofproto_class **ofproto_classes; +static size_t n_ofproto_classes; +static size_t allocated_ofproto_classes; - /* If true, the speciality of 'flow' should be checked before executing - * its actions. If special_cb returns false on 'flow' rendered - * uninstallable and no actions will be executed. */ - bool check_special; +/* Map from datapath name to struct ofproto, for use by unixctl commands. */ +static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); -/* xlate_actions() initializes and uses these members. The client might want - * to look at them after it returns. */ +static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); - struct ofpbuf *odp_actions; /* Datapath actions. */ - tag_type tags; /* Tags associated with OFPP_NORMAL actions. */ - bool may_set_up_flow; /* True ordinarily; false if the actions must - * be reassessed for every packet. */ - uint16_t nf_output_iface; /* Output interface index for NetFlow. */ +static void +ofproto_initialize(void) +{ + static bool inited; -/* xlate_actions() initializes and uses these members, but the client has no - * reason to look at them. */ + if (!inited) { + inited = true; + ofproto_class_register(&ofproto_dpif_class); + } +} - int recurse; /* Recursion level, via xlate_table_action. */ - int last_pop_priority; /* Offset in 'odp_actions' just past most - * recent ODP_ACTION_ATTR_SET_PRIORITY. */ -}; +/* 'type' should be a normalized datapath type, as returned by + * ofproto_normalize_type(). Returns the corresponding ofproto_class + * structure, or a null pointer if there is none registered for 'type'. */ +static const struct ofproto_class * +ofproto_class_find__(const char *type) +{ + size_t i; -static void action_xlate_ctx_init(struct action_xlate_ctx *, - struct ofproto *, const struct flow *, - const struct ofpbuf *); -static struct ofpbuf *xlate_actions(struct action_xlate_ctx *, - const union ofp_action *in, size_t n_in); - -/* An OpenFlow flow. */ -struct rule { - long long int used; /* Time last used; time created if not used. */ - long long int created; /* Creation time. */ - - /* These statistics: - * - * - Do include packets and bytes from facets that have been deleted or - * whose own statistics have been folded into the rule. - * - * - Do include packets and bytes sent "by hand" that were accounted to - * the rule without any facet being involved (this is a rare corner - * case in rule_execute()). - * - * - Do not include packet or bytes that can be obtained from any facet's - * packet_count or byte_count member or that can be obtained from the - * datapath by, e.g., dpif_flow_get() for any facet. - */ - uint64_t packet_count; /* Number of packets received. */ - uint64_t byte_count; /* Number of bytes received. */ - - ovs_be64 flow_cookie; /* Controller-issued identifier. */ - - struct cls_rule cr; /* In owning ofproto's classifier. */ - uint16_t idle_timeout; /* In seconds from time of last use. */ - uint16_t hard_timeout; /* In seconds from time of creation. */ - bool send_flow_removed; /* Send a flow removed message? */ - int n_actions; /* Number of elements in actions[]. */ - union ofp_action *actions; /* OpenFlow actions. */ - struct list facets; /* List of "struct facet"s. */ -}; + ofproto_initialize(); + for (i = 0; i < n_ofproto_classes; i++) { + const struct ofproto_class *class = ofproto_classes[i]; + struct sset types; + bool found; -static struct rule *rule_from_cls_rule(const struct cls_rule *); -static bool rule_is_hidden(const struct rule *); - -static struct rule *rule_create(const struct cls_rule *, - const union ofp_action *, size_t n_actions, - uint16_t idle_timeout, uint16_t hard_timeout, - ovs_be64 flow_cookie, bool send_flow_removed); -static void rule_destroy(struct ofproto *, struct rule *); -static void rule_free(struct rule *); - -static struct rule *rule_lookup(struct ofproto *, const struct flow *); -static void rule_insert(struct ofproto *, struct rule *); -static void rule_remove(struct ofproto *, struct rule *); - -static void rule_send_removed(struct ofproto *, struct rule *, uint8_t reason); -static void rule_get_stats(const struct rule *, uint64_t *packets, - uint64_t *bytes); - -/* An exact-match instantiation of an OpenFlow flow. */ -struct facet { - long long int used; /* Time last used; time created if not used. */ - - /* These statistics: - * - * - Do include packets and bytes sent "by hand", e.g. with - * dpif_execute(). - * - * - Do include packets and bytes that were obtained from the datapath - * when a flow was deleted (e.g. dpif_flow_del()) or when its - * statistics were reset (e.g. dpif_flow_put() with - * DPIF_FP_ZERO_STATS). - * - * - Do not include any packets or bytes that can currently be obtained - * from the datapath by, e.g., dpif_flow_get(). - */ - uint64_t packet_count; /* Number of packets received. */ - uint64_t byte_count; /* Number of bytes received. */ - - uint64_t dp_packet_count; /* Last known packet count in the datapath. */ - uint64_t dp_byte_count; /* Last known byte count in the datapath. */ - - uint64_t rs_packet_count; /* Packets pushed to resubmit children. */ - uint64_t rs_byte_count; /* Bytes pushed to resubmit children. */ - long long int rs_used; /* Used time pushed to resubmit children. */ - - /* Number of bytes passed to account_cb. This may include bytes that can - * currently obtained from the datapath (thus, it can be greater than - * byte_count). */ - uint64_t accounted_bytes; - - struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */ - struct list list_node; /* In owning rule's 'facets' list. */ - struct rule *rule; /* Owning rule. */ - struct flow flow; /* Exact-match flow. */ - bool installed; /* Installed in datapath? */ - bool may_install; /* True ordinarily; false if actions must - * be reassessed for every packet. */ - size_t actions_len; /* Number of bytes in actions[]. */ - struct nlattr *actions; /* Datapath actions. */ - tag_type tags; /* Tags (set only by hooks). */ - struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */ -}; + sset_init(&types); + class->enumerate_types(&types); + found = sset_contains(&types, type); + sset_destroy(&types); -static struct facet *facet_create(struct ofproto *, struct rule *, - const struct flow *, - const struct ofpbuf *packet); -static void facet_remove(struct ofproto *, struct facet *); -static void facet_free(struct facet *); - -static struct facet *facet_lookup_valid(struct ofproto *, const struct flow *); -static bool facet_revalidate(struct ofproto *, struct facet *); - -static void facet_install(struct ofproto *, struct facet *, bool zero_stats); -static void facet_uninstall(struct ofproto *, struct facet *); -static void facet_flush_stats(struct ofproto *, struct facet *); - -static void facet_make_actions(struct ofproto *, struct facet *, - const struct ofpbuf *packet); -static void facet_reset_dp_stats(struct facet *, struct dpif_flow_stats *); -static void facet_update_stats(struct ofproto *, struct facet *, - const struct dpif_flow_stats *); -static void facet_push_stats(struct ofproto *, struct facet *); - -static void send_packet_in(struct ofproto *, struct dpif_upcall *, - const struct flow *, bool clone); - -struct ofproto { - /* Settings. */ - uint64_t datapath_id; /* Datapath ID. */ - uint64_t fallback_dpid; /* Datapath ID if no better choice found. */ - char *mfr_desc; /* Manufacturer. */ - char *hw_desc; /* Hardware. */ - char *sw_desc; /* Software version. */ - char *serial_desc; /* Serial number. */ - char *dp_desc; /* Datapath description. */ - - /* Datapath. */ - struct dpif *dpif; - struct netdev_monitor *netdev_monitor; - struct hmap ports; /* Contains "struct ofport"s. */ - struct shash port_by_name; - uint32_t max_ports; - - /* Configuration. */ - struct netflow *netflow; - struct ofproto_sflow *sflow; - - /* Flow table. */ - struct classifier cls; - struct timer next_expiration; - - /* Facets. */ - struct hmap facets; - bool need_revalidate; - struct tag_set revalidate_set; - - /* OpenFlow connections. */ - struct connmgr *connmgr; - - /* Hooks for ovs-vswitchd. */ - const struct ofhooks *ofhooks; - void *aux; - - /* Used by default ofhooks. */ - struct mac_learning *ml; -}; + if (found) { + return class; + } + } + VLOG_WARN("unknown datapath type %s", type); + return NULL; +} -/* Map from dpif name to struct ofproto, for use by unixctl commands. */ -static struct shash all_ofprotos = SHASH_INITIALIZER(&all_ofprotos); +/* Registers a new ofproto class. After successful registration, new ofprotos + * of that type can be created using ofproto_create(). */ +int +ofproto_class_register(const struct ofproto_class *new_class) +{ + size_t i; -static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); + for (i = 0; i < n_ofproto_classes; i++) { + if (ofproto_classes[i] == new_class) { + return EEXIST; + } + } -static const struct ofhooks default_ofhooks; + if (n_ofproto_classes >= allocated_ofproto_classes) { + ofproto_classes = x2nrealloc(ofproto_classes, + &allocated_ofproto_classes, + sizeof *ofproto_classes); + } + ofproto_classes[n_ofproto_classes++] = new_class; + return 0; +} -static uint64_t pick_datapath_id(const struct ofproto *); -static uint64_t pick_fallback_dpid(void); +/* Unregisters a datapath provider. 'type' must have been previously + * registered and not currently be in use by any ofprotos. After + * unregistration new datapaths of that type cannot be opened using + * ofproto_create(). */ +int +ofproto_class_unregister(const struct ofproto_class *class) +{ + size_t i; -static void ofproto_flush_flows__(struct ofproto *); -static int ofproto_expire(struct ofproto *); -static void flow_push_stats(struct ofproto *, const struct rule *, - struct flow *, uint64_t packets, uint64_t bytes, - long long int used); + for (i = 0; i < n_ofproto_classes; i++) { + if (ofproto_classes[i] == class) { + for (i++; i < n_ofproto_classes; i++) { + ofproto_classes[i - 1] = ofproto_classes[i]; + } + n_ofproto_classes--; + return 0; + } + } + VLOG_WARN("attempted to unregister an ofproto class that is not " + "registered"); + return EAFNOSUPPORT; +} -static void handle_upcall(struct ofproto *, struct dpif_upcall *); +/* Clears 'types' and enumerates all registered ofproto types into it. The + * caller must first initialize the sset. */ +void +ofproto_enumerate_types(struct sset *types) +{ + size_t i; -static void handle_openflow(struct ofconn *, struct ofpbuf *); + ofproto_initialize(); + for (i = 0; i < n_ofproto_classes; i++) { + ofproto_classes[i]->enumerate_types(types); + } +} -static struct ofport *get_port(const struct ofproto *, uint16_t odp_port); -static void update_port(struct ofproto *, const char *devname); -static int init_ports(struct ofproto *); -static void reinit_ports(struct ofproto *); +/* Returns the fully spelled out name for the given ofproto 'type'. + * + * Normalized type string can be compared with strcmp(). Unnormalized type + * string might be the same even if they have different spellings. */ +const char * +ofproto_normalize_type(const char *type) +{ + return type && type[0] ? type : "system"; +} -static void ofproto_unixctl_init(void); +/* Clears 'names' and enumerates the names of all known created ofprotos with + * the given 'type'. The caller must first initialize the sset. Returns 0 if + * successful, otherwise a positive errno value. + * + * Some kinds of datapaths might not be practically enumerable. This is not + * considered an error. */ +int +ofproto_enumerate_names(const char *type, struct sset *names) +{ + const struct ofproto_class *class = ofproto_class_find__(type); + return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; + } int -ofproto_create(const char *datapath, const char *datapath_type, - const struct ofhooks *ofhooks, void *aux, +ofproto_create(const char *datapath_name, const char *datapath_type, struct ofproto **ofprotop) { - char local_name[IF_NAMESIZE]; - struct ofproto *p; - struct dpif *dpif; + const struct ofproto_class *class; + struct ofproto *ofproto; int error; *ofprotop = NULL; + ofproto_initialize(); ofproto_unixctl_init(); - /* Connect to datapath and start listening for messages. */ - error = dpif_open(datapath, datapath_type, &dpif); - if (error) { - VLOG_ERR("failed to open datapath %s: %s", datapath, strerror(error)); - return error; - } - error = dpif_recv_set_mask(dpif, - ((1u << DPIF_UC_MISS) | - (1u << DPIF_UC_ACTION) | - (1u << DPIF_UC_SAMPLE))); - if (error) { - VLOG_ERR("failed to listen on datapath %s: %s", - datapath, strerror(error)); - dpif_close(dpif); - return error; + datapath_type = ofproto_normalize_type(datapath_type); + class = ofproto_class_find__(datapath_type); + if (!class) { + VLOG_WARN("could not create datapath %s of unknown type %s", + datapath_name, datapath_type); + return EAFNOSUPPORT; } - dpif_flow_flush(dpif); - dpif_recv_purge(dpif); - error = dpif_port_get_name(dpif, ODPP_LOCAL, - local_name, sizeof local_name); + ofproto = class->alloc(); + if (!ofproto) { + VLOG_ERR("failed to allocate datapath %s of type %s", + datapath_name, datapath_type); + return ENOMEM; + } + + /* Initialize. */ + memset(ofproto, 0, sizeof *ofproto); + ofproto->ofproto_class = class; + ofproto->name = xstrdup(datapath_name); + ofproto->type = xstrdup(datapath_type); + hmap_insert(&all_ofprotos, &ofproto->hmap_node, + hash_string(ofproto->name, 0)); + ofproto->datapath_id = 0; + ofproto->fallback_dpid = pick_fallback_dpid(); + ofproto->mfr_desc = xstrdup(DEFAULT_MFR_DESC); + ofproto->hw_desc = xstrdup(DEFAULT_HW_DESC); + ofproto->sw_desc = xstrdup(DEFAULT_SW_DESC); + ofproto->serial_desc = xstrdup(DEFAULT_SERIAL_DESC); + ofproto->dp_desc = xstrdup(DEFAULT_DP_DESC); + ofproto->netdev_monitor = netdev_monitor_create(); + hmap_init(&ofproto->ports); + shash_init(&ofproto->port_by_name); + ofproto->tables = NULL; + ofproto->n_tables = 0; + ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); + + error = ofproto->ofproto_class->construct(ofproto); if (error) { - VLOG_ERR("%s: cannot get name of datapath local port (%s)", - datapath, strerror(error)); + VLOG_ERR("failed to open datapath %s: %s", + datapath_name, strerror(error)); + ofproto_destroy__(ofproto); return error; } + assert(ofproto->n_tables > 0); - /* Initialize settings. */ - p = xzalloc(sizeof *p); - p->fallback_dpid = pick_fallback_dpid(); - p->datapath_id = p->fallback_dpid; - p->mfr_desc = xstrdup(DEFAULT_MFR_DESC); - p->hw_desc = xstrdup(DEFAULT_HW_DESC); - p->sw_desc = xstrdup(DEFAULT_SW_DESC); - p->serial_desc = xstrdup(DEFAULT_SERIAL_DESC); - p->dp_desc = xstrdup(DEFAULT_DP_DESC); - - /* Initialize datapath. */ - p->dpif = dpif; - p->netdev_monitor = netdev_monitor_create(); - hmap_init(&p->ports); - shash_init(&p->port_by_name); - p->max_ports = dpif_get_max_ports(dpif); - - /* Initialize submodules. */ - p->netflow = NULL; - p->sflow = NULL; - - /* Initialize flow table. */ - classifier_init(&p->cls); - timer_set_duration(&p->next_expiration, 1000); - - /* Initialize facet table. */ - hmap_init(&p->facets); - p->need_revalidate = false; - tag_set_init(&p->revalidate_set); - - /* Initialize hooks. */ - if (ofhooks) { - p->ofhooks = ofhooks; - p->aux = aux; - p->ml = NULL; - } else { - p->ofhooks = &default_ofhooks; - p->aux = p; - p->ml = mac_learning_create(); - } - - /* Pick final datapath ID. */ - p->datapath_id = pick_datapath_id(p); - VLOG_INFO("using datapath ID %016"PRIx64, p->datapath_id); + ofproto->datapath_id = pick_datapath_id(ofproto); + VLOG_INFO("using datapath ID %016"PRIx64, ofproto->datapath_id); + init_ports(ofproto); - shash_add_once(&all_ofprotos, dpif_name(p->dpif), p); - - /* Initialize OpenFlow connections. */ - p->connmgr = connmgr_create(p, datapath, local_name); - - *ofprotop = p; + *ofprotop = ofproto; return 0; } @@ -555,121 +398,183 @@ int 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; } } /* Connectivity Fault Management configuration. */ -/* Clears the CFM configuration from 'port_no' on 'ofproto'. */ +/* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ void -ofproto_iface_clear_cfm(struct ofproto *ofproto, uint32_t port_no) +ofproto_port_clear_cfm(struct ofproto *ofproto, uint16_t ofp_port) { - struct ofport *ofport = get_port(ofproto, port_no); - if (ofport && ofport->cfm){ - cfm_destroy(ofport->cfm); - ofport->cfm = NULL; + struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); + if (ofport && ofproto->ofproto_class->set_cfm) { + ofproto->ofproto_class->set_cfm(ofport, NULL, NULL, 0); } } -/* Configures connectivity fault management on 'port_no' in 'ofproto'. Takes +/* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes * basic configuration from the configuration members in 'cfm', and the set of * remote maintenance points from the 'n_remote_mps' elements in 'remote_mps'. * Ignores the statistics members of 'cfm'. * - * This function has no effect if 'ofproto' does not have a port 'port_no'. */ + * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ void -ofproto_iface_set_cfm(struct ofproto *ofproto, uint32_t port_no, - const struct cfm *cfm, - const uint16_t *remote_mps, size_t n_remote_mps) +ofproto_port_set_cfm(struct ofproto *ofproto, uint16_t ofp_port, + const struct cfm *cfm, + const uint16_t *remote_mps, size_t n_remote_mps) { struct ofport *ofport; + int error; - ofport = get_port(ofproto, port_no); + ofport = ofproto_get_port(ofproto, ofp_port); if (!ofport) { - VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu32, - dpif_name(ofproto->dpif), port_no); + VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, + ofproto->name, ofp_port); return; } - if (!ofport->cfm) { - ofport->cfm = cfm_create(); + error = (ofproto->ofproto_class->set_cfm + ? ofproto->ofproto_class->set_cfm(ofport, cfm, + remote_mps, n_remote_mps) + : EOPNOTSUPP); + if (error) { + VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", + ofproto->name, ofp_port, netdev_get_name(ofport->netdev), + strerror(error)); } +} - ofport->cfm->mpid = cfm->mpid; - ofport->cfm->interval = cfm->interval; - memcpy(ofport->cfm->maid, cfm->maid, CCM_MAID_LEN); +/* Returns the connectivity fault management object associated with 'ofp_port' + * within 'ofproto', or a null pointer if 'ofproto' does not have a port + * 'ofp_port' or if that port does not have CFM configured. The caller must + * not modify or destroy the returned object. */ +const struct cfm * +ofproto_port_get_cfm(struct ofproto *ofproto, uint16_t ofp_port) +{ + struct ofport *ofport; + const struct cfm *cfm; - cfm_update_remote_mps(ofport->cfm, remote_mps, n_remote_mps); + ofport = ofproto_get_port(ofproto, ofp_port); + return (ofport + && ofproto->ofproto_class->get_cfm + && !ofproto->ofproto_class->get_cfm(ofport, &cfm)) ? cfm : NULL; +} - if (!cfm_configure(ofport->cfm)) { - VLOG_WARN("%s: CFM configuration on port %"PRIu32" (%s) failed", - dpif_name(ofproto->dpif), port_no, - netdev_get_name(ofport->netdev)); - cfm_destroy(ofport->cfm); - ofport->cfm = NULL; - } +/* Checks the status of LACP negotiation for 'ofp_port' within ofproto. + * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, + * 0 if LACP partner information is not current (generally indicating a + * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ +int +ofproto_port_is_lacp_current(struct ofproto *ofproto, uint16_t ofp_port) +{ + struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); + return (ofport && ofproto->ofproto_class->port_is_lacp_current + ? ofproto->ofproto_class->port_is_lacp_current(ofport) + : -1); } + +/* Bundles. */ -/* Returns the connectivity fault management object associated with 'port_no' - * within 'ofproto', or a null pointer if 'ofproto' does not have a port - * 'port_no' or if that port does not have CFM configured. The caller must not - * modify or destroy the returned object. */ -const struct cfm * -ofproto_iface_get_cfm(struct ofproto *ofproto, uint32_t port_no) +/* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. + * A bundle is the same concept as a Port in OVSDB, that is, it consists of one + * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN + * configuration plus, if there is more than one slave, a bonding + * configuration. + * + * If 'aux' is already registered then this function updates its configuration + * to 's'. Otherwise, this function registers a new bundle. + * + * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL + * port. */ +int +ofproto_bundle_register(struct ofproto *ofproto, void *aux, + const struct ofproto_bundle_settings *s) { - struct ofport *ofport = get_port(ofproto, port_no); - return ofport ? ofport->cfm : NULL; + return (ofproto->ofproto_class->bundle_set + ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) + : EOPNOTSUPP); } + +/* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. + * If no such bundle has been registered, this has no effect. */ +int +ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) +{ + return ofproto_bundle_register(ofproto, aux, NULL); +} + -uint64_t -ofproto_get_datapath_id(const struct ofproto *ofproto) +/* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. + * If 'aux' is already registered then this function updates its configuration + * to 's'. Otherwise, this function registers a new mirror. + * + * Mirrors affect only the treatment of packets output to the OFPP_NORMAL + * port. */ +int +ofproto_mirror_register(struct ofproto *ofproto, void *aux, + const struct ofproto_mirror_settings *s) { - return ofproto->datapath_id; + return (ofproto->ofproto_class->mirror_set + ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) + : EOPNOTSUPP); } -bool -ofproto_has_primary_controller(const struct ofproto *ofproto) +/* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. + * If no mirror has been registered, this has no effect. */ +int +ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) { - return connmgr_has_controllers(ofproto->connmgr); + return ofproto_mirror_register(ofproto, aux, NULL); } -enum ofproto_fail_mode -ofproto_get_fail_mode(const struct ofproto *p) +/* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on + * which all packets are flooded, instead of using MAC learning. If + * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. + * + * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL + * port. */ +int +ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) { - return connmgr_get_fail_mode(p->connmgr); + return (ofproto->ofproto_class->set_flood_vlans + ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) + : EOPNOTSUPP); } +/* Returns true if 'aux' is a registered bundle that is currently in use as the + * output for a mirror. */ +bool +ofproto_is_mirror_output_bundle(struct ofproto *ofproto, void *aux) +{ + return (ofproto->ofproto_class->is_mirror_output_bundle + ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) + : false); +} + bool ofproto_has_snoops(const struct ofproto *ofproto) { @@ -682,6 +587,32 @@ ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) connmgr_get_snoops(ofproto->connmgr, snoops); } +static void +ofproto_destroy__(struct ofproto *ofproto) +{ + size_t i; + + connmgr_destroy(ofproto->connmgr); + + hmap_remove(&all_ofprotos, &ofproto->hmap_node); + free(ofproto->name); + free(ofproto->mfr_desc); + free(ofproto->hw_desc); + free(ofproto->sw_desc); + free(ofproto->serial_desc); + free(ofproto->dp_desc); + netdev_monitor_destroy(ofproto->netdev_monitor); + hmap_destroy(&ofproto->ports); + shash_destroy(&ofproto->port_by_name); + + for (i = 0; i < ofproto->n_tables; i++) { + classifier_destroy(&ofproto->tables[i]); + } + free(ofproto->tables); + + ofproto->ofproto_class->dealloc(ofproto); +} + void ofproto_destroy(struct ofproto *p) { @@ -691,45 +622,29 @@ ofproto_destroy(struct ofproto *p) return; } - shash_find_and_delete(&all_ofprotos, dpif_name(p->dpif)); - ofproto_flush_flows__(p); - connmgr_destroy(p->connmgr); - classifier_destroy(&p->cls); - hmap_destroy(&p->facets); - - dpif_close(p->dpif); - netdev_monitor_destroy(p->netdev_monitor); HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { hmap_remove(&p->ports, &ofport->hmap_node); - ofport_free(ofport); + ofport_destroy(ofport); } - shash_destroy(&p->port_by_name); - - netflow_destroy(p->netflow); - ofproto_sflow_destroy(p->sflow); - - mac_learning_destroy(p->ml); - free(p->mfr_desc); - free(p->hw_desc); - free(p->sw_desc); - free(p->serial_desc); - free(p->dp_desc); - - hmap_destroy(&p->ports); - - free(p); + p->ofproto_class->destruct(p); + ofproto_destroy__(p); } +/* Destroys the datapath with the respective 'name' and 'type'. With the Linux + * kernel datapath, for example, this destroys the datapath in the kernel, and + * with the netdev-based datapath, it tears down the data structures that + * represent the datapath. + * + * The datapath should not be currently open as an ofproto. */ int -ofproto_run(struct ofproto *p) +ofproto_delete(const char *name, const char *type) { - int error = ofproto_run1(p); - if (!error) { - error = ofproto_run2(p, false); - } - return error; + const struct ofproto_class *class = ofproto_class_find__(type); + return (!class ? EAFNOSUPPORT + : !class->del ? EACCES + : class->del(type, name)); } static void @@ -744,134 +659,48 @@ process_port_change(struct ofproto *ofproto, int error, char *devname) } int -ofproto_run1(struct ofproto *p) +ofproto_run(struct ofproto *p) { - struct ofport *ofport; char *devname; int error; - int i; - if (shash_is_empty(&p->port_by_name)) { - init_ports(p); + error = p->ofproto_class->run(p); + if (error == ENODEV) { + /* Someone destroyed the datapath behind our back. The caller + * better destroy us and give up, because we're just going to + * spin from here on out. */ + static struct vlog_rate_limit rl2 = VLOG_RATE_LIMIT_INIT(1, 5); + VLOG_ERR_RL(&rl2, "%s: datapath was destroyed externally", + p->name); + return ENODEV; } - for (i = 0; i < 50; i++) { - struct dpif_upcall packet; - - error = dpif_recv(p->dpif, &packet); - if (error) { - if (error == ENODEV) { - /* Someone destroyed the datapath behind our back. The caller - * better destroy us and give up, because we're just going to - * spin from here on out. */ - static struct vlog_rate_limit rl2 = VLOG_RATE_LIMIT_INIT(1, 5); - VLOG_ERR_RL(&rl2, "%s: datapath was destroyed externally", - dpif_name(p->dpif)); - return ENODEV; - } - break; + if (p->ofproto_class->port_poll) { + while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { + process_port_change(p, error, devname); } - - handle_upcall(p, &packet); - } - - while ((error = dpif_port_poll(p->dpif, &devname)) != EAGAIN) { - process_port_change(p, error, devname); } while ((error = netdev_monitor_poll(p->netdev_monitor, &devname)) != EAGAIN) { process_port_change(p, error, devname); } - HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { - ofport_run(p, ofport); - } - connmgr_run(p->connmgr, handle_openflow); - if (timer_expired(&p->next_expiration)) { - int delay = ofproto_expire(p); - timer_set_duration(&p->next_expiration, delay); - COVERAGE_INC(ofproto_expiration); - } - - if (p->netflow) { - netflow_run(p->netflow); - } - if (p->sflow) { - ofproto_sflow_run(p->sflow); - } - - return 0; -} - -int -ofproto_run2(struct ofproto *p, bool revalidate_all) -{ - /* Figure out what we need to revalidate now, if anything. */ - struct tag_set revalidate_set = p->revalidate_set; - if (p->need_revalidate) { - revalidate_all = true; - } - - /* Clear the revalidation flags. */ - tag_set_init(&p->revalidate_set); - p->need_revalidate = false; - - /* Now revalidate if there's anything to do. */ - if (revalidate_all || !tag_set_is_empty(&revalidate_set)) { - struct facet *facet, *next; - - HMAP_FOR_EACH_SAFE (facet, next, hmap_node, &p->facets) { - if (revalidate_all - || tag_set_intersects(&revalidate_set, facet->tags)) { - facet_revalidate(p, facet); - } - } - } - return 0; } void ofproto_wait(struct ofproto *p) { - struct ofport *ofport; - - HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { - ofport_wait(ofport); + p->ofproto_class->wait(p); + if (p->ofproto_class->port_poll_wait) { + p->ofproto_class->port_poll_wait(p); } - dpif_recv_wait(p->dpif); - dpif_port_poll_wait(p->dpif); netdev_monitor_poll_wait(p->netdev_monitor); - if (p->sflow) { - ofproto_sflow_wait(p->sflow); - } - if (!tag_set_is_empty(&p->revalidate_set)) { - poll_immediate_wake(); - } - if (p->need_revalidate) { - /* Shouldn't happen, but if it does just go around again. */ - VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()"); - poll_immediate_wake(); - } else { - timer_wait(&p->next_expiration); - } connmgr_wait(p->connmgr); } -void -ofproto_revalidate(struct ofproto *ofproto, tag_type tag) -{ - tag_set_add(&ofproto->revalidate_set, tag); -} - -struct tag_set * -ofproto_get_revalidate_set(struct ofproto *ofproto) -{ - return &ofproto->revalidate_set; -} - bool ofproto_is_alive(const struct ofproto *p) { @@ -900,79 +729,149 @@ ofproto_free_ofproto_controller_info(struct shash *info) shash_destroy(info); } -/* Deletes port number 'odp_port' from the datapath for 'ofproto'. +/* Makes a deep copy of 'old' into 'port'. */ +void +ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) +{ + port->name = xstrdup(old->name); + port->type = xstrdup(old->type); + port->ofp_port = old->ofp_port; +} + +/* Frees memory allocated to members of 'ofproto_port'. * - * This is almost the same as calling dpif_port_del() directly on the - * datapath, but it also makes 'ofproto' close its open netdev for the port - * (if any). This makes it possible to create a new netdev of a different - * type under the same name, which otherwise the netdev library would refuse - * to do because of the conflict. (The netdev would eventually get closed on - * the next trip through ofproto_run(), but this interface is more direct.) + * Do not call this function on an ofproto_port obtained from + * ofproto_port_dump_next(): that function retains ownership of the data in the + * ofproto_port. */ +void +ofproto_port_destroy(struct ofproto_port *ofproto_port) +{ + free(ofproto_port->name); + free(ofproto_port->type); +} + +/* Initializes 'dump' to begin dumping the ports in an ofproto. * - * Returns 0 if successful, otherwise a positive errno. */ -int -ofproto_port_del(struct ofproto *ofproto, uint16_t odp_port) + * This function provides no status indication. An error status for the entire + * dump operation is provided when it is completed by calling + * ofproto_port_dump_done(). + */ +void +ofproto_port_dump_start(struct ofproto_port_dump *dump, + const struct ofproto *ofproto) { - struct ofport *ofport = get_port(ofproto, odp_port); - const char *name = ofport ? netdev_get_name(ofport->netdev) : ""; - int error; + dump->ofproto = ofproto; + dump->error = ofproto->ofproto_class->port_dump_start(ofproto, + &dump->state); +} - error = dpif_port_del(ofproto->dpif, odp_port); - if (error) { - VLOG_ERR("%s: failed to remove port %"PRIu16" (%s) interface (%s)", - dpif_name(ofproto->dpif), odp_port, name, strerror(error)); - } else if (ofport) { - /* 'name' is the netdev's name and update_port() is going to close the - * netdev. Just in case update_port() refers to 'name' after it - * destroys 'ofport', make a copy of it around the update_port() - * call. */ - char *devname = xstrdup(name); - update_port(ofproto, devname); - free(devname); +/* Attempts to retrieve another port from 'dump', which must have been created + * with ofproto_port_dump_start(). On success, stores a new ofproto_port into + * 'port' and returns true. On failure, returns false. + * + * Failure might indicate an actual error or merely that the last port has been + * dumped. An error status for the entire dump operation is provided when it + * is completed by calling ofproto_port_dump_done(). + * + * The ofproto owns the data stored in 'port'. It will remain valid until at + * least the next time 'dump' is passed to ofproto_port_dump_next() or + * ofproto_port_dump_done(). */ +bool +ofproto_port_dump_next(struct ofproto_port_dump *dump, + struct ofproto_port *port) +{ + const struct ofproto *ofproto = dump->ofproto; + + if (dump->error) { + return false; } - return error; + + dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, + port); + if (dump->error) { + ofproto->ofproto_class->port_dump_done(ofproto, dump->state); + return false; + } + return true; } -/* Checks if 'ofproto' thinks 'odp_port' should be included in floods. Returns - * true if 'odp_port' exists and should be included, false otherwise. */ -bool -ofproto_port_is_floodable(struct ofproto *ofproto, uint16_t odp_port) +/* Completes port table dump operation 'dump', which must have been created + * with ofproto_port_dump_start(). Returns 0 if the dump operation was + * error-free, otherwise a positive errno value describing the problem. */ +int +ofproto_port_dump_done(struct ofproto_port_dump *dump) { - struct ofport *ofport = get_port(ofproto, odp_port); - return ofport && !