#include <inttypes.h>
#include <stdbool.h>
#include <stdlib.h>
+#include <unistd.h>
#include "bitmap.h"
#include "byte-order.h"
#include "classifier.h"
enum ofoperation_type {
OFOPERATION_ADD,
OFOPERATION_DELETE,
- OFOPERATION_MODIFY
+ OFOPERATION_MODIFY,
+ OFOPERATION_REPLACE
};
/* A single OpenFlow request can execute any number of operations. The
struct rule *rule; /* Rule being operated upon. */
enum ofoperation_type type; /* Type of operation. */
- /* OFOPERATION_ADD. */
- struct rule *victim; /* Rule being replaced, if any.. */
-
- /* OFOPERATION_MODIFY: The old actions, if the actions are changing. */
+ /* OFOPERATION_MODIFY, OFOPERATION_REPLACE: The old actions, if the actions
+ * are changing. */
struct ofpact *ofpacts;
size_t ofpacts_len;
uint32_t meter_id;
enum ofp_flow_removed_reason reason; /* Reason flow was removed. */
ovs_be64 flow_cookie; /* Rule's old flow cookie. */
+ uint16_t idle_timeout; /* Rule's old idle timeout. */
+ uint16_t hard_timeout; /* Rule's old hard timeout. */
+ bool send_flow_removed; /* Rule's old 'send_flow_removed'. */
enum ofperr error; /* 0 if no error. */
};
const struct mf_subfield *fields,
size_t n_fields);
-static void oftable_remove_rule(struct rule *rule) OVS_RELEASES(rule->evict);
+static void oftable_remove_rule(struct rule *rule) OVS_RELEASES(rule->rwlock);
static void oftable_remove_rule__(struct ofproto *ofproto,
struct classifier *cls, struct rule *rule)
- OVS_REQ_WRLOCK(cls->rwlock) OVS_RELEASES(rule->evict);
-static struct rule *oftable_replace_rule(struct rule *);
-static void oftable_substitute_rule(struct rule *old, struct rule *new);
+ OVS_REQ_WRLOCK(cls->rwlock) OVS_RELEASES(rule->rwlock);
+static void oftable_insert_rule(struct rule *);
/* A set of rules within a single OpenFlow table (oftable) that have the same
* values for the oftable's eviction_fields. A rule to be evicted, when one is
};
static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep)
- OVS_TRY_WRLOCK(true, (*rulep)->evict);
+ OVS_TRY_WRLOCK(true, (*rulep)->rwlock);
static void ofproto_evict(struct ofproto *);
static uint32_t rule_eviction_priority(struct rule *);
+static void eviction_group_add_rule(struct rule *);
+static void eviction_group_remove_rule(struct rule *);
/* ofport. */
static void ofport_destroy__(struct ofport *);
static enum ofperr add_flow(struct ofproto *, struct ofconn *,
struct ofputil_flow_mod *,
const struct ofp_header *);
+static enum ofperr modify_flows__(struct ofproto *, struct ofconn *,
+ struct ofputil_flow_mod *,
+ const struct ofp_header *, struct list *);
static void delete_flow__(struct rule *rule, struct ofopgroup *,
enum ofp_flow_removed_reason)
- OVS_RELEASES(rule->evict);
+ OVS_RELEASES(rule->rwlock);
+static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *);
static bool handle_openflow(struct ofconn *, const struct ofpbuf *);
static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *,
struct ofputil_flow_mod *,
static size_t allocated_ofproto_classes;
unsigned flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_DEFAULT;
+unsigned n_handler_threads;
enum ofproto_flow_miss_model flow_miss_model = OFPROTO_HANDLE_MISS_AUTO;
/* Map from datapath name to struct ofproto, for use by unixctl commands. */
hmap_init(&ofproto->ports);
shash_init(&ofproto->port_by_name);
simap_init(&ofproto->ofp_requests);
- ofproto->max_ports = OFPP_MAX;
+ ofproto->max_ports = ofp_to_u16(OFPP_MAX);
+ ofproto->eviction_group_timer = LLONG_MIN;
ofproto->tables = NULL;
ofproto->n_tables = 0;
hindex_init(&ofproto->cookies);
list_init(&ofproto->expirable);
- ovs_mutex_init(&ofproto->expirable_mutex, PTHREAD_MUTEX_RECURSIVE);
+ ovs_mutex_init_recursive(&ofproto->expirable_mutex);
ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name);
ofproto->state = S_OPENFLOW;
list_init(&ofproto->pending);
ofproto->vlan_bitmap = NULL;
ofproto->vlans_changed = false;
ofproto->min_mtu = INT_MAX;
+ ovs_rwlock_init(&ofproto->groups_rwlock);
+ hmap_init(&ofproto->groups);
error = ofproto->ofproto_class->construct(ofproto);
if (error) {
/* The "max_ports" member should have been set by ->construct(ofproto).
* Port 0 is not a valid OpenFlow port, so mark that as unavailable. */
- ofproto->ofp_port_ids = bitmap_allocate(ofp_to_u16(ofproto->max_ports));
+ ofproto->ofp_port_ids = bitmap_allocate(ofproto->max_ports);
bitmap_set1(ofproto->ofp_port_ids, 0);
/* Check that hidden tables, if any, are at the end. */
* Reserved ports numbered OFPP_MAX and higher are special and not subject to
* the 'max_ports' restriction. */
void
-ofproto_init_max_ports(struct ofproto *ofproto, ofp_port_t max_ports)
+ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports)
{
- ovs_assert(ofp_to_u16(max_ports) <= ofp_to_u16(OFPP_MAX));
+ ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX));
ofproto->max_ports = max_ports;
}
}
}
+/* Sets number of upcall handler threads. The default is
+ * (number of online cores - 1). */
+void
+ofproto_set_n_handler_threads(unsigned limit)
+{
+ if (limit) {
+ n_handler_threads = limit;
+ } else {
+ n_handler_threads = MAX(1, sysconf(_SC_NPROCESSORS_ONLN) - 1);
+ }
+}
+
void
ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc)
{
connmgr_get_snoops(ofproto->connmgr, snoops);
}
+/* Deletes 'rule' from 'cls' within 'ofproto'.
