From: Ben Pfaff Date: Wed, 18 May 2011 21:01:13 +0000 (-0700) Subject: Merge 'next' into 'master'. X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b2fda3effc787f265b5ad5dfa967ac00627bd075;p=openvswitch Merge 'next' into 'master'. I know already that this breaks the statsfixes that were implemented by the following commits: 827ab71c97f "ofproto: Datapath statistics accounted twice." 6f1435fc8f7 "ofproto: Resubmit statistics improperly account during..." These were already broken in a previous merge. I will work on a fix. --- b2fda3effc787f265b5ad5dfa967ac00627bd075 diff --cc lib/ofp-util.c index 8a8a7b5c,2e12eb54..4618567e --- a/lib/ofp-util.c +++ b/lib/ofp-util.c @@@ -912,8 -932,9 +946,8 @@@ ofputil_decode_flow_mod(struct flow_mo } /* Translate the message. */ - ofputil_cls_rule_from_match(&match, ntohs(ofm->priority), &fm->cr); fm->cookie = ofm->cookie; - fm->command = ntohs(ofm->command); + command = ntohs(ofm->command); fm->idle_timeout = ntohs(ofm->idle_timeout); fm->hard_timeout = ntohs(ofm->hard_timeout); fm->buffer_id = ntohl(ofm->buffer_id); diff --cc ofproto/ofproto-dpif.c index 00000000,26a0fbf6..36e7213a mode 000000,100644..100644 --- a/ofproto/ofproto-dpif.c +++ b/ofproto/ofproto-dpif.c @@@ -1,0 -1,3939 +1,3931 @@@ + /* + * Copyright (c) 2009, 2010, 2011 Nicira Networks. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + #include + + #include "ofproto/private.h" + + #include + + #include "autopath.h" + #include "bond.h" + #include "byte-order.h" + #include "connmgr.h" + #include "coverage.h" + #include "cfm.h" + #include "dpif.h" + #include "dynamic-string.h" + #include "fail-open.h" + #include "hmapx.h" + #include "lacp.h" + #include "mac-learning.h" + #include "multipath.h" + #include "netdev.h" + #include "netlink.h" + #include "nx-match.h" + #include "odp-util.h" + #include "ofp-util.h" + #include "ofpbuf.h" + #include "ofp-print.h" + #include "ofproto-sflow.h" + #include "poll-loop.h" + #include "timer.h" + #include "unaligned.h" + #include "unixctl.h" + #include "vlan-bitmap.h" + #include "vlog.h" + + VLOG_DEFINE_THIS_MODULE(ofproto_dpif); + + COVERAGE_DEFINE(ofproto_dpif_ctlr_action); + COVERAGE_DEFINE(ofproto_dpif_expired); + COVERAGE_DEFINE(ofproto_dpif_no_packet_in); + COVERAGE_DEFINE(ofproto_dpif_xlate); + COVERAGE_DEFINE(facet_changed_rule); + COVERAGE_DEFINE(facet_invalidated); + COVERAGE_DEFINE(facet_revalidate); + COVERAGE_DEFINE(facet_unexpected); + + /* Maximum depth of flow table recursion (due to NXAST_RESUBMIT actions) in a + * flow translation. */ + #define MAX_RESUBMIT_RECURSION 16 + + struct ofport_dpif; + struct ofproto_dpif; + + struct rule_dpif { + struct rule up; + + long long int used; /* Time last used; time created if not used. */ + + /* 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. */ + + struct list facets; /* List of "struct facet"s. */ + }; + + static struct rule_dpif *rule_dpif_cast(const struct rule *rule) + { + return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL; + } + + static struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *ofproto, + const struct flow *flow); + + #define MAX_MIRRORS 32 + typedef uint32_t mirror_mask_t; + #define MIRROR_MASK_C(X) UINT32_C(X) + BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS); + struct ofmirror { + struct ofproto_dpif *ofproto; /* Owning ofproto. */ + size_t idx; /* In ofproto's "mirrors" array. */ + void *aux; /* Key supplied by ofproto's client. */ + char *name; /* Identifier for log messages. */ + + /* Selection criteria. */ + struct hmapx srcs; /* Contains "struct ofbundle *"s. */ + struct hmapx dsts; /* Contains "struct ofbundle *"s. */ + unsigned long *vlans; /* Bitmap of chosen VLANs, NULL selects all. */ + + /* Output (mutually exclusive). */ + struct ofbundle *out; /* Output port or NULL. */ + int out_vlan; /* Output VLAN or -1. */ + }; + + static void mirror_destroy(struct ofmirror *); + + /* A group of one or more OpenFlow ports. */ + #define OFBUNDLE_FLOOD ((struct ofbundle *) 1) + struct ofbundle { + struct ofproto_dpif *ofproto; /* Owning ofproto. */ + struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */ + void *aux; /* Key supplied by ofproto's client. */ + char *name; /* Identifier for log messages. */ + + /* Configuration. */ + struct list ports; /* Contains "struct ofport"s. */ + int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ + unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. + * NULL if all VLANs are trunked. */ + struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */ + struct bond *bond; /* Nonnull iff more than one port. */ + + /* Status. */ + bool floodable; /* True if no port has OFPPC_NO_FLOOD set. */ + + /* Port mirroring info. */ + mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */ + mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */ + mirror_mask_t mirror_out; /* Mirrors that output to this bundle. */ + }; + + static void bundle_remove(struct ofport *); + static void bundle_destroy(struct ofbundle *); + static void bundle_del_port(struct ofport_dpif *); + static void bundle_run(struct ofbundle *); + static void bundle_wait(struct ofbundle *); + + struct action_xlate_ctx { + /* action_xlate_ctx_init() initializes these members. */ + + /* The ofproto. */ + struct ofproto_dpif *ofproto; + + /* Flow to which the OpenFlow actions apply. xlate_actions() will modify + * this flow when actions change header fields. */ + struct flow flow; + + /* The packet corresponding to 'flow', or a null pointer if we are + * revalidating without a packet to refer to. */ + const struct ofpbuf *packet; + + /* 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_dpif *); + + /* xlate_actions() initializes and uses these members. The client might want + * to look at them after it returns. */ + + struct ofpbuf *odp_actions; /* Datapath actions. */ + tag_type tags; /* Tags associated with OFPP_NORMAL actions. */ + bool may_set_up_flow; /* True ordinarily; false if the actions must + * be reassessed for every packet. */ + uint16_t nf_output_iface; /* Output interface index for NetFlow. */ + + /* xlate_actions() initializes and uses these members, but the client has no + * reason to look at them. */ + + int recurse; /* Recursion level, via xlate_table_action. */ + int last_pop_priority; /* Offset in 'odp_actions' just past most + * recent ODP_ACTION_ATTR_SET_PRIORITY. */ + }; + + static void action_xlate_ctx_init(struct action_xlate_ctx *, + struct ofproto_dpif *, 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 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_dpif *rule; /* Owning rule. */ + struct flow flow; /* Exact-match flow. */ + bool installed; /* Installed in datapath? */ + bool may_install; /* True ordinarily; false if actions must + * be reassessed for every packet. */ + size_t actions_len; /* Number of bytes in actions[]. */ + struct nlattr *actions; /* Datapath actions. */ + tag_type tags; /* Tags. */ + struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */ + }; + + static struct facet *facet_create(struct rule_dpif *, const struct flow *, + const struct ofpbuf *packet); + static void facet_remove(struct ofproto_dpif *, struct facet *); + static void facet_free(struct facet *); + + static struct facet *facet_find(struct ofproto_dpif *, const struct flow *); + static struct facet *facet_lookup_valid(struct ofproto_dpif *, + const struct flow *); + static bool facet_revalidate(struct ofproto_dpif *, struct facet *); + + static void facet_execute(struct ofproto_dpif *, struct facet *, + struct ofpbuf *packet); + + static int facet_put__(struct ofproto_dpif *, struct facet *, + const struct nlattr *actions, size_t actions_len, + struct dpif_flow_stats *); + static void facet_install(struct ofproto_dpif *, struct facet *, + bool zero_stats); + static void facet_uninstall(struct ofproto_dpif *, struct facet *); + static void facet_flush_stats(struct ofproto_dpif *, struct facet *); + + static void facet_make_actions(struct ofproto_dpif *, struct facet *, + const struct ofpbuf *packet); + static void facet_update_time(struct ofproto_dpif *, struct facet *, + long long int used); + static void facet_update_stats(struct ofproto_dpif *, struct facet *, + const struct dpif_flow_stats *); + static void facet_push_stats(struct facet *); + static void facet_account(struct ofproto_dpif *, struct facet *, + uint64_t extra_bytes); + + static bool facet_is_controller_flow(struct facet *); + + static void flow_push_stats(const struct rule_dpif *, + struct flow *, uint64_t packets, uint64_t bytes, + long long int used); + + struct ofport_dpif { + struct ofport up; + + uint32_t odp_port; + struct ofbundle *bundle; /* Bundle that contains this port, if any. */ + struct list bundle_node; /* In struct ofbundle's "ports" list. */ + struct cfm *cfm; /* Connectivity Fault Management, if any. */ + tag_type tag; /* Tag associated with this port. */ + uint32_t bond_stable_id; /* stable_id to use as bond slave, or 0. */ + }; + + static struct ofport_dpif * + ofport_dpif_cast(const struct ofport *ofport) + { + assert(ofport->ofproto->ofproto_class == &ofproto_dpif_class); + return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL; + } + + static void port_run(struct ofport_dpif *); + static void port_wait(struct ofport_dpif *); + static int set_cfm(struct ofport *, const struct cfm *, + const uint16_t *remote_mps, size_t n_remote_mps); + + struct ofproto_dpif { + struct ofproto up; + struct dpif *dpif; + int max_ports; + + /* Statistics. */ + uint64_t n_matches; + + /* Bridging. */ + struct netflow *netflow; + struct ofproto_sflow *sflow; + struct hmap bundles; /* Contains "struct ofbundle"s. */ + struct mac_learning *ml; + struct ofmirror *mirrors[MAX_MIRRORS]; + bool has_bonded_bundles; + + /* Expiration. */ + struct timer next_expiration; + + /* Facets. */ + struct hmap facets; + bool need_revalidate; + struct tag_set revalidate_set; + }; + + static void ofproto_dpif_unixctl_init(void); + + static struct ofproto_dpif * + ofproto_dpif_cast(const struct ofproto *ofproto) + { + assert(ofproto->ofproto_class == &ofproto_dpif_class); + return CONTAINER_OF(ofproto, struct ofproto_dpif, up); + } + + static struct ofport_dpif *get_ofp_port(struct ofproto_dpif *, + uint16_t ofp_port); + static struct ofport_dpif *get_odp_port(struct ofproto_dpif *, + uint32_t odp_port); + + /* Packet processing. */ + static void update_learning_table(struct ofproto_dpif *, + const struct flow *, int vlan, + struct ofbundle *); + static bool is_admissible(struct ofproto_dpif *, const struct flow *, + bool have_packet, tag_type *, int *vlanp, + struct ofbundle **in_bundlep); + static void handle_upcall(struct ofproto_dpif *, struct dpif_upcall *); + + /* Flow expiration. */ + static int expire(struct ofproto_dpif *); + + /* Utilities. */ -static int send_packet(struct ofproto_dpif *, - uint32_t odp_port, uint16_t vlan_tci, ++static int send_packet(struct ofproto_dpif *, uint32_t odp_port, + const struct ofpbuf *packet); + + /* Global variables. */ + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); + + /* Factory functions. */ + + static void + enumerate_types(struct sset *types) + { + dp_enumerate_types(types); + } + + static