(ofport->opp.config & OFPPC_NO_FLOOD); + 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; } -/* 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. */ +/* Attempts to add 'netdev' as a port on 'ofproto'. If successful, returns 0 + * and sets '*ofp_portp' to the new port's OpenFlow port number (if 'ofp_portp' + * is non-null). On failure, returns a positive errno value and sets + * '*ofp_portp' to OFPP_NONE (if 'ofp_portp' is non-null). */ int -ofproto_send_packet(struct ofproto *ofproto, - uint32_t port_no, uint16_t vlan_tci, - const struct ofpbuf *packet) +ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, + uint16_t *ofp_portp) { - struct ofpbuf odp_actions; + uint16_t ofp_port; 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)); + error = ofproto->ofproto_class->port_add(ofproto, netdev, &ofp_port); + if (!error) { + update_port(ofproto, netdev_get_name(netdev)); + } + if (ofp_portp) { + *ofp_portp = error ? OFPP_NONE : ofp_port; } - 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); + return error; +} +/* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and + * initializes '*port' appropriately; on failure, returns a positive errno + * value. + * + * The caller owns the data in 'ofproto_port' and must free it with + * ofproto_port_destroy() when it is no longer needed. */ +int +ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, + struct ofproto_port *port) +{ + int error; + + error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); if (error) { - VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)", - dpif_name(ofproto->dpif), port_no, strerror(error)); + memset(port, 0, sizeof *port); + } + return error; +} + +/* Deletes port number 'ofp_port' from the datapath for 'ofproto'. + * Returns 0 if successful, otherwise a positive errno. */ +int +ofproto_port_del(struct ofproto *ofproto, uint16_t ofp_port) +{ + struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); + const char *name = ofport ? netdev_get_name(ofport->netdev) : ""; + int error; + + error = ofproto->ofproto_class->port_del(ofproto, ofp_port); + if (!error && ofport) { + /* 'name' is the netdev's name and update_port() is going to close the + * netdev. Just in case update_port() refers to 'name' after it + * destroys 'ofport', make a copy of it around the update_port() + * call. */ + char *devname = xstrdup(name); + update_port(ofproto, devname); + free(devname); } return error; } -/* Adds a flow to the OpenFlow flow table in 'p' that matches 'cls_rule' and +/* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and * performs the 'n_actions' actions in 'actions'. The new flow will not * timeout. * @@ -980,56 +879,55 @@ ofproto_send_packet(struct ofproto *ofproto, * (0...65535, inclusive) then the flow will be visible to OpenFlow * controllers; otherwise, it will be hidden. * - * The caller retains ownership of 'cls_rule' and 'actions'. */ + * The caller retains ownership of 'cls_rule' and 'actions'. + * + * This is a helper function for in-band control and fail-open. */ void ofproto_add_flow(struct ofproto *p, const struct cls_rule *cls_rule, const union ofp_action *actions, size_t n_actions) { struct rule *rule; - rule = rule_create(cls_rule, actions, n_actions, 0, 0, 0, false); - rule_insert(p, rule); + rule_create(p, cls_rule, actions, n_actions, 0, 0, 0, false, &rule); } +/* Searches for a rule with matching criteria exactly equal to 'target' in + * ofproto's table 0 and, if it finds one, deletes it. + * + * This is a helper function for in-band control and fail-open. */ void ofproto_delete_flow(struct ofproto *ofproto, const struct cls_rule *target) { struct rule *rule; - rule = rule_from_cls_rule(classifier_find_rule_exactly(&ofproto->cls, - target)); - if (rule) { - rule_remove(ofproto, rule); - } + rule = rule_from_cls_rule(classifier_find_rule_exactly( + &ofproto->tables[0], target)); + ofproto_rule_destroy(rule); } static void ofproto_flush_flows__(struct ofproto *ofproto) { - struct facet *facet, *next_facet; - struct rule *rule, *next_rule; - struct cls_cursor cursor; + size_t i; COVERAGE_INC(ofproto_flush); - HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) { - /* Mark the facet as not installed so that facet_remove() doesn't - * bother trying to uninstall it. There is no point in uninstalling it - * individually since we are about to blow away all the facets with - * dpif_flow_flush(). */ - facet->installed = false; - facet->dp_packet_count = 0; - facet->dp_byte_count = 0; - facet_remove(ofproto, facet); + if (ofproto->ofproto_class->flush) { + ofproto->ofproto_class->flush(ofproto); } - cls_cursor_init(&cursor, &ofproto->cls, NULL); - CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { - rule_remove(ofproto, rule); - } + for (i = 0; i < ofproto->n_tables; i++) { + struct rule *rule, *next_rule; + struct cls_cursor cursor; - dpif_flow_flush(ofproto->dpif); + cls_cursor_init(&cursor, &ofproto->tables[i], NULL); + CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { + ofproto_rule_destroy(rule); + } + } } +/* Deletes all of the flows from all of ofproto's flow tables, then + * reintroduces rules required by in-band control and fail open. */ void ofproto_flush_flows(struct ofproto *ofproto) { @@ -1040,10 +938,10 @@ ofproto_flush_flows(struct ofproto *ofproto) static void reinit_ports(struct ofproto *p) { - struct dpif_port_dump dump; + struct ofproto_port_dump dump; struct sset devnames; struct ofport *ofport; - struct dpif_port dpif_port; + struct ofproto_port ofproto_port; const char *devname; COVERAGE_INC(ofproto_reinit_ports); @@ -1052,8 +950,8 @@ reinit_ports(struct ofproto *p) 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) { @@ -1062,56 +960,45 @@ reinit_ports(struct ofproto *p) 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', in *HOST* byte order. */ +/* 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.name = ofproto_port->name; + netdev_options.type = ofproto_port->type; netdev_options.ethertype = NETDEV_ETH_TYPE_NONE; error = netdev_open(&netdev_options, &netdev); if (error) { VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s " "cannot be opened (%s)", - dpif_port->name, dpif_port->port_no, - dpif_port->name, strerror(error)); + ofproto_port->name, ofproto_port->ofp_port, + ofproto_port->name, strerror(error)); return NULL; } netdev_get_flags(netdev, &flags); + netdev_get_features(netdev, &curr, &advertised, &supported, &peer); - opp->port_no = 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); - opp->config = flags & NETDEV_UP ? 0 : OFPPC_PORT_DOWN; - opp->state = netdev_get_carrier(netdev) ? 0 : OFPPS_LINK_DOWN; - netdev_get_features(netdev, &opp->curr, &opp->advertised, - &opp->supported, &opp->peer); - return netdev; -} + 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); + opp->advertised = htonl(advertised); + opp->supported = htonl(supported); + opp->peer = htonl(peer); -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; - } + return netdev; } /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, @@ -1123,7 +1010,7 @@ ofport_equal(const struct ofp_phy_port *a, const struct ofp_phy_port *b) BUILD_ASSERT_DECL(sizeof *a == 48); /* Detect ofp_phy_port changes. */ return (!memcmp(a->hw_addr, b->hw_addr, sizeof a->hw_addr) && a->state == b->state - && !((a->config ^ b->config) & OFPPC_PORT_DOWN) + && !((a->config ^ b->config) & htonl(OFPPC_PORT_DOWN)) && a->curr == b->curr && a->advertised == b->advertised && a->supported == b->supported @@ -1139,41 +1026,49 @@ ofport_install(struct ofproto *p, { const char *netdev_name = netdev_get_name(netdev); struct ofport *ofport; - - connmgr_send_port_status(p->connmgr, opp, OFPPR_ADD); + int error; /* Create ofport. */ - ofport = xmalloc(sizeof *ofport); + ofport = p->ofproto_class->port_alloc(); + if (!ofport) { + error = ENOMEM; + goto error; + } + ofport->ofproto = p; ofport->netdev = netdev; ofport->opp = *opp; - ofport->odp_port = ofp_port_to_odp_port(opp->port_no); - ofport->cfm = NULL; + ofport->ofp_port = ntohs(opp->port_no); /* Add port to 'p'. */ netdev_monitor_add(p->netdev_monitor, ofport->netdev); - hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->odp_port, 0)); + hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->ofp_port, 0)); shash_add(&p->port_by_name, netdev_name, ofport); - if (p->sflow) { - ofproto_sflow_add_port(p->sflow, ofport->odp_port, netdev_name); + + /* Let the ofproto_class initialize its private data. */ + error = p->ofproto_class->port_construct(ofport); + if (error) { + goto error; + } + connmgr_send_port_status(p->connmgr, opp, OFPPR_ADD); + return; + +error: + VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", + p->name, netdev_name, strerror(error)); + if (ofport) { + ofport_destroy__(ofport); + } else { + netdev_close(netdev); } } /* Removes 'ofport' from 'p' and destroys it. */ static void -ofport_remove(struct ofproto *p, struct ofport *ofport) +ofport_remove(struct ofport *ofport) { - connmgr_send_port_status(p->connmgr, &ofport->opp, OFPPR_DELETE); - - netdev_monitor_remove(p->netdev_monitor, ofport->netdev); - hmap_remove(&p->ports, &ofport->hmap_node); - shash_delete(&p->port_by_name, - shash_find(&p->port_by_name, - netdev_get_name(ofport->netdev))); - if (p->sflow) { - ofproto_sflow_del_port(p->sflow, ofport->odp_port); - } - - ofport_free(ofport); + connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->opp, + OFPPR_DELETE); + ofport_destroy(ofport); } /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and @@ -1183,7 +1078,7 @@ ofport_remove_with_name(struct ofproto *ofproto, const char *name) { struct ofport *port = shash_find_data(&ofproto->port_by_name, name); if (port) { - ofport_remove(ofproto, port); + ofport_remove(port); } } @@ -1192,73 +1087,66 @@ ofport_remove_with_name(struct ofproto *ofproto, const char *name) * Does not handle a name or port number change. The caller must implement * such a change as a delete followed by an add. */ static void -ofport_modified(struct ofproto *ofproto, struct ofport *port, - struct netdev *netdev, struct ofp_phy_port *opp) +ofport_modified(struct ofport *port, struct ofp_phy_port *opp) { memcpy(port->opp.hw_addr, opp->hw_addr, ETH_ADDR_LEN); - port->opp.config = ((port->opp.config & ~OFPPC_PORT_DOWN) - | (opp->config & OFPPC_PORT_DOWN)); + port->opp.config = ((port->opp.config & ~htonl(OFPPC_PORT_DOWN)) + | (opp->config & htonl(OFPPC_PORT_DOWN))); port->opp.state = opp->state; port->opp.curr = opp->curr; port->opp.advertised = opp->advertised; port->opp.supported = opp->supported; port->opp.peer = opp->peer; - netdev_monitor_remove(ofproto->netdev_monitor, port->netdev); - netdev_monitor_add(ofproto->netdev_monitor, netdev); - - netdev_close(port->netdev); - port->netdev = netdev; - - connmgr_send_port_status(ofproto->connmgr, &port->opp, OFPPR_MODIFY); + connmgr_send_port_status(port->ofproto->connmgr, &port->opp, OFPPR_MODIFY); } -static void -ofport_run(struct ofproto *ofproto, struct ofport *ofport) +void +ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port) { - if (ofport->cfm) { - cfm_run(ofport->cfm); - - if (cfm_should_send_ccm(ofport->cfm)) { - struct ofpbuf packet; - struct ccm *ccm; - - ofpbuf_init(&packet, 0); - ccm = eth_compose(&packet, eth_addr_ccm, ofport->opp.hw_addr, - ETH_TYPE_CFM, sizeof *ccm); - cfm_compose_ccm(ofport->cfm, ccm); - ofproto_send_packet(ofproto, ofport->odp_port, 0, &packet); - ofpbuf_uninit(&packet); + struct ofport *port = ofproto_get_port(ofproto, ofp_port); + if (port) { + if (port->ofproto->ofproto_class->set_cfm) { + port->ofproto->ofproto_class->set_cfm(port, NULL, NULL, 0); + } + if (port->ofproto->ofproto_class->bundle_remove) { + port->ofproto->ofproto_class->bundle_remove(port); } } } static void -ofport_wait(struct ofport *ofport) +ofport_destroy__(struct ofport *port) { - if (ofport->cfm) { - cfm_wait(ofport->cfm); - } + struct ofproto *ofproto = port->ofproto; + const char *name = netdev_get_name(port->netdev); + + netdev_monitor_remove(ofproto->netdev_monitor, port->netdev); + hmap_remove(&ofproto->ports, &port->hmap_node); + shash_delete(&ofproto->port_by_name, + shash_find(&ofproto->port_by_name, name)); + + netdev_close(port->netdev); + ofproto->ofproto_class->port_dealloc(port); } static void -ofport_free(struct ofport *ofport) +ofport_destroy(struct ofport *port) { - if (ofport) { - cfm_destroy(ofport->cfm); - netdev_close(ofport->netdev); - free(ofport); - } + if (port) { + port->ofproto->ofproto_class->port_destruct(port); + ofport_destroy__(port); + } } -static struct ofport * -get_port(const struct ofproto *ofproto, uint16_t odp_port) +struct ofport * +ofproto_get_port(const struct ofproto *ofproto, uint16_t ofp_port) { struct ofport *port; HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, - hash_int(odp_port, 0), &ofproto->ports) { - if (port->odp_port == odp_port) { + hash_int(ofp_port, 0), &ofproto->ports) { + if (port->ofp_port == ofp_port) { return port; } } @@ -1268,7 +1156,7 @@ get_port(const struct ofproto *ofproto, uint16_t odp_port) static void update_port(struct ofproto *ofproto, const char *name) { - struct dpif_port dpif_port; + struct ofproto_port ofproto_port; struct ofp_phy_port opp; struct netdev *netdev; struct ofport *port; @@ -1276,24 +1164,33 @@ update_port(struct ofproto *ofproto, const char *name) 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)) { /* 'name' hasn't changed location. Any properties changed? */ if (!ofport_equal(&port->opp, &opp)) { - ofport_modified(ofproto, port, netdev, &opp); - } else { - netdev_close(netdev); + ofport_modified(port, &opp); + } + + /* Install the newly opened netdev in case it has changed. */ + netdev_monitor_remove(ofproto->netdev_monitor, port->netdev); + netdev_monitor_add(ofproto->netdev_monitor, netdev); + + netdev_close(port->netdev); + port->netdev = netdev; + + if (port->ofproto->ofproto_class->port_modified) { + port->ofproto->ofproto_class->port_modified(port); } } else { /* If 'port' is nonnull then its name differs from 'name' and thus * we should delete it. If we think there's a port named 'name' * then its port number must be wrong now so delete it too. */ if (port) { - ofport_remove(ofproto, port); + ofport_remove(port); } ofport_remove_with_name(ofproto, name); ofport_install(ofproto, netdev, &opp); @@ -1302,21 +1199,28 @@ update_port(struct ofproto *ofproto, const char *name) /* Any port named 'name' is gone now. */ ofport_remove_with_name(ofproto, name); } - dpif_port_destroy(&dpif_port); + ofproto_port_destroy(&ofproto_port); } static int init_ports(struct ofproto *p) { - struct dpif_port_dump dump; - struct dpif_port dpif_port; - - DPIF_PORT_FOR_EACH (&dpif_port, &dump, p->dpif) { - if (!ofport_conflicts(p, &dpif_port)) { + struct ofproto_port_dump dump; + struct ofproto_port ofproto_port; + + OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { + uint16_t ofp_port = ofproto_port.ofp_port; + if (ofproto_get_port(p, ofp_port)) { + VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath", + ofp_port); + } else if (shash_find(&p->port_by_name, ofproto_port.name)) { + VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath", + ofproto_port.name); + } else { struct ofp_phy_port opp; struct netdev *netdev; - netdev = ofport_open(&dpif_port, &opp); + netdev = ofport_open(&ofproto_port, &opp); if (netdev) { ofport_install(p, netdev, &opp); } @@ -1326,68 +1230,70 @@ init_ports(struct ofproto *p) return 0; } -/* Returns true if 'rule' should be hidden from the controller. - * - * Rules with priority higher than UINT16_MAX are set up by ofproto itself - * (e.g. by in-band control) and are intentionally hidden from the - * controller. */ -static bool -rule_is_hidden(const struct rule *rule) -{ - return rule->cr.priority > UINT16_MAX; -} - -/* Creates and returns a new rule initialized as specified. - * - * The caller is responsible for inserting the rule into the classifier (with - * rule_insert()). */ -static struct rule * -rule_create(const struct cls_rule *cls_rule, +/* Creates a new rule initialized as specified, inserts it into 'ofproto''s + * flow table, and stores the new rule into '*rulep'. Returns 0 on success, + * otherwise a positive errno value or OpenFlow error code. */ +static int +rule_create(struct ofproto *ofproto, const struct cls_rule *cls_rule, const union ofp_action *actions, size_t n_actions, uint16_t idle_timeout, uint16_t hard_timeout, - ovs_be64 flow_cookie, bool send_flow_removed) + ovs_be64 flow_cookie, bool send_flow_removed, + struct rule **rulep) { - struct rule *rule = xzalloc(sizeof *rule); + struct rule *rule; + int error; + + rule = ofproto->ofproto_class->rule_alloc(); + if (!rule) { + error = ENOMEM; + goto error; + } + + rule->ofproto = ofproto; rule->cr = *cls_rule; + rule->flow_cookie = flow_cookie; + rule->created = time_msec(); rule->idle_timeout = idle_timeout; rule->hard_timeout = hard_timeout; - rule->flow_cookie = flow_cookie; - rule->used = rule->created = time_msec(); rule->send_flow_removed = send_flow_removed; - list_init(&rule->facets); if (n_actions > 0) { - rule->n_actions = n_actions; rule->actions = xmemdup(actions, n_actions * sizeof *actions); + } else { + rule->actions = NULL; } + rule->n_actions = n_actions; - return rule; -} + error = ofproto->ofproto_class->rule_construct(rule); + if (error) { + ofproto_rule_destroy__(rule); + goto error; + } -static struct rule * -rule_from_cls_rule(const struct cls_rule *cls_rule) -{ - return cls_rule ? CONTAINER_OF(cls_rule, struct rule, cr) : NULL; + *rulep = rule; + return 0; + +error: + VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", + ofproto->name, strerror(error)); + *rulep = NULL; + return error; } static void -rule_free(struct rule *rule) +ofproto_rule_destroy__(struct rule *rule) { free(rule->actions); - free(rule); + rule->ofproto->ofproto_class->rule_dealloc(rule); } -/* Destroys 'rule' and iterates through all of its facets and revalidates them, - * destroying any that no longer has a rule (which is probably all of them). - * - * The caller must have already removed 'rule' from the classifier. */ -static void -rule_destroy(struct ofproto *ofproto, struct rule *rule) +/* Destroys 'rule' and removes it from the flow table and the datapath. */ +void +ofproto_rule_destroy(struct rule *rule) { - struct facet *facet, *next_facet; - LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) { - facet_revalidate(ofproto, facet); + if (rule) { + rule->ofproto->ofproto_class->rule_destruct(rule); + ofproto_rule_destroy__(rule); } - rule_free(rule); } /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action @@ -1411,1127 +1317,133 @@ rule_has_out_port(const struct rule *rule, ovs_be16 out_port) return false; } -/* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on - * 'packet', which arrived on 'in_port'. - * - * Takes ownership of 'packet'. */ -static bool -execute_odp_actions(struct ofproto *ofproto, const struct flow *flow, - const struct nlattr *odp_actions, size_t actions_len, - struct ofpbuf *packet) -{ - if (actions_len == NLA_ALIGN(NLA_HDRLEN + sizeof(uint64_t)) - && odp_actions->nla_type == ODP_ACTION_ATTR_CONTROLLER) { - /* As an optimization, avoid a round-trip from userspace to kernel to - * userspace. This also avoids possibly filling up kernel packet - * buffers along the way. */ - struct dpif_upcall upcall; - - upcall.type = DPIF_UC_ACTION; - upcall.packet = packet; - upcall.key = NULL; - upcall.key_len = 0; - upcall.userdata = nl_attr_get_u64(odp_actions); - upcall.sample_pool = 0; - upcall.actions = NULL; - upcall.actions_len = 0; - - send_packet_in(ofproto, &upcall, flow, false); - - return true; - } else { - int error; - - error = dpif_execute(ofproto->dpif, odp_actions, actions_len, packet); - ofpbuf_delete(packet); - return !error; - } -} - -/* Executes the actions indicated by 'facet' on 'packet' and credits 'facet''s +/* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s * statistics appropriately. 'packet' must have at least sizeof(struct * ofp_packet_in) bytes of headroom. * - * For correct results, 'packet' must actually be in 'facet''s flow; that is, - * applying flow_extract() to 'packet' would yield the same flow as - * 'facet->flow'. - * - * 'facet' must have accurately composed ODP actions; that is, it must not be - * in need of revalidation. - * - * Takes ownership of 'packet'. */ -static void -facet_execute(struct ofproto *ofproto, struct facet *facet, - struct ofpbuf *packet) -{ - struct dpif_flow_stats stats; - - assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in)); - - flow_extract_stats(&facet->flow, packet, &stats); - stats.used = time_msec(); - if (execute_odp_actions(ofproto, &facet->flow, - facet->actions, facet->actions_len, packet)) { - facet_update_stats(ofproto, facet, &stats); - } -} - -/* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s - * statistics (or the statistics for one of its facets) appropriately. - * 'packet' must have at least sizeof(struct ofp_packet_in) bytes of headroom. - * * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited * with statistics for 'packet' either way. * - * Takes ownership of 'packet'. */ -static void -rule_execute(struct ofproto *ofproto, struct rule *rule, uint16_t in_port, - struct ofpbuf *packet) -{ - struct action_xlate_ctx ctx; - struct ofpbuf *odp_actions; - struct facet *facet; - struct flow flow; - size_t size; - - assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in)); - - flow_extract(packet, 0, in_port, &flow); - - /* First look for a related facet. If we find one, account it to that. */ - facet = facet_lookup_valid(ofproto, &flow); - if (facet && facet->rule == rule) { - facet_execute(ofproto, facet, packet); - return; - } - - /* Otherwise, if 'rule' is in fact the correct rule for 'packet', then - * create a new facet for it and use that. */ - if (rule_lookup(ofproto, &flow) == rule) { - facet = facet_create(ofproto, rule, &flow, packet); - facet_execute(ofproto, facet, packet); - facet_install(ofproto, facet, true); - return; - } - - /* We can't account anything to a facet. If we were to try, then that - * facet would have a non-matching rule, busting our invariants. */ - action_xlate_ctx_init(&ctx, ofproto, &flow, packet); - odp_actions = xlate_actions(&ctx, rule->actions, rule->n_actions); - size = packet->size; - if (execute_odp_actions(ofproto, &flow, odp_actions->data, - odp_actions->size, packet)) { - rule->used = time_msec(); - rule->packet_count++; - rule->byte_count += size; - flow_push_stats(ofproto, rule, &flow, 1, size, rule->used); - } - ofpbuf_delete(odp_actions); -} - -/* Inserts 'rule' into 'p''s flow table. */ -static void -rule_insert(struct ofproto *p, struct rule *rule) -{ - struct rule *displaced_rule; - - displaced_rule = rule_from_cls_rule(classifier_insert(&p->cls, &rule->cr)); - if (displaced_rule) { - rule_destroy(p, displaced_rule); - } - p->need_revalidate = true; -} - -/* Creates and returns a new facet within 'ofproto' owned by 'rule', given a - * 'flow' and an example 'packet' within that flow. - * - * The caller must already have determined that no facet with an identical - * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in - * 'ofproto''s classifier table. */ -static struct facet * -facet_create(struct ofproto *ofproto, struct rule *rule, - const struct flow *flow, const struct ofpbuf *packet) -{ - struct facet *facet; - - facet = xzalloc(sizeof *facet); - facet->used = time_msec(); - hmap_insert(&ofproto->facets, &facet->hmap_node, flow_hash(flow, 0)); - list_push_back(&rule->facets, &facet->list_node); - facet->rule = rule; - facet->flow = *flow; - netflow_flow_init(&facet->nf_flow); - netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used); - - facet_make_actions(ofproto, facet, packet); - - return facet; -} - -static void -facet_free(struct facet *facet) -{ - free(facet->actions); - free(facet); -} - -/* Remove 'rule' from 'ofproto' and free up the associated memory: - * - * - Removes 'rule' from the classifier. - * - * - If 'rule' has facets, revalidates them (and possibly uninstalls and - * destroys them), via rule_destroy(). - */ -static void -rule_remove(struct ofproto *ofproto, struct rule *rule) -{ - COVERAGE_INC(ofproto_del_rule); - ofproto->need_revalidate = true; - classifier_remove(&ofproto->cls, &rule->cr); - rule_destroy(ofproto, rule); -} - -/* Remove 'facet' from 'ofproto' and free up the associated memory: - * - * - If 'facet' was installed in the datapath, uninstalls it and updates its - * rule's statistics, via facet_uninstall(). - * - * - Removes 'facet' from its rule and from ofproto->facets. - */ -static void -facet_remove(struct ofproto *ofproto, struct facet *facet) -{ - facet_uninstall(ofproto, facet); - facet_flush_stats(ofproto, facet); - hmap_remove(&ofproto->facets, &facet->hmap_node); - list_remove(&facet->list_node); - facet_free(facet); -} - -/* Composes the ODP actions for 'facet' based on its rule's actions. */ -static void -facet_make_actions(struct ofproto *p, struct facet *facet, - const struct ofpbuf *packet) -{ - const struct rule *rule = facet->rule; - struct ofpbuf *odp_actions; - struct action_xlate_ctx ctx; - - action_xlate_ctx_init(&ctx, p, &facet->flow, packet); - odp_actions = xlate_actions(&ctx, rule->actions, rule->n_actions); - facet->tags = ctx.tags; - facet->may_install = ctx.may_set_up_flow; - facet->nf_flow.output_iface = ctx.nf_output_iface; - - if (facet->actions_len != odp_actions->size - || memcmp(facet->actions, odp_actions->data, odp_actions->size)) { - free(facet->actions); - facet->actions_len = odp_actions->size; - facet->actions = xmemdup(odp_actions->data, odp_actions->size); - } - - ofpbuf_delete(odp_actions); -} - -/* Updates 'facet''s flow in the datapath setting its actions to 'actions_len' - * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters - * in the datapath will be zeroed and 'stats' will be updated with traffic new - * since 'facet' was last updated. - * - * Returns 0 if successful, otherwise a positive errno value.*/ -static int -facet_put__(struct ofproto *ofproto, struct facet *facet, - const struct nlattr *actions, size_t actions_len, - struct dpif_flow_stats *stats) -{ - struct odputil_keybuf keybuf; - enum dpif_flow_put_flags flags; - struct ofpbuf key; - int ret; - - flags = DPIF_FP_CREATE | DPIF_FP_MODIFY; - if (stats) { - flags |= DPIF_FP_ZERO_STATS; - } - - ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); - odp_flow_key_from_flow(&key, &facet->flow); - - ret = dpif_flow_put(ofproto->dpif, flags, key.data, key.size, - actions, actions_len, stats); - - if (stats) { - facet_reset_dp_stats(facet, stats); - } - - return ret; -} - -/* If 'facet' is installable, inserts or re-inserts it into 'p''s datapath. If - * 'zero_stats' is true, clears any existing statistics from the datapath for - * 'facet'. */ -static void -facet_install(struct ofproto *p, struct facet *facet, bool zero_stats) -{ - struct dpif_flow_stats stats; - - if (facet->may_install - && !facet_put__(p, facet, facet->actions, facet->actions_len, - zero_stats ? &stats : NULL)) { - facet->installed = true; - } -} - -/* Ensures that the bytes in 'facet', plus 'extra_bytes', have been passed up - * to the accounting hook function in the ofhooks structure. */ -static void -facet_account(struct ofproto *ofproto, - struct facet *facet, uint64_t extra_bytes) -{ - uint64_t total_bytes = facet->byte_count + extra_bytes; - - if (ofproto->ofhooks->account_flow_cb - && total_bytes > facet->accounted_bytes) - { - ofproto->ofhooks->account_flow_cb( - &facet->flow, facet->tags, facet->actions, facet->actions_len, - total_bytes - facet->accounted_bytes, ofproto->aux); - facet->accounted_bytes = total_bytes; - } -} - -/* If 'rule' is installed in the datapath, uninstalls it. */ -static void -facet_uninstall(struct ofproto *p, struct facet *facet) -{ - if (facet->installed) { - struct odputil_keybuf keybuf; - struct dpif_flow_stats stats; - struct ofpbuf key; - int error; - - ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); - odp_flow_key_from_flow(&key, &facet->flow); - - error = dpif_flow_del(p->dpif, key.data, key.size, &stats); - facet_reset_dp_stats(facet, &stats); - if (!error) { - facet_update_stats(p, facet, &stats); - } - - facet->installed = false; - } else { - assert(facet->dp_packet_count == 0); - assert(facet->dp_byte_count == 0); - } -} - -/* Returns true if the only action for 'facet' is to send to the controller. - * (We don't report NetFlow expiration messages for such facets because they - * are just part of the control logic for the network, not real traffic). */ -static bool -facet_is_controller_flow(struct facet *facet) -{ - return (facet - && facet->rule->n_actions == 1 - && action_outputs_to_port(&facet->rule->actions[0], - htons(OFPP_CONTROLLER))); -} - -/* Resets 'facet''s datapath statistics counters. This should be called when - * 'facet''s statistics are cleared in the datapath. If 'stats' is non-null, - * it should contain the statistics returned by dpif when 'facet' was reset in - * the datapath. 