/*
- * Copyright (c) 2009, 2010, 2011, 2012 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include "odp-util.h"
#include "ofp-util.h"
#include "ofpbuf.h"
+#include "ofp-actions.h"
+#include "ofp-parse.h"
#include "ofp-print.h"
+#include "ofproto-dpif-governor.h"
#include "ofproto-dpif-sflow.h"
#include "poll-loop.h"
+#include "simap.h"
#include "timer.h"
#include "unaligned.h"
#include "unixctl.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);
+COVERAGE_DEFINE(facet_suppress);
/* Maximum depth of flow table recursion (due to resubmit actions) in a
* flow translation. */
/* Number of implemented OpenFlow tables. */
enum { N_TABLES = 255 };
-BUILD_ASSERT_DECL(N_TABLES >= 1 && N_TABLES <= 255);
+enum { TBL_INTERNAL = N_TABLES - 1 }; /* Used for internal hidden rules. */
+BUILD_ASSERT_DECL(N_TABLES >= 2 && N_TABLES <= 255);
struct ofport_dpif;
struct ofproto_dpif;
}
static struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *,
- const struct flow *, uint8_t table);
+ const struct flow *);
+static struct rule_dpif *rule_dpif_lookup__(struct ofproto_dpif *,
+ const struct flow *,
+ uint8_t table);
+static void rule_credit_stats(struct rule_dpif *,
+ const struct dpif_flow_stats *);
static void flow_push_stats(struct rule_dpif *, const struct flow *,
- uint64_t packets, uint64_t bytes,
- long long int used);
-
+ const struct dpif_flow_stats *);
static tag_type rule_calculate_tag(const struct flow *,
const struct flow_wildcards *,
uint32_t basis);
uint64_t packets, uint64_t bytes);
struct ofbundle {
- struct ofproto_dpif *ofproto; /* Owning ofproto. */
struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
+ struct ofproto_dpif *ofproto; /* Owning ofproto. */
void *aux; /* Key supplied by ofproto's client. */
char *name; /* Identifier for log messages. */
static void bundle_del_port(struct ofport_dpif *);
static void bundle_run(struct ofbundle *);
static void bundle_wait(struct ofbundle *);
-static struct ofbundle *lookup_input_bundle(struct ofproto_dpif *,
- uint16_t in_port, bool warn);
+static struct ofbundle *lookup_input_bundle(const struct ofproto_dpif *,
+ uint16_t in_port, bool warn,
+ struct ofport_dpif **in_ofportp);
/* A controller may use OFPP_NONE as the ingress port to indicate that
* it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
* revalidating without a packet to refer to. */
const struct ofpbuf *packet;
- /* Should OFPP_NORMAL update the MAC learning table? We want to update it
- * if we are actually processing a packet, or if we are accounting for
- * packets that the datapath has processed, but not if we are just
- * revalidating. */
- bool may_learn_macs;
-
- /* Should "learn" actions update the flow table? We want to update it if
- * we are actually processing a packet, or in most cases if we are
- * accounting for packets that the datapath has processed, but not if we
- * are just revalidating. */
- bool may_flow_mod;
+ /* Should OFPP_NORMAL update the MAC learning table? Should "learn"
+ * actions update the flow table?
+ *
+ * We want to update these tables if we are actually processing a packet,
+ * or if we are accounting for packets that the datapath has processed, but
+ * not if we are just revalidating. */
+ bool may_learn;
/* The rule that we are currently translating, or NULL. */
struct rule_dpif *rule;
* timeouts.) */
uint8_t tcp_flags;
- /* If nonnull, called just before executing a resubmit action. In
- * addition, disables logging of traces when the recursion depth is
- * exceeded.
+ /* If nonnull, flow translation calls this function just before executing a
+ * resubmit or OFPP_TABLE action. In addition, disables logging of traces
+ * when the recursion depth is exceeded.
+ *
+ * 'rule' is the rule being submitted into. It will be null if the
+ * resubmit or OFPP_TABLE action didn't find a matching rule.
*
* 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 *);
+ void (*resubmit_hook)(struct action_xlate_ctx *, struct rule_dpif *rule);
+
+ /* If nonnull, flow translation credits the specified statistics to each
+ * rule reached through a resubmit or OFPP_TABLE action.
+ *
+ * This is normally null so the client has to set it manually after
+ * calling action_xlate_ctx_init(). */
+ const struct dpif_flow_stats *resubmit_stats;
/* 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 actions. */
- bool may_set_up_flow; /* True ordinarily; false if the actions must
- * be reassessed for every packet. */
+ enum slow_path_reason slow; /* 0 if fast path may be used. */
bool has_learn; /* Actions include NXAST_LEARN? */
bool has_normal; /* Actions output to OFPP_NORMAL? */
bool has_fin_timeout; /* Actions include NXAST_FIN_TIMEOUT? */
uint16_t sflow_odp_port; /* Output port for composing sFlow action. */
uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */
bool exit; /* No further actions should be processed. */
+ struct flow orig_flow; /* Copy of original flow. */
};
static void action_xlate_ctx_init(struct action_xlate_ctx *,
struct ofproto_dpif *, const struct flow *,
ovs_be16 initial_tci, struct rule_dpif *,
uint8_t tcp_flags, const struct ofpbuf *);
-static struct ofpbuf *xlate_actions(struct action_xlate_ctx *,
- const union ofp_action *in, size_t n_in);
+static void xlate_actions(struct action_xlate_ctx *,
+ const struct ofpact *ofpacts, size_t ofpacts_len,
+ struct ofpbuf *odp_actions);
+static void xlate_actions_for_side_effects(struct action_xlate_ctx *,
+ const struct ofpact *ofpacts,
+ size_t ofpacts_len);
+
+static size_t put_userspace_action(const struct ofproto_dpif *,
+ struct ofpbuf *odp_actions,
+ const struct flow *,
+ const union user_action_cookie *);
+
+static void compose_slow_path(const struct ofproto_dpif *, const struct flow *,
+ enum slow_path_reason,
+ uint64_t *stub, size_t stub_size,
+ const struct nlattr **actionsp,
+ size_t *actions_lenp);
+
+/* A subfacet (see "struct subfacet" below) has three possible installation
+ * states:
+ *
+ * - SF_NOT_INSTALLED: Not installed in the datapath. This will only be the
+ * case just after the subfacet is created, just before the subfacet is
+ * destroyed, or if the datapath returns an error when we try to install a
+ * subfacet.
+ *
+ * - SF_FAST_PATH: The subfacet's actions are installed in the datapath.
+ *
+ * - SF_SLOW_PATH: An action that sends every packet for the subfacet through
+ * ofproto_dpif is installed in the datapath.
+ */
+enum subfacet_path {
+ SF_NOT_INSTALLED, /* No datapath flow for this subfacet. */
+ SF_FAST_PATH, /* Full actions are installed. */
+ SF_SLOW_PATH, /* Send-to-userspace action is installed. */
+};
+
+static const char *subfacet_path_to_string(enum subfacet_path);
+
+/* A dpif flow and actions associated with a facet.
+ *
+ * See also the large comment on struct facet. */
+struct subfacet {
+ /* Owners. */
+ struct hmap_node hmap_node; /* In struct ofproto_dpif 'subfacets' list. */
+ struct list list_node; /* In struct facet's 'facets' list. */
+ struct facet *facet; /* Owning facet. */
+
+ /* Key.
+ *
+ * To save memory in the common case, 'key' is NULL if 'key_fitness' is
+ * ODP_FIT_PERFECT, that is, odp_flow_key_from_flow() can accurately
+ * regenerate the ODP flow key from ->facet->flow. */
+ enum odp_key_fitness key_fitness;
+ struct nlattr *key;
+ int key_len;
+
+ long long int used; /* Time last used; time created if not used. */
+
+ uint64_t dp_packet_count; /* Last known packet count in the datapath. */
+ uint64_t dp_byte_count; /* Last known byte count in the datapath. */
+
+ /* Datapath actions.
+ *
+ * These should be essentially identical for every subfacet in a facet, but
+ * may differ in trivial ways due to VLAN splinters. */
+ size_t actions_len; /* Number of bytes in actions[]. */
+ struct nlattr *actions; /* Datapath actions. */
+
+ enum slow_path_reason slow; /* 0 if fast path may be used. */
+ enum subfacet_path path; /* Installed in datapath? */
+
+ /* This value is normally the same as ->facet->flow.vlan_tci. Only VLAN
+ * splinters can cause it to differ. This value should be removed when
+ * the VLAN splinters feature is no longer needed. */
+ ovs_be16 initial_tci; /* Initial VLAN TCI value. */
+};
+
+static struct subfacet *subfacet_create(struct facet *, enum odp_key_fitness,
+ const struct nlattr *key,
+ size_t key_len, ovs_be16 initial_tci);
+static struct subfacet *subfacet_find(struct ofproto_dpif *,
+ const struct nlattr *key, size_t key_len);
+static void subfacet_destroy(struct subfacet *);
+static void subfacet_destroy__(struct subfacet *);
+static void subfacet_get_key(struct subfacet *, struct odputil_keybuf *,
+ struct ofpbuf *key);
+static void subfacet_reset_dp_stats(struct subfacet *,
+ struct dpif_flow_stats *);
+static void subfacet_update_time(struct subfacet *, long long int used);
+static void subfacet_update_stats(struct subfacet *,
+ const struct dpif_flow_stats *);
+static void subfacet_make_actions(struct subfacet *,
+ const struct ofpbuf *packet,
+ struct ofpbuf *odp_actions);
+static int subfacet_install(struct subfacet *,
+ const struct nlattr *actions, size_t actions_len,
+ struct dpif_flow_stats *, enum slow_path_reason);
+static void subfacet_uninstall(struct subfacet *);
+
+static enum subfacet_path subfacet_want_path(enum slow_path_reason);
/* An exact-match instantiation of an OpenFlow flow.
*
* between splintered and non-splintered subfacets due to the VLAN tag
* being initially different (present vs. absent). All of them have these
* properties in common so we just store one copy of them here. */
- bool may_install; /* Reassess actions for every packet? */
bool has_learn; /* Actions include NXAST_LEARN? */
bool has_normal; /* Actions output to OFPP_NORMAL? */
bool has_fin_timeout; /* Actions include NXAST_FIN_TIMEOUT? */
tag_type tags; /* Tags that would require revalidation. */
mirror_mask_t mirrors; /* Bitmap of dependent mirrors. */
+
+ /* Storage for a single subfacet, to reduce malloc() time and space
+ * overhead. (A facet always has at least one subfacet and in the common
+ * case has exactly one subfacet.) */
+ struct subfacet one_subfacet;
};
-static struct facet *facet_create(struct rule_dpif *, const struct flow *);
+static struct facet *facet_create(struct rule_dpif *,
+ const struct flow *, uint32_t hash);
static void facet_remove(struct facet *);
static void facet_free(struct facet *);
-static struct facet *facet_find(struct ofproto_dpif *, const struct flow *);
+static struct facet *facet_find(struct ofproto_dpif *,
+ const struct flow *, uint32_t hash);
static struct facet *facet_lookup_valid(struct ofproto_dpif *,
- const struct flow *);
-static bool facet_revalidate(struct facet *);
+ const struct flow *, uint32_t hash);
+static void facet_revalidate(struct facet *);
static bool facet_check_consistency(struct facet *);
static void facet_flush_stats(struct facet *);
static void facet_update_time(struct facet *, long long int used);
static void facet_reset_counters(struct facet *);
static void facet_push_stats(struct facet *);
-static void facet_account(struct facet *, bool may_flow_mod);
+static void facet_learn(struct facet *);
+static void facet_account(struct facet *);
static bool facet_is_controller_flow(struct facet *);
-/* A dpif flow and actions associated with a facet.
- *
- * See also the large comment on struct facet. */
-struct subfacet {
- /* Owners. */
- struct hmap_node hmap_node; /* In struct ofproto_dpif 'subfacets' list. */
- struct list list_node; /* In struct facet's 'facets' list. */
- struct facet *facet; /* Owning facet. */
-
- /* Key.
- *
- * To save memory in the common case, 'key' is NULL if 'key_fitness' is
- * ODP_FIT_PERFECT, that is, odp_flow_key_from_flow() can accurately
- * regenerate the ODP flow key from ->facet->flow. */
- enum odp_key_fitness key_fitness;
- struct nlattr *key;
- int key_len;
-
- long long int used; /* Time last used; time created if not used. */
-
- uint64_t dp_packet_count; /* Last known packet count in the datapath. */
- uint64_t dp_byte_count; /* Last known byte count in the datapath. */
-
- /* Datapath actions.
- *
- * These should be essentially identical for every subfacet in a facet, but
- * may differ in trivial ways due to VLAN splinters. */
- size_t actions_len; /* Number of bytes in actions[]. */
- struct nlattr *actions; /* Datapath actions. */
-
- bool installed; /* Installed in datapath? */
-
- /* This value is normally the same as ->facet->flow.vlan_tci. Only VLAN
- * splinters can cause it to differ. This value should be removed when
- * the VLAN splinters feature is no longer needed. */
- ovs_be16 initial_tci; /* Initial VLAN TCI value. */
-};
-
-static struct subfacet *subfacet_create(struct facet *, enum odp_key_fitness,
- const struct nlattr *key,
- size_t key_len, ovs_be16 initial_tci);
-static struct subfacet *subfacet_find(struct ofproto_dpif *,
- const struct nlattr *key, size_t key_len);
-static void subfacet_destroy(struct subfacet *);
-static void subfacet_destroy__(struct subfacet *);
-static void subfacet_get_key(struct subfacet *, struct odputil_keybuf *,
- struct ofpbuf *key);
-static void subfacet_reset_dp_stats(struct subfacet *,
- struct dpif_flow_stats *);
-static void subfacet_update_time(struct subfacet *, long long int used);
-static void subfacet_update_stats(struct subfacet *,
- const struct dpif_flow_stats *);
-static void subfacet_make_actions(struct subfacet *,
- const struct ofpbuf *packet);
-static int subfacet_install(struct subfacet *,
- const struct nlattr *actions, size_t actions_len,
- struct dpif_flow_stats *);
-static void subfacet_uninstall(struct subfacet *);
-
struct ofport_dpif {
struct ofport up;
static uint32_t vsp_realdev_to_vlandev(const struct ofproto_dpif *,
uint32_t realdev, ovs_be16 vlan_tci);
-static uint16_t vsp_vlandev_to_realdev(const struct ofproto_dpif *,
- uint16_t vlandev, int *vid);
+static bool vsp_adjust_flow(const struct ofproto_dpif *, struct flow *);
static void vsp_remove(struct ofport_dpif *);
static void vsp_add(struct ofport_dpif *, uint16_t realdev_ofp_port, int vid);
}
static void port_run(struct ofport_dpif *);
+static void port_run_fast(struct ofport_dpif *);
static void port_wait(struct ofport_dpif *);
static int set_cfm(struct ofport *, const struct cfm_settings *);
static void ofport_clear_priorities(struct ofport_dpif *);
uint32_t basis; /* Keeps each table's tags separate. */
};
+/* Reasons that we might need to revalidate every facet, and corresponding
+ * coverage counters.
+ *
+ * A value of 0 means that there is no need to revalidate.