int + enumerate_names(const char *type, struct sset *names) + { + return dp_enumerate_names(type, names); + } + + static int + del(const char *type, const char *name) + { + struct dpif *dpif; + int error; + + error = dpif_open(name, type, &dpif); + if (!error) { + error = dpif_delete(dpif); + dpif_close(dpif); + } + return error; + } + + /* Basic life-cycle. */ + + static struct ofproto * + alloc(void) + { + struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto); + return &ofproto->up; + } + + static void + dealloc(struct ofproto *ofproto_) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + free(ofproto); + } + + static int + construct(struct ofproto *ofproto_) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + const char *name = ofproto->up.name; + int error; + int i; + + error = dpif_create_and_open(name, ofproto->up.type, &ofproto->dpif); + if (error) { + VLOG_ERR("failed to open datapath %s: %s", name, strerror(error)); + return error; + } + + ofproto->max_ports = dpif_get_max_ports(ofproto->dpif); + ofproto->n_matches = 0; + + error = dpif_recv_set_mask(ofproto->dpif, + ((1u << DPIF_UC_MISS) | + (1u << DPIF_UC_ACTION) | + (1u << DPIF_UC_SAMPLE))); + if (error) { + VLOG_ERR("failed to listen on datapath %s: %s", name, strerror(error)); + dpif_close(ofproto->dpif); + return error; + } + dpif_flow_flush(ofproto->dpif); + dpif_recv_purge(ofproto->dpif); + + ofproto->netflow = NULL; + ofproto->sflow = NULL; + hmap_init(&ofproto->bundles); + ofproto->ml = mac_learning_create(); + for (i = 0; i < MAX_MIRRORS; i++) { + ofproto->mirrors[i] = NULL; + } + ofproto->has_bonded_bundles = false; + + timer_set_duration(&ofproto->next_expiration, 1000); + + hmap_init(&ofproto->facets); + ofproto->need_revalidate = false; + tag_set_init(&ofproto->revalidate_set); + + ofproto->up.tables = xmalloc(sizeof *ofproto->up.tables); + classifier_init(&ofproto->up.tables[0]); + ofproto->up.n_tables = 1; + + ofproto_dpif_unixctl_init(); + + return 0; + } + + static void + destruct(struct ofproto *ofproto_) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + int i; + + for (i = 0; i < MAX_MIRRORS; i++) { + mirror_destroy(ofproto->mirrors[i]); + } + + netflow_destroy(ofproto->netflow); + ofproto_sflow_destroy(ofproto->sflow); + hmap_destroy(&ofproto->bundles); + mac_learning_destroy(ofproto->ml); + + hmap_destroy(&ofproto->facets); + + dpif_close(ofproto->dpif); + } + + static int + run(struct ofproto *ofproto_) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + struct ofport_dpif *ofport; + struct ofbundle *bundle; + int i; + + dpif_run(ofproto->dpif); + + for (i = 0; i < 50; i++) { + struct dpif_upcall packet; + int error; + + error = dpif_recv(ofproto->dpif, &packet); + if (error) { + if (error == ENODEV) { + /* Datapath destroyed. */ + return error; + } + break; + } + + handle_upcall(ofproto, &packet); + } + + if (timer_expired(&ofproto->next_expiration)) { + int delay = expire(ofproto); + timer_set_duration(&ofproto->next_expiration, delay); + } + + if (ofproto->netflow) { + netflow_run(ofproto->netflow); + } + if (ofproto->sflow) { + ofproto_sflow_run(ofproto->sflow); + } + + HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) { + port_run(ofport); + } + HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { + bundle_run(bundle); + } + + /* Now revalidate if there's anything to do. */ + if (ofproto->need_revalidate + || !tag_set_is_empty(&ofproto->revalidate_set)) { + struct tag_set revalidate_set = ofproto->revalidate_set; + bool revalidate_all = ofproto->need_revalidate; + struct facet *facet, *next; + + /* Clear the revalidation flags. */ + tag_set_init(&ofproto->revalidate_set); + ofproto->need_revalidate = false; + + HMAP_FOR_EACH_SAFE (facet, next, hmap_node, &ofproto->facets) { + if (revalidate_all + || tag_set_intersects(&revalidate_set, facet->tags)) { + facet_revalidate(ofproto, facet); + } + } + } + + return 0; + } + + static void + wait(struct ofproto *ofproto_) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + struct ofport_dpif *ofport; + struct ofbundle *bundle; + + dpif_wait(ofproto->dpif); + dpif_recv_wait(ofproto->dpif); + if (ofproto->sflow) { + ofproto_sflow_wait(ofproto->sflow); + } + if (!tag_set_is_empty(&ofproto->revalidate_set)) { + poll_immediate_wake(); + } + HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) { + port_wait(ofport); + } + HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { + bundle_wait(bundle); + } + if (ofproto->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(&ofproto->next_expiration); + } + } + + static void + flush(struct ofproto *ofproto_) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + struct facet *facet, *next_facet; + + 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); + } + dpif_flow_flush(ofproto->dpif); + } + + static void + get_features(struct ofproto *ofproto_ OVS_UNUSED, + bool *arp_match_ip, uint32_t *actions) + { + *arp_match_ip = true; + *actions = ((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)); + } + + static void + get_tables(struct ofproto *ofproto_, struct ofp_table_stats *ots) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + struct odp_stats s; + + strcpy(ots->name, "classifier"); + + dpif_get_dp_stats(ofproto->dpif, &s); + put_32aligned_be64(&ots->lookup_count, htonll(s.n_hit + s.n_missed)); + put_32aligned_be64(&ots->matched_count, + htonll(s.n_hit + ofproto->n_matches)); + } + + static int + set_netflow(struct ofproto *ofproto_, + const struct netflow_options *netflow_options) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + + if (netflow_options) { + if (!ofproto->netflow) { + ofproto->netflow = netflow_create(); + } + return netflow_set_options(ofproto->netflow, netflow_options); + } else { + netflow_destroy(ofproto->netflow); + ofproto->netflow = NULL; + return 0; + } + } + + static struct ofport * + port_alloc(void) + { + struct ofport_dpif *port = xmalloc(sizeof *port); + return &port->up; + } + + static void + port_dealloc(struct ofport *port_) + { + struct ofport_dpif *port = ofport_dpif_cast(port_); + free(port); + } + + static int + port_construct(struct ofport *port_) + { + struct ofport_dpif *port = ofport_dpif_cast(port_); + struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto); + + port->odp_port = ofp_port_to_odp_port(port->up.ofp_port); + port->bundle = NULL; + port->cfm = NULL; + port->tag = tag_create_random(); + + if (ofproto->sflow) { + ofproto_sflow_add_port(ofproto->sflow, port->odp_port, + netdev_get_name(port->up.netdev)); + } + + return 0; + } + + static void + port_destruct(struct ofport *port_) + { + struct ofport_dpif *port = ofport_dpif_cast(port_); + struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto); + + bundle_remove(port_); + set_cfm(port_, NULL, NULL, 0); + if (ofproto->sflow) { + ofproto_sflow_del_port(ofproto->sflow, port->odp_port); + } + } + + static void + port_modified(struct ofport *port_) + { + struct ofport_dpif *port = ofport_dpif_cast(port_); + + if (port->bundle && port->bundle->bond) { + bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev); + } + } + + static void + port_reconfigured(struct ofport *port_, ovs_be32 old_config) + { + struct ofport_dpif *port = ofport_dpif_cast(port_); + struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto); + ovs_be32 changed = old_config ^ port->up.opp.config; + + if (changed & htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP | + OFPPC_NO_FWD | OFPPC_NO_FLOOD)) { + ofproto->need_revalidate = true; + } + } + + static int + set_sflow(struct ofproto *ofproto_, + const struct ofproto_sflow_options *sflow_options) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + struct ofproto_sflow *os = ofproto->sflow; + if (sflow_options) { + if (!os) { + struct ofport_dpif *ofport; + + os = ofproto->sflow = ofproto_sflow_create(ofproto->dpif); + HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) { + ofproto_sflow_add_port(os, ofport->odp_port, + netdev_get_name(ofport->up.netdev)); + } + } + ofproto_sflow_set_options(os, sflow_options); + } else { + ofproto_sflow_destroy(os); + ofproto->sflow = NULL; + } + return 0; + } + + static int + set_cfm(struct ofport *ofport_, const struct cfm *cfm, + const uint16_t *remote_mps, size_t n_remote_mps) + { + struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); + int error; + + if (!cfm) { + error = 0; + } else { + if (!ofport->cfm) { + ofport->cfm = cfm_create(); + } + + ofport->cfm->mpid = cfm->mpid; + ofport->cfm->interval = cfm->interval; + memcpy(ofport->cfm->maid, cfm->maid, CCM_MAID_LEN); + + cfm_update_remote_mps(ofport->cfm, remote_mps, n_remote_mps); + + if (cfm_configure(ofport->cfm)) { + return 0; + } + + error = EINVAL; + } + cfm_destroy(ofport->cfm); + ofport->cfm = NULL; + return error; + } + + static int + get_cfm(struct ofport *ofport_, const struct cfm **cfmp) + { + struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); + *cfmp = ofport->cfm; + return 0; + } + + /* Bundles. */ + + /* Expires all MAC learning entries associated with 'port' and forces ofproto + * to revalidate every flow. */ + static void + bundle_flush_macs(struct ofbundle *bundle) + { + struct ofproto_dpif *ofproto = bundle->ofproto; + struct mac_learning *ml = ofproto->ml; + struct mac_entry *mac, *next_mac; + + ofproto->need_revalidate = true; + LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) { + if (mac->port.p == bundle) { + mac_learning_expire(ml, mac); + } + } + } + + static struct ofbundle * + bundle_lookup(const struct ofproto_dpif *ofproto, void *aux) + { + struct ofbundle *bundle; + + HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0), + &ofproto->bundles) { + if (bundle->aux == aux) { + return bundle; + } + } + return NULL; + } + + /* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the + * ones that are found to 'bundles'. */ + static void + bundle_lookup_multiple(struct ofproto_dpif *ofproto, + void **auxes, size_t n_auxes, + struct hmapx *bundles) + { + size_t i; + + hmapx_init(bundles); + for (i = 0; i < n_auxes; i++) { + struct ofbundle *bundle = bundle_lookup(ofproto, auxes[i]); + if (bundle) { + hmapx_add(bundles, bundle); + } + } + } + + static void + bundle_del_port(struct ofport_dpif *port) + { + struct ofbundle *bundle = port->bundle; + + bundle->ofproto->need_revalidate = true; + + list_remove(&port->bundle_node); + port->bundle = NULL; + + if (bundle->lacp) { + lacp_slave_unregister(bundle->lacp, port); + } + if (bundle->bond) { + bond_slave_unregister(bundle->bond, port); + } + + bundle->floodable = true; + LIST_FOR_EACH (port, bundle_node, &bundle->ports) { + if (port->up.opp.config & htonl(OFPPC_NO_FLOOD)) { + bundle->floodable = false; + } + } + } + + static bool + bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port, + struct lacp_slave_settings *lacp, + uint32_t bond_stable_id) + { + struct ofport_dpif *port; + + port = get_ofp_port(bundle->ofproto, ofp_port); + if (!port) { + return false; + } + + if (port->bundle != bundle) { + bundle->ofproto->need_revalidate = true; + if (port->bundle) { + bundle_del_port(port); + } + + port->bundle = bundle; + list_push_back(&bundle->ports, &port->bundle_node); + if (port->up.opp.config & htonl(OFPPC_NO_FLOOD)) { + bundle->floodable = false; + } + } + if (lacp) { + lacp_slave_register(bundle->lacp, port, lacp); + } + + port->bond_stable_id = bond_stable_id; + + return true; + } + + static void + bundle_destroy(struct ofbundle *bundle) + { + struct ofproto_dpif *ofproto; + struct ofport_dpif *port, *next_port; + int i; + + if (!bundle) { + return; + } + + ofproto = bundle->ofproto; + for (i = 0; i < MAX_MIRRORS; i++) { + struct ofmirror *m = ofproto->mirrors[i]; + if (m) { + if (m->out == bundle) { + mirror_destroy(m); + } else if (hmapx_find_and_delete(&m->srcs, bundle) + || hmapx_find_and_delete(&m->dsts, bundle)) { + ofproto->need_revalidate = true; + } + } + } + + LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) { + bundle_del_port(port); + } + + bundle_flush_macs(bundle); + hmap_remove(&ofproto->bundles, &bundle->hmap_node); + free(bundle->name); + free(bundle->trunks); + lacp_destroy(bundle->lacp); + bond_destroy(bundle->bond); + free(bundle); + } + + static int + bundle_set(struct ofproto *ofproto_, void *aux, + const struct ofproto_bundle_settings *s) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + bool need_flush = false; + const unsigned long *trunks; + struct ofport_dpif *port; + struct ofbundle *bundle; + size_t i; + bool ok; + + if (!s) { + bundle_destroy(bundle_lookup(ofproto, aux)); + return 0; + } + + assert(s->n_slaves == 1 || s->bond != NULL); + assert((s->lacp != NULL) == (s->lacp_slaves != NULL)); + + bundle = bundle_lookup(ofproto, aux); + if (!bundle) { + bundle = xmalloc(sizeof *bundle); + + bundle->ofproto = ofproto; + hmap_insert(&ofproto->bundles, &bundle->hmap_node, + hash_pointer(aux, 0)); + bundle->aux = aux; + bundle->name = NULL; + + list_init(&bundle->ports); + bundle->vlan = -1; + bundle->trunks = NULL; + bundle->lacp = NULL; + bundle->bond = NULL; + + bundle->floodable = true; + + bundle->src_mirrors = 0; + bundle->dst_mirrors = 0; + bundle->mirror_out = 0; + } + + if (!bundle->name || strcmp(s->name, bundle->name)) { + free(bundle->name); + bundle->name = xstrdup(s->name); + } + + /* LACP. */ + if (s->lacp) { + if (!bundle->lacp) { + bundle->lacp = lacp_create(); + } + lacp_configure(bundle->lacp, s->lacp); + } else { + lacp_destroy(bundle->lacp); + bundle->lacp = NULL; + } + + /* Update set of ports. */ + ok = true; + for (i = 0; i < s->n_slaves; i++) { + if (!bundle_add_port(bundle, s->slaves[i], + s->lacp ? &s->lacp_slaves[i] : NULL, + s->bond_stable_ids ? s->bond_stable_ids[i] : 0)) { + ok = false; + } + } + if (!ok || list_size(&bundle->ports) != s->n_slaves) { + struct ofport_dpif *next_port; + + LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) { + for (i = 0; i < s->n_slaves; i++) { + if (s->slaves[i] == port->up.ofp_port) { + goto found; + } + } + + bundle_del_port(port); + found: ; + } + } + assert(list_size(&bundle->ports) <= s->n_slaves); + + if (list_is_empty(&bundle->ports)) { + bundle_destroy(bundle); + return EINVAL; + } + + /* Set VLAN tag. */ + if (s->vlan != bundle->vlan) { + bundle->vlan = s->vlan; + need_flush = true; + } + + /* Get trunked VLANs. */ + trunks = s->vlan == -1 ? NULL : s->trunks; + if (!vlan_bitmap_equal(trunks, bundle->trunks)) { + free(bundle->trunks); + bundle->trunks = vlan_bitmap_clone(trunks); + need_flush = true; + } + + /* Bonding. */ + if (!list_is_short(&bundle->ports)) { + bundle->ofproto->has_bonded_bundles = true; + if (bundle->bond) { + if (bond_reconfigure(bundle->bond, s->bond)) { + ofproto->need_revalidate = true; + } + } else { + bundle->bond = bond_create(s->bond); + ofproto->need_revalidate = true; + } + + LIST_FOR_EACH (port, bundle_node, &bundle->ports) { + bond_slave_register(bundle->bond, port, port->bond_stable_id, + port->up.netdev); + } + } else { + bond_destroy(bundle->bond); + bundle->bond = NULL; + } + + /* If we changed something that would affect MAC learning, un-learn + * everything on this port and force flow revalidation. */ + if (need_flush) { + bundle_flush_macs(bundle); + } + + return 0; + } + + static void + bundle_remove(struct ofport *port_) + { + struct ofport_dpif *port = ofport_dpif_cast(port_); + struct ofbundle *bundle = port->bundle; + + if (bundle) { + bundle_del_port(port); + if (list_is_empty(&bundle->ports)) { + bundle_destroy(bundle); + } else if (list_is_short(&bundle->ports)) { + bond_destroy(bundle->bond); + bundle->bond = NULL; + } + } + } + + static void + send_pdu_cb(void *port_, const struct lacp_pdu *pdu) + { + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10); + struct ofport_dpif *port = port_; + uint8_t ea[ETH_ADDR_LEN]; + int error; + + error = netdev_get_etheraddr(port->up.netdev, ea); + if (!error) { + struct lacp_pdu *packet_pdu; + struct ofpbuf packet; + + ofpbuf_init(&packet, 0); + packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP, + sizeof *packet_pdu); + *packet_pdu = *pdu; + error = netdev_send(port->up.netdev, &packet); + if (error) { + VLOG_WARN_RL(&rl, "port %s: sending LACP PDU on iface %s failed " + "(%s)", port->bundle->name, + netdev_get_name(port->up.netdev), strerror(error)); + } + ofpbuf_uninit(&packet); + } else { + VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface " + "%s (%s)", port->bundle->name, + netdev_get_name(port->up.netdev), strerror(error)); + } + } + + static void + bundle_send_learning_packets(struct ofbundle *bundle) + { + struct ofproto_dpif *ofproto = bundle->ofproto; + int error, n_packets, n_errors; + struct mac_entry *e; + + error = n_packets = n_errors = 0; + LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) { + if (e->port.p != bundle) { + int ret = bond_send_learning_packet(bundle->bond, e->mac, e->vlan); + if (ret) { + error = ret; + n_errors++; + } + n_packets++; + } + } + + if (n_errors) { + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); + VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning " + "packets, last error was: %s", + bundle->name, n_errors, n_packets, strerror(error)); + } else { + VLOG_DBG("bond %s: sent %d gratuitous learning packets", + bundle->name, n_packets); + } + } + + static void + bundle_run(struct ofbundle *bundle) + { + if (bundle->lacp) { + lacp_run(bundle->lacp, send_pdu_cb); + } + if (bundle->bond) { + struct ofport_dpif *port; + + LIST_FOR_EACH (port, bundle_node, &bundle->ports) { + bool may_enable = lacp_slave_may_enable(bundle->lacp, port); + bond_slave_set_lacp_may_enable(bundle->bond, port, may_enable); + } + + bond_run(bundle->bond, &bundle->ofproto->revalidate_set, + lacp_negotiated(bundle->lacp)); + if (bond_should_send_learning_packets(bundle->bond)) { + bundle_send_learning_packets(bundle); + } + } + } + + static void + bundle_wait(struct ofbundle *bundle) + { + if (bundle->lacp) { + lacp_wait(bundle->lacp); + } + if (bundle->bond) { + bond_wait(bundle->bond); + } + } + + /* Mirrors. */ + + static int + mirror_scan(struct ofproto_dpif *ofproto) + { + int idx; + + for (idx = 0; idx < MAX_MIRRORS; idx++) { + if (!ofproto->mirrors[idx]) { + return idx; + } + } + return -1; + } + + static struct ofmirror * + mirror_lookup(struct ofproto_dpif *ofproto, void *aux) + { + int i; + + for (i = 0; i < MAX_MIRRORS; i++) { + struct ofmirror *mirror = ofproto->mirrors[i]; + if (mirror && mirror->aux == aux) { + return mirror; + } + } + + return NULL; + } + + static int + mirror_set(struct ofproto *ofproto_, void *aux, + const struct ofproto_mirror_settings *s) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + mirror_mask_t mirror_bit; + struct ofbundle *bundle; + struct ofmirror *mirror; + struct ofbundle *out; + struct hmapx srcs; /* Contains "struct ofbundle *"s. */ + struct hmapx dsts; /* Contains "struct ofbundle *"s. */ + int out_vlan; + + mirror = mirror_lookup(ofproto, aux); + if (!s) { + mirror_destroy(mirror); + return 0; + } + if (!mirror) { + int idx; + + idx = mirror_scan(ofproto); + if (idx < 0) { + VLOG_WARN("bridge %s: maximum of %d port mirrors reached, " + "cannot create %s", + ofproto->up.name, MAX_MIRRORS, s->name); + return EFBIG; + } + + mirror = ofproto->mirrors[idx] = xzalloc(sizeof *mirror); + mirror->ofproto = ofproto; + mirror->idx = idx; + mirror->out_vlan = -1; + mirror->name = NULL; + } + + if (!mirror->name || strcmp(s->name, mirror->name)) { + free(mirror->name); + mirror->name = xstrdup(s->name); + } + + /* Get the new configuration. */ + if (s->out_bundle) { + out = bundle_lookup(ofproto, s->out_bundle); + if (!out) { + mirror_destroy(mirror); + return EINVAL; + } + out_vlan = -1; + } else { + out = NULL; + out_vlan = s->out_vlan; + } + bundle_lookup_multiple(ofproto, s->srcs, s->n_srcs, &srcs); + bundle_lookup_multiple(ofproto, s->dsts, s->n_dsts, &dsts); + + /* If the configuration has not changed, do nothing. */ + if (hmapx_equals(&srcs, &mirror->srcs) + && hmapx_equals(&dsts, &mirror->dsts) + && vlan_bitmap_equal(mirror->vlans, s->src_vlans) + && mirror->out == out + && mirror->out_vlan == out_vlan) + { + hmapx_destroy(&srcs); + hmapx_destroy(&dsts); + return 0; + } + + hmapx_swap(&srcs, &mirror->srcs); + hmapx_destroy(&srcs); + + hmapx_swap(&dsts, &mirror->dsts); + hmapx_destroy(&dsts); + + free(mirror->vlans); + mirror->vlans = vlan_bitmap_clone(s->src_vlans); + + mirror->out = out; + mirror->out_vlan = out_vlan; + + /* Update bundles. */ + mirror_bit = MIRROR_MASK_C(1) << mirror->idx; + HMAP_FOR_EACH (bundle, hmap_node, &mirror->ofproto->bundles) { + if (hmapx_contains(&mirror->srcs, bundle)) { + bundle->src_mirrors |= mirror_bit; + } else { + bundle->src_mirrors &= ~mirror_bit; + } + + if (hmapx_contains(&mirror->dsts, bundle)) { + bundle->dst_mirrors |= mirror_bit; + } else { + bundle->dst_mirrors &= ~mirror_bit; + } + + if (mirror->out == bundle) { + bundle->mirror_out |= mirror_bit; + } else { + bundle->mirror_out &= ~mirror_bit; + } + } + + ofproto->need_revalidate = true; + mac_learning_flush(ofproto->ml); + + return 0; + } + + static void + mirror_destroy(struct ofmirror *mirror) + { + struct ofproto_dpif *ofproto; + mirror_mask_t mirror_bit; + struct ofbundle *bundle; + + if (!mirror) { + return; + } + + ofproto = mirror->ofproto; + ofproto->need_revalidate = true; + mac_learning_flush(ofproto->ml); + + mirror_bit = MIRROR_MASK_C(1) << mirror->idx; + HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { + bundle->src_mirrors &= ~mirror_bit; + bundle->dst_mirrors &= ~mirror_bit; + bundle->mirror_out &= ~mirror_bit; + } + + hmapx_destroy(&mirror->srcs); + hmapx_destroy(&mirror->dsts); + free(mirror->vlans); + + ofproto->mirrors[mirror->idx] = NULL; + free(mirror->name); + free(mirror); + } + + static int + set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) { + ofproto->need_revalidate = true; + mac_learning_flush(ofproto->ml); + } + return 0; + } + + static bool + is_mirror_output_bundle(struct ofproto *ofproto_, void *aux) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + struct ofbundle *bundle = bundle_lookup(ofproto, aux); + return bundle && bundle->mirror_out != 0; + } + + /* Ports. */ + + static struct ofport_dpif * + get_ofp_port(struct ofproto_dpif *ofproto, uint16_t ofp_port) + { + struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port); + return ofport ? ofport_dpif_cast(ofport) : NULL; + } + + static struct ofport_dpif * + get_odp_port(struct