'stats' will be modified to only included statistics new - * since 'facet' was last updated. */ -static void -facet_reset_dp_stats(struct facet *facet, struct dpif_flow_stats *stats) -{ - if (stats && facet->dp_packet_count < stats->n_packets - && facet->dp_byte_count < stats->n_bytes) { - stats->n_packets -= facet->dp_packet_count; - stats->n_bytes -= facet->dp_byte_count; - } - - facet->dp_packet_count = 0; - facet->dp_byte_count = 0; -} - -/* Folds all of 'facet''s statistics into its rule. Also updates the - * accounting ofhook and emits a NetFlow expiration if appropriate. All of - * 'facet''s statistics in the datapath should have been zeroed and folded into - * its packet and byte counts before this function is called. */ -static void -facet_flush_stats(struct ofproto *ofproto, struct facet *facet) -{ - assert(!facet->dp_byte_count); - assert(!facet->dp_packet_count); - - facet_push_stats(ofproto, facet); - facet_account(ofproto, facet, 0); - - if (ofproto->netflow && !facet_is_controller_flow(facet)) { - struct ofexpired expired; - expired.flow = facet->flow; - expired.packet_count = facet->packet_count; - expired.byte_count = facet->byte_count; - expired.used = facet->used; - netflow_expire(ofproto->netflow, &facet->nf_flow, &expired); - } - - facet->rule->packet_count += facet->packet_count; - facet->rule->byte_count += facet->byte_count; - - /* Reset counters to prevent double counting if 'facet' ever gets - * reinstalled. */ - facet->packet_count = 0; - facet->byte_count = 0; - facet->rs_packet_count = 0; - facet->rs_byte_count = 0; - facet->accounted_bytes = 0; - - netflow_flow_clear(&facet->nf_flow); -} - -/* Searches 'ofproto''s table of facets for one exactly equal to 'flow'. - * Returns it if found, otherwise a null pointer. - * - * The returned facet might need revalidation; use facet_lookup_valid() - * instead if that is important. */ -static struct facet * -facet_find(struct ofproto *ofproto, const struct flow *flow) -{ - struct facet *facet; - - HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, flow_hash(flow, 0), - &ofproto->facets) { - if (flow_equal(flow, &facet->flow)) { - return facet; - } - } - - return NULL; -} - -/* Searches 'ofproto''s table of facets for one exactly equal to 'flow'. - * Returns it if found, otherwise a null pointer. - * - * The returned facet is guaranteed to be valid. */ -static struct facet * -facet_lookup_valid(struct ofproto *ofproto, const struct flow *flow) -{ - struct facet *facet = facet_find(ofproto, flow); - - /* The facet we found might not be valid, since we could be in need of - * revalidation. If it is not valid, don't return it. */ - if (facet - && ofproto->need_revalidate - && !facet_revalidate(ofproto, facet)) { - COVERAGE_INC(ofproto_invalidated); - return NULL; - } - - return facet; -} - -/* Re-searches 'ofproto''s classifier for a rule matching 'facet': - * - * - If the rule found is different from 'facet''s current rule, moves - * 'facet' to the new rule and recompiles its actions. - * - * - If the rule found is the same as 'facet''s current rule, leaves 'facet' - * where it is and recompiles its actions anyway. - * - * - If there is none, destroys 'facet'. - * - * Returns true if 'facet' still exists, false if it has been destroyed. */ -static bool -facet_revalidate(struct ofproto *ofproto, struct facet *facet) -{ - struct action_xlate_ctx ctx; - struct ofpbuf *odp_actions; - struct rule *new_rule; - bool actions_changed; - - COVERAGE_INC(facet_revalidate); - - /* Determine the new rule. */ - new_rule = rule_lookup(ofproto, &facet->flow); - if (!new_rule) { - /* No new rule, so delete the facet. */ - facet_remove(ofproto, facet); - return false; - } - - /* Calculate new ODP actions. - * - * We do not modify any 'facet' state yet, because we might need to, e.g., - * emit a NetFlow expiration and, if so, we need to have the old state - * around to properly compose it. */ - action_xlate_ctx_init(&ctx, ofproto, &facet->flow, NULL); - odp_actions = xlate_actions(&ctx, new_rule->actions, new_rule->n_actions); - actions_changed = (facet->actions_len != odp_actions->size - || memcmp(facet->actions, odp_actions->data, - facet->actions_len)); - - /* If the ODP actions changed or the installability changed, then we need - * to talk to the datapath. */ - if (actions_changed || ctx.may_set_up_flow != facet->installed) { - if (ctx.may_set_up_flow) { - struct dpif_flow_stats stats; - - facet_put__(ofproto, facet, - odp_actions->data, odp_actions->size, &stats); - facet_update_stats(ofproto, facet, &stats); - } else { - facet_uninstall(ofproto, facet); - } - - /* The datapath flow is gone or has zeroed stats, so push stats out of - * 'facet' into 'rule'. */ - facet_flush_stats(ofproto, facet); - } - - /* Update 'facet' now that we've taken care of all the old state. */ - facet->tags = ctx.tags; - facet->nf_flow.output_iface = ctx.nf_output_iface; - facet->may_install = ctx.may_set_up_flow; - if (actions_changed) { - free(facet->actions); - facet->actions_len = odp_actions->size; - facet->actions = xmemdup(odp_actions->data, odp_actions->size); - } - if (facet->rule != new_rule) { - COVERAGE_INC(facet_changed_rule); - list_remove(&facet->list_node); - list_push_back(&new_rule->facets, &facet->list_node); - facet->rule = new_rule; - facet->used = new_rule->created; - facet->rs_used = facet->used; - } - - ofpbuf_delete(odp_actions); - - return true; -} - -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) { - hton_ofp_phy_port(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 & OFPPC_NO_FWD) { - /* Forwarding disabled on port. */ - return; - } - } else { - /* - * We don't have an ofport record for this port, but it doesn't hurt to - * allow forwarding to it anyhow. Maybe such a port will appear later - * and we're pre-populating the flow table. - */ - } - - nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_OUTPUT, port); - ctx->nf_output_iface = port; -} - -static struct rule * -rule_lookup(struct ofproto *ofproto, const struct flow *flow) -{ - return rule_from_cls_rule(classifier_lookup(&ofproto->cls, flow)); -} - -static void -xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port) -{ - if (ctx->recurse < MAX_RESUBMIT_RECURSION) { - uint16_t old_in_port; - struct rule *rule; - - /* Look up a flow with 'in_port' as the input port. Then restore the - * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will - * have surprising behavior). */ - old_in_port = ctx->flow.in_port; - ctx->flow.in_port = in_port; - rule = rule_lookup(ctx->ofproto, &ctx->flow); - ctx->flow.in_port = old_in_port; - - if (ctx->resubmit_hook) { - ctx->resubmit_hook(ctx, rule); - } - - if (rule) { - ctx->recurse++; - do_xlate_actions(rule->actions, rule->n_actions, ctx); - ctx->recurse--; - } - } else { - static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1); - - VLOG_ERR_RL(&recurse_rl, "NXAST_RESUBMIT recursed over %d times", - MAX_RESUBMIT_RECURSION); - } -} - -static void -flood_packets(struct ofproto *ofproto, uint16_t odp_in_port, uint32_t mask, - uint16_t *nf_output_iface, struct ofpbuf *odp_actions) -{ - struct ofport *ofport; - - HMAP_FOR_EACH (ofport, hmap_node, &ofproto->ports) { - uint16_t odp_port = ofport->odp_port; - if (odp_port != odp_in_port && !(ofport->opp.config & mask)) { - nl_msg_put_u32(odp_actions, ODP_ACTION_ATTR_OUTPUT, odp_port); - } - } - *nf_output_iface = NF_OUT_FLOOD; -} - -static void -xlate_output_action__(struct action_xlate_ctx *ctx, - uint16_t port, uint16_t max_len) -{ - uint16_t odp_port; - uint16_t prev_nf_output_iface = ctx->nf_output_iface; - - ctx->nf_output_iface = NF_OUT_DROP; - - switch (port) { - case OFPP_IN_PORT: - add_output_action(ctx, ctx->flow.in_port); - break; - case OFPP_TABLE: - xlate_table_action(ctx, ctx->flow.in_port); - break; - case OFPP_NORMAL: - if (!ctx->ofproto->ofhooks->normal_cb(&ctx->flow, ctx->packet, - ctx->odp_actions, &ctx->tags, - &ctx->nf_output_iface, - ctx->ofproto->aux)) { - COVERAGE_INC(ofproto_uninstallable); - ctx->may_set_up_flow = false; - } - break; - case OFPP_FLOOD: - flood_packets(ctx->ofproto, ctx->flow.in_port, OFPPC_NO_FLOOD, - &ctx->nf_output_iface, ctx->odp_actions); - break; - case OFPP_ALL: - flood_packets(ctx->ofproto, ctx->flow.in_port, 0, - &ctx->nf_output_iface, ctx->odp_actions); - break; - case OFPP_CONTROLLER: - nl_msg_put_u64(ctx->odp_actions, ODP_ACTION_ATTR_CONTROLLER, max_len); - break; - case OFPP_LOCAL: - add_output_action(ctx, ODPP_LOCAL); - break; - default: - odp_port = ofp_port_to_odp_port(port); - if (odp_port != ctx->flow.in_port) { - add_output_action(ctx, odp_port); - } - break; - } - - if (prev_nf_output_iface == NF_OUT_FLOOD) { - ctx->nf_output_iface = NF_OUT_FLOOD; - } else if (ctx->nf_output_iface == NF_OUT_DROP) { - ctx->nf_output_iface = prev_nf_output_iface; - } else if (prev_nf_output_iface != NF_OUT_DROP && - ctx->nf_output_iface != NF_OUT_FLOOD) { - ctx->nf_output_iface = NF_OUT_MULTI; - } -} - -static void -xlate_output_action(struct action_xlate_ctx *ctx, - const struct ofp_action_output *oao) -{ - xlate_output_action__(ctx, ntohs(oao->port), ntohs(oao->max_len)); -} - -/* If the final ODP action in 'ctx' is "pop priority", drop it, as an - * optimization, because we're going to add another action that sets the - * priority immediately after, or because there are no actions following the - * pop. */ -static void -remove_pop_action(struct action_xlate_ctx *ctx) -{ - if (ctx->odp_actions->size == ctx->last_pop_priority) { - ctx->odp_actions->size -= NLA_ALIGN(NLA_HDRLEN); - ctx->last_pop_priority = -1; - } -} - -static void -add_pop_action(struct action_xlate_ctx *ctx) -{ - if (ctx->odp_actions->size != ctx->last_pop_priority) { - nl_msg_put_flag(ctx->odp_actions, ODP_ACTION_ATTR_POP_PRIORITY); - ctx->last_pop_priority = ctx->odp_actions->size; - } -} - -static void -xlate_enqueue_action(struct action_xlate_ctx *ctx, - const struct ofp_action_enqueue *oae) -{ - uint16_t ofp_port, odp_port; - uint32_t priority; - int error; - - error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(oae->queue_id), - &priority); - if (error) { - /* Fall back to ordinary output action. */ - xlate_output_action__(ctx, ntohs(oae->port), 0); - return; - } - - /* Figure out ODP output port. */ - ofp_port = ntohs(oae->port); - if (ofp_port != OFPP_IN_PORT) { - odp_port = ofp_port_to_odp_port(ofp_port); - } else { - odp_port = ctx->flow.in_port; - } - - /* Add ODP actions. */ - remove_pop_action(ctx); - nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_SET_PRIORITY, priority); - add_output_action(ctx, odp_port); - add_pop_action(ctx); - - /* Update NetFlow output port. */ - if (ctx->nf_output_iface == NF_OUT_DROP) { - ctx->nf_output_iface = odp_port; - } else if (ctx->nf_output_iface != NF_OUT_FLOOD) { - ctx->nf_output_iface = NF_OUT_MULTI; - } -} - -static void -xlate_set_queue_action(struct action_xlate_ctx *ctx, - const struct nx_action_set_queue *nasq) + * 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, 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) +send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh, + int error) { - if (ctx->flow.vlan_tci != state->vlan_tci) { - xlate_set_dl_tci(ctx); - } - if (ctx->flow.tun_id != state->tun_id) { - nl_msg_put_be64(ctx->odp_actions, - ODP_ACTION_ATTR_SET_TUNNEL, ctx->flow.tun_id); + struct ofpbuf *buf = ofputil_encode_error_msg(error, oh); + if (buf) { + COVERAGE_INC(ofproto_error); + ofconn_send_reply(ofconn, buf); } } -static void -xlate_nicira_action(struct action_xlate_ctx *ctx, - const struct nx_action_header *nah) -{ - const struct nx_action_resubmit *nar; - const struct nx_action_set_tunnel *nast; - const struct nx_action_set_queue *nasq; - const struct nx_action_multipath *nam; - const struct nx_action_autopath *naa; - enum nx_action_subtype subtype = ntohs(nah->subtype); - const struct ofhooks *ofhooks = ctx->ofproto->ofhooks; - struct xlate_reg_state state; - uint16_t autopath_port; - ovs_be64 tun_id; - - assert(nah->vendor == htonl(NX_VENDOR_ID)); - switch (subtype) { - case NXAST_RESUBMIT: - nar = (const struct nx_action_resubmit *) nah; - xlate_table_action(ctx, ofp_port_to_odp_port(ntohs(nar->in_port))); - break; - - case NXAST_SET_TUNNEL: - nast = (const struct nx_action_set_tunnel *) nah; - tun_id = htonll(ntohl(nast->tun_id)); - nl_msg_put_be64(ctx->odp_actions, ODP_ACTION_ATTR_SET_TUNNEL, tun_id); - ctx->flow.tun_id = tun_id; - break; - - case NXAST_DROP_SPOOFED_ARP: - if (ctx->flow.dl_type == htons(ETH_TYPE_ARP)) { - nl_msg_put_flag(ctx->odp_actions, - ODP_ACTION_ATTR_DROP_SPOOFED_ARP); - } - break; - - case NXAST_SET_QUEUE: - nasq = (const struct nx_action_set_queue *) nah; - xlate_set_queue_action(ctx, nasq); - break; - - case NXAST_POP_QUEUE: - add_pop_action(ctx); - break; - - case NXAST_REG_MOVE: - save_reg_state(ctx, &state); - nxm_execute_reg_move((const struct nx_action_reg_move *) nah, - &ctx->flow); - update_reg_state(ctx, &state); - break; - - case NXAST_REG_LOAD: - save_reg_state(ctx, &state); - nxm_execute_reg_load((const struct nx_action_reg_load *) nah, - &ctx->flow); - update_reg_state(ctx, &state); - break; - - case NXAST_NOTE: - /* Nothing to do. */ - break; - - case NXAST_SET_TUNNEL64: - tun_id = ((const struct nx_action_set_tunnel64 *) nah)->tun_id; - nl_msg_put_be64(ctx->odp_actions, ODP_ACTION_ATTR_SET_TUNNEL, tun_id); - ctx->flow.tun_id = tun_id; - break; - - case NXAST_MULTIPATH: - nam = (const struct nx_action_multipath *) nah; - multipath_execute(nam, &ctx->flow); - break; - - case NXAST_AUTOPATH: - naa = (const struct nx_action_autopath *) nah; - autopath_port = (ofhooks->autopath_cb - ? ofhooks->autopath_cb(&ctx->flow, ntohl(naa->id), - &ctx->tags, ctx->ofproto->aux) - : OFPP_NONE); - autopath_execute(naa, &ctx->flow, autopath_port); - break; - - /* If you add a new action here that modifies flow data, don't forget to - * update the flow key in ctx->flow at the same time. */ - - case NXAST_SNAT__OBSOLETE: - default: - VLOG_DBG_RL(&rl, "unknown Nicira action type %d", (int) subtype); - break; - } +static int +handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) +{ + ofconn_send_reply(ofconn, make_echo_reply(oh)); + return 0; } -static void -do_xlate_actions(const union ofp_action *in, size_t n_in, - struct action_xlate_ctx *ctx) +static int +handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) { - struct actions_iterator iter; - const union ofp_action *ia; - const struct ofport *port; - - port = get_port(ctx->ofproto, ctx->flow.in_port); - if (port && port->opp.config & (OFPPC_NO_RECV | OFPPC_NO_RECV_STP) && - port->opp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp) - ? OFPPC_NO_RECV_STP : OFPPC_NO_RECV)) { - /* Drop this flow. */ - return; - } - - for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) { - enum ofp_action_type type = ntohs(ia->type); - const struct ofp_action_dl_addr *oada; - - switch (type) { - case OFPAT_OUTPUT: - xlate_output_action(ctx, &ia->output); - break; - - case OFPAT_SET_VLAN_VID: - ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK); - ctx->flow.vlan_tci |= ia->vlan_vid.vlan_vid | htons(VLAN_CFI); - xlate_set_dl_tci(ctx); - break; + struct ofproto *ofproto = ofconn_get_ofproto(ofconn); + struct ofp_switch_features *osf; + struct ofpbuf *buf; + struct ofport *port; + bool arp_match_ip; + uint32_t actions; - case OFPAT_SET_VLAN_PCP: - ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK); - ctx->flow.vlan_tci |= htons( - (ia->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT) | VLAN_CFI); - xlate_set_dl_tci(ctx); - break; + ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, &actions); + assert(actions & (1 << OFPAT_OUTPUT)); /* sanity check */ - case OFPAT_STRIP_VLAN: - ctx->flow.vlan_tci = htons(0); - xlate_set_dl_tci(ctx); - break; + osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf); + osf->datapath_id = htonll(ofproto->datapath_id); + osf->n_buffers = htonl(pktbuf_capacity()); + osf->n_tables = ofproto->n_tables; + osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS | + OFPC_PORT_STATS); + if (arp_match_ip) { + osf->capabilities |= htonl(OFPC_ARP_MATCH_IP); + } + osf->actions = htonl(actions); - case OFPAT_SET_DL_SRC: - oada = ((struct ofp_action_dl_addr *) ia); - nl_msg_put_unspec(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_SRC, - oada->dl_addr, ETH_ADDR_LEN); - memcpy(ctx->flow.dl_src, oada->dl_addr, ETH_ADDR_LEN); - break; + HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { + ofpbuf_put(buf, &port->opp, sizeof port->opp); + } - case OFPAT_SET_DL_DST: - oada = ((struct ofp_action_dl_addr *) ia); - nl_msg_put_unspec(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_DST, - oada->dl_addr, ETH_ADDR_LEN); - memcpy(ctx->flow.dl_dst, oada->dl_addr, ETH_ADDR_LEN); - break; + ofconn_send_reply(ofconn, buf); + return 0; +} - case OFPAT_SET_NW_SRC: - nl_msg_put_be32(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_SRC, - ia->nw_addr.nw_addr); - ctx->flow.nw_src = ia->nw_addr.nw_addr; - break; +static int +handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) +{ + struct ofproto *ofproto = ofconn_get_ofproto(ofconn); + struct ofpbuf *buf; + struct ofp_switch_config *osc; + uint16_t flags; + bool drop_frags; - case OFPAT_SET_NW_DST: - nl_msg_put_be32(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_DST, - ia->nw_addr.nw_addr); - ctx->flow.nw_dst = ia->nw_addr.nw_addr; - break; + /* Figure out flags. */ + drop_frags = ofproto->ofproto_class->get_drop_frags(ofproto); + flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL; - case OFPAT_SET_NW_TOS: - nl_msg_put_u8(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_TOS, - ia->nw_tos.nw_tos); - ctx->flow.nw_tos = ia->nw_tos.nw_tos; - break; + /* Send reply. */ + osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf); + osc->flags = htons(flags); + osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); + ofconn_send_reply(ofconn, buf); - case OFPAT_SET_TP_SRC: - nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_TP_SRC, - ia->tp_port.tp_port); - ctx->flow.tp_src = ia->tp_port.tp_port; - break; + return 0; +} - case OFPAT_SET_TP_DST: - nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_TP_DST, - ia->tp_port.tp_port); - ctx->flow.tp_dst = ia->tp_port.tp_port; - break; +static int +handle_set_config(struct ofconn *ofconn, const struct ofp_switch_config *osc) +{ + struct ofproto *ofproto = ofconn_get_ofproto(ofconn); + uint16_t flags = ntohs(osc->flags); - case OFPAT_VENDOR: - xlate_nicira_action(ctx, (const struct nx_action_header *) ia); + if (ofconn_get_type(ofconn) == OFCONN_PRIMARY + && ofconn_get_role(ofconn) != NX_ROLE_SLAVE) { + switch (flags & OFPC_FRAG_MASK) { + case OFPC_FRAG_NORMAL: + ofproto->ofproto_class->set_drop_frags(ofproto, false); break; - - case OFPAT_ENQUEUE: - xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia); + case OFPC_FRAG_DROP: + ofproto->ofproto_class->set_drop_frags(ofproto, true); break; - default: - VLOG_DBG_RL(&rl, "unknown action type %d", (int) type); + VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")", + osc->flags); break; } } -} - -static void -action_xlate_ctx_init(struct action_xlate_ctx *ctx, - struct ofproto *ofproto, const struct flow *flow, - const struct ofpbuf *packet) -{ - ctx->ofproto = ofproto; - ctx->flow = *flow; - ctx->packet = packet; - ctx->resubmit_hook = NULL; - ctx->check_special = true; -} - -static void -ofproto_process_cfm(struct ofproto *ofproto, const struct flow *flow, - const struct ofpbuf *packet) -{ - struct ofport *ofport; - - ofport = get_port(ofproto, flow->in_port); - if (ofport && ofport->cfm) { - cfm_process_heartbeat(ofport->cfm, packet); - } -} - -static struct ofpbuf * -xlate_actions(struct action_xlate_ctx *ctx, - const union ofp_action *in, size_t n_in) -{ - COVERAGE_INC(ofproto_ofp2odp); - - ctx->odp_actions = ofpbuf_new(512); - ctx->tags = 0; - ctx->may_set_up_flow = true; - ctx->nf_output_iface = NF_OUT_DROP; - ctx->recurse = 0; - ctx->last_pop_priority = -1; - - if (ctx->check_special && cfm_should_process_flow(&ctx->flow)) { - if (ctx->packet) { - ofproto_process_cfm(ctx->ofproto, &ctx->flow, ctx->packet); - } - ctx->may_set_up_flow = false; - } else if (ctx->check_special - && ctx->ofproto->ofhooks->special_cb - && !ctx->ofproto->ofhooks->special_cb(&ctx->flow, ctx->packet, - ctx->ofproto->aux)) { - ctx->may_set_up_flow = false; - } else { - do_xlate_actions(in, n_in, ctx); - } - remove_pop_action(ctx); - - /* Check with in-band control to see if we're allowed to set up this - * flow. */ - if (!connmgr_may_set_up_flow(ctx->ofproto->connmgr, &ctx->flow, - ctx->odp_actions->data, - ctx->odp_actions->size)) { - ctx->may_set_up_flow = false; - } + ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); - return ctx->odp_actions; + return 0; } /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow @@ -2561,8 +1473,6 @@ handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) 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; @@ -2600,47 +1510,34 @@ handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) buffer = NULL; } - /* Extract flow, check actions. */ - flow_extract(&payload, 0, ofp_port_to_odp_port(ntohs(opo->in_port)), - &flow); - error = validate_actions(ofp_actions, n_ofp_actions, &flow, p->max_ports); - if (error) { - goto exit; - } - - /* Send. */ - action_xlate_ctx_init(&ctx, p, &flow, &payload); - odp_actions = xlate_actions(&ctx, ofp_actions, n_ofp_actions); - dpif_execute(p->dpif, odp_actions->data, odp_actions->size, &payload); - ofpbuf_delete(odp_actions); - -exit: + /* Send out packet. */ + flow_extract(&payload, 0, ntohs(opo->in_port), &flow); + error = p->ofproto_class->packet_out(p, &payload, &flow, + ofp_actions, n_ofp_actions); ofpbuf_delete(buffer); - return 0; + + return error; } static void -update_port_config(struct ofproto *p, struct ofport *port, - uint32_t config, uint32_t 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 & OFPPC_PORT_DOWN) { - if (config & OFPPC_PORT_DOWN) { + if (mask & htonl(OFPPC_PORT_DOWN)) { + if (config & htonl(OFPPC_PORT_DOWN)) { netdev_turn_flags_off(port->netdev, NETDEV_UP, true); } else { netdev_turn_flags_on(port->netdev, NETDEV_UP, true); } } -#define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | \ - OFPPC_NO_FWD | OFPPC_NO_FLOOD) - if (mask & REVALIDATE_BITS) { - COVERAGE_INC(ofproto_costly_flags); - port->opp.config ^= mask & REVALIDATE_BITS; - p->need_revalidate = true; - } -#undef REVALIDATE_BITS - if (mask & OFPPC_NO_PACKET_IN) { - port->opp.config ^= 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); } } @@ -2657,13 +1554,13 @@ handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) 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, ntohl(opm->config), ntohl(opm->mask)); + update_port_config(port, opm->config, opm->mask); if (opm->advertise) { netdev_set_advertisements(port->netdev, ntohl(opm->advertise)); } @@ -2771,18 +1668,20 @@ handle_table_stats_request(struct ofconn *ofconn, struct ofproto *p = ofconn_get_ofproto(ofconn); struct ofp_table_stats *ots; struct ofpbuf *msg; + size_t i; - msg = start_ofp_stats_reply(request, sizeof *ots * 2); + msg = start_ofp_stats_reply(request, sizeof *ots * p->n_tables); - /* Classifier table. */ - ots = append_ofp_stats_reply(sizeof *ots, ofconn, &msg); - memset(ots, 0, sizeof *ots); - strcpy(ots->name, "classifier"); - ots->wildcards = htonl(OFPFW_ALL); - ots->max_entries = htonl(1024 * 1024); /* An arbitrary big number. */ - ots->active_count = htonl(classifier_count(&p->cls)); - put_32aligned_be64(&ots->lookup_count, htonll(0)); /* XXX */ - put_32aligned_be64(&ots->matched_count, htonll(0)); /* XXX */ + ots = ofpbuf_put_zeros(msg, sizeof *ots * p->n_tables); + for (i = 0; i < p->n_tables; i++) { + ots[i].table_id = i; + sprintf(ots[i].name, "table%d", i); + ots[i].wildcards = htonl(OFPFW_ALL); + ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ + ots[i].active_count = htonl(classifier_count(&p->tables[i])); + } + + p->ofproto_class->get_tables(p, ots); ofconn_send_reply(ofconn, msg); return 0; @@ -2801,7 +1700,7 @@ append_port_stat(struct ofport *port, struct ofconn *ofconn, netdev_get_stats(port->netdev, &stats); ops = append_ofp_stats_reply(sizeof *ops, ofconn, msgp); - ops->port_no = htons(port->opp.port_no); + ops->port_no = port->opp.port_no; memset(ops->pad, 0, sizeof ops->pad); put_32aligned_be64(&ops->rx_packets, htonll(stats.rx_packets)); put_32aligned_be64(&ops->tx_packets, htonll(stats.tx_packets)); @@ -2828,7 +1727,7 @@ handle_port_stats_request(struct ofconn *ofconn, const struct ofp_header *oh) msg = start_ofp_stats_reply(oh, sizeof *ops * 16); if (psr->port_no != htons(OFPP_NONE)) { - port = get_port(p, ofp_port_to_odp_port(ntohs(psr->port_no))); + port = ofproto_get_port(p, ntohs(psr->port_no)); if (port) { append_port_stat(port, ofconn, &msg); } @@ -2864,6 +1763,7 @@ static void put_ofp_flow_stats(struct ofconn *ofconn, struct rule *rule, ovs_be16 out_port, struct ofpbuf **replyp) { + struct ofproto *ofproto = ofconn_get_ofproto(ofconn); struct ofp_flow_stats *ofs; uint64_t packet_count, byte_count; size_t act_len, len; @@ -2875,11 +1775,11 @@ put_ofp_flow_stats(struct ofconn *ofconn, struct rule *rule, act_len = sizeof *rule->actions * rule->n_actions; len = offsetof(struct ofp_flow_stats, actions) + act_len; - rule_get_stats(rule, &packet_count, &byte_count); + ofproto->ofproto_class->rule_get_stats(rule, &packet_count, &byte_count); ofs = append_ofp_stats_reply(len, ofconn, replyp); ofs->length = htons(len); - ofs->table_id = 0; + ofs->table_id = rule->table_id; ofs->pad = 0; ofputil_cls_rule_to_match(&rule->cr, &ofs->match); put_32aligned_be64(&ofs->cookie, rule->flow_cookie); @@ -2895,37 +1795,68 @@ put_ofp_flow_stats(struct ofconn *ofconn, struct rule *rule, } } -static bool -is_valid_table(uint8_t table_id) +static struct classifier * +first_matching_table(struct ofproto *ofproto, uint8_t table_id) { - if (table_id == 0 || table_id == 0xff) { - return true; + if (table_id == 0xff) { + return &ofproto->tables[0]; + } else if (table_id < ofproto->n_tables) { + return &ofproto->tables[table_id]; } else { /* It would probably be better to reply with an error but there doesn't * seem to be any appropriate value, so that might just be * confusing. */ VLOG_WARN_RL(&rl, "controller asked for invalid table %"PRIu8, table_id); - return false; + return NULL; } } +static struct classifier * +next_matching_table(struct ofproto *ofproto, + struct classifier *cls, uint8_t table_id) +{ + return (table_id == 0xff && cls != &ofproto->tables[ofproto->n_tables - 1] + ? cls + 1 + : NULL); +} + +/* Assigns CLS to each classifier table, in turn, that matches TABLE_ID in + * OFPROTO: + * + * - If TABLE_ID is 0xff, this iterates over every classifier table in + * OFPROTO. + * + * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates + * only once, for that table. + * + * - Otherwise, TABLE_ID isn't valid for OFPROTO, so ofproto logs a warning + * and does not enter the loop at all. + * + * All parameters are evaluated multiple times. + */ +#define FOR_EACH_MATCHING_TABLE(CLS, TABLE_ID, OFPROTO) \ + for ((CLS) = first_matching_table(OFPROTO, TABLE_ID); \ + (CLS) != NULL; \ + (CLS) = next_matching_table(OFPROTO, CLS, TABLE_ID)) + static int handle_flow_stats_request(struct ofconn *ofconn, const struct ofp_header *oh) { const struct ofp_flow_stats_request *fsr = ofputil_stats_body(oh); struct ofproto *ofproto = ofconn_get_ofproto(ofconn); + struct classifier *cls; + struct cls_rule target; struct ofpbuf *reply; COVERAGE_INC(ofproto_flows_req); reply = start_ofp_stats_reply(oh, 1024); - if (is_valid_table(fsr->table_id)) { + ofputil_cls_rule_from_match(&fsr->match, 0, &target); + FOR_EACH_MATCHING_TABLE (cls, fsr->table_id, ofproto) { struct cls_cursor cursor; - struct cls_rule target; struct rule *rule; - ofputil_cls_rule_from_match(&fsr->match, 0, &target); - cls_cursor_init(&cursor, &ofproto->cls, &target); + cls_cursor_init(&cursor, cls, &target); CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { put_ofp_flow_stats(ofconn, rule, fsr->out_port, &reply); } @@ -2948,7 +1879,8 @@ put_nx_flow_stats(struct ofconn *ofconn, struct rule *rule, return; } - rule_get_stats(rule, &packet_count, &byte_count); + rule->ofproto->ofproto_class->rule_get_stats(rule, + &packet_count, &byte_count); act_len = sizeof *rule->actions * rule->n_actions; @@ -2979,6 +1911,7 @@ handle_nxst_flow(struct ofconn *ofconn, const struct ofp_header *oh) { struct ofproto *ofproto = ofconn_get_ofproto(ofconn); struct nx_flow_stats_request *nfsr; + struct classifier *cls; struct cls_rule target; struct ofpbuf *reply; struct ofpbuf b; @@ -2998,11 +1931,11 @@ handle_nxst_flow(struct ofconn *ofconn, const struct ofp_header *oh) COVERAGE_INC(ofproto_flows_req); reply = start_nxstats_reply(&nfsr->nsm, 1024); - if (is_valid_table(nfsr->table_id)) { + FOR_EACH_MATCHING_TABLE (cls, nfsr->table_id, ofproto) { struct cls_cursor cursor; struct rule *rule; - cls_cursor_init(&cursor, &ofproto->cls, &target); + cls_cursor_init(&cursor, cls, &target); CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { put_nx_flow_stats(ofconn, rule, nfsr->out_port, &reply); } @@ -3018,11 +1951,14 @@ 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); @@ -3041,15 +1977,28 @@ flow_stats_ds(struct rule *rule, struct ds *results) void ofproto_get_all_flows(struct ofproto *p, struct ds *results) { - struct cls_cursor cursor; - struct rule *rule; + struct classifier *cls; + + for (cls = &p->tables[0]; cls < &p->tables[p->n_tables]; cls++) { + struct cls_cursor cursor; + struct rule *rule; - cls_cursor_init(&cursor, &p->cls, NULL); - CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { - flow_stats_ds(rule, results); + cls_cursor_init(&cursor, cls, NULL); + CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { + flow_stats_ds(rule, results); + } } } +/* Obtains the NetFlow engine type and engine ID for 'ofproto' into + * '*engine_type' and '*engine_id', respectively. */ +void +ofproto_get_netflow_ids(const struct ofproto *ofproto, + uint8_t *engine_type, uint8_t *engine_id) +{ + ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); +} + static void query_aggregate_stats(struct ofproto *ofproto, struct cls_rule *target, ovs_be16 out_port, uint8_t table_id, @@ -3057,21 +2006,23 @@ query_aggregate_stats(struct ofproto *ofproto, struct cls_rule *target, { uint64_t total_packets = 0; uint64_t total_bytes = 0; + struct classifier *cls; int n_flows = 0; COVERAGE_INC(ofproto_agg_request); - if (is_valid_table(table_id)) { + FOR_EACH_MATCHING_TABLE (cls, table_id, ofproto) { struct cls_cursor cursor; struct rule *rule; - cls_cursor_init(&cursor, &ofproto->cls, target); + cls_cursor_init(&cursor, cls, target); CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { if (!rule_is_hidden(rule) && rule_has_out_port(rule, out_port)) { uint64_t packet_count; uint64_t byte_count; - rule_get_stats(rule, &packet_count, &byte_count); + ofproto->ofproto_class->rule_get_stats(rule, &packet_count, + &byte_count); total_packets += packet_count; total_bytes += byte_count; @@ -3153,7 +2104,7 @@ put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, struct ofp_queue_stats *reply; reply = append_ofp_stats_reply(sizeof *reply, cbdata->ofconn, &cbdata->msg); - reply->port_no = htons(cbdata->ofport->opp.port_no); + reply->port_no = cbdata->ofport->opp.port_no; memset(reply->pad, 0, sizeof reply->pad); reply->queue_id = htonl(queue_id); put_32aligned_be64(&reply->tx_bytes, htonll(stats->tx_bytes)); @@ -3214,8 +2165,8 @@ handle_queue_stats_request(struct ofconn *ofconn, const struct ofp_header *oh) 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); } @@ -3228,99 +2179,6 @@ handle_queue_stats_request(struct ofconn *ofconn, const struct ofp_header *oh) return 0; } -/* Updates 'facet''s used time. Caller is responsible for calling - * facet_push_stats() to update the flows which 'facet' resubmits into. */ -static void -facet_update_time(struct ofproto *ofproto, struct facet *facet, - long long int used) -{ - if (used > facet->used) { - facet->used = used; - if (used > facet->rule->used) { - facet->rule->used = used; - } - netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, used); - } -} - -/* Folds the statistics from 'stats' into the counters in 'facet'. - * - * Because of the meaning of a facet's counters, it only makes sense to do this - * if 'stats' are not tracked in the datapath, that is, if 'stats' represents a - * packet that was sent by hand or if it represents statistics that have been - * cleared out of the datapath. */ -static void -facet_update_stats(struct ofproto *ofproto, struct facet *facet, - const struct dpif_flow_stats *stats) -{ - if (stats->n_packets || stats->used > facet->used) { - facet_update_time(ofproto, facet, stats->used); - facet->packet_count += stats->n_packets; - facet->byte_count += stats->n_bytes; - facet_push_stats(ofproto, facet); - netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags); - } -} - -static void -facet_push_stats(struct ofproto *ofproto, struct facet *facet) -{ - uint64_t rs_packets, rs_bytes; - - assert(facet->packet_count >= facet->rs_packet_count); - assert(facet->byte_count >= facet->rs_byte_count); - assert(facet->used >= facet->rs_used); - - rs_packets = facet->packet_count - facet->rs_packet_count; - rs_bytes = facet->byte_count - facet->rs_byte_count; - - if (rs_packets || rs_bytes || facet->used > facet->rs_used) { - facet->rs_packet_count = facet->packet_count; - facet->rs_byte_count = facet->byte_count; - facet->rs_used = facet->used; - - flow_push_stats(ofproto, facet->rule, &facet->flow, - rs_packets, rs_bytes, facet->used); - } -} - -struct ofproto_push { - struct action_xlate_ctx ctx; - uint64_t packets; - uint64_t bytes; - long long int used; -}; - -static void -push_resubmit(struct action_xlate_ctx *ctx, struct rule *rule) -{ - struct ofproto_push *push = CONTAINER_OF(ctx, struct ofproto_push, ctx); - - if (rule) { - rule->packet_count += push->packets; - rule->byte_count += push->bytes; - rule->used = MAX(push->used, rule->used); - } -} - -/* Pushes flow statistics to the rules which 'flow' resubmits into given - * 'rule''s actions. */ -static void -flow_push_stats(struct ofproto *ofproto, const struct rule *rule, - struct flow *flow, uint64_t packets, uint64_t bytes, - long long int used) -{ - struct ofproto_push push; - - push.packets = packets; - push.bytes = bytes; - push.used = used; - - action_xlate_ctx_init(&push.ctx, ofproto, flow, NULL); - push.ctx.resubmit_hook = push_resubmit; - ofpbuf_delete(xlate_actions(&push.ctx, rule->actions, rule->n_actions)); -} - /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT * in which no matching flow already exists in the flow table. * @@ -3337,43 +2195,70 @@ add_flow(struct ofconn *ofconn, struct flow_mod *fm) struct ofpbuf *packet; struct rule *rule; uint16_t in_port; + int buf_err; int error; - if (fm->flags & OFPFF_CHECK_OVERLAP - && classifier_rule_overlaps(&p->cls, &fm->cr)) { - return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP); + if (fm->flags & OFPFF_CHECK_OVERLAP) { + struct classifier *cls; + + FOR_EACH_MATCHING_TABLE (cls, fm->table_id, p) { + if (classifier_rule_overlaps(cls, &fm->cr)) { + return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP); + } + } } - error = 0; - if (fm->buffer_id != UINT32_MAX) { - error = ofconn_pktbuf_retrieve(ofconn, fm->buffer_id, - &packet, &in_port); - } else { - packet = NULL; - in_port = UINT16_MAX; + buf_err = ofconn_pktbuf_retrieve(ofconn, fm->buffer_id, &packet, &in_port); + error = rule_create(p, &fm->cr, fm->actions, fm->n_actions, + fm->idle_timeout, fm->hard_timeout, fm->cookie, + fm->flags & OFPFF_SEND_FLOW_REM, &rule); + if (error) { + ofpbuf_delete(packet); + return error; } - rule = rule_create(&fm->cr, fm->actions, fm->n_actions, - fm->idle_timeout, fm->hard_timeout, fm->cookie, - fm->flags & OFPFF_SEND_FLOW_REM); - rule_insert(p, rule); if (packet) { - rule_execute(p, rule, in_port, packet); + assert(!buf_err); + return rule_execute(rule, in_port, packet); } - return error; + return buf_err; } -static struct rule * -find_flow_strict(struct ofproto *p, const struct flow_mod *fm) +/* Searches 'p' for an exact match for 'fm', in the table or tables indicated + * by fm->table_id. Returns 0 if no match was found, 1 if exactly one match + * was found, 2 if more than one match was found. If exactly one match is + * found, sets '*rulep' to the match, otherwise to NULL. + * + * This implements the rules for "strict" matching explained in the comment on + * struct nxt_flow_mod_table_id in nicira-ext.h. + * + * Ignores hidden rules. */ +static int +find_flow_strict(struct ofproto *p, const struct flow_mod *fm, + struct rule **rulep) { - return rule_from_cls_rule(classifier_find_rule_exactly(&p->cls, &fm->cr)); + struct classifier *cls; + + *rulep = NULL; + FOR_EACH_MATCHING_TABLE (cls, fm->table_id, p) { + struct rule *rule; + + rule = rule_from_cls_rule(classifier_find_rule_exactly(cls, &fm->cr)); + if (rule && !rule_is_hidden(rule)) { + if (*rulep) { + *rulep = NULL; + return 2; + } + *rulep = rule; + } + } + return *rulep != NULL; } static int send_buffered_packet(struct ofconn *ofconn, struct rule *rule, uint32_t buffer_id) { - struct ofproto *ofproto = ofconn_get_ofproto(ofconn); struct ofpbuf *packet; uint16_t in_port; int error; @@ -3387,9 +2272,7 @@ send_buffered_packet(struct ofconn *ofconn, return error; } - rule_execute(ofproto, rule, in_port, packet); - - return 0; + return rule_execute(rule, in_port, packet); } /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ @@ -3400,8 +2283,7 @@ struct modify_flows_cbdata { struct rule *match; }; -static int modify_flow(struct ofproto *, const struct flow_mod *, - struct rule *); +static int modify_flow(const struct flow_mod *, struct rule *); /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as * encoded by ofp_mkerr() on failure. @@ -3413,18 +2295,30 @@ modify_flows_loose(struct ofconn *ofconn, struct flow_mod *fm) { struct ofproto *p = ofconn_get_ofproto(ofconn); struct rule *match = NULL; - struct cls_cursor cursor; - struct rule *rule; + struct classifier *cls; + int error; + + error = 0; + FOR_EACH_MATCHING_TABLE (cls, fm->table_id, p) { + struct cls_cursor cursor; + struct rule *rule; - cls_cursor_init(&cursor, &p->cls, &fm->cr); - CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { - if (!rule_is_hidden(rule)) { - match = rule; - modify_flow(p, fm, rule); + cls_cursor_init(&cursor, cls, &fm->cr); + CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { + if (!rule_is_hidden(rule)) { + int retval = modify_flow(fm, rule); + if (!retval) { + match = rule; + } else { + error = retval; + } + } } } - if (match) { + if (error) { + return error; + } else if (match) { /* This credits the packet to whichever flow happened to match last. * That's weird. Maybe we should do a lookup for the flow that * actually matches the packet? Who knows. */ @@ -3444,57 +2338,79 @@ static int modify_flow_strict(struct ofconn *ofconn, struct flow_mod *fm) { struct ofproto *p = ofconn_get_ofproto(ofconn); - struct rule *rule = find_flow_strict(p, fm); - if (rule && !rule_is_hidden(rule)) { - modify_flow(p, fm, rule); - return send_buffered_packet(ofconn, rule, fm->buffer_id); - } else { + struct rule *rule; + int error; + + switch (find_flow_strict(p, fm, &rule)) { + case 0: return add_flow(ofconn, fm); + + case 1: + error = modify_flow(fm, rule); + if (!error) { + error = send_buffered_packet(ofconn, rule, fm->buffer_id); + } + return error; + + case 2: + return 0; + + default: + NOT_REACHED(); } } /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has - * been identified as a flow in 'p''s flow table to be modified, by changing - * the rule's actions to match those in 'ofm' (which is followed by 'n_actions' - * ofp_action[] structures). */ + * been identified as a flow to be modified, by changing the rule's actions to + * match those in 'ofm' (which is followed by 'n_actions' ofp_action[] + * structures). */ static int -modify_flow(struct ofproto *p, const struct flow_mod *fm, struct rule *rule) +modify_flow(const struct flow_mod *fm, struct rule *rule) { size_t actions_len = fm->n_actions * sizeof *rule->actions; + int error; - rule->flow_cookie = fm->cookie; - - /* If the actions are the same, do nothing. */ if (fm->n_actions == rule->n_actions && (!fm->n_actions || !memcmp(fm->actions, rule->actions, actions_len))) { - return 0; + error = 0; + } else { + error = rule->ofproto->ofproto_class->rule_modify_actions( + rule, fm->actions, fm->n_actions); + if (!error) { + free(rule->actions); + rule->actions = (fm->n_actions + ? xmemdup(fm->actions, actions_len) + : NULL); + rule->n_actions = fm->n_actions; + } } - /* Replace actions. */ - free(rule->actions); - rule->actions = fm->n_actions ? xmemdup(fm->actions, actions_len) : NULL; - rule->n_actions = fm->n_actions; - - p->need_revalidate = true; + if (!error) { + rule->flow_cookie = fm->cookie; + } - return 0; + return error; } /* OFPFC_DELETE implementation. */ -static void delete_flow(struct ofproto *, struct rule *, ovs_be16 out_port); +static void delete_flow(struct rule *, ovs_be16 out_port); /* Implements OFPFC_DELETE. */ static void delete_flows_loose(struct ofproto *p, const struct flow_mod *fm) { - struct rule *rule, *next_rule; - struct cls_cursor cursor; + struct classifier *cls; + + FOR_EACH_MATCHING_TABLE (cls, fm->table_id, p) { + struct rule *rule, *next_rule; + struct cls_cursor cursor; - cls_cursor_init(&cursor, &p->cls, &fm->cr); - CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { - delete_flow(p, rule, htons(fm->out_port)); + cls_cursor_init(&cursor, cls, &fm->cr); + CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { + delete_flow(rule, htons(fm->out_port)); + } } } @@ -3502,9 +2418,9 @@ delete_flows_loose(struct ofproto *p, const struct flow_mod *fm) static void delete_flow_strict(struct ofproto *p, struct flow_mod *fm) { - struct rule *rule = find_flow_strict(p, fm); - if (rule) { - delete_flow(p, rule, htons(fm->out_port)); + struct rule *rule; + if (find_flow_strict(p, fm, &rule) == 1) { + delete_flow(rule, htons(fm->out_port)); } } @@ -3517,7 +2433,7 @@ delete_flow_strict(struct ofproto *p, struct flow_mod *fm) * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the * specified 'out_port'. */ static void -delete_flow(struct ofproto *p, struct rule *rule, ovs_be16 out_port) +delete_flow(struct rule *rule, ovs_be16 out_port) { if (rule_is_hidden(rule)) { return; @@ -3527,8 +2443,42 @@ delete_flow(struct ofproto *p, struct rule *rule, ovs_be16 out_port) return; } - rule_send_removed(p, rule, OFPRR_DELETE); - rule_remove(p, rule); + ofproto_rule_send_removed(rule, OFPRR_DELETE); + ofproto_rule_destroy(rule); +} + +static void +ofproto_rule_send_removed(struct rule *rule, uint8_t reason) +{ + struct ofputil_flow_removed fr; + + if (rule_is_hidden(rule) || !rule->send_flow_removed) { + return; + } + + fr.rule = rule->cr; + fr.cookie = rule->flow_cookie; + fr.reason = reason; + calc_flow_duration__(rule->created, &fr.duration_sec, &fr.duration_nsec); + fr.idle_timeout = rule->idle_timeout; + rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, + &fr.byte_count); + + connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); +} + +/* Sends an OpenFlow "flow removed" message with the given 'reason' (either + * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its + * ofproto. + * + * ofproto implementation ->run() functions should use this function to expire + * OpenFlow flows. */ +void +ofproto_rule_expire(struct rule *rule, uint8_t reason) +{ + assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT); + ofproto_rule_send_removed(rule, reason); + ofproto_rule_destroy(rule); } static int @@ -3543,7 +2493,8 @@ handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) return error; } - error = ofputil_decode_flow_mod(&fm, oh); + error = ofputil_decode_flow_mod(&fm, oh, + ofconn_get_flow_mod_table_id(ofconn)); if (error) { return error; } @@ -3556,12 +2507,6 @@ handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_ALL_TABLES_FULL); } - error = validate_actions(fm.actions, fm.n_actions, - &fm.cr.flow, p->max_ports); - if (error) { - return error; - } - switch (fm.command) { case OFPFC_ADD: return add_flow(ofconn, &fm); @@ -3581,6 +2526,10 @@ handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) return 0; default: + if (fm.command > 0xff) { + VLOG_WARN_RL(&rl, "flow_mod has explicit table_id but " + "flow_mod_table_id extension is not enabled"); + } return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND); } } @@ -3616,6 +2565,17 @@ handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) return 0; } +static int +handle_nxt_flow_mod_table_id(struct ofconn *ofconn, + const struct ofp_header *oh) +{ + const struct nxt_flow_mod_table_id *msg + = (const struct nxt_flow_mod_table_id *) oh; + + ofconn_set_flow_mod_table_id(ofconn, msg->set != 0); + return 0; +} + static int handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) { @@ -3692,6 +2652,9 @@ handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) 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); @@ -3769,452 +2732,12 @@ handle_openflow(struct ofconn *ofconn, struct ofpbuf *ofp_msg) COVERAGE_INC(ofproto_recv_openflow); } -static void -handle_miss_upcall(struct ofproto *p, struct dpif_upcall *upcall) -{ - struct facet *facet; - struct flow flow; - - /* Obtain in_port and tun_id, at least. */ - odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow); - - /* Set header pointers in 'flow'. */ - flow_extract(upcall->packet, flow.tun_id, flow.in_port, &flow); - - if (cfm_should_process_flow(&flow)) { - ofproto_process_cfm(p, &flow, upcall->packet); - ofpbuf_delete(upcall->packet); - return; - } else if (p->ofhooks->special_cb - && !p->ofhooks->special_cb(&flow, upcall->packet, p->aux)) { - ofpbuf_delete(upcall->packet); - return; - } - - /* Check with in-band control to see if this packet should be sent - * to the local port regardless of the flow table. */ - if (connmgr_msg_in_hook(p->connmgr, &flow, upcall->packet)) { - ofproto_send_packet(p, ODPP_LOCAL, 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 & OFPPC_NO_PACKET_IN) { - COVERAGE_INC(ofproto_no_packet_in); - /* XXX install 'drop' flow entry */ - ofpbuf_delete(upcall->packet); - return; - } - } else { - VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, - flow.in_port); - } - - COVERAGE_INC(ofproto_packet_in); - send_packet_in(p, upcall, &flow, false); - return; - } - - facet = facet_create(p, rule, &flow, upcall->packet); - } else if (!facet->may_install) { - /* The facet is not installable, that is, we need to process every - * packet, so process the current packet's actions into 'facet'. */ - facet_make_actions(p, facet, upcall->packet); - } - - if (facet->rule->cr.priority == FAIL_OPEN_PRIORITY) { - /* - * Extra-special case for fail-open mode. - * - * We are in fail-open mode and the packet matched the fail-open rule, - * but we are connected to a controller too. We should send the packet - * up to the controller in the hope that it will try to set up a flow - * and thereby allow us to exit fail-open. - * - * See the top-level comment in fail-open.c for more information. - */ - send_packet_in(p, upcall, &flow, true); - } - - facet_execute(p, facet, upcall->packet); - facet_install(p, facet, false); -} - -static void -handle_upcall(struct ofproto *p, struct dpif_upcall *upcall) -{ - struct flow flow; - - switch (upcall->type) { - case DPIF_UC_ACTION: - COVERAGE_INC(ofproto_ctlr_action); - odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow); - send_packet_in(p, upcall, &flow, false); - break; - - case DPIF_UC_SAMPLE: - if (p->sflow) { - odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow); - ofproto_sflow_received(p->sflow, upcall, &flow); - } - ofpbuf_delete(upcall->packet); - break; - - case DPIF_UC_MISS: - handle_miss_upcall(p, upcall); - break; - - case DPIF_N_UC_TYPES: - default: - VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32, upcall->type); - break; - } -} - -/* Flow expiration. */ - -static int ofproto_dp_max_idle(const struct ofproto *); -static void ofproto_update_stats(struct ofproto *); -static void rule_expire(struct ofproto *, struct rule *); -static void ofproto_expire_facets(struct ofproto *, int dp_max_idle); - -/* This function is called periodically by ofproto_run(). Its job is to - * collect updates for the flows that have been installed into the datapath, - * most importantly when they last were used, and then use that information to - * expire flows that have not been used recently. - * - * Returns the number of milliseconds after which it should be called again. */ -static int -ofproto_expire(struct ofproto *ofproto) -{ - struct rule *rule, *next_rule; - struct cls_cursor cursor; - int dp_max_idle; - - /* Update stats for each flow in the datapath. */ - ofproto_update_stats(ofproto); - - /* Expire facets that have been idle too long. */ - dp_max_idle = ofproto_dp_max_idle(ofproto); - ofproto_expire_facets(ofproto, dp_max_idle); - - /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */ - cls_cursor_init(&cursor, &ofproto->cls, NULL); - CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { - rule_expire(ofproto, rule); - } - - /* Let the hook know that we're at a stable point: all outstanding data - * in existing flows has been accounted to the account_cb. Thus, the - * hook can now reasonably do operations that depend on having accurate - * flow volume accounting (currently, that's just bond rebalancing). */ - if (ofproto->ofhooks->account_checkpoint_cb) { - ofproto->ofhooks->account_checkpoint_cb(ofproto->aux); - } - - return MIN(dp_max_idle, 1000); -} - -/* Update 'packet_count', 'byte_count', and 'used' members of installed facets. - * - * This function also pushes statistics updates to rules which each facet - * resubmits into. Generally these