+ *
+ * It would be nice to have some cleaner way to integrate with coverage
+ * counters, but with only a few reasons I guess this is good enough for
+ * now. */
+enum revalidate_reason {
+ REV_RECONFIGURE = 1, /* Switch configuration changed. */
+ REV_STP, /* Spanning tree protocol port status change. */
+ REV_PORT_TOGGLED, /* Port enabled or disabled by CFM, LACP, ...*/
+ REV_FLOW_TABLE, /* Flow table changed. */
+ REV_INCONSISTENCY /* Facet self-check failed. */
+};
+COVERAGE_DEFINE(rev_reconfigure);
+COVERAGE_DEFINE(rev_stp);
+COVERAGE_DEFINE(rev_port_toggled);
+COVERAGE_DEFINE(rev_flow_table);
+COVERAGE_DEFINE(rev_inconsistency);
+
struct ofproto_dpif {
struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
struct ofproto up;
struct dpif *dpif;
int max_ports;
+ /* Special OpenFlow rules. */
+ struct rule_dpif *miss_rule; /* Sends flow table misses to controller. */
+ struct rule_dpif *no_packet_in_rule; /* Drops flow table misses. */
+
/* Statistics. */
uint64_t n_matches;
struct hmap bundles; /* Contains "struct ofbundle"s. */
struct mac_learning *ml;
struct ofmirror *mirrors[MAX_MIRRORS];
+ bool has_mirrors;
bool has_bonded_bundles;
/* Expiration. */
/* Facets. */
struct hmap facets;
struct hmap subfacets;
+ struct governor *governor;
/* Revalidation. */
struct table_dpif tables[N_TABLES];
- bool need_revalidate;
+ enum revalidate_reason need_revalidate;
struct tag_set revalidate_set;
/* Support for debugging async flow mods. */
return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
}
-static struct ofport_dpif *get_ofp_port(struct ofproto_dpif *,
+static struct ofport_dpif *get_ofp_port(const struct ofproto_dpif *,
uint16_t ofp_port);
-static struct ofport_dpif *get_odp_port(struct ofproto_dpif *,
+static struct ofport_dpif *get_odp_port(const struct ofproto_dpif *,
uint32_t odp_port);
static void ofproto_trace(struct ofproto_dpif *, const struct flow *,
const struct ofpbuf *, ovs_be16 initial_tci,
/* Utilities. */
static int send_packet(const struct ofport_dpif *, struct ofpbuf *packet);
-static size_t
-compose_sflow_action(const struct ofproto_dpif *, struct ofpbuf *odp_actions,
- const struct flow *, uint32_t odp_port);
+static size_t compose_sflow_action(const struct ofproto_dpif *,
+ struct ofpbuf *odp_actions,
+ const struct flow *, uint32_t odp_port);
static void add_mirror_actions(struct action_xlate_ctx *ctx,
const struct flow *flow);
/* Global variables. */
\f
/* Basic life-cycle. */
+static int add_internal_flows(struct ofproto_dpif *);
+
static struct ofproto *
alloc(void)
{
hmap_init(&ofproto->facets);
hmap_init(&ofproto->subfacets);
+ ofproto->governor = NULL;
for (i = 0; i < N_TABLES; i++) {
struct table_dpif *table = &ofproto->tables[i];
table->other_table = NULL;
table->basis = random_uint32();
}
- ofproto->need_revalidate = false;
+ ofproto->need_revalidate = 0;
tag_set_init(&ofproto->revalidate_set);
list_init(&ofproto->completions);
ofproto_dpif_unixctl_init();
+ ofproto->has_mirrors = false;
ofproto->has_bundle_action = false;
hmap_init(&ofproto->vlandev_map);
memset(&ofproto->stats, 0, sizeof ofproto->stats);
ofproto_init_tables(ofproto_, N_TABLES);
+ error = add_internal_flows(ofproto);
+ ofproto->up.tables[TBL_INTERNAL].flags = OFTABLE_HIDDEN | OFTABLE_READONLY;
+
+ return error;
+}
+
+static int
+add_internal_flow(struct ofproto_dpif *ofproto, int id,
+ const struct ofpbuf *ofpacts, struct rule_dpif **rulep)
+{
+ struct ofputil_flow_mod fm;
+ int error;
+
+ cls_rule_init_catchall(&fm.cr, 0);
+ cls_rule_set_reg(&fm.cr, 0, id);
+ fm.new_cookie = htonll(0);
+ fm.cookie = htonll(0);
+ fm.cookie_mask = htonll(0);
+ fm.table_id = TBL_INTERNAL;
+ fm.command = OFPFC_ADD;
+ fm.idle_timeout = 0;
+ fm.hard_timeout = 0;
+ fm.buffer_id = 0;
+ fm.out_port = 0;
+ fm.flags = 0;
+ fm.ofpacts = ofpacts->data;
+ fm.ofpacts_len = ofpacts->size;
+
+ error = ofproto_flow_mod(&ofproto->up, &fm);
+ if (error) {
+ VLOG_ERR_RL(&rl, "failed to add internal flow %d (%s)",
+ id, ofperr_to_string(error));
+ return error;
+ }
+
+ *rulep = rule_dpif_lookup__(ofproto, &fm.cr.flow, TBL_INTERNAL);
+ assert(*rulep != NULL);
return 0;
}
+static int
+add_internal_flows(struct ofproto_dpif *ofproto)
+{
+ struct ofpact_controller *controller;
+ uint64_t ofpacts_stub[128 / 8];
+ struct ofpbuf ofpacts;
+ int error;
+ int id;
+
+ ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
+ id = 1;
+
+ controller = ofpact_put_CONTROLLER(&ofpacts);
+ controller->max_len = UINT16_MAX;
+ controller->controller_id = 0;
+ controller->reason = OFPR_NO_MATCH;
+ ofpact_pad(&ofpacts);
+
+ error = add_internal_flow(ofproto, id++, &ofpacts, &ofproto->miss_rule);
+ if (error) {
+ return error;
+ }
+
+ ofpbuf_clear(&ofpacts);
+ error = add_internal_flow(ofproto, id++, &ofpacts,
+ &ofproto->no_packet_in_rule);
+ return error;
+}
+
static void
complete_operations(struct ofproto_dpif *ofproto)
{
hmap_destroy(&ofproto->facets);
hmap_destroy(&ofproto->subfacets);
+ governor_destroy(ofproto->governor);
hmap_destroy(&ofproto->vlandev_map);
hmap_destroy(&ofproto->realdev_vid_map);
run_fast(struct ofproto *ofproto_)
{
struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+ struct ofport_dpif *ofport;
unsigned int work;
+ HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
+ port_run_fast(ofport);
+ }
+
/* Handle one or more batches of upcalls, until there's nothing left to do
* or until we do a fixed total amount of work.
*
|| !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;
+ struct facet *facet;
+
+ switch (ofproto->need_revalidate) {
+ case REV_RECONFIGURE: COVERAGE_INC(rev_reconfigure); break;
+ case REV_STP: COVERAGE_INC(rev_stp); break;
+ case REV_PORT_TOGGLED: COVERAGE_INC(rev_port_toggled); break;
+ case REV_FLOW_TABLE: COVERAGE_INC(rev_flow_table); break;
+ case REV_INCONSISTENCY: COVERAGE_INC(rev_inconsistency); break;
+ }
/* Clear the revalidation flags. */
tag_set_init(&ofproto->revalidate_set);
- ofproto->need_revalidate = false;
+ ofproto->need_revalidate = 0;
- HMAP_FOR_EACH_SAFE (facet, next, hmap_node, &ofproto->facets) {
+ HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
if (revalidate_all
|| tag_set_intersects(&revalidate_set, facet->tags)) {
facet_revalidate(facet);
struct facet, hmap_node);
if (!tag_set_intersects(&ofproto->revalidate_set, facet->tags)) {
if (!facet_check_consistency(facet)) {
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_INCONSISTENCY;
}
}
}
+ if (ofproto->governor) {
+ size_t n_subfacets;
+
+ governor_run(ofproto->governor);
+
+ /* If the governor has shrunk to its minimum size and the number of
+ * subfacets has dwindled, then drop the governor entirely.
+ *
+ * For hysteresis, the number of subfacets to drop the governor is
+ * smaller than the number needed to trigger its creation. */
+ n_subfacets = hmap_count(&ofproto->subfacets);
+ if (n_subfacets * 4 < ofproto->up.flow_eviction_threshold
+ && governor_is_idle(ofproto->governor)) {
+ governor_destroy(ofproto->governor);
+ ofproto->governor = NULL;
+ }
+ }
+
return 0;
}
} else {
timer_wait(&ofproto->next_expiration);
}
+ if (ofproto->governor) {
+ governor_wait(ofproto->governor);
+ }
+}
+
+static void
+get_memory_usage(const struct ofproto *ofproto_, struct simap *usage)
+{
+ const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
+
+ simap_increase(usage, "facets", hmap_count(&ofproto->facets));
+ simap_increase(usage, "subfacets", hmap_count(&ofproto->subfacets));
}
static void
struct subfacet *subfacet;
LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
- subfacet->installed = false;
+ subfacet->path = SF_NOT_INSTALLED;
subfacet->dp_packet_count = 0;
subfacet->dp_byte_count = 0;
}
struct ofport_dpif *port = ofport_dpif_cast(port_);
struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
port->odp_port = ofp_port_to_odp_port(port->up.ofp_port);
port->bundle = NULL;
port->cfm = NULL;
struct ofport_dpif *port = ofport_dpif_cast(port_);
struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
bundle_remove(port_);
set_cfm(port_, NULL);
if (ofproto->sflow) {
enum ofputil_port_config changed = old_config ^ port->up.pp.config;
if (changed & (OFPUTIL_PC_NO_RECV | OFPUTIL_PC_NO_RECV_STP |
- OFPUTIL_PC_NO_FWD | OFPUTIL_PC_NO_FLOOD)) {
- ofproto->need_revalidate = true;
+ OFPUTIL_PC_NO_FWD | OFPUTIL_PC_NO_FLOOD |
+ OFPUTIL_PC_NO_PACKET_IN)) {
+ ofproto->need_revalidate = REV_RECONFIGURE;
if (changed & OFPUTIL_PC_NO_FLOOD && port->bundle) {
bundle_update(port->bundle);
HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
dpif_sflow_add_port(ds, &ofport->up);
}
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
}
dpif_sflow_set_options(ds, sflow_options);
} else {
if (ds) {
dpif_sflow_destroy(ds);
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
ofproto->sflow = NULL;
}
}
struct ofproto_dpif *ofproto;
ofproto = ofproto_dpif_cast(ofport->up.ofproto);
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
ofport->cfm = cfm_create(netdev_get_name(ofport->up.netdev));
}
return -1;
}
}
+
+static int
+get_cfm_health(const struct ofport *ofport_)
+{
+ struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
+
+ return ofport->cfm ? cfm_get_health(ofport->cfm) : -1;
+}
\f
/* Spanning Tree. */
/* Only revalidate flows if the configuration changed. */
if (!s != !ofproto->stp) {
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
}
if (s) {
fwd_change = stp_forward_in_state(ofport->stp_state)
!= stp_forward_in_state(state);
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_STP;
ofport->stp_state = state;
ofport->stp_state_entered = time_msec();
pdscp = xmalloc(sizeof *pdscp);
pdscp->priority = priority;
pdscp->dscp = dscp;
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
}
if (pdscp->dscp != dscp) {
pdscp->dscp = dscp;
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
}
hmap_insert(&new, &pdscp->hmap_node, hash_int(pdscp->priority, 0));
if (!hmap_is_empty(&ofport->priorities)) {
ofport_clear_priorities(ofport);
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
}
hmap_swap(&new, &ofport->priorities);
struct mac_learning *ml = ofproto->ml;
struct mac_entry *mac, *next_mac;
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
if (mac->port.p == bundle) {
if (all_ofprotos) {
{
struct ofbundle *bundle = port->bundle;
- bundle->ofproto->need_revalidate = true;
+ bundle->ofproto->need_revalidate = REV_RECONFIGURE;
list_remove(&port->bundle_node);
port->bundle = NULL;
}
if (port->bundle != bundle) {
- bundle->ofproto->need_revalidate = true;
+ bundle->ofproto->need_revalidate = REV_RECONFIGURE;
if (port->bundle) {
bundle_del_port(port);
}
}
}
if (lacp) {
- port->bundle->ofproto->need_revalidate = true;
+ port->bundle->ofproto->need_revalidate = REV_RECONFIGURE;
lacp_slave_register(bundle->lacp, port, lacp);
}
mirror_destroy(m);
} else if (hmapx_find_and_delete(&m->srcs, bundle)
|| hmapx_find_and_delete(&m->dsts, bundle)) {
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
}
}
}
/* LACP. */
if (s->lacp) {
if (!bundle->lacp) {
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
bundle->lacp = lacp_create();
}
lacp_configure(bundle->lacp, s->lacp);
bundle->ofproto->has_bonded_bundles = true;
if (bundle->bond) {
if (bond_reconfigure(bundle->bond, s->bond)) {
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
}
} else {
bundle->bond = bond_create(s->bond);
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
}
LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
}
}
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
+ ofproto->has_mirrors = true;
mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
mirror_update_dups(ofproto);
struct ofproto_dpif *ofproto;
mirror_mask_t mirror_bit;
struct ofbundle *bundle;
+ int i;
if (!mirror) {
return;
}
ofproto = mirror->ofproto;
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
free(mirror);
mirror_update_dups(ofproto);
+
+ ofproto->has_mirrors = false;
+ for (i = 0; i < MAX_MIRRORS; i++) {
+ if (ofproto->mirrors[i]) {
+ ofproto->has_mirrors = true;
+ break;
+ }
+ }
}
static int
forward_bpdu_changed(struct ofproto *ofproto_)
{
struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
- /* Revalidate cached flows whenever forward_bpdu option changes. */
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
}
static void
/* Ports. */
static struct ofport_dpif *
-get_ofp_port(struct ofproto_dpif *ofproto, uint16_t ofp_port)
+get_ofp_port(const 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)
+get_odp_port(const struct ofproto_dpif *ofproto, uint32_t odp_port)
{
return get_ofp_port(ofproto, odp_port_to_ofp_port(odp_port));
}
ofproto_port->ofp_port = odp_port_to_ofp_port(dpif_port->port_no);
}
+static void
+port_run_fast(struct ofport_dpif *ofport)
+{
+ if (ofport->cfm && cfm_should_send_ccm(ofport->cfm)) {
+ struct ofpbuf packet;
+
+ ofpbuf_init(&packet, 0);
+ cfm_compose_ccm(ofport->cfm, &packet, ofport->up.pp.hw_addr);
+ send_packet(ofport, &packet);
+ ofpbuf_uninit(&packet);
+ }
+}
+
static void
port_run(struct ofport_dpif *ofport)
{
ofport->carrier_seq = carrier_seq;
+ port_run_fast(ofport);
if (ofport->cfm) {
cfm_run(ofport->cfm);
-
- if (cfm_should_send_ccm(ofport->cfm)) {
- struct ofpbuf packet;
-
- ofpbuf_init(&packet, 0);
- cfm_compose_ccm(ofport->cfm, &packet, ofport->up.pp.hw_addr);
- send_packet(ofport, &packet);
- ofpbuf_uninit(&packet);
- }
-
enable = enable && !cfm_get_fault(ofport->cfm)
&& cfm_get_opup(ofport->cfm);
}
struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
if (ofproto->has_bundle_action) {
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_PORT_TOGGLED;
}
}
size_t key_len;
ovs_be16 initial_tci;
struct list packets;
+ enum dpif_upcall_type upcall_type;
};
struct flow_miss_op {
struct dpif_op dpif_op;
- struct subfacet *subfacet;