ofproto_dpif *ofproto, uint32_t odp_port) + { + return get_ofp_port(ofproto, odp_port_to_ofp_port(odp_port)); + } + + static void + ofproto_port_from_dpif_port(struct ofproto_port *ofproto_port, + struct dpif_port *dpif_port) + { + ofproto_port->name = dpif_port->name; + ofproto_port->type = dpif_port->type; + ofproto_port->ofp_port = odp_port_to_ofp_port(dpif_port->port_no); + } + + static void + port_run(struct ofport_dpif *ofport) + { + 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->up.opp.hw_addr, + ETH_TYPE_CFM, sizeof *ccm); + cfm_compose_ccm(ofport->cfm, ccm); + send_packet(ofproto_dpif_cast(ofport->up.ofproto), - ofport->odp_port, 0, &packet); ++ ofport->odp_port, &packet); + ofpbuf_uninit(&packet); + } + } + } + + static void + port_wait(struct ofport_dpif *ofport) + { + if (ofport->cfm) { + cfm_wait(ofport->cfm); + } + } + + static int + port_query_by_name(const struct ofproto *ofproto_, const char *devname, + struct ofproto_port *ofproto_port) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + struct dpif_port dpif_port; + int error; + + error = dpif_port_query_by_name(ofproto->dpif, devname, &dpif_port); + if (!error) { + ofproto_port_from_dpif_port(ofproto_port, &dpif_port); + } + return error; + } + + static int + port_add(struct ofproto *ofproto_, struct netdev *netdev, uint16_t *ofp_portp) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + uint16_t odp_port; + int error; + + error = dpif_port_add(ofproto->dpif, netdev, &odp_port); + if (!error) { + *ofp_portp = odp_port_to_ofp_port(odp_port); + } + return error; + } + + static int + port_del(struct ofproto *ofproto_, uint16_t ofp_port) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + int error; + + error = dpif_port_del(ofproto->dpif, ofp_port_to_odp_port(ofp_port)); + if (!error) { + struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port); + if (ofport) { + /* The caller is going to close ofport->up.netdev. If this is a + * bonded port, then the bond is using that netdev, so remove it + * from the bond. The client will need to reconfigure everything + * after deleting ports, so then the slave will get re-added. */ + bundle_remove(&ofport->up); + } + } + return error; + } + + struct port_dump_state { + struct dpif_port_dump dump; + bool done; + }; + + static int + port_dump_start(const struct ofproto *ofproto_, void **statep) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + struct port_dump_state *state; + + *statep = state = xmalloc(sizeof *state); + dpif_port_dump_start(&state->dump, ofproto->dpif); + state->done = false; + return 0; + } + + static int + port_dump_next(const struct ofproto *ofproto_ OVS_UNUSED, void *state_, + struct ofproto_port *port) + { + struct port_dump_state *state = state_; + struct dpif_port dpif_port; + + if (dpif_port_dump_next(&state->dump, &dpif_port)) { + ofproto_port_from_dpif_port(port, &dpif_port); + return 0; + } else { + int error = dpif_port_dump_done(&state->dump); + state->done = true; + return error ? error : EOF; + } + } + + static int + port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_) + { + struct port_dump_state *state = state_; + + if (!state->done) { + dpif_port_dump_done(&state->dump); + } + free(state); + return 0; + } + + static int + port_poll(const struct ofproto *ofproto_, char **devnamep) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + return dpif_port_poll(ofproto->dpif, devnamep); + } + + static void + port_poll_wait(const struct ofproto *ofproto_) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + dpif_port_poll_wait(ofproto->dpif); + } + + static int + port_is_lacp_current(const struct ofport *ofport_) + { + const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_); + return (ofport->bundle && ofport->bundle->lacp + ? lacp_slave_is_current(ofport->bundle->lacp, ofport) + : -1); + } + + /* Upcall handling. */ + + /* 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_dpif *ofproto, struct dpif_upcall *upcall, + const struct flow *flow, bool clone) + { + struct ofputil_packet_in pin; + + pin.packet = upcall->packet; + pin.in_port = flow->in_port; + pin.reason = upcall->type == DPIF_UC_MISS ? OFPR_NO_MATCH : OFPR_ACTION; + pin.buffer_id = 0; /* not yet known */ + pin.send_len = upcall->userdata; + connmgr_send_packet_in(ofproto->up.connmgr, &pin, flow, + clone ? NULL : upcall->packet); + } + + static bool + process_special(struct ofproto_dpif *ofproto, const struct flow *flow, + const struct ofpbuf *packet) + { + if (cfm_should_process_flow(flow)) { + struct ofport_dpif *ofport = get_ofp_port(ofproto, flow->in_port); + if (ofport && ofport->cfm) { + cfm_process_heartbeat(ofport->cfm, packet); + } + return true; + } else if (flow->dl_type == htons(ETH_TYPE_LACP)) { + struct ofport_dpif *port = get_ofp_port(ofproto, flow->in_port); + if (port && port->bundle && port->bundle->lacp) { + const struct lacp_pdu *pdu = parse_lacp_packet(packet); + if (pdu) { + lacp_process_pdu(port->bundle->lacp, port, pdu); + } + return true; + } + } + return false; + } + + static void + handle_miss_upcall(struct ofproto_dpif *ofproto, struct dpif_upcall *upcall) + { + struct facet *facet; + struct flow flow; + + /* Obtain in_port and tun_id, at least. */ + odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow); + + /* Set header pointers in 'flow'. */ + flow_extract(upcall->packet, flow.tun_id, flow.in_port, &flow); + + /* Handle 802.1ag and LACP. */ + if (process_special(ofproto, &flow, upcall->packet)) { + ofpbuf_delete(upcall->packet); + ofproto->n_matches++; + 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(ofproto->up.connmgr, &flow, upcall->packet)) { - send_packet(ofproto, OFPP_LOCAL, 0, upcall->packet); ++ send_packet(ofproto, OFPP_LOCAL, upcall->packet); + } + + facet = facet_lookup_valid(ofproto, &flow); + if (!facet) { + struct rule_dpif *rule = rule_dpif_lookup(ofproto, &flow); + if (!rule) { + /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */ + struct ofport_dpif *port = get_ofp_port(ofproto, flow.in_port); + if (port) { + if (port->up.opp.config & htonl(OFPPC_NO_PACKET_IN)) { + COVERAGE_INC(ofproto_dpif_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); + } + + send_packet_in(ofproto, upcall, &flow, false); + return; + } + + facet = facet_create(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(ofproto, facet, upcall->packet); + } + + if (facet->rule->up.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(ofproto, upcall, &flow, true); + } + + facet_execute(ofproto, facet, upcall->packet); + facet_install(ofproto, facet, false); + ofproto->n_matches++; + } + + static void + handle_upcall(struct ofproto_dpif *ofproto, struct dpif_upcall *upcall) + { + struct flow flow; + + switch (upcall->type) { + case DPIF_UC_ACTION: + COVERAGE_INC(ofproto_dpif_ctlr_action); + odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow); + send_packet_in(ofproto, upcall, &flow, false); + break; + + case DPIF_UC_SAMPLE: + if (ofproto->sflow) { + odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow); + ofproto_sflow_received(ofproto->sflow, upcall, &flow); + } + ofpbuf_delete(upcall->packet); + break; + + case DPIF_UC_MISS: + handle_miss_upcall(ofproto, upcall); + break; + + case DPIF_N_UC_TYPES: + default: + VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32, upcall->type); + break; + } + } + + /* Flow expiration. */ + + static int facet_max_idle(const struct ofproto_dpif *); + static void update_stats(struct ofproto_dpif *); + static void rule_expire(struct rule_dpif *); + static void expire_facets(struct ofproto_dpif *, int dp_max_idle); + + /* This function is called periodically by 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 + expire(struct ofproto_dpif *ofproto) + { + struct rule_dpif *rule, *next_rule; + struct cls_cursor cursor; + int dp_max_idle; + + /* Update stats for each flow in the datapath. */ + update_stats(ofproto); + + /* Expire facets that have been idle too long. */ + dp_max_idle = facet_max_idle(ofproto); + expire_facets(ofproto, dp_max_idle); + + /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */ + cls_cursor_init(&cursor, &ofproto->up.tables[0], NULL); + CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) { + rule_expire(rule); + } + + /* All outstanding data in existing flows has been accounted, so it's a + * good time to do bond rebalancing. */ + if (ofproto->has_bonded_bundles) { + struct ofbundle *bundle; + + HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { + if (bundle->bond) { + bond_rebalance(bundle->bond, &ofproto->revalidate_set); + } + } + } + + 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 + * 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 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 + update_stats(struct ofproto_dpif *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) { + uint64_t extra = stats->n_packets - facet->dp_packet_count; + facet->packet_count += extra; + } 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(facet); + } else { + /* There's a flow in the datapath that we know nothing about. + * Delete it. */ + COVERAGE_INC(facet_unexpected); + 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 + facet_max_idle(const struct ofproto_dpif *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 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)", ofproto->up.name, ds_cstr(&s)); + ds_destroy(&s); + } + + return bucket * BUCKET_WIDTH; + } + + static void + facet_active_timeout(struct ofproto_dpif *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 + expire_facets(struct ofproto_dpif *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 rule_dpif *rule) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); + struct facet *facet, *next_facet; + long long int now; + uint8_t reason; + + /* Has 'rule' expired? */ + now = time_msec(); + if (rule->up.hard_timeout + && now > rule->up.created + rule->up.hard_timeout * 1000) { + reason = OFPRR_HARD_TIMEOUT; + } else if (rule->up.idle_timeout && list_is_empty(&rule->facets) + && now > rule->used + rule->up.idle_timeout * 1000) { + reason = OFPRR_IDLE_TIMEOUT; + } else { + return; + } + + COVERAGE_INC(ofproto_dpif_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. */ + ofproto_rule_expire(&rule->up, reason); + } + + /* Facets. */ + + /* Creates and returns a new facet 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 + * the ofproto's classifier table. */ + static struct facet * + facet_create(struct rule_dpif *rule, const struct flow *flow, + const struct ofpbuf *packet) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); + 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); + } + + /* 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_dpif *ofproto, const struct flow *flow, + const struct nlattr *odp_actions, size_t actions_len, + struct ofpbuf *packet) + { + if (actions_len == NLA_ALIGN(NLA_HDRLEN + sizeof(uint64_t)) + && odp_actions->nla_type == ODP_ACTION_ATTR_CONTROLLER) { + /* As an optimization, avoid a round-trip from userspace to kernel to + * userspace. This also avoids possibly filling up kernel packet + * buffers along the way. */ + struct dpif_upcall upcall; + + upcall.type = DPIF_UC_ACTION; + upcall.packet = packet; + upcall.key = NULL; + upcall.key_len = 0; + upcall.userdata = nl_attr_get_u64(odp_actions); + upcall.sample_pool = 0; + upcall.actions = NULL; + upcall.actions_len = 0; + + send_packet_in(ofproto, &upcall, flow, false); + + return true; + } else { + int error; + + error = dpif_execute(ofproto->dpif, odp_actions, actions_len, packet); + ofpbuf_delete(packet); + return !error; + } + } + + /* Executes the actions indicated by 'facet' on 'packet' and credits 'facet''s + * statistics appropriately. 