+ *
+ * The 'cls' argument is redundant (it is &ofproto->tables[rule->table_id].cls)
+ * but it allows Clang to do better checking. */
static void
-ofproto_flush__(struct ofproto *ofproto)
+ofproto_delete_rule(struct ofproto *ofproto, struct classifier *cls,
+ struct rule *rule)
+ OVS_REQ_WRLOCK(cls->rwlock)
{
struct ofopgroup *group;
+
+ ovs_assert(!rule->pending);
+ ovs_assert(cls == &ofproto->tables[rule->table_id].cls);
+
+ group = ofopgroup_create_unattached(ofproto);
+ ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE);
+ ovs_rwlock_wrlock(&rule->rwlock);
+ oftable_remove_rule__(ofproto, cls, rule);
+ ofproto->ofproto_class->rule_delete(rule);
+ ofopgroup_submit(group);
+}
+
+static void
+ofproto_flush__(struct ofproto *ofproto)
+{
struct oftable *table;
if (ofproto->ofproto_class->flush) {
ofproto->ofproto_class->flush(ofproto);
}
- group = ofopgroup_create_unattached(ofproto);
OFPROTO_FOR_EACH_TABLE (table, ofproto) {
struct rule *rule, *next_rule;
struct cls_cursor cursor;
cls_cursor_init(&cursor, &table->cls, NULL);
CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
if (!rule->pending) {
- ofoperation_create(group, rule, OFOPERATION_DELETE,
- OFPRR_DELETE);
- ovs_rwlock_wrlock(&rule->evict);
- oftable_remove_rule__(ofproto, &table->cls, rule);
- ofproto->ofproto_class->rule_destruct(rule);
+ ofproto_delete_rule(ofproto, &table->cls, rule);
}
}
ovs_rwlock_unlock(&table->cls.rwlock);
}
- ofopgroup_submit(group);
}
+static void delete_group(struct ofproto *ofproto, uint32_t group_id);
+
static void
ofproto_destroy__(struct ofproto *ofproto)
{
free(ofproto->meters);
}
+ delete_group(ofproto, OFPG_ALL);
+ ovs_rwlock_destroy(&ofproto->groups_rwlock);
+ hmap_destroy(&ofproto->groups);
+
connmgr_destroy(ofproto->connmgr);
hmap_remove(&all_ofprotos, &ofproto->hmap_node);
VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error));
}
+ /* Restore the eviction group heap invariant occasionally. */
+ if (p->eviction_group_timer < time_msec()) {
+ size_t i;
+
+ p->eviction_group_timer = time_msec() + 1000;
+
+ for (i = 0; i < p->n_tables; i++) {
+ struct oftable *table = &p->tables[i];
+ struct eviction_group *evg;
+ struct cls_cursor cursor;
+ struct cls_rule cr;
+ struct rule *rule;
+
+ if (!table->eviction_fields) {
+ continue;
+ }
+
+ HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
+ heap_rebuild(&evg->rules);
+ }
+
+ ovs_rwlock_rdlock(&table->cls.rwlock);
+ cls_cursor_init(&cursor, &table->cls, &cr);
+ CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
+ if (!rule->eviction_group
+ && (rule->idle_timeout || rule->hard_timeout)) {
+ eviction_group_add_rule(rule);
+ }
+ }
+ ovs_rwlock_unlock(&table->cls.rwlock);
+ }
+ }
+
if (p->ofproto_class->port_poll) {
char *devname;
ofproto_delete_flow(struct ofproto *ofproto,
const struct match *target, unsigned int priority)
{
+ struct classifier *cls = &ofproto->tables[0].cls;
struct rule *rule;
- ovs_rwlock_rdlock(&ofproto->tables[0].cls.rwlock);
- rule = rule_from_cls_rule(classifier_find_match_exactly(
- &ofproto->tables[0].cls, target, priority));
- ovs_rwlock_unlock(&ofproto->tables[0].cls.rwlock);
+ ovs_rwlock_rdlock(&cls->rwlock);
+ rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target,
+ priority));
+ ovs_rwlock_unlock(&cls->rwlock);
if (!rule) {
/* No such rule -> success. */
return true;
return false;
} else {
/* Initiate deletion -> success. */
- struct ofopgroup *group = ofopgroup_create_unattached(ofproto);
- ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE);
- ovs_rwlock_wrlock(&rule->evict);
- oftable_remove_rule(rule);
- ofproto->ofproto_class->rule_destruct(rule);
- ofopgroup_submit(group);
+ ovs_rwlock_wrlock(&cls->rwlock);
+ ofproto_delete_rule(ofproto, cls, rule);
+ ovs_rwlock_unlock(&cls->rwlock);
+
return true;
}
static ofp_port_t
alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name)
{
- uint16_t max_ports = ofp_to_u16(ofproto->max_ports);
uint16_t port_idx;
port_idx = simap_get(&ofproto->ofp_requests, netdev_name);
- if (!port_idx) {
- port_idx = UINT16_MAX;
- }
+ port_idx = port_idx ? port_idx : UINT16_MAX;
- if (port_idx >= max_ports
+ if (port_idx >= ofproto->max_ports
|| bitmap_is_set(ofproto->ofp_port_ids, port_idx)) {
- uint16_t end_port_no = ofp_to_u16(ofproto->alloc_port_no);
- uint16_t alloc_port_no = end_port_no;
+ uint16_t end_port_no = ofproto->alloc_port_no;
/* Search for a free OpenFlow port number. We try not to
* immediately reuse them to prevent problems due to old
* flows. */
for (;;) {
- if (++alloc_port_no >= max_ports) {
- alloc_port_no = 0;
+ if (++ofproto->alloc_port_no >= ofproto->max_ports) {
+ ofproto->alloc_port_no = 0;
}
- if (!bitmap_is_set(ofproto->ofp_port_ids, alloc_port_no)) {
- port_idx = alloc_port_no;
- ofproto->alloc_port_no = u16_to_ofp(alloc_port_no);
+ if (!bitmap_is_set(ofproto->ofp_port_ids,
+ ofproto->alloc_port_no)) {
+ port_idx = ofproto->alloc_port_no;
break;
}
- if (alloc_port_no == end_port_no) {
+ if (ofproto->alloc_port_no == end_port_no) {
return OFPP_NONE;
}
}
static void
dealloc_ofp_port(const struct ofproto *ofproto, ofp_port_t ofp_port)
{
- if (ofp_to_u16(ofp_port) < ofp_to_u16(ofproto->max_ports)) {
+ if (ofp_to_u16(ofp_port) < ofproto->max_ports) {
bitmap_set0(ofproto->ofp_port_ids, ofp_to_u16(ofp_port));
}
}
pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN;
netdev_get_features(netdev, &pp->curr, &pp->advertised,
&pp->supported, &pp->peer);
- pp->curr_speed = netdev_features_to_bps(pp->curr, 0);
- pp->max_speed = netdev_features_to_bps(pp->supported, 0);
+ pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
+ pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
return netdev;
}
netdev = ofport_open(p, &ofproto_port, &pp);
if (netdev) {
ofport_install(p, netdev, &pp);
+ if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) {
+ p->alloc_port_no = MAX(p->alloc_port_no,
+ ofp_to_u16(ofproto_port.ofp_port));
+ }
}
}
}
ofproto_rule_destroy__(struct rule *rule)
{
if (rule) {
+ rule->ofproto->ofproto_class->rule_destruct(rule);
cls_rule_destroy(&rule->cr);
free(rule->ofpacts);
ovs_mutex_destroy(&rule->timeout_mutex);
- ovs_rwlock_destroy(&rule->evict);
+ ovs_rwlock_destroy(&rule->rwlock);
rule->ofproto->ofproto_class->rule_dealloc(rule);
}
}
/* This function allows an ofproto implementation to destroy any rules that
- * remain when its ->destruct() function is called. The caller must have
- * already uninitialized any derived members of 'rule' (step 5 described in the
- * large comment in ofproto/ofproto-provider.h titled "Life Cycle").
- * This function implements steps 6 and 7.
+ * remain when its ->destruct() function is called.. This function implements
+ * steps 4.4 and 4.5 in the section titled "Rule Life Cycle" in
+ * ofproto-provider.h.