+ struct subfacet *subfacet; /* Subfacet */
+ void *garbage; /* Pointer to pass to free(), NULL if none. */
+ uint64_t stub[1024 / 8]; /* Temporary buffer. */
};
/* Sends an OFPT_PACKET_IN message for 'packet' of type OFPR_NO_MATCH to each
connmgr_send_packet_in(ofproto->up.connmgr, &pin);
}
-static bool
+static enum slow_path_reason
process_special(struct ofproto_dpif *ofproto, const struct flow *flow,
const struct ofpbuf *packet)
{
struct ofport_dpif *ofport = get_ofp_port(ofproto, flow->in_port);
if (!ofport) {
- return false;
+ return 0;
}
if (ofport->cfm && cfm_should_process_flow(ofport->cfm, flow)) {
if (packet) {
cfm_process_heartbeat(ofport->cfm, packet);
}
- return true;
+ return SLOW_CFM;
} else if (ofport->bundle && ofport->bundle->lacp
&& flow->dl_type == htons(ETH_TYPE_LACP)) {
if (packet) {
lacp_process_packet(ofport->bundle->lacp, ofport, packet);
}
- return true;
+ return SLOW_LACP;
} else if (ofproto->stp && stp_should_process_flow(flow)) {
if (packet) {
stp_process_packet(ofport, packet);
}
- return true;
+ return SLOW_STP;
}
- return false;
+ return 0;
}
static struct flow_miss *
-flow_miss_create(struct hmap *todo, const struct flow *flow,
- enum odp_key_fitness key_fitness,
- const struct nlattr *key, size_t key_len,
- ovs_be16 initial_tci)
+flow_miss_find(struct hmap *todo, const struct flow *flow, uint32_t hash)
{
- uint32_t hash = flow_hash(flow, 0);
struct flow_miss *miss;
HMAP_FOR_EACH_WITH_HASH (miss, hmap_node, hash, todo) {
}
}
- miss = xmalloc(sizeof *miss);
- hmap_insert(todo, &miss->hmap_node, hash);
- miss->flow = *flow;
- miss->key_fitness = key_fitness;
- miss->key = key;
- miss->key_len = key_len;
- miss->initial_tci = initial_tci;
- list_init(&miss->packets);
- return miss;
+ return NULL;
}
+/* Partially Initializes 'op' as an "execute" operation for 'miss' and
+ * 'packet'. The caller must initialize op->actions and op->actions_len. If
+ * 'miss' is associated with a subfacet the caller must also initialize the
+ * returned op->subfacet, and if anything needs to be freed after processing
+ * the op, the caller must initialize op->garbage also. */
static void
-handle_flow_miss(struct ofproto_dpif *ofproto, struct flow_miss *miss,
- struct flow_miss_op *ops, size_t *n_ops)
-{
- const struct flow *flow = &miss->flow;
- struct ofpbuf *packet, *next_packet;
- struct subfacet *subfacet;
- struct facet *facet;
+init_flow_miss_execute_op(struct flow_miss *miss, struct ofpbuf *packet,
+ struct flow_miss_op *op)
+{
+ if (miss->flow.vlan_tci != miss->initial_tci) {
+ /* This packet was received on a VLAN splinter port. We
+ * added a VLAN to the packet to make the packet resemble
+ * the flow, but the actions were composed assuming that
+ * the packet contained no VLAN. So, we must remove the
+ * VLAN header from the packet before trying to execute the
+ * actions. */
+ eth_pop_vlan(packet);
+ }
- facet = facet_lookup_valid(ofproto, flow);
- if (!facet) {
- struct rule_dpif *rule;
+ op->subfacet = NULL;
+ op->garbage = NULL;
+ op->dpif_op.type = DPIF_OP_EXECUTE;
+ op->dpif_op.u.execute.key = miss->key;
+ op->dpif_op.u.execute.key_len = miss->key_len;
+ op->dpif_op.u.execute.packet = packet;
+}
- rule = rule_dpif_lookup(ofproto, flow, 0);
- if (!rule) {
- /* Don't send a packet-in if OFPUTIL_PC_NO_PACKET_IN asserted. */
- struct ofport_dpif *port = get_ofp_port(ofproto, flow->in_port);
- if (port) {
- if (port->up.pp.config & OFPUTIL_PC_NO_PACKET_IN) {
- COVERAGE_INC(ofproto_dpif_no_packet_in);
- /* XXX install 'drop' flow entry */
- return;
- }
- } else {
- VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16,
- flow->in_port);
- }
+/* Helper for handle_flow_miss_without_facet() and
+ * handle_flow_miss_with_facet(). */
+static void
+handle_flow_miss_common(struct rule_dpif *rule,
+ struct ofpbuf *packet, const struct flow *flow)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
- LIST_FOR_EACH (packet, list_node, &miss->packets) {
- send_packet_in_miss(ofproto, packet, flow);
- }
+ ofproto->n_matches++;
+
+ if (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_miss(ofproto, packet, flow);
+ }
+}
+
+/* Figures out whether a flow that missed in 'ofproto', whose details are in
+ * 'miss', is likely to be worth tracking in detail in userspace and (usually)
+ * installing a datapath flow. The answer is usually "yes" (a return value of
+ * true). However, for short flows the cost of bookkeeping is much higher than
+ * the benefits, so when the datapath holds a large number of flows we impose
+ * some heuristics to decide which flows are likely to be worth tracking. */
+static bool
+flow_miss_should_make_facet(struct ofproto_dpif *ofproto,
+ struct flow_miss *miss, uint32_t hash)
+{
+ if (!ofproto->governor) {
+ size_t n_subfacets;
- return;
+ n_subfacets = hmap_count(&ofproto->subfacets);
+ if (n_subfacets * 2 <= ofproto->up.flow_eviction_threshold) {
+ return true;
}
- facet = facet_create(rule, flow);
+ ofproto->governor = governor_create(ofproto->up.name);
}
+ return governor_should_install_flow(ofproto->governor, hash,
+ list_size(&miss->packets));
+}
+
+/* Handles 'miss', which matches 'rule', without creating a facet or subfacet
+ * or creating any datapath flow. May add an "execute" operation to 'ops' and
+ * increment '*n_ops'. */
+static void
+handle_flow_miss_without_facet(struct flow_miss *miss,
+ struct rule_dpif *rule,
+ struct flow_miss_op *ops, size_t *n_ops)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
+ struct action_xlate_ctx ctx;
+ struct ofpbuf *packet;
+
+ LIST_FOR_EACH (packet, list_node, &miss->packets) {
+ struct flow_miss_op *op = &ops[*n_ops];
+ struct dpif_flow_stats stats;
+ struct ofpbuf odp_actions;
+
+ COVERAGE_INC(facet_suppress);
+
+ ofpbuf_use_stub(&odp_actions, op->stub, sizeof op->stub);
+
+ dpif_flow_stats_extract(&miss->flow, packet, &stats);
+ rule_credit_stats(rule, &stats);
+
+ action_xlate_ctx_init(&ctx, ofproto, &miss->flow, miss->initial_tci,
+ rule, 0, packet);
+ ctx.resubmit_stats = &stats;
+ xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len,
+ &odp_actions);
+
+ if (odp_actions.size) {
+ struct dpif_execute *execute = &op->dpif_op.u.execute;
+
+ init_flow_miss_execute_op(miss, packet, op);
+ execute->actions = odp_actions.data;
+ execute->actions_len = odp_actions.size;
+ op->garbage = ofpbuf_get_uninit_pointer(&odp_actions);
+
+ (*n_ops)++;
+ } else {
+ ofpbuf_uninit(&odp_actions);
+ }
+ }
+}
+
+/* Handles 'miss', which matches 'facet'. May add any required datapath
+ * operations to 'ops', incrementing '*n_ops' for each new op. */
+static void
+handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet,
+ struct flow_miss_op *ops, size_t *n_ops)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
+ enum subfacet_path want_path;
+ struct subfacet *subfacet;
+ struct ofpbuf *packet;
+
subfacet = subfacet_create(facet,
miss->key_fitness, miss->key, miss->key_len,
miss->initial_tci);
- LIST_FOR_EACH_SAFE (packet, next_packet, list_node, &miss->packets) {
+ LIST_FOR_EACH (packet, list_node, &miss->packets) {
+ struct flow_miss_op *op = &ops[*n_ops];
struct dpif_flow_stats stats;
- struct flow_miss_op *op;
- struct dpif_execute *execute;
-
- ofproto->n_matches++;
+ struct ofpbuf odp_actions;
- 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_miss(ofproto, packet, flow);
- }
+ handle_flow_miss_common(facet->rule, packet, &miss->flow);
- if (!facet->may_install || !subfacet->actions) {
- subfacet_make_actions(subfacet, packet);
+ ofpbuf_use_stub(&odp_actions, op->stub, sizeof op->stub);
+ if (!subfacet->actions || subfacet->slow) {
+ subfacet_make_actions(subfacet, packet, &odp_actions);
}
dpif_flow_stats_extract(&facet->flow, packet, &stats);
subfacet_update_stats(subfacet, &stats);
- if (!subfacet->actions_len) {
- /* No actions to execute, so skip talking to the dpif. */
- continue;
- }
+ if (subfacet->actions_len) {
+ struct dpif_execute *execute = &op->dpif_op.u.execute;
+
+ init_flow_miss_execute_op(miss, packet, op);
+ op->subfacet = subfacet;
+ if (!subfacet->slow) {
+ execute->actions = subfacet->actions;
+ execute->actions_len = subfacet->actions_len;
+ ofpbuf_uninit(&odp_actions);
+ } else {
+ execute->actions = odp_actions.data;
+ execute->actions_len = odp_actions.size;
+ op->garbage = ofpbuf_get_uninit_pointer(&odp_actions);
+ }
- if (flow->vlan_tci != subfacet->initial_tci) {
- /* This packet was received on a VLAN splinter port. We added
- * a VLAN to the packet to make the packet resemble the flow,
- * but the actions were composed assuming that the packet
- * contained no VLAN. So, we must remove the VLAN header from
- * the packet before trying to execute the actions. */
- eth_pop_vlan(packet);
+ (*n_ops)++;
+ } else {
+ ofpbuf_uninit(&odp_actions);
}
+ }
- op = &ops[(*n_ops)++];
- execute = &op->dpif_op.u.execute;
- op->subfacet = subfacet;
- op->dpif_op.type = DPIF_OP_EXECUTE;
- execute->key = miss->key;
- execute->key_len = miss->key_len;
- execute->actions = (facet->may_install
- ? subfacet->actions
- : xmemdup(subfacet->actions,
- subfacet->actions_len));
- execute->actions_len = subfacet->actions_len;
- execute->packet = packet;
- }
-
- if (facet->may_install && subfacet->key_fitness != ODP_FIT_TOO_LITTLE) {
+ want_path = subfacet_want_path(subfacet->slow);
+ if (miss->upcall_type == DPIF_UC_MISS || subfacet->path != want_path) {
struct flow_miss_op *op = &ops[(*n_ops)++];
struct dpif_flow_put *put = &op->dpif_op.u.flow_put;
op->subfacet = subfacet;
+ op->garbage = NULL;
op->dpif_op.type = DPIF_OP_FLOW_PUT;
put->flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
put->key = miss->key;
put->key_len = miss->key_len;
- put->actions = subfacet->actions;
- put->actions_len = subfacet->actions_len;
+ if (want_path == SF_FAST_PATH) {
+ put->actions = subfacet->actions;
+ put->actions_len = subfacet->actions_len;
+ } else {
+ compose_slow_path(ofproto, &facet->flow, subfacet->slow,
+ op->stub, sizeof op->stub,
+ &put->actions, &put->actions_len);
+ }
put->stats = NULL;
}
}
+/* Handles flow miss 'miss' on 'ofproto'. May add any required datapath
+ * operations to 'ops', incrementing '*n_ops' for each new op. */
+static void
+handle_flow_miss(struct ofproto_dpif *ofproto, struct flow_miss *miss,
+ struct flow_miss_op *ops, size_t *n_ops)
+{
+ struct facet *facet;
+ uint32_t hash;
+
+ /* The caller must ensure that miss->hmap_node.hash contains
+ * flow_hash(miss->flow, 0). */
+ hash = miss->hmap_node.hash;
+
+ facet = facet_lookup_valid(ofproto, &miss->flow, hash);
+ if (!facet) {
+ struct rule_dpif *rule = rule_dpif_lookup(ofproto, &miss->flow);
+
+ if (!flow_miss_should_make_facet(ofproto, miss, hash)) {
+ handle_flow_miss_without_facet(miss, rule, ops, n_ops);
+ return;
+ }
+
+ facet = facet_create(rule, &miss->flow, hash);
+ }
+ handle_flow_miss_with_facet(miss, facet, ops, n_ops);
+}
+
/* Like odp_flow_key_to_flow(), this function converts the 'key_len' bytes of
* OVS_KEY_ATTR_* attributes in 'key' to a flow structure in 'flow' and returns
* an ODP_FIT_* value that indicates how well 'key' fits our expectations for
struct ofpbuf *packet)
{
enum odp_key_fitness fitness;
- uint16_t realdev;
- int vid;
fitness = odp_flow_key_to_flow(key, key_len, flow);
if (fitness == ODP_FIT_ERROR) {
}
*initial_tci = flow->vlan_tci;
- realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port, &vid);
- if (realdev) {
- /* Cause the flow to be processed as if it came in on the real device
- * with the VLAN device's VLAN ID. */
- flow->in_port = realdev;
- flow->vlan_tci = htons((vid & VLAN_VID_MASK) | VLAN_CFI);
+ if (vsp_adjust_flow(ofproto, flow)) {
if (packet) {
/* Make the packet resemble the flow, so that it gets sent to an
* OpenFlow controller properly, so that it looks correct for
size_t n_upcalls)
{
struct dpif_upcall *upcall;
- struct flow_miss *miss, *next_miss;
+ struct flow_miss *miss;
+ struct flow_miss misses[FLOW_MISS_MAX_BATCH];
struct flow_miss_op flow_miss_ops[FLOW_MISS_MAX_BATCH * 2];
struct dpif_op *dpif_ops[FLOW_MISS_MAX_BATCH * 2];
struct hmap todo;
+ int n_misses;
size_t n_ops;
size_t i;
* the packets that have the same flow in the same "flow_miss" structure so
* that we can process them together. */
hmap_init(&todo);
+ n_misses = 0;
for (upcall = upcalls; upcall < &upcalls[n_upcalls]; upcall++) {
- enum odp_key_fitness fitness;
- struct flow_miss *miss;
- ovs_be16 initial_tci;
- struct flow flow;
+ struct flow_miss *miss = &misses[n_misses];
+ struct flow_miss *existing_miss;
+ uint32_t hash;
/* Obtain metadata and check userspace/kernel agreement on flow match,
* then set 'flow''s header pointers. */
- fitness = ofproto_dpif_extract_flow_key(ofproto,
- upcall->key, upcall->key_len,
- &flow, &initial_tci,
- upcall->packet);
- if (fitness == ODP_FIT_ERROR) {
- ofpbuf_delete(upcall->packet);
- continue;
- }
- flow_extract(upcall->packet, flow.skb_priority, flow.tun_id,
- flow.in_port, &flow);
-
- /* Handle 802.1ag, LACP, and STP specially. */
- if (process_special(ofproto, &flow, upcall->packet)) {
- ofproto_update_local_port_stats(&ofproto->up,
- 0, upcall->packet->size);
- ofpbuf_delete(upcall->packet);
- ofproto->n_matches++;
+ miss->key_fitness = ofproto_dpif_extract_flow_key(
+ ofproto, upcall->key, upcall->key_len,
+ &miss->flow, &miss->initial_tci, upcall->packet);
+ if (miss->key_fitness == ODP_FIT_ERROR) {
continue;
}
+ flow_extract(upcall->packet, miss->flow.skb_priority,
+ miss->flow.tun_id, miss->flow.in_port, &miss->flow);
/* Add other packets to a to-do list. */
- miss = flow_miss_create(&todo, &flow, fitness,
- upcall->key, upcall->key_len, initial_tci);
+ hash = flow_hash(&miss->flow, 0);
+ existing_miss = flow_miss_find(&todo, &miss->flow, hash);
+ if (!existing_miss) {
+ hmap_insert(&todo, &miss->hmap_node, hash);