'packet' must have at least sizeof(struct + * ofp_packet_in) bytes of headroom. + * + * For correct results, 'packet' must actually be in 'facet''s flow; that is, + * applying flow_extract() to 'packet' would yield the same flow as + * 'facet->flow'. + * + * 'facet' must have accurately composed ODP actions; that is, it must not be + * in need of revalidation. + * + * Takes ownership of 'packet'. */ + static void + facet_execute(struct ofproto_dpif *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); + } + } + + /* 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_dpif *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_dpif *p, struct facet *facet, + const struct ofpbuf *packet) + { + const struct rule_dpif *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->up.actions, rule->up.n_actions); + facet->tags = ctx.tags; + facet->may_install = ctx.may_set_up_flow; + facet->nf_flow.output_iface = ctx.nf_output_iface; + + if (facet->actions_len != odp_actions->size + || memcmp(facet->actions, odp_actions->data, odp_actions->size)) { + free(facet->actions); + facet->actions_len = odp_actions->size; + facet->actions = xmemdup(odp_actions->data, odp_actions->size); + } + + ofpbuf_delete(odp_actions); + } + + static int + facet_put__(struct ofproto_dpif *ofproto, struct facet *facet, + const struct nlattr *actions, size_t actions_len, + struct dpif_flow_stats *stats) + { + struct odputil_keybuf keybuf; + enum dpif_flow_put_flags flags; + struct ofpbuf key; + + flags = DPIF_FP_CREATE | DPIF_FP_MODIFY; + if (stats) { + flags |= DPIF_FP_ZERO_STATS; + facet->dp_packet_count = 0; + facet->dp_byte_count = 0; + } + + ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); + odp_flow_key_from_flow(&key, &facet->flow); + + return dpif_flow_put(ofproto->dpif, flags, key.data, key.size, + actions, actions_len, stats); + } + + /* If 'facet' is installable, inserts or re-inserts it into 'p''s datapath. If + * 'zero_stats' is true, clears any existing statistics from the datapath for + * 'facet'. */ + static void + facet_install(struct ofproto_dpif *p, struct facet *facet, bool zero_stats) + { + struct dpif_flow_stats stats; + + if (facet->may_install + && !facet_put__(p, facet, facet->actions, facet->actions_len, + zero_stats ? &stats : NULL)) { + facet->installed = true; + } + } + + static void + facet_account(struct ofproto_dpif *ofproto, + struct facet *facet, uint64_t extra_bytes) + { + uint64_t total_bytes, n_bytes; + struct ofbundle *in_bundle; + const struct nlattr *a; + tag_type dummy = 0; + unsigned int left; + int vlan; + + total_bytes = facet->byte_count + extra_bytes; + if (total_bytes <= facet->accounted_bytes) { + return; + } + n_bytes = total_bytes - facet->accounted_bytes; + facet->accounted_bytes = total_bytes; + + /* Test that 'tags' is nonzero to ensure that only flows that include an + * OFPP_NORMAL action are used for learning and bond slave rebalancing. + * This works because OFPP_NORMAL always sets a nonzero tag value. + * + * Feed information from the active flows back into the learning table to + * ensure that table is always in sync with what is actually flowing + * through the datapath. */ + if (!facet->tags + || !is_admissible(ofproto, &facet->flow, false, &dummy, + &vlan, &in_bundle)) { + return; + } + + update_learning_table(ofproto, &facet->flow, vlan, in_bundle); + + if (!ofproto->has_bonded_bundles) { + return; + } + NL_ATTR_FOR_EACH_UNSAFE (a, left, facet->actions, facet->actions_len) { + if (nl_attr_type(a) == ODP_ACTION_ATTR_OUTPUT) { + struct ofport_dpif *port; + + port = get_odp_port(ofproto, nl_attr_get_u32(a)); + if (port && port->bundle && port->bundle->bond) { + bond_account(port->bundle->bond, &facet->flow, vlan, n_bytes); + } + } + } + } + + /* If 'rule' is installed in the datapath, uninstalls it. */ + static void + facet_uninstall(struct ofproto_dpif *p, struct facet *facet) + { + if (facet->installed) { + struct odputil_keybuf keybuf; + struct dpif_flow_stats stats; + struct ofpbuf key; + + ofpbuf_use_stack(&key, &keybuf, sizeof keybuf); + odp_flow_key_from_flow(&key, &facet->flow); + + if (!dpif_flow_del(p->dpif, key.data, key.size, &stats)) { + facet_update_stats(p, facet, &stats); + } + facet->installed = false; + facet->dp_packet_count = 0; + facet->dp_byte_count = 0; + } else { + assert(facet->dp_packet_count == 0); + assert(facet->dp_byte_count == 0); + } + } + + /* Returns true if the only action for 'facet' is to send to the controller. + * (We don't report NetFlow expiration messages for such facets because they + * are just part of the control logic for the network, not real traffic). */ + static bool + facet_is_controller_flow(struct facet *facet) + { + return (facet + && facet->rule->up.n_actions == 1 + && action_outputs_to_port(&facet->rule->up.actions[0], + htons(OFPP_CONTROLLER))); + } + + /* Folds all of 'facet''s statistics into its rule. Also updates the + * accounting ofhook and emits a NetFlow expiration if appropriate. All of + * 'facet''s statistics in the datapath should have been zeroed and folded into + * its packet and byte counts before this function is called. */ + static void + facet_flush_stats(struct ofproto_dpif *ofproto, struct facet *facet) + { + assert(!facet->dp_byte_count); + assert(!facet->dp_packet_count); + + facet_push_stats(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_dpif *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_dpif *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(facet_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_dpif *ofproto, struct facet *facet) + { + struct action_xlate_ctx ctx; + struct ofpbuf *odp_actions; + struct rule_dpif *new_rule; + bool actions_changed; + + COVERAGE_INC(facet_revalidate); + + /* Determine the new rule. */ + new_rule = rule_dpif_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->up.actions, new_rule->up.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->up.created; + facet->rs_used = facet->used; + } + + ofpbuf_delete(odp_actions); + + return true; + } + + /* 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_dpif *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_dpif *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(facet); + netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags); + } + } + + static void + facet_push_stats(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(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_dpif *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(const struct rule_dpif *rule, + struct flow *flow, uint64_t packets, uint64_t bytes, + long long int used) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); + 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->up.actions, rule->up.n_actions)); + } + + /* Rules. */ + + static struct rule_dpif * + rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow) + { + return rule_dpif_cast(rule_from_cls_rule( + classifier_lookup(&ofproto->up.tables[0], + flow))); + } + + static struct rule * + rule_alloc(void) + { + struct rule_dpif *rule = xmalloc(sizeof *rule); + return &rule->up; + } + + static void + rule_dealloc(struct rule *rule_) + { + struct rule_dpif *rule = rule_dpif_cast(rule_); + free(rule); + } + + static int + rule_construct(struct rule *rule_) + { + struct rule_dpif *rule = rule_dpif_cast(rule_); + struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); + struct rule_dpif *old_rule; + int error; + + error = validate_actions(rule->up.actions, rule->up.n_actions, + &rule->up.cr.flow, ofproto->max_ports); + if (error) { + return error; + } + + old_rule = rule_dpif_cast(rule_from_cls_rule(classifier_find_rule_exactly( + &ofproto->up.tables[0], + &rule->up.cr))); + if (old_rule) { + ofproto_rule_destroy(&old_rule->up); + } + + rule->used = rule->up.created; + rule->packet_count = 0; + rule->byte_count = 0; + list_init(&rule->facets); + classifier_insert(&ofproto->up.tables[0], &rule->up.cr); + + ofproto->need_revalidate = true; + + return 0; + } + + static void + rule_destruct(struct rule *rule_) + { + struct rule_dpif *rule = rule_dpif_cast(rule_); + struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); + struct facet *facet, *next_facet; + + classifier_remove(&ofproto->up.tables[0], &rule->up.cr); + LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) { + facet_revalidate(ofproto, facet); + } + ofproto->need_revalidate = true; + } + + static void + rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes) + { + struct rule_dpif *rule = rule_dpif_cast(rule_); + 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. */ + *packets = rule->packet_count; + *bytes = 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) { + *packets += facet->packet_count; + *bytes += facet->byte_count; + } + } + + static int + rule_execute(struct rule *rule_, struct flow *flow, struct ofpbuf *packet) + { + struct rule_dpif *rule = rule_dpif_cast(rule_); + struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); + struct action_xlate_ctx ctx; + struct ofpbuf *odp_actions; + struct facet *facet; + size_t size; + + /* 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 0; + } + + /* Otherwise, if 'rule' is in fact the correct rule for 'packet', then + * create a new facet for it and use that. */ + if (rule_dpif_lookup(ofproto, flow) == rule) { + facet = facet_create(rule, flow, packet); + facet_execute(ofproto, facet, packet); + facet_install(ofproto, facet, true); + return 0; + } + + /* 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->up.actions, rule->up.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(rule, flow, 1, size, rule->used); + } + ofpbuf_delete(odp_actions); + + return 0; + } + + static int + rule_modify_actions(struct rule *rule_, + const union ofp_action *actions, size_t n_actions) + { + struct rule_dpif *rule = rule_dpif_cast(rule_); + struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto); + int error; + + error = validate_actions(actions, n_actions, &rule->up.cr.flow, + ofproto->max_ports); + if (!error) { + ofproto->need_revalidate = true; + } + return error; + } + -/* Sends 'packet' out of port 'odp_port' within 'ofproto'. 