*
* This function should only be called from an ofproto implementation's
* ->destruct() function. It is not suitable elsewhere. */
void
-ofproto_rule_destroy(struct ofproto *ofproto, struct classifier *cls,
- struct rule *rule) OVS_REQ_WRLOCK(cls->rwlock)
+ofproto_rule_delete(struct ofproto *ofproto, struct classifier *cls,
+ struct rule *rule)
+ OVS_REQ_WRLOCK(cls->rwlock)
{
- ovs_assert(!rule->pending);
- if (!ovs_rwlock_trywrlock(&rule->evict)) {
- oftable_remove_rule__(ofproto, cls, rule);
- } else {
- NOT_REACHED();
- }
- ofproto_rule_destroy__(rule);
+ ofproto_delete_rule(ofproto, cls, rule);
}
/* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
|| ofpacts_output_to_port(rule->ofpacts, rule->ofpacts_len, port));
}
+/* Returns true if 'rule' has group and equals group_id. */
+bool
+ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id)
+{
+ return (group_id == OFPG11_ANY
+ || ofpacts_output_to_group(rule->ofpacts, rule->ofpacts_len, group_id));
+}
+
/* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or
* OFPAT_ENQUEUE action that outputs to 'out_port'. */
bool
switch (op->type) {
case OFOPERATION_ADD:
- return op->victim && ofproto_rule_has_out_port(op->victim, out_port);
-
case OFOPERATION_DELETE:
return false;
case OFOPERATION_MODIFY:
+ case OFOPERATION_REPLACE:
return ofpacts_output_to_port(op->ofpacts, op->ofpacts_len, out_port);
}
}
/* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s
- * statistics appropriately. 'packet' must have at least sizeof(struct
- * ofp10_packet_in) bytes of headroom.
+ * statistics appropriately.
*
* 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited
* with statistics for 'packet' either way.
struct flow flow;
union flow_in_port in_port_;
- ovs_assert(ofpbuf_headroom(packet) >= sizeof(struct ofp10_packet_in));
-
in_port_.ofp_port = in_port;
flow_extract(packet, 0, 0, NULL, &in_port_, &flow);
return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet);
enum ofperr error;
uint32_t mid;
- error = ofpacts_check(ofpacts, ofpacts_len, flow, ofproto->max_ports,
- table_id);
+ error = ofpacts_check(ofpacts, ofpacts_len, flow,
+ u16_to_ofp(ofproto->max_ports), table_id);
if (error) {
return error;
}
if (error) {
goto exit_free_ofpacts;
}
- if (ofp_to_u16(po.in_port) >= ofp_to_u16(p->max_ports)
+ if (ofp_to_u16(po.in_port) >= p->max_ports
&& ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) {
error = OFPERR_OFPBRC_BAD_PORT;
goto exit_free_ofpacts;
goto exit_free_ofpacts;
}
} else {
- payload = xmalloc(sizeof *payload);
- ofpbuf_use_const(payload, po.packet, po.packet_len);
+ /* Ensure that the L3 header is 32-bit aligned. */
+ payload = ofpbuf_clone_data_with_headroom(po.packet, po.packet_len, 2);
}
/* Verify actions against packet, then send packet if successful. */
if (new_cookie != rule->flow_cookie) {
cookies_remove(ofproto, rule);
+ ovs_rwlock_wrlock(&rule->rwlock);
rule->flow_cookie = new_cookie;
+ ovs_rwlock_unlock(&rule->rwlock);
cookies_insert(ofproto, rule);
}
collect_rules_loose(struct ofproto *ofproto, uint8_t table_id,
const struct match *match,
ovs_be64 cookie, ovs_be64 cookie_mask,
- ofp_port_t out_port, struct list *rules)
+ ofp_port_t out_port, uint32_t out_group,
+ struct list *rules)
{
struct oftable *table;
struct cls_rule cr;
}
if (!ofproto_rule_is_hidden(rule)
&& ofproto_rule_has_out_port(rule, out_port)
+ && ofproto_rule_has_out_group(rule, out_group)
&& !((rule->flow_cookie ^ cookie) & cookie_mask)) {
list_push_back(rules, &rule->ofproto_node);
}
collect_rules_strict(struct ofproto *ofproto, uint8_t table_id,
const struct match *match, unsigned int priority,
ovs_be64 cookie, ovs_be64 cookie_mask,
- ofp_port_t out_port, struct list *rules)
+ ofp_port_t out_port, uint32_t out_group,
+ struct list *rules)
{
struct oftable *table;
struct cls_rule cr;
}
if (!ofproto_rule_is_hidden(rule)
&& ofproto_rule_has_out_port(rule, out_port)
+ && ofproto_rule_has_out_group(rule, out_group)
&& !((rule->flow_cookie ^ cookie) & cookie_mask)) {
list_push_back(rules, &rule->ofproto_node);
}
error = collect_rules_loose(ofproto, fsr.table_id, &fsr.match,
fsr.cookie, fsr.cookie_mask,
- fsr.out_port, &rules);
+ fsr.out_port, fsr.out_group, &rules);
if (error) {
return error;
}
&fs.byte_count);
fs.ofpacts = rule->ofpacts;
fs.ofpacts_len = rule->ofpacts_len;
- fs.flags = 0;
ovs_mutex_lock(&rule->timeout_mutex);
fs.idle_timeout = rule->idle_timeout;
fs.hard_timeout = rule->hard_timeout;
ovs_mutex_unlock(&rule->timeout_mutex);
+ fs.flags = 0;
if (rule->send_flow_removed) {
- fs.flags |= OFPFF_SEND_FLOW_REM;
- /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS
- and OFPFF13_NO_BYT_COUNTS */
+ fs.flags |= OFPUTIL_FF_SEND_FLOW_REM;
+ /* FIXME: Implement OFPUTIL_FF_NO_PKT_COUNTS and
+ OFPUTIL_FF_NO_BYT_COUNTS. */
}
ofputil_append_flow_stats_reply(&fs, &replies);
}
error = collect_rules_loose(ofproto, request.table_id, &request.match,
request.cookie, request.cookie_mask,
- request.out_port, &rules);
+ request.out_port, request.out_group, &rules);
if (error) {
return error;
}
return false;
}
+static enum ofperr
+evict_rule_from_table(struct ofproto *ofproto, struct oftable *table)
+{
+ struct rule *rule;
+ size_t n_rules;
+
+ ovs_rwlock_rdlock(&table->cls.rwlock);
+ n_rules = classifier_count(&table->cls);
+ ovs_rwlock_unlock(&table->cls.rwlock);
+
+ if (n_rules < table->max_flows) {
+ return 0;
+ } else if (!choose_rule_to_evict(table, &rule)) {
+ return OFPERR_OFPFMFC_TABLE_FULL;
+ } else if (rule->pending) {
+ ovs_rwlock_unlock(&rule->rwlock);
+ return OFPROTO_POSTPONE;
+ } else {
+ struct ofopgroup *group;
+
+ group = ofopgroup_create_unattached(ofproto);
+ delete_flow__(rule, group, OFPRR_EVICTION);
+ ofopgroup_submit(group);
+
+ return 0;
+ }
+}
+
/* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
* in which no matching flow already exists in the flow table.