+ miss->key = upcall->key;
+ miss->key_len = upcall->key_len;
+ miss->upcall_type = upcall->type;
+ list_init(&miss->packets);
+
+ n_misses++;
+ } else {
+ miss = existing_miss;
+ }
list_push_back(&miss->packets, &upcall->packet->list_node);
}
/* Free memory and update facets. */
for (i = 0; i < n_ops; i++) {
struct flow_miss_op *op = &flow_miss_ops[i];
- struct dpif_execute *execute;
switch (op->dpif_op.type) {
case DPIF_OP_EXECUTE:
- execute = &op->dpif_op.u.execute;
- if (op->subfacet->actions != execute->actions) {
- free((struct nlattr *) execute->actions);
- }
break;
case DPIF_OP_FLOW_PUT:
if (!op->dpif_op.error) {
- op->subfacet->installed = true;
+ op->subfacet->path = subfacet_want_path(op->subfacet->slow);
}
break;
+
+ case DPIF_OP_FLOW_DEL:
+ NOT_REACHED();
}
- }
- HMAP_FOR_EACH_SAFE (miss, next_miss, hmap_node, &todo) {
- ofpbuf_list_delete(&miss->packets);
- hmap_remove(&todo, &miss->hmap_node);
- free(miss);
+
+ free(op->garbage);
}
hmap_destroy(&todo);
}
+static enum { SFLOW_UPCALL, MISS_UPCALL, BAD_UPCALL }
+classify_upcall(const struct dpif_upcall *upcall)
+{
+ union user_action_cookie cookie;
+
+ /* First look at the upcall type. */
+ switch (upcall->type) {
+ case DPIF_UC_ACTION:
+ break;
+
+ case DPIF_UC_MISS:
+ return MISS_UPCALL;
+
+ case DPIF_N_UC_TYPES:
+ default:
+ VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32, upcall->type);
+ return BAD_UPCALL;
+ }
+
+ /* "action" upcalls need a closer look. */
+ memcpy(&cookie, &upcall->userdata, sizeof(cookie));
+ switch (cookie.type) {
+ case USER_ACTION_COOKIE_SFLOW:
+ return SFLOW_UPCALL;
+
+ case USER_ACTION_COOKIE_SLOW_PATH:
+ return MISS_UPCALL;
+
+ case USER_ACTION_COOKIE_UNSPEC:
+ default:
+ VLOG_WARN_RL(&rl, "invalid user cookie : 0x%"PRIx64, upcall->userdata);
+ return BAD_UPCALL;
+ }
+}
+
static void
-handle_userspace_upcall(struct ofproto_dpif *ofproto,
- struct dpif_upcall *upcall)
+handle_sflow_upcall(struct ofproto_dpif *ofproto,
+ const struct dpif_upcall *upcall)
{
- struct user_action_cookie cookie;
+ union user_action_cookie cookie;
enum odp_key_fitness fitness;
ovs_be16 initial_tci;
struct flow flow;
- memcpy(&cookie, &upcall->userdata, sizeof(cookie));
-
fitness = ofproto_dpif_extract_flow_key(ofproto, upcall->key,
upcall->key_len, &flow,
&initial_tci, upcall->packet);
if (fitness == ODP_FIT_ERROR) {
- ofpbuf_delete(upcall->packet);
return;
}
- if (cookie.type == USER_ACTION_COOKIE_SFLOW) {
- if (ofproto->sflow) {
- dpif_sflow_received(ofproto->sflow, upcall->packet, &flow,
- &cookie);
- }
- } else {
- VLOG_WARN_RL(&rl, "invalid user cookie : 0x%"PRIx64, upcall->userdata);
- }
- ofpbuf_delete(upcall->packet);
+ memcpy(&cookie, &upcall->userdata, sizeof(cookie));
+ dpif_sflow_received(ofproto->sflow, upcall->packet, &flow, &cookie);
}
static int
handle_upcalls(struct ofproto_dpif *ofproto, unsigned int max_batch)
{
struct dpif_upcall misses[FLOW_MISS_MAX_BATCH];
+ struct ofpbuf miss_bufs[FLOW_MISS_MAX_BATCH];
+ uint64_t miss_buf_stubs[FLOW_MISS_MAX_BATCH][4096 / 8];
+ int n_processed;
int n_misses;
int i;
- assert (max_batch <= FLOW_MISS_MAX_BATCH);
+ assert(max_batch <= FLOW_MISS_MAX_BATCH);
n_misses = 0;
- for (i = 0; i < max_batch; i++) {
+ for (n_processed = 0; n_processed < max_batch; n_processed++) {
struct dpif_upcall *upcall = &misses[n_misses];
+ struct ofpbuf *buf = &miss_bufs[n_misses];
int error;
- error = dpif_recv(ofproto->dpif, upcall);
+ ofpbuf_use_stub(buf, miss_buf_stubs[n_misses],
+ sizeof miss_buf_stubs[n_misses]);
+ error = dpif_recv(ofproto->dpif, upcall, buf);
if (error) {
+ ofpbuf_uninit(buf);
break;
}
- switch (upcall->type) {
- case DPIF_UC_ACTION:
- handle_userspace_upcall(ofproto, upcall);
- break;
-
- case DPIF_UC_MISS:
+ switch (classify_upcall(upcall)) {
+ case MISS_UPCALL:
/* Handle it later. */
n_misses++;
break;
- case DPIF_N_UC_TYPES:
- default:
- VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32,
- upcall->type);
+ case SFLOW_UPCALL:
+ if (ofproto->sflow) {
+ handle_sflow_upcall(ofproto, upcall);
+ }
+ ofpbuf_uninit(buf);
+ break;
+
+ case BAD_UPCALL:
+ ofpbuf_uninit(buf);
break;
}
}
+ /* Handle deferred MISS_UPCALL processing. */
handle_miss_upcalls(ofproto, misses, n_misses);
+ for (i = 0; i < n_misses; i++) {
+ ofpbuf_uninit(&miss_bufs[i]);
+ }
- return i;
+ return n_processed;
}
\f
/* Flow expiration. */
return MIN(dp_max_idle, 1000);
}
+/* Updates flow table statistics given that the datapath just reported 'stats'
+ * as 'subfacet''s statistics. */
+static void
+update_subfacet_stats(struct subfacet *subfacet,
+ const struct dpif_flow_stats *stats)
+{
+ struct facet *facet = subfacet->facet;
+
+ if (stats->n_packets >= subfacet->dp_packet_count) {
+ uint64_t extra = stats->n_packets - subfacet->dp_packet_count;
+ facet->packet_count += extra;
+ } else {
+ VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
+ }
+
+ if (stats->n_bytes >= subfacet->dp_byte_count) {
+ facet->byte_count += stats->n_bytes - subfacet->dp_byte_count;
+ } else {
+ VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
+ }
+
+ subfacet->dp_packet_count = stats->n_packets;
+ subfacet->dp_byte_count = stats->n_bytes;
+
+ facet->tcp_flags |= stats->tcp_flags;
+
+ subfacet_update_time(subfacet, stats->used);
+ if (facet->accounted_bytes < facet->byte_count) {
+ facet_learn(facet);
+ facet_account(facet);
+ facet->accounted_bytes = facet->byte_count;
+ }
+ facet_push_stats(facet);
+}
+
+/* 'key' with length 'key_len' bytes is a flow in 'dpif' that we know nothing
+ * about, or a flow that shouldn't be installed but was anyway. Delete it. */
+static void
+delete_unexpected_flow(struct dpif *dpif,
+ const struct nlattr *key, size_t key_len)
+{
+ if (!VLOG_DROP_WARN(&rl)) {
+ struct ds s;
+
+ ds_init(&s);
+ odp_flow_key_format(key, key_len, &s);
+ VLOG_WARN("unexpected flow from datapath %s", ds_cstr(&s));
+ ds_destroy(&s);
+ }
+
+ COVERAGE_INC(facet_unexpected);
+ dpif_flow_del(dpif, key, key_len, NULL);
+}
+
/* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
*
* This function also pushes statistics updates to rules which each facet
struct subfacet *subfacet;
subfacet = subfacet_find(p, key, key_len);
- if (subfacet && subfacet->installed) {
- struct facet *facet = subfacet->facet;
-
- if (stats->n_packets >= subfacet->dp_packet_count) {
- uint64_t extra = stats->n_packets - subfacet->dp_packet_count;
- facet->packet_count += extra;
- } else {
- VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
- }
-
- if (stats->n_bytes >= subfacet->dp_byte_count) {
- facet->byte_count += stats->n_bytes - subfacet->dp_byte_count;
- } else {
- VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
- }
-
- subfacet->dp_packet_count = stats->n_packets;
- subfacet->dp_byte_count = stats->n_bytes;
-
- facet->tcp_flags |= stats->tcp_flags;
-
- subfacet_update_time(subfacet, stats->used);
- facet_account(facet, true);
- facet_push_stats(facet);
- } else {
- if (!VLOG_DROP_WARN(&rl)) {
- struct ds s;
+ switch (subfacet ? subfacet->path : SF_NOT_INSTALLED) {
+ case SF_FAST_PATH:
+ update_subfacet_stats(subfacet, stats);
+ break;
- ds_init(&s);
- odp_flow_key_format(key, key_len, &s);
- VLOG_WARN("unexpected flow from datapath %s", ds_cstr(&s));
- ds_destroy(&s);
- }
+ case SF_SLOW_PATH:
+ /* Stats are updated per-packet. */
+ break;
- COVERAGE_INC(facet_unexpected);
- /* There's a flow in the datapath that we know nothing about, or a
- * flow that shouldn't be installed but was anyway. Delete it. */
- dpif_flow_del(p->dpif, key, key_len, NULL);
+ case SF_NOT_INSTALLED:
+ default:
+ delete_unexpected_flow(p->dpif, key, key_len);
+ break;
}
}
dpif_flow_dump_done(&dump);
return bucket * BUCKET_WIDTH;
}
+enum { EXPIRE_MAX_BATCH = 50 };
+
+static void
+expire_batch(struct ofproto_dpif *ofproto, struct subfacet **subfacets, int n)
+{
+ struct odputil_keybuf keybufs[EXPIRE_MAX_BATCH];
+ struct dpif_op ops[EXPIRE_MAX_BATCH];
+ struct dpif_op *opsp[EXPIRE_MAX_BATCH];
+ struct ofpbuf keys[EXPIRE_MAX_BATCH];
+ struct dpif_flow_stats stats[EXPIRE_MAX_BATCH];
+ int i;
+
+ for (i = 0; i < n; i++) {
+ ops[i].type = DPIF_OP_FLOW_DEL;
+ subfacet_get_key(subfacets[i], &keybufs[i], &keys[i]);
+ ops[i].u.flow_del.key = keys[i].data;
+ ops[i].u.flow_del.key_len = keys[i].size;
+ ops[i].u.flow_del.stats = &stats[i];
+ opsp[i] = &ops[i];
+ }
+
+ dpif_operate(ofproto->dpif, opsp, n);
+ for (i = 0; i < n; i++) {
+ subfacet_reset_dp_stats(subfacets[i], &stats[i]);
+ subfacets[i]->path = SF_NOT_INSTALLED;
+ subfacet_destroy(subfacets[i]);
+ }
+}
+
static void
expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
{
- long long int cutoff = time_msec() - dp_max_idle;
+ /* Cutoff time for most flows. */
+ long long int normal_cutoff = time_msec() - dp_max_idle;
+
+ /* We really want to keep flows for special protocols around, so use a more
+ * conservative cutoff. */
+ long long int special_cutoff = time_msec() - 10000;
+
struct subfacet *subfacet, *next_subfacet;
+ struct subfacet *batch[EXPIRE_MAX_BATCH];
+ int n_batch;
+ n_batch = 0;
HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
&ofproto->subfacets) {
+ long long int cutoff;
+
+ cutoff = (subfacet->slow & (SLOW_CFM | SLOW_LACP | SLOW_STP)
+ ? special_cutoff
+ : normal_cutoff);
if (subfacet->used < cutoff) {
- subfacet_destroy(subfacet);
+ if (subfacet->path != SF_NOT_INSTALLED) {
+ batch[n_batch++] = subfacet;
+ if (n_batch >= EXPIRE_MAX_BATCH) {
+ expire_batch(ofproto, batch, n_batch);
+ n_batch = 0;
+ }
+ } else {
+ subfacet_destroy(subfacet);
+ }
}
}
+
+ if (n_batch > 0) {
+ expire_batch(ofproto, batch, n_batch);
+ }
}
/* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
* 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
* the ofproto's classifier table.
*
+ * 'hash' must be the return value of flow_hash(flow, 0).
+ *
* The facet will initially have no subfacets. The caller should create (at
* least) one subfacet with subfacet_create(). */
static struct facet *
-facet_create(struct rule_dpif *rule, const struct flow *flow)
+facet_create(struct rule_dpif *rule, const struct flow *flow, uint32_t hash)
{
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));
+ hmap_insert(&ofproto->facets, &facet->hmap_node, hash);
list_push_back(&rule->facets, &facet->list_node);
facet->rule = rule;
facet->flow = *flow;
facet_free(facet);
}
+/* Feed information from 'facet' back into the learning table to keep it in
+ * sync with what is actually flowing through the datapath. */
static void
-facet_account(struct facet *facet, bool may_flow_mod)
+facet_learn(struct facet *facet)
{
struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
- uint64_t n_bytes;
- struct subfacet *subfacet;
- const struct nlattr *a;
- unsigned int left;
- ovs_be16 vlan_tci;
+ struct action_xlate_ctx ctx;
- if (facet->byte_count <= facet->accounted_bytes) {
+ if (!facet->has_learn
+ && !facet->has_normal
+ && (!facet->has_fin_timeout
+ || !(facet->tcp_flags & (TCP_FIN | TCP_RST)))) {
return;
}
- n_bytes = facet->byte_count - facet->accounted_bytes;
- facet->accounted_bytes = facet->byte_count;
-
- /* 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->has_learn || facet->has_normal
- || (facet->has_fin_timeout
- && facet->tcp_flags & (TCP_FIN | TCP_RST))) {
- struct action_xlate_ctx ctx;
- action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
- facet->flow.vlan_tci,
- facet->rule, facet->tcp_flags, NULL);
- ctx.may_learn_macs = true;
- ctx.may_flow_mod = may_flow_mod;
- ofpbuf_delete(xlate_actions(&ctx, facet->rule->up.actions,
- facet->rule->up.n_actions));
- }
+ action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
+ facet->flow.vlan_tci,
+ facet->rule, facet->tcp_flags, NULL);
+ ctx.may_learn = true;
+ xlate_actions_for_side_effects(&ctx, facet->rule->up.ofpacts,
+ facet->rule->up.ofpacts_len);
+}
+
+static void
+facet_account(struct facet *facet)
+{
+ struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
+ struct subfacet *subfacet;
+ const struct nlattr *a;
+ unsigned int left;
+ ovs_be16 vlan_tci;
+ uint64_t n_bytes;
if (!facet->has_normal || !ofproto->has_bonded_bundles) {
return;
}
+ n_bytes = facet->byte_count - facet->accounted_bytes;
/* This loop feeds byte counters to bond_account() for rebalancing to use
* as a basis. We also need to track the actual VLAN on which the packet
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)));
+ if (facet) {
+ const struct rule *rule = &facet->rule->up;
+ const struct ofpact *ofpacts = rule->ofpacts;
+ size_t ofpacts_len = rule->ofpacts_len;
+
+ if (ofpacts->type == OFPACT_CONTROLLER &&
+ ofpact_next(ofpacts) >= ofpact_end(ofpacts, ofpacts_len)) {
+ return true;
+ }
+ }
+ return false;
}
/* Folds all of 'facet''s statistics into its rule. Also updates the
}
facet_push_stats(facet);
- facet_account(facet, false);
+ if (facet->accounted_bytes < facet->byte_count) {
+ facet_account(facet);
+ facet->accounted_bytes = facet->byte_count;
+ }
if (ofproto->netflow && !facet_is_controller_flow(facet)) {
struct ofexpired expired;
/* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
* Returns it if found, otherwise a null pointer.
*
+ * 'hash' must be the return value of flow_hash(flow, 0).
+ *
* 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)
+facet_find(struct ofproto_dpif *ofproto,
+ const struct flow *flow, uint32_t hash)
{
struct facet *facet;
- HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, flow_hash(flow, 0),
- &ofproto->facets) {
+ HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, hash, &ofproto->facets) {
if (flow_equal(flow, &facet->flow)) {
return facet;
}
/* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
* Returns it if found, otherwise a null pointer.
*
+ * 'hash' must be the return value of flow_hash(flow, 0).