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'. - * ++/* Sends 'packet' out of port 'odp_port' within 'p'. + * Returns 0 if successful, otherwise a positive errno value. */ + static int -send_packet(struct ofproto_dpif *ofproto, uint32_t odp_port, uint16_t vlan_tci, ++send_packet(struct ofproto_dpif *ofproto, uint32_t odp_port, + const struct ofpbuf *packet) + { + struct ofpbuf odp_actions; + int error; + + ofpbuf_init(&odp_actions, 32); - if (vlan_tci != 0) { - nl_msg_put_u32(&odp_actions, ODP_ACTION_ATTR_SET_DL_TCI, - ntohs(vlan_tci & ~VLAN_CFI)); - } + nl_msg_put_u32(&odp_actions, ODP_ACTION_ATTR_OUTPUT, odp_port); + error = dpif_execute(ofproto->dpif, odp_actions.data, odp_actions.size, + packet); + ofpbuf_uninit(&odp_actions); + + if (error) { + VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)", + ofproto->up.name, odp_port, strerror(error)); + } + return error; + } + + /* OpenFlow to ODP action translation. */ + + static void do_xlate_actions(const union ofp_action *in, size_t n_in, + struct action_xlate_ctx *ctx); + static bool xlate_normal(struct action_xlate_ctx *); + + static void + add_output_action(struct action_xlate_ctx *ctx, uint16_t ofp_port) + { + const struct ofport_dpif *ofport = get_ofp_port(ctx->ofproto, ofp_port); + uint16_t odp_port = ofp_port_to_odp_port(ofp_port); + + if (ofport) { + if (ofport->up.opp.config & htonl(OFPPC_NO_FWD)) { + /* Forwarding disabled on port. */ + return; + } + } else { + /* + * We don't have an ofport record for this port, but it doesn't hurt to + * allow forwarding to it anyhow. Maybe such a port will appear later + * and we're pre-populating the flow table. + */ + } + + nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_OUTPUT, odp_port); + ctx->nf_output_iface = ofp_port; + } + + static void + xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port) + { + if (ctx->recurse < MAX_RESUBMIT_RECURSION) { + struct rule_dpif *rule; + uint16_t old_in_port; + + /* Look up a flow with 'in_port' as the input port. Then restore the + * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will + * have surprising behavior). */ + old_in_port = ctx->flow.in_port; + ctx->flow.in_port = in_port; + rule = rule_dpif_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->up.actions, rule->up.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_dpif *ofproto, + uint16_t ofp_in_port, ovs_be32 mask, + uint16_t *nf_output_iface, struct ofpbuf *odp_actions) + { + struct ofport_dpif *ofport; + + HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) { + uint16_t ofp_port = ofport->up.ofp_port; + if (ofp_port != ofp_in_port && !(ofport->up.opp.config & mask)) { + nl_msg_put_u32(odp_actions, ODP_ACTION_ATTR_OUTPUT, + ofport->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 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: + xlate_normal(ctx); + break; + case OFPP_FLOOD: + flood_packets(ctx->ofproto, ctx->flow.in_port, htonl(OFPPC_NO_FLOOD), + &ctx->nf_output_iface, ctx->odp_actions); + break; + case OFPP_ALL: + flood_packets(ctx->ofproto, ctx->flow.in_port, htonl(0), + &ctx->nf_output_iface, ctx->odp_actions); + break; + case OFPP_CONTROLLER: + nl_msg_put_u64(ctx->odp_actions, ODP_ACTION_ATTR_CONTROLLER, max_len); + break; + case OFPP_LOCAL: + add_output_action(ctx, OFPP_LOCAL); + break; + default: + if (port != ctx->flow.in_port) { + add_output_action(ctx, 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) { + ofp_port = ctx->flow.in_port; + } + odp_port = ofp_port_to_odp_port(ofp_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) + { + 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; + } + + remove_pop_action(ctx); + nl_msg_put_u32(ctx->odp_actions, ODP_ACTION_ATTR_SET_PRIORITY, priority); + } + + 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)); + } + } + + 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) + { + state->vlan_tci = ctx->flow.vlan_tci; + state->tun_id = ctx->flow.tun_id; + } + + static void + update_reg_state(struct action_xlate_ctx *ctx, + const struct xlate_reg_state *state) + { + 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); + } + } + + static void + xlate_autopath(struct action_xlate_ctx *ctx, + const struct nx_action_autopath *naa) + { + uint16_t ofp_port = ntohl(naa->id); + struct ofport_dpif *port = get_ofp_port(ctx->ofproto, ofp_port); + + if (!port || !port->bundle) { + ofp_port = OFPP_NONE; + } else if (port->bundle->bond) { + /* Autopath does not support VLAN hashing. */ + struct ofport_dpif *slave = bond_choose_output_slave( + port->bundle->bond, &ctx->flow, OFP_VLAN_NONE, &ctx->tags); + if (slave) { + ofp_port = slave->up.ofp_port; + } + } + autopath_execute(naa, &ctx->flow, ofp_port); + } + + static void + xlate_nicira_action(struct action_xlate_ctx *ctx, + const struct nx_action_header *nah) + { + const struct nx_action_resubmit *nar; + const struct nx_action_set_tunnel *nast; + const struct nx_action_set_queue *nasq; + const struct nx_action_multipath *nam; + const struct nx_action_autopath *naa; + enum nx_action_subtype subtype = ntohs(nah->subtype); + struct xlate_reg_state state; + ovs_be64 tun_id; + + assert(nah->vendor == htonl(NX_VENDOR_ID)); + switch (subtype) { + case NXAST_RESUBMIT: + nar = (const struct nx_action_resubmit *) nah; + xlate_table_action(ctx, ntohs(nar->in_port)); + break; + + case NXAST_SET_TUNNEL: + nast = (const struct nx_action_set_tunnel *) nah; + tun_id = htonll(ntohl(nast->tun_id)); + nl_msg_put_be64(ctx->odp_actions, ODP_ACTION_ATTR_SET_TUNNEL, tun_id); + ctx->flow.tun_id = tun_id; + break; + + case NXAST_DROP_SPOOFED_ARP: + if (ctx->flow.dl_type == htons(ETH_TYPE_ARP)) { + nl_msg_put_flag(ctx->odp_actions, + ODP_ACTION_ATTR_DROP_SPOOFED_ARP); + } + break; + + case NXAST_SET_QUEUE: + nasq = (const struct nx_action_set_queue *) nah; + xlate_set_queue_action(ctx, nasq); + break; + + case NXAST_POP_QUEUE: + add_pop_action(ctx); + break; + + case NXAST_REG_MOVE: + save_reg_state(ctx, &state); + nxm_execute_reg_move((const struct nx_action_reg_move *) nah, + &ctx->flow); + update_reg_state(ctx, &state); + break; + + case NXAST_REG_LOAD: + save_reg_state(ctx, &state); + nxm_execute_reg_load((const struct nx_action_reg_load *) nah, + &ctx->flow); + update_reg_state(ctx, &state); + break; + + case NXAST_NOTE: + /* Nothing to do. */ + break; + + case NXAST_SET_TUNNEL64: + tun_id = ((const struct nx_action_set_tunnel64 *) nah)->tun_id; + nl_msg_put_be64(ctx->odp_actions, ODP_ACTION_ATTR_SET_TUNNEL, tun_id); + ctx->flow.tun_id = tun_id; + break; + + case NXAST_MULTIPATH: + nam = (const struct nx_action_multipath *) nah; + multipath_execute(nam, &ctx->flow); + break; + + case NXAST_AUTOPATH: + naa = (const struct nx_action_autopath *) nah; + xlate_autopath(ctx, naa); + break; + + /* If you add a new action here that modifies flow data, don't forget to + * update the flow key in ctx->flow at the same time. */ + + case NXAST_SNAT__OBSOLETE: + default: + VLOG_DBG_RL(&rl, "unknown Nicira action type %d", (int) subtype); + break; + } + } + + static void + do_xlate_actions(const union ofp_action *in, size_t n_in, + struct action_xlate_ctx *ctx) + { + const struct ofport_dpif *port; + struct actions_iterator iter; + const union ofp_action *ia; + + port = get_ofp_port(ctx->ofproto, ctx->flow.in_port); + if (port + && port->up.opp.config & htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP) && + port->up.opp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp) + ? htonl(OFPPC_NO_RECV_STP) + : htonl(OFPPC_NO_RECV))) { + /* Drop this flow. */ + return; + } + + for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) { + enum ofp_action_type type = ntohs(ia->type); + const struct ofp_action_dl_addr *oada; + + switch (type) { + case OFPAT_OUTPUT: + xlate_output_action(ctx, &ia->output); + break; + + case OFPAT_SET_VLAN_VID: + ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK); + ctx->flow.vlan_tci |= ia->vlan_vid.vlan_vid | htons(VLAN_CFI); + xlate_set_dl_tci(ctx); + break; + + case OFPAT_SET_VLAN_PCP: + ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK); + ctx->flow.vlan_tci |= htons( + (ia->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT) | VLAN_CFI); + xlate_set_dl_tci(ctx); + break; + + case OFPAT_STRIP_VLAN: + ctx->flow.vlan_tci = htons(0); + xlate_set_dl_tci(ctx); + break; + + case OFPAT_SET_DL_SRC: + oada = ((struct ofp_action_dl_addr *) ia); + nl_msg_put_unspec(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_SRC, + oada->dl_addr, ETH_ADDR_LEN); + memcpy(ctx->flow.dl_src, oada->dl_addr, ETH_ADDR_LEN); + break; + + case OFPAT_SET_DL_DST: + oada = ((struct ofp_action_dl_addr *) ia); + nl_msg_put_unspec(ctx->odp_actions, ODP_ACTION_ATTR_SET_DL_DST, + oada->dl_addr, ETH_ADDR_LEN); + memcpy(ctx->flow.dl_dst, oada->dl_addr, ETH_ADDR_LEN); + break; + + case OFPAT_SET_NW_SRC: + nl_msg_put_be32(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_SRC, + ia->nw_addr.nw_addr); + ctx->flow.nw_src = ia->nw_addr.nw_addr; + break; + + case OFPAT_SET_NW_DST: + nl_msg_put_be32(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_DST, + ia->nw_addr.nw_addr); + ctx->flow.nw_dst = ia->nw_addr.nw_addr; + break; + + case OFPAT_SET_NW_TOS: + nl_msg_put_u8(ctx->odp_actions, ODP_ACTION_ATTR_SET_NW_TOS, + ia->nw_tos.nw_tos); + ctx->flow.nw_tos = ia->nw_tos.nw_tos; + break; + + case OFPAT_SET_TP_SRC: + nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_TP_SRC, + ia->tp_port.tp_port); + ctx->flow.tp_src = ia->tp_port.tp_port; + break; + + case OFPAT_SET_TP_DST: + nl_msg_put_be16(ctx->odp_actions, ODP_ACTION_ATTR_SET_TP_DST, + ia->tp_port.tp_port); + ctx->flow.tp_dst = ia->tp_port.tp_port; + break; + + case OFPAT_VENDOR: + xlate_nicira_action(ctx, (const struct nx_action_header *) ia); + break; + + case OFPAT_ENQUEUE: + xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia); + break; + + default: + VLOG_DBG_RL(&rl, "unknown action type %d", (int) type); + break; + } + } + } + + static void + action_xlate_ctx_init(struct action_xlate_ctx *ctx, + struct ofproto_dpif *ofproto, const struct flow *flow, + const struct ofpbuf *packet) + { + ctx->ofproto = ofproto; + ctx->flow = *flow; + ctx->packet = packet; + ctx->resubmit_hook = NULL; + } + + static struct ofpbuf * + xlate_actions(struct action_xlate_ctx *ctx, + const union ofp_action *in, size_t n_in) + { + COVERAGE_INC(ofproto_dpif_xlate); + + 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 (process_special(ctx->ofproto, &ctx->flow, ctx->packet)) { + 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->up.connmgr, &ctx->flow, + ctx->odp_actions->data, + ctx->odp_actions->size)) { + ctx->may_set_up_flow = false; + } + + return ctx->odp_actions; + } + + /* OFPP_NORMAL implementation. */ + + struct dst { + struct ofport_dpif *port; + uint16_t vlan; + }; + + struct dst_set { + struct dst builtin[32]; + struct dst *dsts; + size_t n, allocated; + }; + + static void dst_set_init(struct dst_set *); + static void dst_set_add(struct dst_set *, const struct dst *); + static void dst_set_free(struct dst_set *); + + static struct ofport_dpif *ofbundle_get_a_port(const struct ofbundle *); + + static bool + set_dst(struct action_xlate_ctx *ctx, struct dst *dst, + const struct ofbundle *in_bundle, const struct ofbundle *out_bundle) + { + dst->vlan = (out_bundle->vlan >= 0 ? OFP_VLAN_NONE + : in_bundle->vlan >= 0 ? in_bundle->vlan + : ctx->flow.vlan_tci == 0 ? OFP_VLAN_NONE + : vlan_tci_to_vid(ctx->flow.vlan_tci)); + + dst->port = (!out_bundle->bond + ? ofbundle_get_a_port(out_bundle) + : bond_choose_output_slave(out_bundle->bond, &ctx->flow, + dst->vlan, &ctx->tags)); + + return dst->port != NULL; + } + + static int + mirror_mask_ffs(mirror_mask_t mask) + { + BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask)); + return