*
{
struct oftable *table;
struct ofopgroup *group;
- struct rule *victim;
+ struct cls_rule cr;
struct rule *rule;
uint8_t table_id;
- bool overlaps;
int error;
error = check_table_id(ofproto, fm->table_id);
return OFPERR_OFPBRC_EPERM;
}
+ cls_rule_init(&cr, &fm->match, fm->priority);
+
+ /* Transform "add" into "modify" if there's an existing identical flow. */
+ ovs_rwlock_rdlock(&table->cls.rwlock);
+ rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr));
+ ovs_rwlock_unlock(&table->cls.rwlock);
+ if (rule) {
+ cls_rule_destroy(&cr);
+ if (!rule_is_modifiable(rule)) {
+ return OFPERR_OFPBRC_EPERM;
+ } else if (rule->pending) {
+ return OFPROTO_POSTPONE;
+ } else {
+ struct list rules;
+
+ list_init(&rules);
+ list_push_back(&rules, &rule->ofproto_node);
+ fm->modify_cookie = true;
+ return modify_flows__(ofproto, ofconn, fm, request, &rules);
+ }
+ }
+
/* Verify actions. */
error = ofproto_check_ofpacts(ofproto, fm->ofpacts, fm->ofpacts_len,
&fm->match.flow, table_id);
if (error) {
+ cls_rule_destroy(&cr);
return error;
}
- /* Allocate new rule and initialize classifier rule. */
- rule = ofproto->ofproto_class->rule_alloc();
- if (!rule) {
- VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)",
- ofproto->name, ovs_strerror(error));
- return ENOMEM;
- }
- cls_rule_init(&rule->cr, &fm->match, fm->priority);
-
/* Serialize against pending deletion. */
- if (is_flow_deletion_pending(ofproto, &rule->cr, table_id)) {
- cls_rule_destroy(&rule->cr);
- ofproto->ofproto_class->rule_dealloc(rule);
+ if (is_flow_deletion_pending(ofproto, &cr, table_id)) {
+ cls_rule_destroy(&cr);
return OFPROTO_POSTPONE;
}
/* Check for overlap, if requested. */
- ovs_rwlock_rdlock(&table->cls.rwlock);
- overlaps = classifier_rule_overlaps(&table->cls, &rule->cr);
- ovs_rwlock_unlock(&table->cls.rwlock);
- if (fm->flags & OFPFF_CHECK_OVERLAP && overlaps) {
- cls_rule_destroy(&rule->cr);
- ofproto->ofproto_class->rule_dealloc(rule);
- return OFPERR_OFPFMFC_OVERLAP;
+ if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) {
+ bool overlaps;
+
+ ovs_rwlock_rdlock(&table->cls.rwlock);
+ overlaps = classifier_rule_overlaps(&table->cls, &cr);
+ ovs_rwlock_unlock(&table->cls.rwlock);
+
+ if (overlaps) {
+ cls_rule_destroy(&cr);
+ return OFPERR_OFPFMFC_OVERLAP;
+ }
+ }
+
+ /* If necessary, evict an existing rule to clear out space. */
+ error = evict_rule_from_table(ofproto, table);
+ if (error) {
+ cls_rule_destroy(&cr);
+ return error;
}
- /* FIXME: Implement OFPFF12_RESET_COUNTS */
+ /* Allocate new rule. */
+ rule = ofproto->ofproto_class->rule_alloc();
+ if (!rule) {
+ cls_rule_destroy(&cr);
+ VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)",
+ ofproto->name, ovs_strerror(error));
+ return ENOMEM;
+ }
+ /* Initialize base state. */
rule->ofproto = ofproto;
+ cls_rule_move(&rule->cr, &cr);
rule->pending = NULL;
rule->flow_cookie = fm->new_cookie;
rule->created = rule->modified = rule->used = time_msec();
- ovs_mutex_init(&rule->timeout_mutex, OVS_MUTEX_ADAPTIVE);
+ ovs_mutex_init(&rule->timeout_mutex);
ovs_mutex_lock(&rule->timeout_mutex);
rule->idle_timeout = fm->idle_timeout;
rule->hard_timeout = fm->hard_timeout;
ovs_mutex_unlock(&rule->timeout_mutex);
rule->table_id = table - ofproto->tables;
- rule->send_flow_removed = (fm->flags & OFPFF_SEND_FLOW_REM) != 0;
- /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS
- and OFPFF13_NO_BYT_COUNTS */
+ rule->send_flow_removed = (fm->flags & OFPUTIL_FF_SEND_FLOW_REM) != 0;
rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len);
rule->ofpacts_len = fm->ofpacts_len;
rule->meter_id = find_meter(rule->ofpacts, rule->ofpacts_len);
rule->monitor_flags = 0;
rule->add_seqno = 0;
rule->modify_seqno = 0;
- ovs_rwlock_init(&rule->evict);
-
- /* Insert new rule. */
- victim = oftable_replace_rule(rule);
- if (victim && !rule_is_modifiable(victim)) {
- error = OFPERR_OFPBRC_EPERM;
- } else if (victim && victim->pending) {
- error = OFPROTO_POSTPONE;
- } else {
- struct ofoperation *op;
- struct rule *evict;
- size_t n_rules;
+ ovs_rwlock_init(&rule->rwlock);
- ovs_rwlock_rdlock(&table->cls.rwlock);
- n_rules = classifier_count(&table->cls);
- ovs_rwlock_unlock(&table->cls.rwlock);
- if (n_rules > table->max_flows) {
- ovs_rwlock_rdlock(&rule->evict);
- if (choose_rule_to_evict(table, &evict)) {
- ovs_rwlock_unlock(&rule->evict);
- ovs_rwlock_unlock(&evict->evict);
- if (evict->pending) {
- error = OFPROTO_POSTPONE;
- goto exit;
- }
- } else {
- ovs_rwlock_unlock(&rule->evict);
- error = OFPERR_OFPFMFC_TABLE_FULL;
- goto exit;
- }
- } else {
- evict = NULL;
- }
-
- group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id);
- op = ofoperation_create(group, rule, OFOPERATION_ADD, 0);
- op->victim = victim;
-
- error = ofproto->ofproto_class->rule_construct(rule);
- if (error) {
- op->group->n_running--;
- ofoperation_destroy(rule->pending);
- } else if (evict) {
- /* It would be better if we maintained the lock we took in
- * choose_rule_to_evict() earlier, but that confuses the thread
- * safety analysis, and this code is fragile enough that we really
- * need it. In the worst case, we'll have to block a little while
- * before we perform the eviction, which doesn't seem like a big
- * problem. */
- ovs_rwlock_wrlock(&evict->evict);
- delete_flow__(evict, group, OFPRR_EVICTION);
- }
- ofopgroup_submit(group);
- }
-
-exit:
- /* Back out if an error occurred. */
+ /* Construct rule, initializing derived state. */
+ error = ofproto->ofproto_class->rule_construct(rule);
if (error) {
- oftable_substitute_rule(rule, victim);
ofproto_rule_destroy__(rule);
+ return error;
}
+
+ /* Insert rule. */
+ oftable_insert_rule(rule);
+
+ group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id);
+ ofoperation_create(group, rule, OFOPERATION_ADD, 0);
+ ofproto->ofproto_class->rule_insert(rule);
+ ofopgroup_submit(group);
+
return error;
}
\f
struct ofputil_flow_mod *fm, const struct ofp_header *request,
struct list *rules)
{
+ enum ofoperation_type type;
struct ofopgroup *group;
struct rule *rule;
enum ofperr error;
+ type = fm->command == OFPFC_ADD ? OFOPERATION_REPLACE : OFOPERATION_MODIFY;
group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id);
error = OFPERR_OFPBRC_EPERM;
LIST_FOR_EACH (rule, ofproto_node, rules) {
struct ofoperation *op;
bool actions_changed;
+ bool reset_counters;
- /* FIXME: Implement OFPFF12_RESET_COUNTS */
+ /* FIXME: Implement OFPFUTIL_FF_RESET_COUNTS */
if (rule_is_modifiable(rule)) {
/* At least one rule is modifiable, don't report EPERM error. */
/* Verify actions. */
error = ofpacts_check(fm->ofpacts, fm->ofpacts_len, &fm->match.flow,
- ofproto->max_ports, rule->table_id);
+ u16_to_ofp(ofproto->max_ports), rule->table_id);
if (error) {
return error;
}
actions_changed = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len,
rule->ofpacts, rule->ofpacts_len);
- op = ofoperation_create(group, rule, OFOPERATION_MODIFY, 0);
+ op = ofoperation_create(group, rule, type, 0);
if (fm->modify_cookie && fm->new_cookie != htonll(UINT64_MAX)) {
ofproto_rule_change_cookie(ofproto, rule, fm->new_cookie);
}
- if (actions_changed) {
+ if (type == OFOPERATION_REPLACE) {
+ ovs_mutex_lock(&rule->timeout_mutex);
+ rule->idle_timeout = fm->idle_timeout;
+ rule->hard_timeout = fm->hard_timeout;
+ ovs_mutex_unlock(&rule->timeout_mutex);
+
+ rule->send_flow_removed = (fm->flags
+ & OFPUTIL_FF_SEND_FLOW_REM) != 0;
+
+ if (fm->idle_timeout || fm->hard_timeout) {
+ if (!rule->eviction_group) {
+ eviction_group_add_rule(rule);
+ }
+ } else {
+ eviction_group_remove_rule(rule);
+ }
+ }
+
+ reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0;
+ if (actions_changed || reset_counters) {
op->ofpacts = rule->ofpacts;
op->ofpacts_len = rule->ofpacts_len;
op->meter_id = rule->meter_id;
+
+ ovs_rwlock_wrlock(&rule->rwlock);
rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len);
rule->ofpacts_len = fm->ofpacts_len;
+ ovs_rwlock_unlock(&rule->rwlock);
+
rule->meter_id = find_meter(rule->ofpacts, rule->ofpacts_len);
- rule->ofproto->ofproto_class->rule_modify_actions(rule);
+ rule->ofproto->ofproto_class->rule_modify_actions(rule,
+ reset_counters);
} else {
ofoperation_complete(op, 0);
}
error = collect_rules_loose(ofproto, fm->table_id, &fm->match,
fm->cookie, fm->cookie_mask,
- OFPP_ANY, &rules);
+ OFPP_ANY, OFPG11_ANY, &rules);
if (error) {
return error;
} else if (list_is_empty(&rules)) {
error = collect_rules_strict(ofproto, fm->table_id, &fm->match,
fm->priority, fm->cookie, fm->cookie_mask,
- OFPP_ANY, &rules);
-
+ OFPP_ANY, OFPG11_ANY, &rules);
if (error) {
return error;
} else if (list_is_empty(&rules)) {
ofoperation_create(group, rule, OFOPERATION_DELETE, reason);
oftable_remove_rule(rule);
- ofproto->ofproto_class->rule_destruct(rule);
+ ofproto->ofproto_class->rule_delete(rule);
}
/* Deletes the rules listed in 'rules'.