+ *
* The returned facet is guaranteed to be valid. */
static struct facet *
-facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow)
+facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow,
+ uint32_t hash)
{
- struct facet *facet = facet_find(ofproto, flow);
+ struct facet *facet;
- /* 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. */
+ facet = facet_find(ofproto, flow, hash);
if (facet
&& (ofproto->need_revalidate
- || tag_set_intersects(&ofproto->revalidate_set, facet->tags))
- && !facet_revalidate(facet)) {
- COVERAGE_INC(facet_invalidated);
- return NULL;
+ || tag_set_intersects(&ofproto->revalidate_set, facet->tags))) {
+ facet_revalidate(facet);
}
return facet;
}
+static const char *
+subfacet_path_to_string(enum subfacet_path path)
+{
+ switch (path) {
+ case SF_NOT_INSTALLED:
+ return "not installed";
+ case SF_FAST_PATH:
+ return "in fast path";
+ case SF_SLOW_PATH:
+ return "in slow path";
+ default:
+ return "<error>";
+ }
+}
+
+/* Returns the path in which a subfacet should be installed if its 'slow'
+ * member has the specified value. */
+static enum subfacet_path
+subfacet_want_path(enum slow_path_reason slow)
+{
+ return slow ? SF_SLOW_PATH : SF_FAST_PATH;
+}
+
+/* Returns true if 'subfacet' needs to have its datapath flow updated,
+ * supposing that its actions have been recalculated as 'want_actions' and that
+ * 'slow' is nonzero iff 'subfacet' should be in the slow path. */
+static bool
+subfacet_should_install(struct subfacet *subfacet, enum slow_path_reason slow,
+ const struct ofpbuf *want_actions)
+{
+ enum subfacet_path want_path = subfacet_want_path(slow);
+ return (want_path != subfacet->path
+ || (want_path == SF_FAST_PATH
+ && (subfacet->actions_len != want_actions->size
+ || memcmp(subfacet->actions, want_actions->data,
+ subfacet->actions_len))));
+}
+
static bool
facet_check_consistency(struct facet *facet)
{
struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
+ uint64_t odp_actions_stub[1024 / 8];
+ struct ofpbuf odp_actions;
+
struct rule_dpif *rule;
struct subfacet *subfacet;
bool may_log = false;
bool ok;
/* Check the rule for consistency. */
- rule = rule_dpif_lookup(ofproto, &facet->flow, 0);
- if (!rule) {
- if (!VLOG_DROP_WARN(&rl)) {
- char *s = flow_to_string(&facet->flow);
- VLOG_WARN("%s: facet should not exist", s);
- free(s);
- }
- return false;
- } else if (rule != facet->rule) {
+ rule = rule_dpif_lookup(ofproto, &facet->flow);
+ ok = rule == facet->rule;
+ if (!ok) {
may_log = !VLOG_DROP_WARN(&rl);
- ok = false;
if (may_log) {
struct ds s;
VLOG_WARN("%s", ds_cstr(&s));
ds_destroy(&s);
}
- } else {
- ok = true;
}
/* Check the datapath actions for consistency. */
+ ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
+ enum subfacet_path want_path;
+ struct odputil_keybuf keybuf;
struct action_xlate_ctx ctx;
- struct ofpbuf *odp_actions;
- bool actions_changed;
- bool should_install;
+ struct ofpbuf key;
+ struct ds s;
action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
subfacet->initial_tci, rule, 0, NULL);
- odp_actions = xlate_actions(&ctx, rule->up.actions,
- rule->up.n_actions);
-
- should_install = (ctx.may_set_up_flow
- && subfacet->key_fitness != ODP_FIT_TOO_LITTLE);
- if (!should_install && !subfacet->installed) {
- /* The actions for uninstallable flows may vary from one packet to
- * the next, so don't compare the actions. */
- goto next;
- }
-
- actions_changed = (subfacet->actions_len != odp_actions->size
- || memcmp(subfacet->actions, odp_actions->data,
- subfacet->actions_len));
- if (should_install != subfacet->installed || actions_changed) {
- if (ok) {
- may_log = !VLOG_DROP_WARN(&rl);
- ok = false;
- }
+ xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len,
+ &odp_actions);
- if (may_log) {
- struct odputil_keybuf keybuf;
- struct ofpbuf key;
- struct ds s;
+ if (subfacet->path == SF_NOT_INSTALLED) {
+ /* This only happens if the datapath reported an error when we
+ * tried to install the flow. Don't flag another error here. */
+ continue;
+ }
- ds_init(&s);
- subfacet_get_key(subfacet, &keybuf, &key);
- odp_flow_key_format(key.data, key.size, &s);
+ want_path = subfacet_want_path(subfacet->slow);
+ if (want_path == SF_SLOW_PATH && subfacet->path == SF_SLOW_PATH) {
+ /* The actions for slow-path flows may legitimately vary from one
+ * packet to the next. We're done. */
+ continue;
+ }
- ds_put_cstr(&s, ": inconsistency in subfacet");
- if (should_install != subfacet->installed) {
- enum odp_key_fitness fitness = subfacet->key_fitness;
+ if (!subfacet_should_install(subfacet, subfacet->slow, &odp_actions)) {
+ continue;
+ }
- ds_put_format(&s, " (should%s have been installed)",
- should_install ? "" : " not");
- ds_put_format(&s, " (may_set_up_flow=%s, fitness=%s)",
- ctx.may_set_up_flow ? "true" : "false",
- odp_key_fitness_to_string(fitness));
- }
- if (actions_changed) {
- ds_put_cstr(&s, " (actions were: ");
- format_odp_actions(&s, subfacet->actions,
- subfacet->actions_len);
- ds_put_cstr(&s, ") (correct actions: ");
- format_odp_actions(&s, odp_actions->data,
- odp_actions->size);
- ds_put_char(&s, ')');
- } else {
- ds_put_cstr(&s, " (actions: ");
- format_odp_actions(&s, subfacet->actions,
- subfacet->actions_len);
- ds_put_char(&s, ')');
- }
- VLOG_WARN("%s", ds_cstr(&s));
- ds_destroy(&s);
- }
+ /* Inconsistency! */
+ if (ok) {
+ may_log = !VLOG_DROP_WARN(&rl);
+ ok = false;
+ }
+ if (!may_log) {
+ /* Rate-limited, skip reporting. */
+ continue;
}
- next:
- ofpbuf_delete(odp_actions);
+ ds_init(&s);
+ subfacet_get_key(subfacet, &keybuf, &key);
+ odp_flow_key_format(key.data, key.size, &s);
+
+ ds_put_cstr(&s, ": inconsistency in subfacet");
+ if (want_path != subfacet->path) {
+ enum odp_key_fitness fitness = subfacet->key_fitness;
+
+ ds_put_format(&s, " (%s, fitness=%s)",
+ subfacet_path_to_string(subfacet->path),
+ odp_key_fitness_to_string(fitness));
+ ds_put_format(&s, " (should have been %s)",
+ subfacet_path_to_string(want_path));
+ } else if (want_path == SF_FAST_PATH) {
+ ds_put_cstr(&s, " (actions were: ");
+ format_odp_actions(&s, subfacet->actions,
+ subfacet->actions_len);
+ ds_put_cstr(&s, ") (correct actions: ");
+ format_odp_actions(&s, odp_actions.data, odp_actions.size);
+ ds_put_char(&s, ')');
+ } else {
+ ds_put_cstr(&s, " (actions: ");
+ format_odp_actions(&s, subfacet->actions,
+ subfacet->actions_len);
+ ds_put_char(&s, ')');
+ }
+ VLOG_WARN("%s", ds_cstr(&s));
+ ds_destroy(&s);
}
+ ofpbuf_uninit(&odp_actions);
return ok;
}
* '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
+ * where it is and recompiles its actions anyway. */
+static void
facet_revalidate(struct facet *facet)
{
struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
struct actions *new_actions;
struct action_xlate_ctx ctx;
+ uint64_t odp_actions_stub[1024 / 8];
+ struct ofpbuf odp_actions;
+
struct rule_dpif *new_rule;
struct subfacet *subfacet;
- bool actions_changed;
int i;
COVERAGE_INC(facet_revalidate);
- /* Determine the new rule. */
- new_rule = rule_dpif_lookup(ofproto, &facet->flow, 0);
- if (!new_rule) {
- /* No new rule, so delete the facet. */
- facet_remove(facet);
- return false;
- }
+ new_rule = rule_dpif_lookup(ofproto, &facet->flow);
/* Calculate new datapath actions.
*
i = 0;
new_actions = NULL;
memset(&ctx, 0, sizeof ctx);
+ ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
- struct ofpbuf *odp_actions;
- bool should_install;
+ enum slow_path_reason slow;
action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
subfacet->initial_tci, new_rule, 0, NULL);
- odp_actions = xlate_actions(&ctx, new_rule->up.actions,
- new_rule->up.n_actions);
- actions_changed = (subfacet->actions_len != odp_actions->size
- || memcmp(subfacet->actions, odp_actions->data,
- subfacet->actions_len));
-
- should_install = (ctx.may_set_up_flow
- && subfacet->key_fitness != ODP_FIT_TOO_LITTLE);
- if (actions_changed || should_install != subfacet->installed) {
- if (should_install) {
- struct dpif_flow_stats stats;
+ xlate_actions(&ctx, new_rule->up.ofpacts, new_rule->up.ofpacts_len,
+ &odp_actions);
- subfacet_install(subfacet,
- odp_actions->data, odp_actions->size, &stats);
- subfacet_update_stats(subfacet, &stats);
- } else {
- subfacet_uninstall(subfacet);
- }
+ slow = (subfacet->slow & SLOW_MATCH) | ctx.slow;
+ if (subfacet_should_install(subfacet, slow, &odp_actions)) {
+ struct dpif_flow_stats stats;
+
+ subfacet_install(subfacet,
+ odp_actions.data, odp_actions.size, &stats, slow);
+ subfacet_update_stats(subfacet, &stats);
if (!new_actions) {
new_actions = xcalloc(list_size(&facet->subfacets),
sizeof *new_actions);
}
- new_actions[i].odp_actions = xmemdup(odp_actions->data,
- odp_actions->size);
- new_actions[i].actions_len = odp_actions->size;
+ new_actions[i].odp_actions = xmemdup(odp_actions.data,
+ odp_actions.size);
+ new_actions[i].actions_len = odp_actions.size;
}
- ofpbuf_delete(odp_actions);
i++;
}
+ ofpbuf_uninit(&odp_actions);
+
if (new_actions) {
facet_flush_stats(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;
facet->has_learn = ctx.has_learn;
facet->has_normal = ctx.has_normal;
facet->has_fin_timeout = ctx.has_fin_timeout;
facet->mirrors = ctx.mirrors;
- if (new_actions) {
- i = 0;
- LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
- if (new_actions[i].odp_actions) {
- free(subfacet->actions);
- subfacet->actions = new_actions[i].odp_actions;
- subfacet->actions_len = new_actions[i].actions_len;
- }
- i++;
+
+ i = 0;
+ LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
+ subfacet->slow = (subfacet->slow & SLOW_MATCH) | ctx.slow;
+
+ if (new_actions && new_actions[i].odp_actions) {
+ free(subfacet->actions);
+ subfacet->actions = new_actions[i].odp_actions;
+ subfacet->actions_len = new_actions[i].actions_len;
}
- free(new_actions);
+ i++;
}
+ free(new_actions);
+
if (facet->rule != new_rule) {
COVERAGE_INC(facet_changed_rule);
list_remove(&facet->list_node);
facet->used = new_rule->up.created;
facet->prev_used = facet->used;
}
-
- return true;
}
/* Updates 'facet''s used time. Caller is responsible for calling
static void
facet_push_stats(struct facet *facet)
{
- uint64_t new_packets, new_bytes;
+ struct dpif_flow_stats stats;
assert(facet->packet_count >= facet->prev_packet_count);
assert(facet->byte_count >= facet->prev_byte_count);
assert(facet->used >= facet->prev_used);
- new_packets = facet->packet_count - facet->prev_packet_count;
- new_bytes = facet->byte_count - facet->prev_byte_count;
+ stats.n_packets = facet->packet_count - facet->prev_packet_count;
+ stats.n_bytes = facet->byte_count - facet->prev_byte_count;
+ stats.used = facet->used;
+ stats.tcp_flags = 0;
- if (new_packets || new_bytes || facet->used > facet->prev_used) {
+ if (stats.n_packets || stats.n_bytes || facet->used > facet->prev_used) {
facet->prev_packet_count = facet->packet_count;
facet->prev_byte_count = facet->byte_count;
facet->prev_used = facet->used;
- flow_push_stats(facet->rule, &facet->flow,
- new_packets, new_bytes, facet->used);
+ flow_push_stats(facet->rule, &facet->flow, &stats);
update_mirror_stats(ofproto_dpif_cast(facet->rule->up.ofproto),
- facet->mirrors, new_packets, new_bytes);
+ facet->mirrors, stats.n_packets, stats.n_bytes);
}
}
-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)
+rule_credit_stats(struct rule_dpif *rule, const struct dpif_flow_stats *stats)
{
- struct ofproto_push *push = CONTAINER_OF(ctx, struct ofproto_push, ctx);
-
- if (rule) {
- rule->packet_count += push->packets;
- rule->byte_count += push->bytes;
- ofproto_rule_update_used(&rule->up, push->used);
- }
+ rule->packet_count += stats->n_packets;
+ rule->byte_count += stats->n_bytes;
+ ofproto_rule_update_used(&rule->up, stats->used);
}
/* Pushes flow statistics to the rules which 'flow' resubmits into given
* 'rule''s actions and mirrors. */
static void
flow_push_stats(struct rule_dpif *rule,
- const struct flow *flow, uint64_t packets, uint64_t bytes,
- long long int used)
+ const struct flow *flow, const struct dpif_flow_stats *stats)
{
struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
- struct ofproto_push push;
-
- push.packets = packets;
- push.bytes = bytes;
- push.used = used;
+ struct action_xlate_ctx ctx;
- ofproto_rule_update_used(&rule->up, used);
+ ofproto_rule_update_used(&rule->up, stats->used);
- action_xlate_ctx_init(&push.ctx, ofproto, flow, flow->vlan_tci, rule,
+ action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci, rule,
0, NULL);
- push.ctx.resubmit_hook = push_resubmit;
- ofpbuf_delete(xlate_actions(&push.ctx,
- rule->up.actions, rule->up.n_actions));
+ ctx.resubmit_stats = stats;
+ xlate_actions_for_side_effects(&ctx, rule->up.ofpacts,
+ rule->up.ofpacts_len);
}
\f
/* Subfacets. */
subfacet_destroy(subfacet);
}
- subfacet = xzalloc(sizeof *subfacet);
+ subfacet = (list_is_empty(&facet->subfacets)
+ ? &facet->one_subfacet
+ : xmalloc(sizeof *subfacet));
hmap_insert(&ofproto->subfacets, &subfacet->hmap_node, key_hash);
list_push_back(&facet->subfacets, &subfacet->list_node);
subfacet->facet = facet;
- subfacet->used = time_msec();
subfacet->key_fitness = key_fitness;
if (key_fitness != ODP_FIT_PERFECT) {
subfacet->key = xmemdup(key, key_len);
subfacet->key_len = key_len;
+ } else {
+ subfacet->key = NULL;
+ subfacet->key_len = 0;
}
- subfacet->installed = false;
+ subfacet->used = time_msec();
+ subfacet->dp_packet_count = 0;
+ subfacet->dp_byte_count = 0;
+ subfacet->actions_len = 0;
+ subfacet->actions = NULL;
+ subfacet->slow = (subfacet->key_fitness == ODP_FIT_TOO_LITTLE
+ ? SLOW_MATCH
+ : 0);
+ subfacet->path = SF_NOT_INSTALLED;
subfacet->initial_tci = initial_tci;
return subfacet;
list_remove(&subfacet->list_node);
free(subfacet->key);
free(subfacet->actions);
- free(subfacet);
+ if (subfacet != &facet->one_subfacet) {
+ free(subfacet);
+ }
}
/* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
}
}
-/* Composes the datapath actions for 'subfacet' based on its rule's actions. */
+/* Composes the datapath actions for 'subfacet' based on its rule's actions.