ffs(mask); + } + + static void + dst_set_init(struct dst_set *set) + { + set->dsts = set->builtin; + set->n = 0; + set->allocated = ARRAY_SIZE(set->builtin); + } + + static void + dst_set_add(struct dst_set *set, const struct dst *dst) + { + if (set->n >= set->allocated) { + size_t new_allocated; + struct dst *new_dsts; + + new_allocated = set->allocated * 2; + new_dsts = xmalloc(new_allocated * sizeof *new_dsts); + memcpy(new_dsts, set->dsts, set->n * sizeof *new_dsts); + + dst_set_free(set); + + set->dsts = new_dsts; + set->allocated = new_allocated; + } + set->dsts[set->n++] = *dst; + } + + static void + dst_set_free(struct dst_set *set) + { + if (set->dsts != set->builtin) { + free(set->dsts); + } + } + + static bool + dst_is_duplicate(const struct dst_set *set, const struct dst *test) + { + size_t i; + for (i = 0; i < set->n; i++) { + if (set->dsts[i].vlan == test->vlan + && set->dsts[i].port == test->port) { + return true; + } + } + return false; + } + + static bool + ofbundle_trunks_vlan(const struct ofbundle *bundle, uint16_t vlan) + { + return bundle->vlan < 0 && vlan_bitmap_contains(bundle->trunks, vlan); + } + + static bool + ofbundle_includes_vlan(const struct ofbundle *bundle, uint16_t vlan) + { + return vlan == bundle->vlan || ofbundle_trunks_vlan(bundle, vlan); + } + + /* Returns an arbitrary interface within 'bundle'. */ + static struct ofport_dpif * + ofbundle_get_a_port(const struct ofbundle *bundle) + { + return CONTAINER_OF(list_front(&bundle->ports), + struct ofport_dpif, bundle_node); + } + + static void + compose_dsts(struct action_xlate_ctx *ctx, uint16_t vlan, + const struct ofbundle *in_bundle, + const struct ofbundle *out_bundle, struct dst_set *set) + { + struct dst dst; + + if (out_bundle == OFBUNDLE_FLOOD) { + struct ofbundle *bundle; + + HMAP_FOR_EACH (bundle, hmap_node, &ctx->ofproto->bundles) { + if (bundle != in_bundle + && ofbundle_includes_vlan(bundle, vlan) + && bundle->floodable + && !bundle->mirror_out + && set_dst(ctx, &dst, in_bundle, bundle)) { + dst_set_add(set, &dst); + } + } + ctx->nf_output_iface = NF_OUT_FLOOD; + } else if (out_bundle && set_dst(ctx, &dst, in_bundle, out_bundle)) { + dst_set_add(set, &dst); + ctx->nf_output_iface = dst.port->odp_port; + } + } + + static bool + vlan_is_mirrored(const struct ofmirror *m, int vlan) + { + return vlan_bitmap_contains(m->vlans, vlan); + } + + static void + compose_mirror_dsts(struct action_xlate_ctx *ctx, + uint16_t vlan, const struct ofbundle *in_bundle, + struct dst_set *set) + { + struct ofproto_dpif *ofproto = ctx->ofproto; + mirror_mask_t mirrors; + int flow_vlan; + size_t i; + + mirrors = in_bundle->src_mirrors; + for (i = 0; i < set->n; i++) { + mirrors |= set->dsts[i].port->bundle->dst_mirrors; + } + + if (!mirrors) { + return; + } + + flow_vlan = vlan_tci_to_vid(ctx->flow.vlan_tci); + if (flow_vlan == 0) { + flow_vlan = OFP_VLAN_NONE; + } + + while (mirrors) { + struct ofmirror *m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1]; + if (vlan_is_mirrored(m, vlan)) { + struct dst dst; + + if (m->out) { + if (set_dst(ctx, &dst, in_bundle, m->out) + && !dst_is_duplicate(set, &dst)) { + dst_set_add(set, &dst); + } + } else { + struct ofbundle *bundle; + + HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) { + if (ofbundle_includes_vlan(bundle, m->out_vlan) + && set_dst(ctx, &dst, in_bundle, bundle)) + { + if (bundle->vlan < 0) { + dst.vlan = m->out_vlan; + } + if (dst_is_duplicate(set, &dst)) { + continue; + } + + /* Use the vlan tag on the original flow instead of + * the one passed in the vlan parameter. This ensures + * that we compare the vlan from before any implicit + * tagging tags place. This is necessary because + * dst->vlan is the final vlan, after removing implicit + * tags. */ + if (bundle == in_bundle && dst.vlan == flow_vlan) { + /* Don't send out input port on same VLAN. */ + continue; + } + dst_set_add(set, &dst); + } + } + } + } + mirrors &= mirrors - 1; + } + } + + static void + compose_actions(struct action_xlate_ctx *ctx, uint16_t vlan, + const struct ofbundle *in_bundle, + const struct ofbundle *out_bundle) + { + uint16_t initial_vlan, cur_vlan; + const struct dst *dst; + struct dst_set set; + + dst_set_init(&set); + compose_dsts(ctx, vlan, in_bundle, out_bundle, &set); + compose_mirror_dsts(ctx, vlan, in_bundle, &set); + + /* Output all the packets we can without having to change the VLAN. */ + initial_vlan = vlan_tci_to_vid(ctx->flow.vlan_tci); + if (initial_vlan == 0) { + initial_vlan = OFP_VLAN_NONE; + } + for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) { + if (dst->vlan != initial_vlan) { + continue; + } + nl_msg_put_u32(ctx->odp_actions, + ODP_ACTION_ATTR_OUTPUT, dst->port->odp_port); + } + + /* Then output the rest. */ + cur_vlan = initial_vlan; + for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) { + if (dst->vlan == initial_vlan) { + continue; + } + if (dst->vlan != cur_vlan) { + if (dst->vlan == OFP_VLAN_NONE) { + nl_msg_put_flag(ctx->odp_actions, ODP_ACTION_ATTR_STRIP_VLAN); + } else { + ovs_be16 tci; + tci = htons(dst->vlan & VLAN_VID_MASK); + tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK); + nl_msg_put_be16(ctx->odp_actions, + ODP_ACTION_ATTR_SET_DL_TCI, tci); + } + cur_vlan = dst->vlan; + } + nl_msg_put_u32(ctx->odp_actions, + ODP_ACTION_ATTR_OUTPUT, dst->port->odp_port); + } + + dst_set_free(&set); + } + + /* Returns the effective vlan of a packet, taking into account both the + * 802.1Q header and implicitly tagged ports. A value of 0 indicates that + * the packet is untagged and -1 indicates it has an invalid header and + * should be dropped. */ + static int + flow_get_vlan(struct ofproto_dpif *ofproto, const struct flow *flow, + struct ofbundle *in_bundle, bool have_packet) + { + int vlan = vlan_tci_to_vid(flow->vlan_tci); + if (in_bundle->vlan >= 0) { + if (vlan) { + if (have_packet) { + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); + VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged " + "packet received on port %s configured with " + "implicit VLAN %"PRIu16, + ofproto->up.name, vlan, + in_bundle->name, in_bundle->vlan); + } + return -1; + } + vlan = in_bundle->vlan; + } else { + if (!ofbundle_includes_vlan(in_bundle, vlan)) { + if (have_packet) { + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); + VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged " + "packet received on port %s not configured for " + "trunking VLAN %d", + ofproto->up.name, vlan, in_bundle->name, vlan); + } + return -1; + } + } + + return vlan; + } + + /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after + * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to + * indicate this; newer upstream kernels use gratuitous ARP requests. */ + static bool + is_gratuitous_arp(const struct flow *flow) + { + return (flow->dl_type == htons(ETH_TYPE_ARP) + && eth_addr_is_broadcast(flow->dl_dst) + && (flow->nw_proto == ARP_OP_REPLY + || (flow->nw_proto == ARP_OP_REQUEST + && flow->nw_src == flow->nw_dst))); + } + + static void + update_learning_table(struct ofproto_dpif *ofproto, + const struct flow *flow, int vlan, + struct ofbundle *in_bundle) + { + struct mac_entry *mac; + + if (!mac_learning_may_learn(ofproto->ml, flow->dl_src, vlan)) { + return; + } + + mac = mac_learning_insert(ofproto->ml, flow->dl_src, vlan); + if (is_gratuitous_arp(flow)) { + /* We don't want to learn from gratuitous ARP packets that are + * reflected back over bond slaves so we lock the learning table. */ + if (!in_bundle->bond) { + mac_entry_set_grat_arp_lock(mac); + } else if (mac_entry_is_grat_arp_locked(mac)) { + return; + } + } + + if (mac_entry_is_new(mac) || mac->port.p != in_bundle) { + /* The log messages here could actually be useful in debugging, + * so keep the rate limit relatively high. */ + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); + VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " + "on port %s in VLAN %d", + ofproto->up.name, ETH_ADDR_ARGS(flow->dl_src), + in_bundle->name, vlan); + + mac->port.p = in_bundle; + tag_set_add(&ofproto->revalidate_set, + mac_learning_changed(ofproto->ml, mac)); + } + } + + /* Determines whether packets in 'flow' within 'br' should be forwarded or + * dropped. Returns true if they may be forwarded, false if they should be + * dropped. + * + * If 'have_packet' is true, it indicates that the caller is processing a + * received packet. If 'have_packet' is false, then the caller is just + * revalidating an existing flow because configuration has changed. Either + * way, 'have_packet' only affects logging (there is no point in logging errors + * during revalidation). + * + * Sets '*in_portp' to the input port. This will be a null pointer if + * flow->in_port does not designate a known input port (in which case + * is_admissible() returns false). + * + * When returning true, sets '*vlanp' to the effective VLAN of the input + * packet, as returned by flow_get_vlan(). + * + * May also add tags to '*tags', although the current implementation only does + * so in one special case. + */ + static bool + is_admissible(struct ofproto_dpif *ofproto, const struct flow *flow, + bool have_packet, + tag_type *tags, int *vlanp, struct ofbundle **in_bundlep) + { + struct ofport_dpif *in_port; + struct ofbundle *in_bundle; + int vlan; + + /* Find the port and bundle for the received packet. */ + in_port = get_ofp_port(ofproto, flow->in_port); + *in_bundlep = in_bundle = in_port ? in_port->bundle : NULL; + if (!in_port || !in_bundle) { + /* No interface? Something fishy... */ + if (have_packet) { + /* Odd. A few possible reasons here: + * + * - We deleted a port but there are still a few packets queued up + * from it. + * + * - Someone externally added a port (e.g. "ovs-dpctl add-if") that + * we don't know about. + * + * - Packet arrived on the local port but the local port is not + * part of a bundle. + */ + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); + + VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " + "port %"PRIu16, + ofproto->up.name, flow->in_port); + } + return false; + } + *vlanp = vlan = flow_get_vlan(ofproto, flow, in_bundle, have_packet); + if (vlan < 0) { + return false; + } + + /* Drop frames for reserved multicast addresses. */ + if (eth_addr_is_reserved(flow->dl_dst)) { + return false; + } + + /* Drop frames on bundles reserved for mirroring. */ + if (in_bundle->mirror_out) { + if (have_packet) { + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); + VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " + "%s, which is reserved exclusively for mirroring", + ofproto->up.name, in_bundle->name); + } + return false; + } + + if (in_bundle->bond) { + struct mac_entry *mac; + + switch (bond_check_admissibility(in_bundle->bond, in_port, + flow->dl_dst, tags)) { + case BV_ACCEPT: + break; + + case BV_DROP: + return false; + + case BV_DROP_IF_MOVED: + mac = mac_learning_lookup(ofproto->ml, flow->dl_src, vlan, NULL); + if (mac && mac->port.p != in_bundle && + (!is_gratuitous_arp(flow) + || mac_entry_is_grat_arp_locked(mac))) { + return false; + } + break; + } + } + + return true; + } + + /* If the composed actions may be applied to any packet