group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX);
LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) {
- ovs_rwlock_wrlock(&rule->evict);
+ ovs_rwlock_wrlock(&rule->rwlock);
delete_flow__(rule, group, reason);
}
ofopgroup_submit(group);
error = collect_rules_loose(ofproto, fm->table_id, &fm->match,
fm->cookie, fm->cookie_mask,
- fm->out_port, &rules);
+ fm->out_port, fm->out_group, &rules);
return (error ? error
: !list_is_empty(&rules) ? delete_flows__(ofproto, ofconn, request,
&rules, OFPRR_DELETE)
error = collect_rules_strict(ofproto, fm->table_id, &fm->match,
fm->priority, fm->cookie, fm->cookie_mask,
- fm->out_port, &rules);
+ fm->out_port, fm->out_group, &rules);
return (error ? error
: list_is_singleton(&rules) ? delete_flows__(ofproto, ofconn,
request, &rules,
connmgr_send_flow_removed(rule->ofproto->connmgr, &fr);
}
-void
-ofproto_rule_update_used(struct rule *rule, long long int used)
-{
- if (used > rule->used) {
- struct eviction_group *evg = rule->eviction_group;
-
- rule->used = used;
- if (evg) {
- heap_change(&evg->rules, &rule->evg_node,
- rule_eviction_priority(rule));
- }
- }
-}
-
/* Sends an OpenFlow "flow removed" message with the given 'reason' (either
* OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
* ofproto.
ofproto_rule_expire(struct rule *rule, uint8_t reason)
{
struct ofproto *ofproto = rule->ofproto;
- struct ofopgroup *group;
-
- ovs_assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT);
+ struct classifier *cls = &ofproto->tables[rule->table_id].cls;
+ ovs_assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT
+ || reason == OFPRR_DELETE || reason == OFPRR_GROUP_DELETE);
ofproto_rule_send_removed(rule, reason);
- group = ofopgroup_create_unattached(ofproto);
- ofoperation_create(group, rule, OFOPERATION_DELETE, reason);
- oftable_remove_rule(rule);
- ofproto->ofproto_class->rule_destruct(rule);
- ofopgroup_submit(group);
+ ovs_rwlock_wrlock(&cls->rwlock);
+ ofproto_delete_rule(ofproto, cls, rule);
+ ovs_rwlock_unlock(&cls->rwlock);
+}
+
+/* Reduces '*timeout' to no more than 'max'. A value of zero in either case
+ * means "infinite". */
+static void
+reduce_timeout(uint16_t max, uint16_t *timeout)
+{
+ if (max && (!*timeout || *timeout > max)) {
+ *timeout = max;
+ }
+}
+
+/* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle
+ * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to
+ * 'idle_timeout' seconds. Similarly for 'hard_timeout'.
+ *
+ * Suitable for implementing OFPACT_FIN_TIMEOUT. */
+void
+ofproto_rule_reduce_timeouts(struct rule *rule,
+ uint16_t idle_timeout, uint16_t hard_timeout)
+ OVS_EXCLUDED(rule->ofproto->expirable_mutex, rule->timeout_mutex)
+{
+ if (!idle_timeout && !hard_timeout) {
+ return;
+ }
+
+ ovs_mutex_lock(&rule->ofproto->expirable_mutex);
+ if (list_is_empty(&rule->expirable)) {
+ list_insert(&rule->ofproto->expirable, &rule->expirable);
+ }
+ ovs_mutex_unlock(&rule->ofproto->expirable_mutex);
+
+ ovs_mutex_lock(&rule->timeout_mutex);
+ reduce_timeout(idle_timeout, &rule->idle_timeout);
+ reduce_timeout(hard_timeout, &rule->hard_timeout);
+ ovs_mutex_unlock(&rule->timeout_mutex);
}
\f
static enum ofperr
return 0;
}
+static enum ofperr
+handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh)
+{
+ struct ofpbuf *buf;
+ uint32_t master[OAM_N_TYPES];
+ uint32_t slave[OAM_N_TYPES];
+ struct nx_async_config *msg;
+
+ ofconn_get_async_config(ofconn, master, slave);
+ buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0);
+ msg = ofpbuf_put_zeros(buf, sizeof *msg);
+
+ msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]);
+ msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]);
+ msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]);
+
+ msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]);
+ msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]);
+ msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]);
+
+ ofconn_send_reply(ofconn, buf);
+
+ return 0;
+}
+
static enum ofperr
handle_nxt_set_controller_id(struct ofconn *ofconn,
const struct ofp_header *oh)
struct ofputil_flow_update fu;
struct match match;
- if (op && op->type == OFOPERATION_ADD && !op->victim) {
+ if (op && op->type == OFOPERATION_ADD) {
/* We'll report the final flow when the operation completes. Reporting
* it now would cause a duplicate report later. */
return;
* actions, so that when the operation commits we report the change. */
switch (op->type) {
case OFOPERATION_ADD:
- /* We already verified that there was a victim. */
- fu.ofpacts = op->victim->ofpacts;
- fu.ofpacts_len = op->victim->ofpacts_len;
- break;
+ NOT_REACHED();
case OFOPERATION_MODIFY:
+ case OFOPERATION_REPLACE:
if (op->ofpacts) {
fu.ofpacts = op->ofpacts;
fu.ofpacts_len = op->ofpacts_len;
return 0;
}
+bool
+ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id,
+ struct ofgroup **group)
+ OVS_TRY_RDLOCK(true, (*group)->rwlock)
+{
+ ovs_rwlock_rdlock(&ofproto->groups_rwlock);
+ HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node,
+ hash_int(group_id, 0), &ofproto->groups) {
+ if ((*group)->group_id == group_id) {
+ ovs_rwlock_rdlock(&(*group)->rwlock);
+ ovs_rwlock_unlock(&ofproto->groups_rwlock);
+ return true;
+ }
+ }
+ ovs_rwlock_unlock(&ofproto->groups_rwlock);
+ return false;
+}
+
+void
+ofproto_group_release(struct ofgroup *group)
+ OVS_RELEASES(group->rwlock)
+{
+ ovs_rwlock_unlock(&group->rwlock);
+}
+
+static bool
+ofproto_group_write_lookup(const struct ofproto *ofproto, uint32_t group_id,
+ struct ofgroup **group)
+ OVS_TRY_WRLOCK(true, ofproto->groups_rwlock)
+ OVS_TRY_WRLOCK(true, (*group)->rwlock)
+{
+ ovs_rwlock_wrlock(&ofproto->groups_rwlock);
+ HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node,