+ * Translates the actions into 'odp_actions', which the caller must have
+ * initialized and is responsible for uninitializing. */
static void
-subfacet_make_actions(struct subfacet *subfacet, const struct ofpbuf *packet)
+subfacet_make_actions(struct subfacet *subfacet, const struct ofpbuf *packet,
+ struct ofpbuf *odp_actions)
{
struct facet *facet = subfacet->facet;
struct rule_dpif *rule = facet->rule;
struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
- struct ofpbuf *odp_actions;
+
struct action_xlate_ctx ctx;
action_xlate_ctx_init(&ctx, ofproto, &facet->flow, subfacet->initial_tci,
rule, 0, packet);
- odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
+ xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len, odp_actions);
facet->tags = ctx.tags;
- facet->may_install = ctx.may_set_up_flow;
facet->has_learn = ctx.has_learn;
facet->has_normal = ctx.has_normal;
facet->has_fin_timeout = ctx.has_fin_timeout;
facet->nf_flow.output_iface = ctx.nf_output_iface;
facet->mirrors = ctx.mirrors;
+ subfacet->slow = (subfacet->slow & SLOW_MATCH) | ctx.slow;
if (subfacet->actions_len != odp_actions->size
|| memcmp(subfacet->actions, odp_actions->data, odp_actions->size)) {
free(subfacet->actions);
subfacet->actions_len = odp_actions->size;
subfacet->actions = xmemdup(odp_actions->data, odp_actions->size);
}
-
- ofpbuf_delete(odp_actions);
}
/* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
static int
subfacet_install(struct subfacet *subfacet,
const struct nlattr *actions, size_t actions_len,
- struct dpif_flow_stats *stats)
+ struct dpif_flow_stats *stats,
+ enum slow_path_reason slow)
{
struct facet *facet = subfacet->facet;
struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
+ enum subfacet_path path = subfacet_want_path(slow);
+ uint64_t slow_path_stub[128 / 8];
struct odputil_keybuf keybuf;
enum dpif_flow_put_flags flags;
struct ofpbuf key;
flags |= DPIF_FP_ZERO_STATS;
}
+ if (path == SF_SLOW_PATH) {
+ compose_slow_path(ofproto, &facet->flow, slow,
+ slow_path_stub, sizeof slow_path_stub,
+ &actions, &actions_len);
+ }
+
subfacet_get_key(subfacet, &keybuf, &key);
ret = dpif_flow_put(ofproto->dpif, flags, key.data, key.size,
actions, actions_len, stats);
subfacet_reset_dp_stats(subfacet, stats);
}
+ if (!ret) {
+ subfacet->path = path;
+ }
return ret;
}
+static int
+subfacet_reinstall(struct subfacet *subfacet, struct dpif_flow_stats *stats)
+{
+ return subfacet_install(subfacet, subfacet->actions, subfacet->actions_len,
+ stats, subfacet->slow);
+}
+
/* If 'subfacet' is installed in the datapath, uninstalls it. */
static void
subfacet_uninstall(struct subfacet *subfacet)
{
- if (subfacet->installed) {
+ if (subfacet->path != SF_NOT_INSTALLED) {
struct rule_dpif *rule = subfacet->facet->rule;
struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
struct odputil_keybuf keybuf;
if (!error) {
subfacet_update_stats(subfacet, &stats);
}
- subfacet->installed = false;
+ subfacet->path = SF_NOT_INSTALLED;
} else {
assert(subfacet->dp_packet_count == 0);
assert(subfacet->dp_byte_count == 0);
/* Rules. */
static struct rule_dpif *
-rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow,
- uint8_t table_id)
+rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow)
+{
+ struct ofport_dpif *port;
+ struct rule_dpif *rule;
+
+ rule = rule_dpif_lookup__(ofproto, flow, 0);
+ if (rule) {
+ return rule;
+ }
+
+ port = get_ofp_port(ofproto, flow->in_port);
+ if (!port) {
+ VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, flow->in_port);
+ return ofproto->miss_rule;
+ }
+
+ if (port->up.pp.config & OFPUTIL_PC_NO_PACKET_IN) {
+ return ofproto->no_packet_in_rule;
+ }
+ return ofproto->miss_rule;
+}
+
+static struct rule_dpif *
+rule_dpif_lookup__(struct ofproto_dpif *ofproto, const struct flow *flow,
+ uint8_t table_id)
{
struct cls_rule *cls_rule;
struct classifier *cls;
uint8_t table_id;
enum ofperr error;
- error = validate_actions(rule->up.actions, rule->up.n_actions,
- &rule->up.cr.flow, ofproto->max_ports);
+ error = ofpacts_check(rule->up.ofpacts, rule->up.ofpacts_len,
+ &rule->up.cr.flow, ofproto->max_ports);
if (error) {
return error;
}
{
struct rule_dpif *rule = rule_dpif_cast(rule_);
struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
+
+ struct dpif_flow_stats stats;
+
struct action_xlate_ctx ctx;
- struct ofpbuf *odp_actions;
- size_t size;
+ uint64_t odp_actions_stub[1024 / 8];
+ struct ofpbuf odp_actions;
+
+ dpif_flow_stats_extract(flow, packet, &stats);
+ rule_credit_stats(rule, &stats);
+ ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci,
- rule, packet_get_tcp_flags(packet, 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->packet_count++;
- rule->byte_count += size;
- flow_push_stats(rule, flow, 1, size, time_msec());
- }
- ofpbuf_delete(odp_actions);
+ rule, stats.tcp_flags, packet);
+ ctx.resubmit_stats = &stats;
+ xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len, &odp_actions);
+
+ execute_odp_actions(ofproto, flow, odp_actions.data,
+ odp_actions.size, packet);
+
+ ofpbuf_uninit(&odp_actions);
return 0;
}
struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
enum ofperr error;
- error = validate_actions(rule->up.actions, rule->up.n_actions,
- &rule->up.cr.flow, ofproto->max_ports);
+ error = ofpacts_check(rule->up.ofpacts, rule->up.ofpacts_len,
+ &rule->up.cr.flow, ofproto->max_ports);
if (error) {
ofoperation_complete(rule->up.pending, error);
return;
\f
/* OpenFlow to datapath action translation. */
-static void do_xlate_actions(const union ofp_action *in, size_t n_in,
- struct action_xlate_ctx *ctx);
+static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len,
+ struct action_xlate_ctx *);
static void xlate_normal(struct action_xlate_ctx *);
+/* Composes an ODP action for a "slow path" action for 'flow' within 'ofproto'.
+ * The action will state 'slow' as the reason that the action is in the slow
+ * path. (This is purely informational: it allows a human viewing "ovs-dpctl
+ * dump-flows" output to see why a flow is in the slow path.)
+ *
+ * The 'stub_size' bytes in 'stub' will be used to store the action.
+ * 'stub_size' must be large enough for the action.
+ *
+ * The action and its size will be stored in '*actionsp' and '*actions_lenp',
+ * respectively. */
+static void
+compose_slow_path(const struct ofproto_dpif *ofproto, const struct flow *flow,
+ enum slow_path_reason slow,
+ uint64_t *stub, size_t stub_size,
+ const struct nlattr **actionsp, size_t *actions_lenp)
+{
+ union user_action_cookie cookie;
+ struct ofpbuf buf;
+
+ cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
+ cookie.slow_path.unused = 0;
+ cookie.slow_path.reason = slow;
+
+ ofpbuf_use_stack(&buf, stub, stub_size);
+ if (slow & (SLOW_CFM | SLOW_LACP | SLOW_STP)) {
+ uint32_t pid = dpif_port_get_pid(ofproto->dpif, UINT16_MAX);
+ odp_put_userspace_action(pid, &cookie, &buf);
+ } else {
+ put_userspace_action(ofproto, &buf, flow, &cookie);
+ }
+ *actionsp = buf.data;
+ *actions_lenp = buf.size;
+}
+
static size_t
put_userspace_action(const struct ofproto_dpif *ofproto,
struct ofpbuf *odp_actions,
const struct flow *flow,
- const struct user_action_cookie *cookie)
+ const union user_action_cookie *cookie)
{
uint32_t pid;
return odp_put_userspace_action(pid, cookie, odp_actions);
}
+static void
+compose_sflow_cookie(const struct ofproto_dpif *ofproto,
+ ovs_be16 vlan_tci, uint32_t odp_port,
+ unsigned int n_outputs, union user_action_cookie *cookie)
+{
+ int ifindex;
+
+ cookie->type = USER_ACTION_COOKIE_SFLOW;
+ cookie->sflow.vlan_tci = vlan_tci;
+
+ /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output
+ * port information") for the interpretation of cookie->output. */
+ switch (n_outputs) {
+ case 0:
+ /* 0x40000000 | 256 means "packet dropped for unknown reason". */
+ cookie->sflow.output = 0x40000000 | 256;
+ break;
+
+ case 1:
+ ifindex = dpif_sflow_odp_port_to_ifindex(ofproto->sflow, odp_port);
+ if (ifindex) {
+ cookie->sflow.output = ifindex;
+ break;
+ }
+ /* Fall through. */
+ default:
+ /* 0x80000000 means "multiple output ports. */
+ cookie->sflow.output = 0x80000000 | n_outputs;
+ break;
+ }
+}
+
/* Compose SAMPLE action for sFlow. */
static size_t
compose_sflow_action(const struct ofproto_dpif *ofproto,
const struct flow *flow,
uint32_t odp_port)
{
- uint32_t port_ifindex;
uint32_t probability;
- struct user_action_cookie cookie;
+ union user_action_cookie cookie;
size_t sample_offset, actions_offset;
- int cookie_offset, n_output;
+ int cookie_offset;
if (!ofproto->sflow || flow->in_port == OFPP_NONE) {
return 0;
}
- if (odp_port == OVSP_NONE) {
- port_ifindex = 0;
- n_output = 0;
- } else {
- port_ifindex = dpif_sflow_odp_port_to_ifindex(ofproto->sflow, odp_port);
- n_output = 1;
- }
-
sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE);
/* Number of packets out of UINT_MAX to sample. */
nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability);
actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS);
-
- cookie.type = USER_ACTION_COOKIE_SFLOW;
- cookie.data = port_ifindex;
- cookie.n_output = n_output;
- cookie.vlan_tci = 0;
+ compose_sflow_cookie(ofproto, htons(0), odp_port,
+ odp_port == OVSP_NONE ? 0 : 1, &cookie);
cookie_offset = put_userspace_action(ofproto, odp_actions, flow, &cookie);
nl_msg_end_nested(odp_actions, actions_offset);
fix_sflow_action(struct action_xlate_ctx *ctx)
{
const struct flow *base = &ctx->base_flow;
- struct user_action_cookie *cookie;
+ union user_action_cookie *cookie;
if (!ctx->user_cookie_offset) {
return;
}
cookie = ofpbuf_at(ctx->odp_actions, ctx->user_cookie_offset,
- sizeof(*cookie));
- assert(cookie != NULL);
+ sizeof(*cookie));
assert(cookie->type == USER_ACTION_COOKIE_SFLOW);
- if (ctx->sflow_n_outputs) {
- cookie->data = dpif_sflow_odp_port_to_ifindex(ctx->ofproto->sflow,
- ctx->sflow_odp_port);
- }
- if (ctx->sflow_n_outputs >= 255) {
- cookie->n_output = 255;
- } else {
- cookie->n_output = ctx->sflow_n_outputs;
- }
- cookie->vlan_tci = base->vlan_tci;
+ compose_sflow_cookie(ctx->ofproto, base->vlan_tci,
+ ctx->sflow_odp_port, ctx->sflow_n_outputs, cookie);
}
static void
/* Look up a flow with 'in_port' as the input port. */
old_in_port = ctx->flow.in_port;
ctx->flow.in_port = in_port;
- rule = rule_dpif_lookup(ofproto, &ctx->flow, table_id);
+ rule = rule_dpif_lookup__(ofproto, &ctx->flow, table_id);
/* Tag the flow. */
if (table_id > 0 && table_id < N_TABLES) {
struct table_dpif *table = &ofproto->tables[table_id];
if (table->other_table) {
- ctx->tags |= (rule
+ ctx->tags |= (rule && rule->tag
? rule->tag
: rule_calculate_tag(&ctx->flow,
&table->other_table->wc,
if (rule) {
struct rule_dpif *old_rule = ctx->rule;
+ if (ctx->resubmit_stats) {
+ rule_credit_stats(rule, ctx->resubmit_stats);
+ }
+
ctx->recurse++;
ctx->rule = rule;
- do_xlate_actions(rule->up.actions, rule->up.n_actions, ctx);
+ do_xlate_actions(rule->up.ofpacts, rule->up.ofpacts_len, ctx);
ctx->rule = old_rule;
ctx->recurse--;
}
}
static void
-xlate_resubmit_table(struct action_xlate_ctx *ctx,
- const struct nx_action_resubmit *nar)
+xlate_ofpact_resubmit(struct action_xlate_ctx *ctx,
+ const struct ofpact_resubmit *resubmit)
{
uint16_t in_port;
uint8_t table_id;
- in_port = (nar->in_port == htons(OFPP_IN_PORT)
- ? ctx->flow.in_port
- : ntohs(nar->in_port));
- table_id = nar->table == 255 ? ctx->table_id : nar->table;
+ in_port = resubmit->in_port;
+ if (in_port == OFPP_IN_PORT) {
+ in_port = ctx->flow.in_port;
+ }
+
+ table_id = resubmit->table_id;
+ if (table_id == 255) {
+ table_id = ctx->table_id;
+ }
xlate_table_action(ctx, in_port, table_id);
}
struct ofputil_packet_in pin;
struct ofpbuf *packet;
- ctx->may_set_up_flow = false;
+ ctx->slow |= SLOW_CONTROLLER;
if (!ctx->packet) {
return;
}
eth_pop_vlan(packet);
eh = packet->l2;
- assert(eh->eth_type == ctx->flow.dl_type);
+
+ /* If the Ethernet type is less than ETH_TYPE_MIN, it's likely an 802.2
+ * LLC frame. Calculating the Ethernet type of these frames is more
+ * trouble than seems appropriate for a simple assertion. */
+ assert(ntohs(eh->eth_type) < ETH_TYPE_MIN
+ || eh->eth_type == ctx->flow.dl_type);
+
memcpy(eh->eth_src, ctx->flow.dl_src, sizeof eh->eth_src);
memcpy(eh->eth_dst, ctx->flow.dl_dst, sizeof eh->eth_dst);
}
static void
-xlate_output_action__(struct action_xlate_ctx *ctx,
- uint16_t port, uint16_t max_len)
+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;
static void
xlate_output_reg_action(struct action_xlate_ctx *ctx,
- const struct nx_action_output_reg *naor)
+ const struct ofpact_output_reg *or)
{
- struct mf_subfield src;
- uint64_t ofp_port;
-