in the given 'flow', + * returns true. Otherwise, the actions should only be applied to 'packet', or + * not at all, if 'packet' was NULL. */ + static bool + xlate_normal(struct action_xlate_ctx *ctx) + { + struct ofbundle *in_bundle; + struct ofbundle *out_bundle; + struct mac_entry *mac; + int vlan; + + /* Check whether we should drop packets in this flow. */ + if (!is_admissible(ctx->ofproto, &ctx->flow, ctx->packet != NULL, + &ctx->tags, &vlan, &in_bundle)) { + out_bundle = NULL; + goto done; + } + + /* Learn source MAC (but don't try to learn from revalidation). */ + if (ctx->packet) { + update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle); + } + + /* Determine output bundle. */ + mac = mac_learning_lookup(ctx->ofproto->ml, ctx->flow.dl_dst, vlan, + &ctx->tags); + if (mac) { + out_bundle = mac->port.p; + } else if (!ctx->packet && !eth_addr_is_multicast(ctx->flow.dl_dst)) { + /* If we are revalidating but don't have a learning entry then eject + * the flow. Installing a flow that floods packets opens up a window + * of time where we could learn from a packet reflected on a bond and + * blackhole packets before the learning table is updated to reflect + * the correct port. */ + return false; + } else { + out_bundle = OFBUNDLE_FLOOD; + } + + /* Don't send packets out their input bundles. */ + if (in_bundle == out_bundle) { + out_bundle = NULL; + } + + done: + if (in_bundle) { + compose_actions(ctx, vlan, in_bundle, out_bundle); + } + + return true; + } + + static bool + get_drop_frags(struct ofproto *ofproto_) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + bool drop_frags; + + dpif_get_drop_frags(ofproto->dpif, &drop_frags); + return drop_frags; + } + + static void + set_drop_frags(struct ofproto *ofproto_, bool drop_frags) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + + dpif_set_drop_frags(ofproto->dpif, drop_frags); + } + + static int + packet_out(struct ofproto *ofproto_, struct ofpbuf *packet, + const struct flow *flow, + const union ofp_action *ofp_actions, size_t n_ofp_actions) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + int error; + + error = validate_actions(ofp_actions, n_ofp_actions, flow, + ofproto->max_ports); + if (!error) { + struct action_xlate_ctx ctx; + struct ofpbuf *odp_actions; + + action_xlate_ctx_init(&ctx, ofproto, flow, packet); + odp_actions = xlate_actions(&ctx, ofp_actions, n_ofp_actions); + dpif_execute(ofproto->dpif, odp_actions->data, odp_actions->size, + packet); + ofpbuf_delete(odp_actions); + } + return error; + } + + static void + get_netflow_ids(const struct ofproto *ofproto_, + uint8_t *engine_type, uint8_t *engine_id) + { + struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_); + + dpif_get_netflow_ids(ofproto->dpif, engine_type, engine_id); + } + + static struct ofproto_dpif * + ofproto_dpif_lookup(const char *name) + { + struct ofproto *ofproto = ofproto_lookup(name); + return (ofproto && ofproto->ofproto_class == &ofproto_dpif_class + ? ofproto_dpif_cast(ofproto) + : NULL); + } + + static void + ofproto_unixctl_fdb_show(struct unixctl_conn *conn, + const char *args, void *aux OVS_UNUSED) + { + struct ds ds = DS_EMPTY_INITIALIZER; + const struct ofproto_dpif *ofproto; + const struct mac_entry *e; + + ofproto = ofproto_dpif_lookup(args); + if (!ofproto) { + unixctl_command_reply(conn, 501, "no such bridge"); + return; + } + + ds_put_cstr(&ds, " port VLAN MAC Age\n"); + LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) { + struct ofbundle *bundle = e->port.p; + ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n", + ofbundle_get_a_port(bundle)->odp_port, + e->vlan, ETH_ADDR_ARGS(e->mac), mac_entry_age(e)); + } + unixctl_command_reply(conn, 200, ds_cstr(&ds)); + ds_destroy(&ds); + } + + struct ofproto_trace { + struct action_xlate_ctx ctx; + struct flow flow; + struct ds *result; + }; + + static void + trace_format_rule(struct ds *result, int level, const struct rule *rule) + { + 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'); + } + + static void + trace_format_flow(struct ds *result, int level, const char *title, + struct ofproto_trace *trace) + { + ds_put_char_multiple(result, '\t', level); + ds_put_format(result, "%s: ", title); + if (flow_equal(&trace->ctx.flow, &trace->flow)) { + ds_put_cstr(result, "unchanged"); + } else { + flow_format(result, &trace->ctx.flow); + trace->flow = trace->ctx.flow; + } + ds_put_char(result, '\n'); + } + + static void + trace_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *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->up); + } + + static void + ofproto_unixctl_trace(struct unixctl_conn *conn, const char *args_, + void *aux OVS_UNUSED) + { + char *dpname, *in_port_s, *tun_id_s, *packet_s; + char *args = xstrdup(args_); + char *save_ptr = NULL; + struct ofproto_dpif *ofproto; + struct ofpbuf packet; + struct rule_dpif *rule; + struct ds result; + struct flow flow; + uint16_t in_port; + ovs_be64 tun_id; + char *s; + + ofpbuf_init(&packet, strlen(args) / 2); + ds_init(&result); + + dpname = strtok_r(args, " ", &save_ptr); + tun_id_s = strtok_r(NULL, " ", &save_ptr); + in_port_s = strtok_r(NULL, " ", &save_ptr); + packet_s = strtok_r(NULL, "", &save_ptr); /* Get entire rest of line. */ + if (!dpname || !in_port_s || !packet_s) { + unixctl_command_reply(conn, 501, "Bad command syntax"); + goto exit; + } + + ofproto = ofproto_dpif_lookup(dpname); + if (!ofproto) { + unixctl_command_reply(conn, 501, "Unknown ofproto (use ofproto/list " + "for help)"); + goto exit; + } + + tun_id = htonll(strtoull(tun_id_s, NULL, 0)); + in_port = ofp_port_to_odp_port(atoi(in_port_s)); + + 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'); + + rule = rule_dpif_lookup(ofproto, &flow); + trace_format_rule(&result, 0, &rule->up); + 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->up.actions, rule->up.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); + } + + unixctl_command_reply(conn, 200, ds_cstr(&result)); + + exit: + ds_destroy(&result); + ofpbuf_uninit(&packet); + free(args); + } + + static void + ofproto_dpif_unixctl_init(void) + { + static bool registered; + if (registered) { + return; + } + registered = true; + + unixctl_command_register("ofproto/trace", ofproto_unixctl_trace, NULL); + unixctl_command_register("fdb/show", ofproto_unixctl_fdb_show, NULL); + } + + const struct ofproto_class ofproto_dpif_class = { + enumerate_types, + enumerate_names, + del, + alloc, + construct, + destruct, + dealloc, + run, + wait, + flush, + get_features, + get_tables, + port_alloc, + port_construct, + port_destruct, + port_dealloc, + port_modified, + port_reconfigured, + port_query_by_name, + port_add, + port_del, + port_dump_start, + port_dump_next, + port_dump_done, + port_poll, + port_poll_wait, + port_is_lacp_current, + rule_alloc, + rule_construct, + rule_destruct, + rule_dealloc, + rule_get_stats, + rule_execute, + rule_modify_actions, + get_drop_frags, + set_drop_frags, + packet_out, + set_netflow, + get_netflow_ids, + set_sflow, + set_cfm, + get_cfm, + bundle_set, + bundle_remove, + mirror_set, + set_flood_vlans, + is_mirror_output_bundle, + }; diff --cc tests/ofproto-macros.at index fabdb849,d5ff2ad6..39275506 --- a/tests/ofproto-macros.at +++ b/tests/ofproto-macros.at @@@ -7,14 -7,8 +7,14 @@@ m4_define([OFPROTO_START] trap 'kill `cat ovs-openflowd.pid`' 0 AT_CAPTURE_FILE([ovs-openflowd.log]) AT_CHECK( - [ovs-openflowd --detach --pidfile --enable-dummy --log-file dummy@br0 none --datapath-id=fedcba9876543210 $1], + [ovs-openflowd --detach --pidfile --enable-dummy --log-file --fail=closed dummy@br0 none --datapath-id=fedcba9876543210 $1], - [0], [ignore], [ignore]) + [0], [], [stderr]) + AT_CHECK([[sed < stderr ' +/vlog|INFO|opened log file/d +/openflowd|INFO|Open vSwitch version/d +/openflowd|INFO|OpenFlow protocol version/d +/ofproto|INFO|using datapath ID/d +/ofproto|INFO|datapath ID changed to fedcba9876543210/d']]) ]) m4_define([OFPROTO_STOP], diff --cc tests/ovs-ofctl.at index c23945f5,3a8f0b6d..997cc306 --- a/tests/ovs-ofctl.at +++ b/tests/ovs-ofctl.at @@@ -32,9 -32,21 +32,10 @@@ NXT_SET_FLOW_FORMAT: format=nx NXT_FLOW_MOD: ADD tun_id=0x1234 cookie:0x5678 actions=FLOOD NXT_FLOW_MOD: ADD actions=set_tunnel:0x1234,set_tunnel64:0x9876,set_tunnel64:0x123456789 NXT_FLOW_MOD: ADD actions=multipath(eth_src,50,hrw,12,0,NXM_NX_REG0[0..3]),multipath(symmetric_l4,1024,iter_hash,5000,5050,NXM_NX_REG0[0..12]) - NXT_FLOW_MOD: ADD actions=drop - NXT_FLOW_MOD: ADD tun_id=0x1234000056780000/0xffff0000ffff0000 actions=drop + NXT_FLOW_MOD_TABLE_ID: enable + NXT_FLOW_MOD: ADD table_id:1 actions=drop + NXT_FLOW_MOD: ADD table_id:255 tun_id=0x1234000056780000/0xffff0000ffff0000 actions=drop ]]) -AT_CHECK([sed 's/.*|//' stderr], [0], [dnl -normalization changed ofp_match, details: - pre: wildcards= 0x3820f8 in_port=65534 dl_src=00:0a:e4:25:6b:b0 dl_dst=00:00:00:00:00:00 dl_vlan= 9 dl_vlan_pcp= 0 dl_type= 0 nw_tos= 0 nw_proto= 0 nw_src= 0 nw_dst= 0 tp_src= 0 tp_dst= 0 -post: wildcards= 0x3ffff8 in_port=65534 dl_src=00:0a:e4:25:6b:b0 dl_dst=00:00:00:00:00:00 dl_vlan= 9 dl_vlan_pcp= 0 dl_type= 0 nw_tos= 0 nw_proto= 0 nw_src= 0 nw_dst= 0 tp_src= 0 tp_dst= 0 -normalization changed ofp_match, details: - pre: wildcards= 0x3820ff in_port= 0 dl_src=00:00:00:00:00:00 dl_dst=00:00:00:00:00:00 dl_vlan= 0 dl_vlan_pcp= 0 dl_type= 0 nw_tos= 0 nw_proto= 0 nw_src= 0 nw_dst= 0 tp_src= 0 tp_dst= 0 -post: wildcards= 0x3fffff in_port= 0 dl_src=00:00:00:00:00:00 dl_dst=00:00:00:00:00:00 dl_vlan= 0 dl_vlan_pcp= 0 dl_type= 0 nw_tos= 0 nw_proto= 0 nw_src= 0 nw_dst= 0 tp_src= 0 tp_dst= 0 -normalization changed ofp_match, details: - pre: wildcards= 0x3820ff in_port= 0 dl_src=00:00:00:00:00:00 dl_dst=00:00:00:00:00:00 dl_vlan= 0 dl_vlan_pcp= 0 dl_type= 0 nw_tos= 0 nw_proto= 0 nw_src= 0 nw_dst= 0 tp_src= 0 tp_dst= 0 -post: wildcards= 0x3fffff in_port= 0 dl_src=00:00:00:00:00:00 dl_dst=00:00:00:00:00:00 dl_vlan= 0 dl_vlan_pcp= 0 dl_type= 0 nw_tos= 0 nw_proto= 0 nw_src= 0 nw_dst= 0 tp_src= 0 tp_dst= 0 -]) AT_CLEANUP AT_SETUP([ovs-ofctl -F nxm parse-flows]) diff --cc vswitchd/bridge.c index 9accbddd,dd0d1b2a..3faeee1e --- a/vswitchd/bridge.c +++ b/vswitchd/bridge.c @@@ -1675,32 -1626,10 +1626,14 @@@ bridge_create(const struct ovsrec_bridg assert(!bridge_lookup(br_cfg->name)); br = xzalloc(sizeof *br); - error = dpif_create_and_open(br_cfg->name, br_cfg->datapath_type, - &br->dpif); - if (error) { - free(br); - return NULL; - } - - error = ofproto_create(br_cfg->name, br_cfg->datapath_type, &bridge_ofhooks, - br, &br->ofproto); - if (error) { - VLOG_ERR("failed to create switch %s: %s", br_cfg->name, - strerror(error)); - dpif_delete(br->dpif); - dpif_close(br->dpif); - free(br); - return NULL; - } - br->name = xstrdup(br_cfg->name); + br->type = xstrdup(ofproto_normalize_type(br_cfg->datapath_type)); br->cfg = br_cfg; - br->ml = mac_learning_create(); - eth_addr_nicira_random(br->default_ea); + + /* Derive the default Ethernet address from the bridge's UUID. This should + * be unique and it will be stable between ovs-vswitchd runs. */ + memcpy(br->default_ea, &br_cfg->header_.uuid, ETH_ADDR_LEN); + eth_addr_mark_random(br->default_ea); hmap_init(&br->ports); hmap_init(&br->ifaces);