statistics will be accurate. However, if a - * facet changes the rule it resubmits into at some time in between - * ofproto_update_stats() runs, it is possible that statistics accrued to the - * old rule will be incorrectly attributed to the new rule. This could be - * avoided by calling ofproto_update_stats() whenever rules are created or - * deleted. However, the performance impact of making so many calls to the - * datapath do not justify the benefit of having perfectly accurate statistics. - */ -static void -ofproto_update_stats(struct ofproto *p) -{ - const struct dpif_flow_stats *stats; - struct dpif_flow_dump dump; - const struct nlattr *key; - size_t key_len; - - dpif_flow_dump_start(&dump, p->dpif); - while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) { - struct facet *facet; - struct flow flow; - - if (odp_flow_key_to_flow(key, key_len, &flow)) { - struct ds s; - - ds_init(&s); - odp_flow_key_format(key, key_len, &s); - VLOG_WARN_RL(&rl, "failed to convert ODP flow key to flow: %s", - ds_cstr(&s)); - ds_destroy(&s); - - continue; - } - facet = facet_find(p, &flow); - - if (facet && facet->installed) { - - if (stats->n_packets >= facet->dp_packet_count) { - facet->packet_count += stats->n_packets - facet->dp_packet_count; - } else { - VLOG_WARN_RL(&rl, "unexpected packet count from the datapath"); - } - - if (stats->n_bytes >= facet->dp_byte_count) { - facet->byte_count += stats->n_bytes - facet->dp_byte_count; - } else { - VLOG_WARN_RL(&rl, "unexpected byte count from datapath"); - } - - facet->dp_packet_count = stats->n_packets; - facet->dp_byte_count = stats->n_bytes; - - facet_update_time(p, facet, stats->used); - facet_account(p, facet, stats->n_bytes); - facet_push_stats(p, facet); - } else { - /* There's a flow in the datapath that we know nothing about. - * Delete it. */ - COVERAGE_INC(ofproto_unexpected_rule); - dpif_flow_del(p->dpif, key, key_len, NULL); - } - } - dpif_flow_dump_done(&dump); -} - -/* Calculates and returns the number of milliseconds of idle time after which - * facets should expire from the datapath and we should fold their statistics - * into their parent rules in userspace. */ -static int -ofproto_dp_max_idle(const struct ofproto *ofproto) -{ - /* - * Idle time histogram. - * - * Most of the time a switch has a relatively small number of facets. When - * this is the case we might as well keep statistics for all of them in - * userspace and to cache them in the kernel datapath for performance as - * well. - * - * As the number of facets increases, the memory required to maintain - * statistics about them in userspace and in the kernel becomes - * significant. However, with a large number of facets it is likely that - * only a few of them are "heavy hitters" that consume a large amount of - * bandwidth. At this point, only heavy hitters are worth caching in the - * kernel and maintaining in userspaces; other facets we can discard. - * - * The technique used to compute the idle time is to build a histogram with - * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each facet - * that is installed in the kernel gets dropped in the appropriate bucket. - * After the histogram has been built, we compute the cutoff so that only - * the most-recently-used 1% of facets (but at least 1000 flows) are kept - * cached. At least the most-recently-used bucket of facets is kept, so - * actually an arbitrary number of facets can be kept in any given - * expiration run (though the next run will delete most of those unless - * they receive additional data). - * - * This requires a second pass through the facets, in addition to the pass - * made by ofproto_update_stats(), because the former function never looks - * at uninstallable facets. - */ - enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) }; - enum { N_BUCKETS = 5000 / BUCKET_WIDTH }; - int buckets[N_BUCKETS] = { 0 }; - struct facet *facet; - int total, bucket; - long long int now; - int i; - - total = hmap_count(&ofproto->facets); - if (total <= 1000) { - return N_BUCKETS * BUCKET_WIDTH; - } - - /* Build histogram. */ - now = time_msec(); - HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) { - long long int idle = now - facet->used; - int bucket = (idle <= 0 ? 0 - : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1 - : (unsigned int) idle / BUCKET_WIDTH); - buckets[bucket]++; - } - - /* Find the first bucket whose flows should be expired. */ - for (bucket = 0; bucket < N_BUCKETS; bucket++) { - if (buckets[bucket]) { - int subtotal = 0; - do { - subtotal += buckets[bucket++]; - } while (bucket < N_BUCKETS && subtotal < MAX(1000, total / 100)); - break; - } - } - - if (VLOG_IS_DBG_ENABLED()) { - struct ds s; - - ds_init(&s); - ds_put_cstr(&s, "keep"); - for (i = 0; i < N_BUCKETS; i++) { - if (i == bucket) { - ds_put_cstr(&s, ", drop"); - } - if (buckets[i]) { - ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]); - } - } - VLOG_INFO("%s: %s (msec:count)", - dpif_name(ofproto->dpif), ds_cstr(&s)); - ds_destroy(&s); - } - - return bucket * BUCKET_WIDTH; -} - -static void -facet_active_timeout(struct ofproto *ofproto, struct facet *facet) -{ - if (ofproto->netflow && !facet_is_controller_flow(facet) && - netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) { - struct ofexpired expired; - - if (facet->installed) { - struct dpif_flow_stats stats; - - facet_put__(ofproto, facet, facet->actions, facet->actions_len, - &stats); - facet_update_stats(ofproto, facet, &stats); - } - - expired.flow = facet->flow; - expired.packet_count = facet->packet_count; - expired.byte_count = facet->byte_count; - expired.used = facet->used; - netflow_expire(ofproto->netflow, &facet->nf_flow, &expired); - } -} - -static void -ofproto_expire_facets(struct ofproto *ofproto, int dp_max_idle) -{ - long long int cutoff = time_msec() - dp_max_idle; - struct facet *facet, *next_facet; - - HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) { - facet_active_timeout(ofproto, facet); - if (facet->used < cutoff) { - facet_remove(ofproto, facet); - } - } -} - -/* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules, - * then delete it entirely. */ -static void -rule_expire(struct ofproto *ofproto, struct rule *rule) -{ - struct facet *facet, *next_facet; - long long int now; - uint8_t reason; - - /* Has 'rule' expired? */ - now = time_msec(); - if (rule->hard_timeout - && now > rule->created + rule->hard_timeout * 1000) { - reason = OFPRR_HARD_TIMEOUT; - } else if (rule->idle_timeout && list_is_empty(&rule->facets) - && now >rule->used + rule->idle_timeout * 1000) { - reason = OFPRR_IDLE_TIMEOUT; - } else { - return; - } - - COVERAGE_INC(ofproto_expired); - - /* Update stats. (This is a no-op if the rule expired due to an idle - * timeout, because that only happens when the rule has no facets left.) */ - LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) { - facet_remove(ofproto, facet); - } - - /* Get rid of the rule. */ - if (!rule_is_hidden(rule)) { - rule_send_removed(ofproto, rule, reason); - } - rule_remove(ofproto, rule); -} - -static void -rule_send_removed(struct ofproto *p, struct rule *rule, uint8_t reason) -{ - struct ofputil_flow_removed fr; - - if (!rule->send_flow_removed) { - return; - } - - fr.rule = rule->cr; - fr.cookie = rule->flow_cookie; - fr.reason = reason; - calc_flow_duration__(rule->created, &fr.duration_sec, &fr.duration_nsec); - fr.idle_timeout = rule->idle_timeout; - fr.packet_count = rule->packet_count; - fr.byte_count = rule->byte_count; - - connmgr_send_flow_removed(p->connmgr, &fr); -} - -/* Obtains statistics for 'rule' and stores them in '*packets' and '*bytes'. - * The returned statistics include statistics for all of 'rule''s facets. */ -static void -rule_get_stats(const struct rule *rule, uint64_t *packets, uint64_t *bytes) -{ - uint64_t p, b; - struct facet *facet; - - /* Start from historical data for 'rule' itself that are no longer tracked - * in facets. This counts, for example, facets that have expired. */ - p = rule->packet_count; - b = rule->byte_count; - - /* Add any statistics that are tracked by facets. This includes - * statistical data recently updated by ofproto_update_stats() as well as - * stats for packets that were executed "by hand" via dpif_execute(). */ - LIST_FOR_EACH (facet, list_node, &rule->facets) { - p += facet->packet_count; - b += facet->byte_count; - } - - *packets = p; - *bytes = b; -} - -/* Given 'upcall', of type DPIF_UC_ACTION or DPIF_UC_MISS, sends an - * OFPT_PACKET_IN message to each OpenFlow controller as necessary according to - * their individual configurations. - * - * If 'clone' is true, the caller retains ownership of 'upcall->packet'. - * Otherwise, ownership is transferred to this function. */ -static void -send_packet_in(struct ofproto *ofproto, struct dpif_upcall *upcall, - const struct flow *flow, bool clone) -{ - connmgr_send_packet_in(ofproto->connmgr, upcall, flow, - clone ? NULL : upcall->packet); -} - static uint64_t pick_datapath_id(const struct ofproto *ofproto) { const struct ofport *port; - port = get_port(ofproto, ODPP_LOCAL); + port = ofproto_get_port(ofproto, OFPP_LOCAL); if (port) { uint8_t ea[ETH_ADDR_LEN]; int error; @@ -4237,159 +2760,35 @@ pick_fallback_dpid(void) return eth_addr_to_uint64(ea); } -static void -ofproto_unixctl_list(struct unixctl_conn *conn, const char *arg OVS_UNUSED, - void *aux OVS_UNUSED) -{ - const struct shash_node *node; - struct ds results; - - ds_init(&results); - SHASH_FOR_EACH (node, &all_ofprotos) { - ds_put_format(&results, "%s\n", node->name); - } - unixctl_command_reply(conn, 200, ds_cstr(&results)); - ds_destroy(&results); -} - -struct ofproto_trace { - struct action_xlate_ctx ctx; - struct flow flow; - struct ds *result; -}; +/* unixctl commands. */ -static void -trace_format_rule(struct ds *result, int level, const struct rule *rule) +struct ofproto * +ofproto_lookup(const char *name) { - ds_put_char_multiple(result, '\t', level); - if (!rule) { - ds_put_cstr(result, "No match\n"); - return; - } - - ds_put_format(result, "Rule: cookie=%#"PRIx64" ", - ntohll(rule->flow_cookie)); - cls_rule_format(&rule->cr, result); - ds_put_char(result, '\n'); - - ds_put_char_multiple(result, '\t', level); - ds_put_cstr(result, "OpenFlow "); - ofp_print_actions(result, (const struct ofp_action_header *) rule->actions, - rule->n_actions * sizeof *rule->actions); - ds_put_char(result, '\n'); -} + struct ofproto *ofproto; -static void -trace_format_flow(struct ds *result, int level, const char *title, - struct ofproto_trace *trace) -{ - ds_put_char_multiple(result, '\t', level); - ds_put_format(result, "%s: ", title); - if (flow_equal(&trace->ctx.flow, &trace->flow)) { - ds_put_cstr(result, "unchanged"); - } else { - flow_format(result, &trace->ctx.flow); - trace->flow = trace->ctx.flow; + HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), + &all_ofprotos) { + if (!strcmp(ofproto->name, name)) { + return ofproto; + } } - ds_put_char(result, '\n'); -} - -static void -trace_resubmit(struct action_xlate_ctx *ctx, struct rule *rule) -{ - struct ofproto_trace *trace = CONTAINER_OF(ctx, struct ofproto_trace, ctx); - struct ds *result = trace->result; - - ds_put_char(result, '\n'); - trace_format_flow(result, ctx->recurse + 1, "Resubmitted flow", trace); - trace_format_rule(result, ctx->recurse + 1, rule); + return NULL; } static void -ofproto_unixctl_trace(struct unixctl_conn *conn, const char *args_, - void *aux OVS_UNUSED) +ofproto_unixctl_list(struct unixctl_conn *conn, const char *arg OVS_UNUSED, + void *aux OVS_UNUSED) { - char *dpname, *in_port_s, *tun_id_s, *packet_s; - char *args = xstrdup(args_); - char *save_ptr = NULL; struct ofproto *ofproto; - struct ofpbuf packet; - struct rule *rule; - struct ds result; - struct flow flow; - uint16_t in_port; - ovs_be64 tun_id; - char *s; - - ofpbuf_init(&packet, strlen(args) / 2); - ds_init(&result); - - dpname = strtok_r(args, " ", &save_ptr); - tun_id_s = strtok_r(NULL, " ", &save_ptr); - in_port_s = strtok_r(NULL, " ", &save_ptr); - packet_s = strtok_r(NULL, "", &save_ptr); /* Get entire rest of line. */ - if (!dpname || !in_port_s || !packet_s) { - unixctl_command_reply(conn, 501, "Bad command syntax"); - goto exit; - } - - ofproto = shash_find_data(&all_ofprotos, dpname); - if (!ofproto) { - unixctl_command_reply(conn, 501, "Unknown ofproto (use ofproto/list " - "for help)"); - goto exit; - } - - tun_id = htonll(strtoull(tun_id_s, NULL, 0)); - in_port = ofp_port_to_odp_port(atoi(in_port_s)); - - packet_s = ofpbuf_put_hex(&packet, packet_s, NULL); - packet_s += strspn(packet_s, " "); - if (*packet_s != '\0') { - unixctl_command_reply(conn, 501, "Trailing garbage in command"); - goto exit; - } - if (packet.size < ETH_HEADER_LEN) { - unixctl_command_reply(conn, 501, "Packet data too short for Ethernet"); - goto exit; - } - - ds_put_cstr(&result, "Packet: "); - s = ofp_packet_to_string(packet.data, packet.size, packet.size); - ds_put_cstr(&result, s); - free(s); - - flow_extract(&packet, tun_id, in_port, &flow); - ds_put_cstr(&result, "Flow: "); - flow_format(&result, &flow); - ds_put_char(&result, '\n'); + struct ds results; - rule = rule_lookup(ofproto, &flow); - trace_format_rule(&result, 0, rule); - if (rule) { - struct ofproto_trace trace; - struct ofpbuf *odp_actions; - - trace.result = &result; - trace.flow = flow; - action_xlate_ctx_init(&trace.ctx, ofproto, &flow, &packet); - trace.ctx.resubmit_hook = trace_resubmit; - odp_actions = xlate_actions(&trace.ctx, - rule->actions, rule->n_actions); - - ds_put_char(&result, '\n'); - trace_format_flow(&result, 0, "Final flow", &trace); - ds_put_cstr(&result, "Datapath actions: "); - format_odp_actions(&result, odp_actions->data, odp_actions->size); - ofpbuf_delete(odp_actions); + ds_init(&results); + HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { + ds_put_format(&results, "%s\n", ofproto->name); } - - unixctl_command_reply(conn, 200, ds_cstr(&result)); - -exit: - ds_destroy(&result); - ofpbuf_uninit(&packet); - free(args); + unixctl_command_reply(conn, 200, ds_cstr(&results)); + ds_destroy(&results); } static void @@ -4402,63 +2801,4 @@ ofproto_unixctl_init(void) registered = true; unixctl_command_register("ofproto/list", ofproto_unixctl_list, NULL); - unixctl_command_register("ofproto/trace", ofproto_unixctl_trace, NULL); -} - -static bool -default_normal_ofhook_cb(const struct flow *flow, const struct ofpbuf *packet, - struct ofpbuf *odp_actions, tag_type *tags, - uint16_t *nf_output_iface, void *ofproto_) -{ - struct ofproto *ofproto = ofproto_; - struct mac_entry *dst_mac; - - /* Drop frames for reserved multicast addresses. */ - if (eth_addr_is_reserved(flow->dl_dst)) { - return true; - } - - /* Learn source MAC (but don't try to learn from revalidation). */ - if (packet != NULL - && mac_learning_may_learn(ofproto->ml, flow->dl_src, 0)) { - struct mac_entry *src_mac; - - src_mac = mac_learning_insert(ofproto->ml, flow->dl_src, 0); - if (mac_entry_is_new(src_mac) || src_mac->port.i != flow->in_port) { - /* The log messages here could actually be useful in debugging, - * so keep the rate limit relatively high. */ - static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); - VLOG_DBG_RL(&rl, "learned that "ETH_ADDR_FMT" is on port %"PRIu16, - ETH_ADDR_ARGS(flow->dl_src), flow->in_port); - - ofproto_revalidate(ofproto, - mac_learning_changed(ofproto->ml, src_mac)); - src_mac->port.i = flow->in_port; - } - } - - /* Determine output port. */ - dst_mac = mac_learning_lookup(ofproto->ml, flow->dl_dst, 0, tags); - if (!dst_mac) { - flood_packets(ofproto, flow->in_port, OFPPC_NO_FLOOD, - nf_output_iface, odp_actions); - } else { - int out_port = dst_mac->port.i; - if (out_port != flow->in_port) { - nl_msg_put_u32(odp_actions, ODP_ACTION_ATTR_OUTPUT, out_port); - *nf_output_iface = out_port; - } else { - /* Drop. */ - } - } - - return true; } - -static const struct ofhooks default_ofhooks = { - default_normal_ofhook_cb, - NULL, - NULL, - NULL, - NULL -};