- nxm_decode(&src, naor->src, naor->ofs_nbits);
- ofp_port = mf_get_subfield(&src, &ctx->flow);
-
- if (ofp_port <= UINT16_MAX) {
- xlate_output_action__(ctx, ofp_port, ntohs(naor->max_len));
+ uint64_t port = mf_get_subfield(&or->src, &ctx->flow);
+ if (port <= UINT16_MAX) {
+ xlate_output_action(ctx, port, or->max_len);
}
}
-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));
-}
-
static void
xlate_enqueue_action(struct action_xlate_ctx *ctx,
- const struct ofp_action_enqueue *oae)
+ const struct ofpact_enqueue *enqueue)
{
- uint16_t ofp_port;
+ uint16_t ofp_port = enqueue->port;
+ uint32_t queue_id = enqueue->queue;
uint32_t flow_priority, priority;
int error;
- error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(oae->queue_id),
- &priority);
+ /* Translate queue to priority. */
+ error = dpif_queue_to_priority(ctx->ofproto->dpif, queue_id, &priority);
if (error) {
/* Fall back to ordinary output action. */
- xlate_output_action__(ctx, ntohs(oae->port), 0);
+ xlate_output_action(ctx, enqueue->port, 0);
return;
}
- /* Figure out datapath output port. */
- ofp_port = ntohs(oae->port);
+ /* Check output port. */
if (ofp_port == OFPP_IN_PORT) {
ofp_port = ctx->flow.in_port;
} else if (ofp_port == ctx->flow.in_port) {
}
static void
-xlate_set_queue_action(struct action_xlate_ctx *ctx,
- const struct nx_action_set_queue *nasq)
+xlate_set_queue_action(struct action_xlate_ctx *ctx, uint32_t queue_id)
{
- uint32_t priority;
- int error;
+ uint32_t skb_priority;
- 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
+ if (!dpif_queue_to_priority(ctx->ofproto->dpif, queue_id, &skb_priority)) {
+ ctx->flow.skb_priority = skb_priority;
+ } else {
+ /* Couldn't translate queue to a priority. Nothing to do. A warning
* has already been logged. */
- return;
}
-
- ctx->flow.skb_priority = priority;
}
struct xlate_reg_state {
static void
xlate_autopath(struct action_xlate_ctx *ctx,
- const struct nx_action_autopath *naa)
+ const struct ofpact_autopath *ap)
{
- uint16_t ofp_port = ntohl(naa->id);
+ uint16_t ofp_port = ap->port;
struct ofport_dpif *port = get_ofp_port(ctx->ofproto, ofp_port);
if (!port || !port->bundle) {
ofp_port = slave->up.ofp_port;
}
}
- autopath_execute(naa, &ctx->flow, ofp_port);
+ nxm_reg_load(&ap->dst, ofp_port, &ctx->flow);
}
static bool
}
}
+static void
+xlate_bundle_action(struct action_xlate_ctx *ctx,
+ const struct ofpact_bundle *bundle)
+{
+ uint16_t port;
+
+ port = bundle_execute(bundle, &ctx->flow, slave_enabled_cb, ctx->ofproto);
+ if (bundle->dst.field) {
+ nxm_reg_load(&bundle->dst, port, &ctx->flow);
+ } else {
+ xlate_output_action(ctx, port, 0);
+ }
+}
+
static void
xlate_learn_action(struct action_xlate_ctx *ctx,
- const struct nx_action_learn *learn)
+ const struct ofpact_learn *learn)
{
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
struct ofputil_flow_mod fm;
+ uint64_t ofpacts_stub[1024 / 8];
+ struct ofpbuf ofpacts;
int error;
- learn_execute(learn, &ctx->flow, &fm);
+ ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
+ learn_execute(learn, &ctx->flow, &fm, &ofpacts);
error = ofproto_flow_mod(&ctx->ofproto->up, &fm);
if (error && !VLOG_DROP_WARN(&rl)) {
ofperr_get_name(error));
}
- free(fm.actions);
+ ofpbuf_uninit(&ofpacts);
}
/* Reduces '*timeout' to no more than 'max'. A value of zero in either case
static void
xlate_fin_timeout(struct action_xlate_ctx *ctx,
- const struct nx_action_fin_timeout *naft)
+ const struct ofpact_fin_timeout *oft)
{
if (ctx->tcp_flags & (TCP_FIN | TCP_RST) && ctx->rule) {
struct rule_dpif *rule = ctx->rule;
- reduce_timeout(ntohs(naft->fin_idle_timeout), &rule->up.idle_timeout);
- reduce_timeout(ntohs(naft->fin_hard_timeout), &rule->up.hard_timeout);
+ reduce_timeout(oft->fin_idle_timeout, &rule->up.idle_timeout);
+ reduce_timeout(oft->fin_hard_timeout, &rule->up.hard_timeout);
}
}
}
static void
-do_xlate_actions(const union ofp_action *in, size_t n_in,
+do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len,
struct action_xlate_ctx *ctx)
{
const struct ofport_dpif *port;
- const union ofp_action *ia;
bool was_evictable = true;
- size_t left;
+ const struct ofpact *a;
port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
if (port && !may_receive(port, ctx)) {
was_evictable = ctx->rule->up.evictable;
ctx->rule->up.evictable = false;
}
- OFPUTIL_ACTION_FOR_EACH_UNSAFE (ia, left, in, n_in) {
- const struct ofp_action_dl_addr *oada;
- 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;
- const struct nx_action_bundle *nab;
- const struct nx_action_output_reg *naor;
- const struct nx_action_controller *nac;
- enum ofputil_action_code code;
- ovs_be64 tun_id;
+ OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
+ struct ofpact_controller *controller;
if (ctx->exit) {
break;
}
- code = ofputil_decode_action_unsafe(ia);
- switch (code) {
- case OFPUTIL_OFPAT10_OUTPUT:
- xlate_output_action(ctx, &ia->output);
+ switch (a->type) {
+ case OFPACT_OUTPUT:
+ xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port,
+ ofpact_get_OUTPUT(a)->max_len);
+ break;
+
+ case OFPACT_CONTROLLER:
+ controller = ofpact_get_CONTROLLER(a);
+ execute_controller_action(ctx, controller->max_len,
+ controller->reason,
+ controller->controller_id);
+ break;
+
+ case OFPACT_ENQUEUE:
+ xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a));
break;
- case OFPUTIL_OFPAT10_SET_VLAN_VID:
+ case OFPACT_SET_VLAN_VID:
ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK);
- ctx->flow.vlan_tci |= ia->vlan_vid.vlan_vid | htons(VLAN_CFI);
+ ctx->flow.vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid)
+ | htons(VLAN_CFI));
break;
- case OFPUTIL_OFPAT10_SET_VLAN_PCP:
+ case OFPACT_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);
+ ctx->flow.vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp
+ << VLAN_PCP_SHIFT)
+ | VLAN_CFI);
break;
- case OFPUTIL_OFPAT10_STRIP_VLAN:
+ case OFPACT_STRIP_VLAN:
ctx->flow.vlan_tci = htons(0);
break;
- case OFPUTIL_OFPAT10_SET_DL_SRC:
- oada = ((struct ofp_action_dl_addr *) ia);
- memcpy(ctx->flow.dl_src, oada->dl_addr, ETH_ADDR_LEN);
+ case OFPACT_SET_ETH_SRC:
+ memcpy(ctx->flow.dl_src, ofpact_get_SET_ETH_SRC(a)->mac,
+ ETH_ADDR_LEN);
break;
- case OFPUTIL_OFPAT10_SET_DL_DST:
- oada = ((struct ofp_action_dl_addr *) ia);
- memcpy(ctx->flow.dl_dst, oada->dl_addr, ETH_ADDR_LEN);
+ case OFPACT_SET_ETH_DST:
+ memcpy(ctx->flow.dl_dst, ofpact_get_SET_ETH_DST(a)->mac,
+ ETH_ADDR_LEN);
break;
- case OFPUTIL_OFPAT10_SET_NW_SRC:
- ctx->flow.nw_src = ia->nw_addr.nw_addr;
+ case OFPACT_SET_IPV4_SRC:
+ ctx->flow.nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4;
break;
- case OFPUTIL_OFPAT10_SET_NW_DST:
- ctx->flow.nw_dst = ia->nw_addr.nw_addr;
+ case OFPACT_SET_IPV4_DST:
+ ctx->flow.nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4;
break;
- case OFPUTIL_OFPAT10_SET_NW_TOS:
+ case OFPACT_SET_IPV4_DSCP:
/* OpenFlow 1.0 only supports IPv4. */
if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
ctx->flow.nw_tos &= ~IP_DSCP_MASK;
- ctx->flow.nw_tos |= ia->nw_tos.nw_tos & IP_DSCP_MASK;
+ ctx->flow.nw_tos |= ofpact_get_SET_IPV4_DSCP(a)->dscp;
}
break;
- case OFPUTIL_OFPAT10_SET_TP_SRC:
- ctx->flow.tp_src = ia->tp_port.tp_port;
- break;
-
- case OFPUTIL_OFPAT10_SET_TP_DST:
- ctx->flow.tp_dst = ia->tp_port.tp_port;
- break;
-
- case OFPUTIL_OFPAT10_ENQUEUE:
- xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia);
+ case OFPACT_SET_L4_SRC_PORT:
+ ctx->flow.tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port);
break;
- case OFPUTIL_NXAST_RESUBMIT:
- nar = (const struct nx_action_resubmit *) ia;
- xlate_table_action(ctx, ntohs(nar->in_port), ctx->table_id);
+ case OFPACT_SET_L4_DST_PORT:
+ ctx->flow.tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port);
break;
- case OFPUTIL_NXAST_RESUBMIT_TABLE:
- xlate_resubmit_table(ctx, (const struct nx_action_resubmit *) ia);
+ case OFPACT_RESUBMIT:
+ xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a));
break;
- case OFPUTIL_NXAST_SET_TUNNEL:
- nast = (const struct nx_action_set_tunnel *) ia;
- tun_id = htonll(ntohl(nast->tun_id));
- ctx->flow.tun_id = tun_id;
+ case OFPACT_SET_TUNNEL:
+ ctx->flow.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id);
break;
- case OFPUTIL_NXAST_SET_QUEUE:
- nasq = (const struct nx_action_set_queue *) ia;
- xlate_set_queue_action(ctx, nasq);
+ case OFPACT_SET_QUEUE:
+ xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id);
break;
- case OFPUTIL_NXAST_POP_QUEUE:
+ case OFPACT_POP_QUEUE:
ctx->flow.skb_priority = ctx->orig_skb_priority;
break;
- case OFPUTIL_NXAST_REG_MOVE:
- nxm_execute_reg_move((const struct nx_action_reg_move *) ia,
- &ctx->flow);
- break;
-
- case OFPUTIL_NXAST_REG_LOAD:
- nxm_execute_reg_load((const struct nx_action_reg_load *) ia,
- &ctx->flow);
+ case OFPACT_REG_MOVE:
+ nxm_execute_reg_move(ofpact_get_REG_MOVE(a), &ctx->flow);
break;
- case OFPUTIL_NXAST_NOTE:
- /* Nothing to do. */
+ case OFPACT_REG_LOAD:
+ nxm_execute_reg_load(ofpact_get_REG_LOAD(a), &ctx->flow);
break;
- case OFPUTIL_NXAST_SET_TUNNEL64:
- tun_id = ((const struct nx_action_set_tunnel64 *) ia)->tun_id;
- ctx->flow.tun_id = tun_id;
+ case OFPACT_DEC_TTL:
+ if (compose_dec_ttl(ctx)) {
+ goto out;
+ }
break;
- case OFPUTIL_NXAST_MULTIPATH:
- nam = (const struct nx_action_multipath *) ia;
- multipath_execute(nam, &ctx->flow);
+ case OFPACT_NOTE:
+ /* Nothing to do. */
break;
- case OFPUTIL_NXAST_AUTOPATH:
- naa = (const struct nx_action_autopath *) ia;
- xlate_autopath(ctx, naa);
+ case OFPACT_MULTIPATH:
+ multipath_execute(ofpact_get_MULTIPATH(a), &ctx->flow);
break;
- case OFPUTIL_NXAST_BUNDLE:
- ctx->ofproto->has_bundle_action = true;
- nab = (const struct nx_action_bundle *) ia;
- xlate_output_action__(ctx, bundle_execute(nab, &ctx->flow,
- slave_enabled_cb,
- ctx->ofproto), 0);
+ case OFPACT_AUTOPATH:
+ xlate_autopath(ctx, ofpact_get_AUTOPATH(a));
break;
- case OFPUTIL_NXAST_BUNDLE_LOAD:
+ case OFPACT_BUNDLE:
ctx->ofproto->has_bundle_action = true;
- nab = (const struct nx_action_bundle *) ia;
- bundle_execute_load(nab, &ctx->flow, slave_enabled_cb,
- ctx->ofproto);
+ xlate_bundle_action(ctx, ofpact_get_BUNDLE(a));
break;
- case OFPUTIL_NXAST_OUTPUT_REG:
- naor = (const struct nx_action_output_reg *) ia;
- xlate_output_reg_action(ctx, naor);
+ case OFPACT_OUTPUT_REG:
+ xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a));
break;
- case OFPUTIL_NXAST_LEARN:
+ case OFPACT_LEARN:
ctx->has_learn = true;
- if (ctx->may_flow_mod) {
- xlate_learn_action(ctx, (const struct nx_action_learn *) ia);
- }
- break;
-
- case OFPUTIL_NXAST_DEC_TTL:
- if (compose_dec_ttl(ctx)) {
- goto out;
+ if (ctx->may_learn) {
+ xlate_learn_action(ctx, ofpact_get_LEARN(a));
}
break;
- case OFPUTIL_NXAST_EXIT:
+ case OFPACT_EXIT:
ctx->exit = true;
break;
- case OFPUTIL_NXAST_FIN_TIMEOUT:
+ case OFPACT_FIN_TIMEOUT:
ctx->has_fin_timeout = true;
- xlate_fin_timeout(ctx, (const struct nx_action_fin_timeout *) ia);
- break;
-
- case OFPUTIL_NXAST_CONTROLLER:
- nac = (const struct nx_action_controller *) ia;
- execute_controller_action(ctx, ntohs(nac->max_len), nac->reason,
- ntohs(nac->controller_id));
+ xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a));
break;
}
}
ctx->base_flow.vlan_tci = initial_tci;
ctx->rule = rule;
ctx->packet = packet;
- ctx->may_learn_macs = packet != NULL;
- ctx->may_flow_mod = packet != NULL;
+ ctx->may_learn = packet != NULL;
ctx->tcp_flags = tcp_flags;
ctx->resubmit_hook = NULL;
+ ctx->resubmit_stats = NULL;
}
-static struct ofpbuf *
+/* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts'
+ * into datapath actions in 'odp_actions', using 'ctx'. */
+static void
xlate_actions(struct action_xlate_ctx *ctx,
- const union ofp_action *in, size_t n_in)
+ const struct ofpact *ofpacts, size_t ofpacts_len,
+ struct ofpbuf *odp_actions)
{
- struct flow orig_flow = ctx->flow;
+ /* Normally false. Set to true if we ever hit MAX_RESUBMIT_RECURSION, so
+ * that in the future we always keep a copy of the original flow for
+ * tracing purposes. */
+ static bool hit_resubmit_limit;
+
+ enum slow_path_reason special;
COVERAGE_INC(ofproto_dpif_xlate);
- ctx->odp_actions = ofpbuf_new(512);
- ofpbuf_reserve(ctx->odp_actions, NL_A_U32_SIZE);
+ ofpbuf_clear(odp_actions);
+ ofpbuf_reserve(odp_actions, NL_A_U32_SIZE);
+
+ ctx->odp_actions = odp_actions;
ctx->tags = 0;
- ctx->may_set_up_flow = true;
+ ctx->slow = 0;
ctx->has_learn = false;
ctx->has_normal = false;
ctx->has_fin_timeout = false;
ctx->table_id = 0;
ctx->exit = false;
+ if (ctx->ofproto->has_mirrors || hit_resubmit_limit) {
+ /* Do this conditionally because the copy is expensive enough that it
+ * shows up in profiles.