+ hash_int(group_id, 0), &ofproto->groups) {
+ if ((*group)->group_id == group_id) {
+ ovs_rwlock_wrlock(&(*group)->rwlock);
+ return true;
+ }
+ }
+ ovs_rwlock_unlock(&ofproto->groups_rwlock);
+ return false;
+}
+
+static bool
+ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id)
+ OVS_REQ_RDLOCK(ofproto->groups_rwlock)
+{
+ struct ofgroup *grp;
+
+ HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node,
+ hash_int(group_id, 0), &ofproto->groups) {
+ if (grp->group_id == group_id) {
+ return true;
+ }
+ }
+ return false;
+}
+
+static void
+append_group_stats(struct ofgroup *group, struct list *replies)
+ OVS_REQ_RDLOCK(group->rwlock)
+{
+ struct ofputil_group_stats ogs;
+ struct ofproto *ofproto = group->ofproto;
+ long long int now = time_msec();
+ int error;
+
+ ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats);
+
+ error = (ofproto->ofproto_class->group_get_stats
+ ? ofproto->ofproto_class->group_get_stats(group, &ogs)
+ : EOPNOTSUPP);
+ if (error) {
+ ogs.ref_count = UINT32_MAX;
+ ogs.packet_count = UINT64_MAX;
+ ogs.byte_count = UINT64_MAX;
+ ogs.n_buckets = group->n_buckets;
+ memset(ogs.bucket_stats, 0xff,
+ ogs.n_buckets * sizeof *ogs.bucket_stats);
+ }
+
+ ogs.group_id = group->group_id;
+ calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec);
+
+ ofputil_append_group_stats(replies, &ogs);
+
+ free(ogs.bucket_stats);
+}
+
+static enum ofperr
+handle_group_stats_request(struct ofconn *ofconn,
+ const struct ofp_header *request)
+{
+ struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
+ struct list replies;
+ enum ofperr error;
+ struct ofgroup *group;
+ uint32_t group_id;
+
+ error = ofputil_decode_group_stats_request(request, &group_id);
+ if (error) {
+ return error;
+ }
+
+ ofpmp_init(&replies, request);
+
+ if (group_id == OFPG_ALL) {
+ ovs_rwlock_rdlock(&ofproto->groups_rwlock);
+ HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) {
+ ovs_rwlock_rdlock(&group->rwlock);
+ append_group_stats(group, &replies);
+ ovs_rwlock_unlock(&group->rwlock);
+ }
+ ovs_rwlock_unlock(&ofproto->groups_rwlock);
+ } else {
+ if (ofproto_group_lookup(ofproto, group_id, &group)) {
+ append_group_stats(group, &replies);
+ ofproto_group_release(group);
+ }
+ }
+
+ ofconn_send_replies(ofconn, &replies);
+
+ return 0;
+}
+
+static enum ofperr
+handle_group_desc_stats_request(struct ofconn *ofconn,
+ const struct ofp_header *request)
+{
+ struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
+ struct list replies;
+ struct ofputil_group_desc gds;
+ struct ofgroup *group;
+
+ ofpmp_init(&replies, request);
+
+ ovs_rwlock_rdlock(&ofproto->groups_rwlock);
+ HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) {
+ gds.group_id = group->group_id;
+ gds.type = group->type;
+ ofputil_append_group_desc_reply(&gds, &group->buckets, &replies);
+ }
+ ovs_rwlock_unlock(&ofproto->groups_rwlock);
+
+ ofconn_send_replies(ofconn, &replies);
+
+ return 0;
+}
+
+static enum ofperr
+handle_group_features_stats_request(struct ofconn *ofconn,
+ const struct ofp_header *request)
+{
+ struct ofproto *p = ofconn_get_ofproto(ofconn);
+ struct ofpbuf *msg;
+
+ msg = ofputil_encode_group_features_reply(&p->ogf, request);
+ if (msg) {
+ ofconn_send_reply(ofconn, msg);
+ }
+
+ return 0;
+}
+
+/* Implements OFPGC11_ADD
+ * in which no matching flow already exists in the flow table.
+ *
+ * Adds the flow specified by 'ofm', which is followed by 'n_actions'
+ * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
+ * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
+ * initiated now but may be retried later.
+ *
+ * Upon successful return, takes ownership of 'fm->ofpacts'. On failure,
+ * ownership remains with the caller.
+ *
+ * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
+ * if any. */
+static enum ofperr
+add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
+{
+ struct ofgroup *ofgroup;
+ enum ofperr error;
+
+ if (gm->group_id > OFPG_MAX) {
+ return OFPERR_OFPGMFC_INVALID_GROUP;
+ }
+ if (gm->type > OFPGT11_FF) {
+ return OFPERR_OFPGMFC_BAD_TYPE;
+ }
+
+ /* Allocate new group and initialize it. */
+ ofgroup = ofproto->ofproto_class->group_alloc();
+ if (!ofgroup) {
+ VLOG_WARN_RL(&rl, "%s: failed to create group", ofproto->name);
+ return OFPERR_OFPGMFC_OUT_OF_GROUPS;
+ }
+
+ ovs_rwlock_init(&ofgroup->rwlock);
+ ofgroup->ofproto = ofproto;
+ ofgroup->group_id = gm->group_id;
+ ofgroup->type = gm->type;
+ ofgroup->created = ofgroup->modified = time_msec();
+
+ list_move(&ofgroup->buckets, &gm->buckets);
+ ofgroup->n_buckets = list_size(&ofgroup->buckets);
+
+ /* Construct called BEFORE any locks are held. */
+ error = ofproto->ofproto_class->group_construct(ofgroup);
+ if (error) {
+ goto free_out;
+ }
+
+ /* We wrlock as late as possible to minimize the time we jam any other
+ * threads: No visible state changes before acquiring the lock. */
+ ovs_rwlock_wrlock(&ofproto->groups_rwlock);
+
+ if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
+ error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
+ goto unlock_out;
+ }
+
+ if (ofproto_group_exists(ofproto, gm->group_id)) {
+ error = OFPERR_OFPGMFC_GROUP_EXISTS;
+ goto unlock_out;
+ }
+
+ if (!error) {
+ /* Insert new group. */
+ hmap_insert(&ofproto->groups, &ofgroup->hmap_node,
+ hash_int(ofgroup->group_id, 0));
+ ofproto->n_groups[ofgroup->type]++;
+
+ ovs_rwlock_unlock(&ofproto->groups_rwlock);
+ return error;
+ }
+
+ unlock_out:
+ ovs_rwlock_unlock(&ofproto->groups_rwlock);
+ ofproto->ofproto_class->group_destruct(ofgroup);
+ free_out:
+ ofputil_bucket_list_destroy(&ofgroup->buckets);
+ ofproto->ofproto_class->group_dealloc(ofgroup);
+
+ return error;
+}
+
+/* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
+ * failure.