+ *
+ * We keep orig_flow in 'ctx' only because I couldn't make GCC 4.4
+ * believe that I wasn't using it without initializing it if I kept it
+ * in a local variable. */
+ ctx->orig_flow = ctx->flow;
+ }
+
if (ctx->flow.nw_frag & FLOW_NW_FRAG_ANY) {
switch (ctx->ofproto->up.frag_handling) {
case OFPC_FRAG_NORMAL:
break;
case OFPC_FRAG_DROP:
- return ctx->odp_actions;
+ return;
case OFPC_FRAG_REASM:
NOT_REACHED();
}
}
- if (process_special(ctx->ofproto, &ctx->flow, ctx->packet)) {
- ctx->may_set_up_flow = false;
- return ctx->odp_actions;
+ special = process_special(ctx->ofproto, &ctx->flow, ctx->packet);
+ if (special) {
+ ctx->slow |= special;
} else {
static struct vlog_rate_limit trace_rl = VLOG_RATE_LIMIT_INIT(1, 1);
- struct flow original_flow = ctx->flow;
ovs_be16 initial_tci = ctx->base_flow.vlan_tci;
add_sflow_action(ctx);
- do_xlate_actions(in, n_in, ctx);
-
- if (ctx->max_resubmit_trigger && !ctx->resubmit_hook
- && !VLOG_DROP_ERR(&trace_rl)) {
- struct ds ds = DS_EMPTY_INITIALIZER;
-
- ofproto_trace(ctx->ofproto, &original_flow, ctx->packet,
- initial_tci, &ds);
- VLOG_ERR("Trace triggered by excessive resubmit recursion:\n%s",
- ds_cstr(&ds));
- ds_destroy(&ds);
+ do_xlate_actions(ofpacts, ofpacts_len, ctx);
+
+ if (ctx->max_resubmit_trigger && !ctx->resubmit_hook) {
+ if (!hit_resubmit_limit) {
+ /* We didn't record the original flow. Make sure we do from
+ * now on. */
+ hit_resubmit_limit = true;
+ } else if (!VLOG_DROP_ERR(&trace_rl)) {
+ struct ds ds = DS_EMPTY_INITIALIZER;
+
+ ofproto_trace(ctx->ofproto, &ctx->orig_flow, ctx->packet,
+ initial_tci, &ds);
+ VLOG_ERR("Trace triggered by excessive resubmit "
+ "recursion:\n%s", ds_cstr(&ds));
+ ds_destroy(&ds);
+ }
}
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;
+ ctx->slow |= SLOW_IN_BAND;
if (ctx->packet
&& connmgr_msg_in_hook(ctx->ofproto->up.connmgr, &ctx->flow,
ctx->packet)) {
compose_output_action(ctx, OFPP_LOCAL);
}
}
- add_mirror_actions(ctx, &orig_flow);
+ if (ctx->ofproto->has_mirrors) {
+ add_mirror_actions(ctx, &ctx->orig_flow);
+ }
fix_sflow_action(ctx);
}
+}
+
+/* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts'
+ * into datapath actions, using 'ctx', and discards the datapath actions. */
+static void
+xlate_actions_for_side_effects(struct action_xlate_ctx *ctx,
+ const struct ofpact *ofpacts,
+ size_t ofpacts_len)
+{
+ uint64_t odp_actions_stub[1024 / 8];
+ struct ofpbuf odp_actions;
- return ctx->odp_actions;
+ ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
+ xlate_actions(ctx, ofpacts, ofpacts_len, &odp_actions);
+ ofpbuf_uninit(&odp_actions);
}
\f
/* OFPP_NORMAL implementation. */
return !m->vlans || bitmap_is_set(m->vlans, vlan);
}
-/* Returns true if a packet with Ethernet destination MAC 'dst' may be mirrored
- * to a VLAN. In general most packets may be mirrored but we want to drop
- * protocols that may confuse switches. */
-static bool
-eth_dst_may_rspan(const uint8_t dst[ETH_ADDR_LEN])
-{
- /* If you change this function's behavior, please update corresponding
- * documentation in vswitch.xml at the same time. */
- if (dst[0] != 0x01) {
- /* All the currently banned MACs happen to start with 01 currently, so
- * this is a quick way to eliminate most of the good ones. */
- } else {
- if (eth_addr_is_reserved(dst)) {
- /* Drop STP, IEEE pause frames, and other reserved protocols
- * (01-80-c2-00-00-0x). */
- return false;
- }
-
- if (dst[0] == 0x01 && dst[1] == 0x00 && dst[2] == 0x0c) {
- /* Cisco OUI. */
- if ((dst[3] & 0xfe) == 0xcc &&
- (dst[4] & 0xfe) == 0xcc &&
- (dst[5] & 0xfe) == 0xcc) {
- /* Drop the following protocols plus others following the same
- pattern:
-
- CDP, VTP, DTP, PAgP (01-00-0c-cc-cc-cc)
- Spanning Tree PVSTP+ (01-00-0c-cc-cc-cd)
- STP Uplink Fast (01-00-0c-cd-cd-cd) */
- return false;
- }
-
- if (!(dst[3] | dst[4] | dst[5])) {
- /* Drop Inter Switch Link packets (01-00-0c-00-00-00). */
- return false;
- }
- }
- }
- return true;
-}
-
static void
add_mirror_actions(struct action_xlate_ctx *ctx, const struct flow *orig_flow)
{
size_t left;
in_bundle = lookup_input_bundle(ctx->ofproto, orig_flow->in_port,
- ctx->packet != NULL);
+ ctx->packet != NULL, NULL);
if (!in_bundle) {
return;
}
ctx->mirrors |= m->dup_mirrors;
if (m->out) {
output_normal(ctx, m->out, vlan);
- } else if (eth_dst_may_rspan(orig_flow->dl_dst)
- && vlan != m->out_vlan) {
+ } else if (vlan != m->out_vlan
+ && !eth_addr_is_reserved(orig_flow->dl_dst)) {
struct ofbundle *bundle;
HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
}
static struct ofbundle *
-lookup_input_bundle(struct ofproto_dpif *ofproto, uint16_t in_port, bool warn)
+lookup_input_bundle(const struct ofproto_dpif *ofproto, uint16_t in_port,
+ bool warn, struct ofport_dpif **in_ofportp)
{
struct ofport_dpif *ofport;
- /* Special-case OFPP_NONE, which a controller may use as the ingress
- * port for traffic that it is sourcing. */
- if (in_port == OFPP_NONE) {
- return &ofpp_none_bundle;
- }
-
/* Find the port and bundle for the received packet. */
ofport = get_ofp_port(ofproto, in_port);
+ if (in_ofportp) {
+ *in_ofportp = ofport;
+ }
if (ofport && ofport->bundle) {
return ofport->bundle;
}
+ /* Special-case OFPP_NONE, which a controller may use as the ingress
+ * port for traffic that it is sourcing. */
+ if (in_port == OFPP_NONE) {
+ return &ofpp_none_bundle;
+ }
+
/* Odd. A few possible reasons here:
*
* - We deleted a port but there are still a few packets queued up
* we don't know about.
*
* - The ofproto client didn't configure the port as part of a bundle.
+ * This is particularly likely to happen if a packet was received on the
+ * port after it was created, but before the client had a chance to
+ * configure its bundle.
*/
if (warn) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
/* Drop frames for reserved multicast addresses
* only if forward_bpdu option is absent. */
- if (eth_addr_is_reserved(flow->dl_dst) && !ofproto->up.forward_bpdu) {
+ if (!ofproto->up.forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) {
return false;
}
ctx->has_normal = true;
in_bundle = lookup_input_bundle(ctx->ofproto, ctx->flow.in_port,
- ctx->packet != NULL);
+ ctx->packet != NULL, &in_port);
if (!in_bundle) {
return;
}
- /* We know 'in_port' exists unless it is "ofpp_none_bundle",
- * since lookup_input_bundle() succeeded. */
- in_port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
-
/* Drop malformed frames. */
if (ctx->flow.dl_type == htons(ETH_TYPE_VLAN) &&
!(ctx->flow.vlan_tci & htons(VLAN_CFI))) {
}
/* Learn source MAC. */
- if (ctx->may_learn_macs) {
+ if (ctx->may_learn) {
update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle);
}
if (table->catchall_table != catchall || table->other_table != other) {
table->catchall_table = catchall;
table->other_table = other;
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_FLOW_TABLE;
}
}
if (table->other_table && rule->tag) {
tag_set_add(&ofproto->revalidate_set, rule->tag);
} else {
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_FLOW_TABLE;
}
}
}
struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
if (frag_handling != OFPC_FRAG_REASM) {
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
return true;
} else {
return false;
static enum ofperr
packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
const struct flow *flow,
- const union ofp_action *ofp_actions, size_t n_ofp_actions)
+ const struct ofpact *ofpacts, size_t ofpacts_len)
{
struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
enum ofperr error;
return OFPERR_NXBRC_BAD_IN_PORT;
}
- error = validate_actions(ofp_actions, n_ofp_actions, flow,
- ofproto->max_ports);
+ error = ofpacts_check(ofpacts, ofpacts_len, flow, ofproto->max_ports);
if (!error) {
struct odputil_keybuf keybuf;
- struct ofpbuf *odp_actions;
- struct ofproto_push push;
+ struct dpif_flow_stats stats;
+
struct ofpbuf key;
+ struct action_xlate_ctx ctx;
+ uint64_t odp_actions_stub[1024 / 8];
+ struct ofpbuf odp_actions;
+
ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
odp_flow_key_from_flow(&key, flow);
- action_xlate_ctx_init(&push.ctx, ofproto, flow, flow->vlan_tci, NULL,
- packet_get_tcp_flags(packet, flow), packet);
+ dpif_flow_stats_extract(flow, packet, &stats);
- /* Ensure that resubmits in 'ofp_actions' get accounted to their
- * matching rules. */
- push.packets = 1;
- push.bytes = packet->size;
- push.used = time_msec();
- push.ctx.resubmit_hook = push_resubmit;
+ action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci, NULL,
+ packet_get_tcp_flags(packet, flow), packet);
+ ctx.resubmit_stats = &stats;
- odp_actions = xlate_actions(&push.ctx, ofp_actions, n_ofp_actions);
+ ofpbuf_use_stub(&odp_actions,
+ odp_actions_stub, sizeof odp_actions_stub);
+ xlate_actions(&ctx, ofpacts, ofpacts_len, &odp_actions);
dpif_execute(ofproto->dpif, key.data, key.size,
- odp_actions->data, odp_actions->size, packet);
- ofpbuf_delete(odp_actions);
+ odp_actions.data, odp_actions.size, packet);
+ ofpbuf_uninit(&odp_actions);
}
return error;
}
struct ofexpired expired;
LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
- if (subfacet->installed) {
+ if (subfacet->path == SF_FAST_PATH) {
struct dpif_flow_stats stats;
- subfacet_install(subfacet, subfacet->actions,
- subfacet->actions_len, &stats);
+ subfacet_reinstall(subfacet, &stats);
subfacet_update_stats(subfacet, &stats);
}
}
ds_put_char_multiple(result, '\t', level);
ds_put_cstr(result, "OpenFlow ");
- ofp_print_actions(result, rule->up.actions, rule->up.n_actions);
+ ofpacts_format(rule->up.ofpacts, rule->up.ofpacts_len, result);
ds_put_char(result, '\n');
}
/* ofproto/trace dpname flow [-generate] */
const char *flow_s = argv[2];
const char *generate_s = argv[3];
- int error;
- /* Convert string to datapath key. */
- ofpbuf_init(&odp_key, 0);
- error = odp_flow_key_from_string(flow_s, NULL, &odp_key);
- if (error) {
- unixctl_command_reply_error(conn, "Bad flow syntax");
- goto exit;
- }
+ /* Allow 'flow_s' to be either a datapath flow or an OpenFlow-like
+ * flow. We guess which type it is based on whether 'flow_s' contains
+ * an '(', since a datapath flow always contains '(') but an
+ * OpenFlow-like flow should not (in fact it's allowed but I believe
+ * that's not documented anywhere).
+ *
+ * An alternative would be to try to parse 'flow_s' both ways, but then
+ * it would be tricky giving a sensible error message. After all, do
+ * you just say "syntax error" or do you present both error messages?
+ * Both choices seem lousy. */
+ if (strchr(flow_s, '(')) {
+ int error;
+
+ /* Convert string to datapath key. */
+ ofpbuf_init(&odp_key, 0);
+ error = odp_flow_key_from_string(flow_s, NULL, &odp_key);
+ if (error) {
+ unixctl_command_reply_error(conn, "Bad flow syntax");
+ goto exit;
+ }
- /* Convert odp_key to flow. */
- error = ofproto_dpif_extract_flow_key(ofproto, odp_key.data,
- odp_key.size, &flow,
- &initial_tci, NULL);
- if (error == ODP_FIT_ERROR) {
- unixctl_command_reply_error(conn, "Invalid flow");
- goto exit;
+ /* Convert odp_key to flow. */
+ error = ofproto_dpif_extract_flow_key(ofproto, odp_key.data,
+ odp_key.size, &flow,
+ &initial_tci, NULL);
+ if (error == ODP_FIT_ERROR) {
+ unixctl_command_reply_error(conn, "Invalid flow");
+ goto exit;
+ }
+ } else {
+ char *error_s;
+
+ error_s = parse_ofp_exact_flow(&flow, argv[2]);
+ if (error_s) {
+ unixctl_command_reply_error(conn, error_s);
+ free(error_s);
+ goto exit;
+ }
+
+ initial_tci = flow.vlan_tci;
+ vsp_adjust_flow(ofproto, &flow);
}
/* Generate a packet, if requested. */
flow_format(ds, flow);
ds_put_char(ds, '\n');
- rule = rule_dpif_lookup(ofproto, flow, 0);
+ rule = rule_dpif_lookup(ofproto, flow);
+
trace_format_rule(ds, 0, 0, rule);
+ if (rule == ofproto->miss_rule) {
+ ds_put_cstr(ds, "\nNo match, flow generates \"packet in\"s.\n");
+ } else if (rule == ofproto->no_packet_in_rule) {
+ ds_put_cstr(ds, "\nNo match, packets dropped because "
+ "OFPPC_NO_PACKET_IN is set on in_port.\n");
+ }
+
if (rule) {
+ uint64_t odp_actions_stub[1024 / 8];
+ struct ofpbuf odp_actions;
+
struct trace_ctx trace;
- struct ofpbuf *odp_actions;
uint8_t tcp_flags;
tcp_flags = packet ? packet_get_tcp_flags(packet, flow) : 0;
trace.result = ds;
trace.flow = *flow;
+ ofpbuf_use_stub(&odp_actions,
+ odp_actions_stub, sizeof odp_actions_stub);
action_xlate_ctx_init(&trace.ctx, ofproto, flow, initial_tci,
rule, tcp_flags, packet);
trace.ctx.resubmit_hook = trace_resubmit;
- odp_actions = xlate_actions(&trace.ctx,
- rule->up.actions, rule->up.n_actions);
+ xlate_actions(&trace.ctx, rule->up.ofpacts, rule->up.ofpacts_len,
+ &odp_actions);
ds_put_char(ds, '\n');
trace_format_flow(ds, 0, "Final flow", &trace);
ds_put_cstr(ds, "Datapath actions: ");
- format_odp_actions(ds, odp_actions->data, odp_actions->size);
- ofpbuf_delete(odp_actions);
+ format_odp_actions(ds, odp_actions.data, odp_actions.size);
+ ofpbuf_uninit(&odp_actions);
+
+ if (trace.ctx.slow) {
+ enum slow_path_reason slow;
+
+ ds_put_cstr(ds, "\nThis flow is handled by the userspace "
+ "slow path because it:");
+ for (slow = trace.ctx.slow; slow; ) {
+ enum slow_path_reason bit = rightmost_1bit(slow);
+
+ switch (bit) {
+ case SLOW_CFM:
+ ds_put_cstr(ds, "\n\t- Consists of CFM packets.");
+ break;
+ case SLOW_LACP:
+ ds_put_cstr(ds, "\n\t- Consists of LACP packets.");
+ break;
+ case SLOW_STP:
+ ds_put_cstr(ds, "\n\t- Consists of STP packets.");
+ break;
+ case SLOW_IN_BAND:
+ ds_put_cstr(ds, "\n\t- Needs in-band special case "
+ "processing.");
+ if (!packet) {
+ ds_put_cstr(ds, "\n\t (The datapath actions are "
+ "incomplete--for complete actions, "
+ "please supply a packet.)");
+ }
+ break;
+ case SLOW_CONTROLLER:
+ ds_put_cstr(ds, "\n\t- Sends \"packet-in\" messages "
+ "to the OpenFlow controller.");
+ break;
+ case SLOW_MATCH:
+ ds_put_cstr(ds, "\n\t- Needs more specific matching "
+ "than the datapath supports.");
+ break;
+ }
- if (!trace.ctx.may_set_up_flow) {
- if (packet) {
- ds_put_cstr(ds, "\nThis flow is not cachable.");
- } else {
- ds_put_cstr(ds, "\nThe datapath actions are incomplete--"
- "for complete actions, please supply a packet.");
+ slow &= ~bit;
+ }
+
+ if (slow & ~SLOW_MATCH) {
+ ds_put_cstr(ds, "\nThe datapath actions above do not reflect "
+ "the special slow-path processing.");
}
}
}
}
}
if (errors) {
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_INCONSISTENCY;
}
if (errors) {
return 0;
}
- ofproto->need_revalidate = true;
+ ofproto->need_revalidate = REV_RECONFIGURE;
if (ofport->realdev_ofp_port) {
vsp_remove(ofport);
return 0;
}
+/* Given 'flow', a flow representing a packet received on 'ofproto', checks
+ * whether 'flow->in_port' represents a Linux VLAN device. If so, changes
+ * 'flow->in_port' to the "real" device backing the VLAN device, sets
+ * 'flow->vlan_tci' to the VLAN VID, and returns true. Otherwise (which is
+ * always the case unless VLAN splinters are enabled), returns false without
+ * making any changes. */
+static bool
+vsp_adjust_flow(const struct ofproto_dpif *ofproto, struct flow *flow)
+{
+ uint16_t realdev;
+ int vid;
+
+ realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port, &vid);
+ if (!realdev) {
+ return false;
+ }
+
+ /* Cause the flow to be processed as if it came in on the real device with
+ * the VLAN device's VLAN ID. */
+ flow->in_port = realdev;
+ flow->vlan_tci = htons((vid & VLAN_VID_MASK) | VLAN_CFI);
+ return true;
+}
+
static void
vsp_remove(struct ofport_dpif *port)
{
run,
run_fast,
wait,
+ get_memory_usage,
flush,
get_features,
get_tables,
set_cfm,
get_cfm_fault,
get_cfm_remote_mpids,
+ get_cfm_health,
set_stp,
get_stp_status,
set_stp_port,
projects / cascardo / ovs.git / blobdiff