+ *
+ * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
+ * if any. */
+static enum ofperr
+modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
+{
+ struct ofgroup *ofgroup;
+ struct ofgroup *victim;
+ enum ofperr error;
+
+ if (gm->group_id > OFPG_MAX) {
+ return OFPERR_OFPGMFC_INVALID_GROUP;
+ }
+
+ if (gm->type > OFPGT11_FF) {
+ return OFPERR_OFPGMFC_BAD_TYPE;
+ }
+
+ victim = ofproto->ofproto_class->group_alloc();
+ if (!victim) {
+ VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name);
+ return OFPERR_OFPGMFC_OUT_OF_GROUPS;
+ }
+
+ if (!ofproto_group_write_lookup(ofproto, gm->group_id, &ofgroup)) {
+ error = OFPERR_OFPGMFC_UNKNOWN_GROUP;
+ goto free_out;
+ }
+ /* Both group's and its container's write locks held now.
+ * Also, n_groups[] is protected by ofproto->groups_rwlock. */
+ if (ofgroup->type != gm->type
+ && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
+ error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
+ goto unlock_out;
+ }
+
+ *victim = *ofgroup;
+ list_move(&victim->buckets, &ofgroup->buckets);
+
+ ofgroup->type = gm->type;
+ list_move(&ofgroup->buckets, &gm->buckets);
+ ofgroup->n_buckets = list_size(&ofgroup->buckets);
+
+ error = ofproto->ofproto_class->group_modify(ofgroup, victim);
+ if (!error) {
+ ofputil_bucket_list_destroy(&victim->buckets);
+ ofproto->n_groups[victim->type]--;
+ ofproto->n_groups[ofgroup->type]++;
+ ofgroup->modified = time_msec();
+ } else {
+ ofputil_bucket_list_destroy(&ofgroup->buckets);
+
+ *ofgroup = *victim;
+ list_move(&ofgroup->buckets, &victim->buckets);
+ }
+
+ unlock_out:
+ ovs_rwlock_unlock(&ofgroup->rwlock);
+ ovs_rwlock_unlock(&ofproto->groups_rwlock);
+ free_out:
+ ofproto->ofproto_class->group_dealloc(victim);
+ return error;
+}
+
+static void
+delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup)
+ OVS_RELEASES(ofproto->groups_rwlock)
+{
+ /* Must wait until existing readers are done,
+ * while holding the container's write lock at the same time. */
+ ovs_rwlock_wrlock(&ofgroup->rwlock);
+ hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
+ /* No-one can find this group any more. */
+ ofproto->n_groups[ofgroup->type]--;
+ ovs_rwlock_unlock(&ofproto->groups_rwlock);
+
+ ofproto->ofproto_class->group_destruct(ofgroup);
+ ofputil_bucket_list_destroy(&ofgroup->buckets);
+ ovs_rwlock_unlock(&ofgroup->rwlock);
+ ovs_rwlock_destroy(&ofgroup->rwlock);
+ ofproto->ofproto_class->group_dealloc(ofgroup);
+}
+
+/* Implements OFPGC_DELETE. */
+static void
+delete_group(struct ofproto *ofproto, uint32_t group_id)
+{
+ struct ofgroup *ofgroup;
+
+ ovs_rwlock_wrlock(&ofproto->groups_rwlock);
+ if (group_id == OFPG_ALL) {
+ for (;;) {
+ struct hmap_node *node = hmap_first(&ofproto->groups);
+ if (!node) {
+ break;
+ }
+ ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node);
+ delete_group__(ofproto, ofgroup);
+ /* Lock for each node separately, so that we will not jam the
+ * other threads for too long time. */
+ ovs_rwlock_wrlock(&ofproto->groups_rwlock);
+ }
+ } else {
+ HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node,
+ hash_int(group_id, 0), &ofproto->groups) {
+ if (ofgroup->group_id == group_id) {
+ delete_group__(ofproto, ofgroup);
+ return;
+ }
+ }
+ }
+ ovs_rwlock_unlock(&ofproto->groups_rwlock);
+}
+
+static enum ofperr
+handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh)
+{
+ struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
+ struct ofputil_group_mod gm;
+ enum ofperr error;
+
+ error = reject_slave_controller(ofconn);
+ if (error) {
+ return error;
+ }
+
+ error = ofputil_decode_group_mod(oh, &gm);
+ if (error) {
+ return error;
+ }
+
+ switch (gm.command) {
+ case OFPGC11_ADD:
+ return add_group(ofproto, &gm);
+
+ case OFPGC11_MODIFY:
+ return modify_group(ofproto, &gm);
+
+ case OFPGC11_DELETE:
+ delete_group(ofproto, gm.group_id);
+ return 0;
+
+ default:
+ if (gm.command > OFPGC11_DELETE) {
+ VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d",
+ ofproto->name, gm.command);
+ }
+ return OFPERR_OFPGMFC_BAD_COMMAND;
+ }
+}
+
+static enum ofperr
+handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh)
+{
+ struct ofputil_table_mod tm;
+ enum ofperr error;
+
+ error = reject_slave_controller(ofconn);
+ if (error) {
+ return error;
+ }
+
+ error = ofputil_decode_table_mod(oh, &tm);
+ if (error) {
+ return error;
+ }
+
+ /* XXX Actual table mod support is not implemented yet. */
+ return 0;
+}
+
static enum ofperr
handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
{
case OFPTYPE_FLOW_MOD:
return handle_flow_mod(ofconn, oh);
+ case OFPTYPE_GROUP_MOD:
+ return handle_group_mod(ofconn, oh);
+
+ case OFPTYPE_TABLE_MOD:
+ return handle_table_mod(ofconn, oh);
+
case OFPTYPE_METER_MOD:
return handle_meter_mod(ofconn, oh);
case OFPTYPE_SET_ASYNC_CONFIG:
return handle_nxt_set_async_config(ofconn, oh);
+ case OFPTYPE_GET_ASYNC_REQUEST:
+ return handle_nxt_get_async_request(ofconn, oh);
+
/* Statistics requests. */
case OFPTYPE_DESC_STATS_REQUEST:
return handle_desc_stats_request(ofconn, oh);
case OFPTYPE_METER_FEATURES_STATS_REQUEST:
return handle_meter_features_request(ofconn, oh);
- /* FIXME: Change the following once they are implemented: */
- case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
- case OFPTYPE_GET_ASYNC_REQUEST:
case OFPTYPE_GROUP_STATS_REQUEST:
+ return handle_group_stats_request(ofconn, oh);
+
case OFPTYPE_GROUP_DESC_STATS_REQUEST:
+ return handle_group_desc_stats_request(ofconn, oh);
+
case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
+ return handle_group_features_stats_request(ofconn, oh);
+
+ /* FIXME: Change the following once they are implemented: */
+ case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
return OFPERR_OFPBRC_BAD_TYPE;
&& rule->flow_cookie == op->flow_cookie))) {
/* Check that we can just cast from ofoperation_type to
* nx_flow_update_event. */
- BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_ADD
- == NXFME_ADDED);
- BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_DELETE
- == NXFME_DELETED);
- BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_MODIFY
- == NXFME_MODIFIED);
-
- ofmonitor_report(ofproto->connmgr, rule,
- (enum nx_flow_update_event) op->type,
+ enum nx_flow_update_event event_type;
+
+ switch (op->type) {
+ case OFOPERATION_ADD:
+ case OFOPERATION_REPLACE:
+ event_type = NXFME_ADDED;
+ break;
+
+ case OFOPERATION_DELETE:
+ event_type = NXFME_DELETED;
+ break;
+
+ case OFOPERATION_MODIFY:
+ event_type = NXFME_MODIFIED;
+ break;
+
+ default:
+ NOT_REACHED();
+ }
+
+ ofmonitor_report(ofproto->connmgr, rule, event_type,
op->reason, abbrev_ofconn, abbrev_xid);
}
if (!op->error) {
uint16_t vid_mask;
- ofproto_rule_destroy__(op->victim);
vid_mask = minimask_get_vid_mask(&rule->cr.match.mask);
if (vid_mask == VLAN_VID_MASK) {
if (ofproto->vlan_bitmap) {
}
}
} else {
- oftable_substitute_rule(rule, op->victim);
+ ovs_rwlock_wrlock(&rule->rwlock);
+ oftable_remove_rule(rule);
ofproto_rule_destroy__(rule);
}
break;
break;
case OFOPERATION_MODIFY:
+ case OFOPERATION_REPLACE:
if (!op->error) {
- rule->modified = time_msec();
+ long long int now = time_msec();
+
+ rule->modified = now;
+ if (op->type == OFOPERATION_REPLACE) {
+ rule->created = rule->used = now;
+ }
} else {
ofproto_rule_change_cookie(ofproto, rule, op->flow_cookie);
+ ovs_mutex_lock(&rule->timeout_mutex);
+ rule->idle_timeout = op->idle_timeout;
+ rule->hard_timeout = op->hard_timeout;
+ ovs_mutex_unlock(&rule->timeout_mutex);
if (op->ofpacts) {
free(rule->ofpacts);
+
+ ovs_rwlock_wrlock(&rule->rwlock);
rule->ofpacts = op->ofpacts;
rule->ofpacts_len = op->ofpacts_len;
+ ovs_rwlock_unlock(&rule->rwlock);
+
op->ofpacts = NULL;
op->ofpacts_len = 0;
}
+ rule->send_flow_removed = op->send_flow_removed;
}
break;
op->type = type;
op->reason = reason;
op->flow_cookie = rule->flow_cookie;
+ ovs_mutex_lock(&rule->timeout_mutex);
+ op->idle_timeout = rule->idle_timeout;
+ op->hard_timeout = rule->hard_timeout;
+ ovs_mutex_unlock(&rule->timeout_mutex);
+ op->send_flow_removed = rule->send_flow_removed;
group->n_running++;
* indicate success or an OpenFlow error code on failure.
*
* If 'error' is 0, indicating success, the operation will be committed
- * permanently to the flow table. There is one interesting subcase:
- *
- * - If 'op' is an "add flow" operation that is replacing an existing rule in
- * the flow table (the "victim" rule) by a new one, then the caller must
- * have uninitialized any derived state in the victim rule, as in step 5 in
- * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete()
- * performs steps 6 and 7 for the victim rule, most notably by calling its
- * ->rule_dealloc() function.
+ * permanently to the flow table.
*
* If 'error' is nonzero, then generally the operation will be rolled back:
*
ofopgroup_complete(group);
}
}
-
-struct rule *
-ofoperation_get_victim(struct ofoperation *op)
-{
- ovs_assert(op->type == OFOPERATION_ADD);
- return op->victim;
-}
\f
static uint64_t
pick_datapath_id(const struct ofproto *ofproto)
* group has no evictable rules.
*
* - The outer loop can exit only if table's 'max_flows' is all filled up
- * by unevictable rules'. */
+ * by unevictable rules. */
HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
struct rule *rule;
HEAP_FOR_EACH (rule, evg_node, &evg->rules) {
- if (!ovs_rwlock_trywrlock(&rule->evict)) {
+ if (!ovs_rwlock_trywrlock(&rule->rwlock)) {
*rulep = rule;
return true;
}
}
if (rule->pending) {
- ovs_rwlock_unlock(&rule->evict);
+ ovs_rwlock_unlock(&rule->rwlock);
break;
}
ofoperation_create(group, rule,
OFOPERATION_DELETE, OFPRR_EVICTION);
oftable_remove_rule(rule);
- ofproto->ofproto_class->rule_destruct(rule);
+ ofproto->ofproto_class->rule_delete(rule);
}
}
ofopgroup_submit(group);
/* Removes 'rule' from the oftable that contains it. */
static void
oftable_remove_rule__(struct ofproto *ofproto, struct classifier *cls,
- struct rule *rule) OVS_REQ_WRLOCK(cls->rwlock)
+ struct rule *rule)
+ OVS_REQ_WRLOCK(cls->rwlock) OVS_RELEASES(rule->rwlock)
{
classifier_remove(cls, &rule->cr);
- if (rule->meter_id) {
- list_remove(&rule->meter_list_node);
- }
cookies_remove(ofproto, rule);
eviction_group_remove_rule(rule);
ovs_mutex_lock(&ofproto->expirable_mutex);
ovs_mutex_unlock(&ofproto->expirable_mutex);
if (!list_is_empty(&rule->meter_list_node)) {
list_remove(&rule->meter_list_node);
+ list_init(&rule->meter_list_node);
}
- ovs_rwlock_unlock(&rule->evict);
+ ovs_rwlock_unlock(&rule->rwlock);
}
static void
ovs_rwlock_unlock(&table->cls.rwlock);
}
-/* Inserts 'rule' into its oftable. Removes any existing rule from 'rule''s
- * oftable that has an identical cls_rule. Returns the rule that was removed,
- * if any, and otherwise NULL. */
-static struct rule *
-oftable_replace_rule(struct rule *rule)
+/* Inserts 'rule' into its oftable, which must not already contain any rule for
+ * the same cls_rule. */
+static void
+oftable_insert_rule(struct rule *rule)
{
struct ofproto *ofproto = rule->ofproto;
struct oftable *table = &ofproto->tables[rule->table_id];
- struct rule *victim;
bool may_expire;
ovs_mutex_lock(&rule->timeout_mutex);
list_insert(&meter->rules, &rule->meter_list_node);
}
ovs_rwlock_wrlock(&table->cls.rwlock);
- victim = rule_from_cls_rule(classifier_replace(&table->cls, &rule->cr));
+ classifier_insert(&table->cls, &rule->cr);
ovs_rwlock_unlock(&table->cls.rwlock);
- if (victim) {
- if (victim->meter_id) {
- list_remove(&victim->meter_list_node);
- }
- cookies_remove(ofproto, victim);
-
- ovs_mutex_lock(&ofproto->expirable_mutex);
- if (!list_is_empty(&victim->expirable)) {
- list_remove(&victim->expirable);
- }
- ovs_mutex_unlock(&ofproto->expirable_mutex);
- eviction_group_remove_rule(victim);
- }
eviction_group_add_rule(rule);
- return victim;
-}
-
-/* Removes 'old' from its oftable then, if 'new' is nonnull, inserts 'new'. */
-static void
-oftable_substitute_rule(struct rule *old, struct rule *new)
-{
- if (new) {
- oftable_replace_rule(new);
- } else {
- ovs_rwlock_wrlock(&old->evict);
- oftable_remove_rule(old);
- }
}
\f
/* unixctl commands. */
git://git.onelab.eu / sliver-openvswitch.git / blobdiff