static void eviction_group_add_rule(struct rule *);
static void eviction_group_remove_rule(struct rule *);
+/* Criteria that flow_mod and other operations use for selecting rules on
+ * which to operate. */
+struct rule_criteria {
+ /* An OpenFlow table or 255 for all tables. */
+ uint8_t table_id;
+
+ /* OpenFlow matching criteria. Interpreted different in "loose" way by
+ * collect_rules_loose() and "strict" way by collect_rules_strict(), as
+ * defined in the OpenFlow spec. */
+ struct cls_rule cr;
+
+ /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's
+ * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'.
+ * The rule will not be selected if M is 1 and B != C. */
+ ovs_be64 cookie;
+ ovs_be64 cookie_mask;
+
+ /* Selection based on actions within a rule:
+ *
+ * If out_port != OFPP_ANY, selects only rules that output to out_port. */
+ ofp_port_t out_port;
+};
+
+static void rule_criteria_init(struct rule_criteria *, uint8_t table_id,
+ const struct match *match,
+ unsigned int priority,
+ ovs_be64 cookie, ovs_be64 cookie_mask,
+ ofp_port_t out_port);
+static void rule_criteria_destroy(struct rule_criteria *);
+
/* ofport. */
static void ofport_destroy__(struct ofport *);
static void ofport_destroy(struct ofport *);
const struct ofp_header *);
static enum ofperr modify_flows__(struct ofproto *, struct ofconn *,
struct ofputil_flow_mod *,
- const struct ofp_header *, struct list *);
+ const struct ofp_header *,
+ const struct rule_collection *);
static void delete_flow__(struct rule *rule, struct ofopgroup *,
enum ofp_flow_removed_reason)
OVS_RELEASES(rule->rwlock);
(TABLE) != NULL; \
(TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
+/* Initializes 'criteria' in a straightforward way based on the other
+ * parameters.
+ *
+ * For "loose" matching, the 'priority' parameter is unimportant and may be
+ * supplied as 0. */
+static void
+rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id,
+ const struct match *match, unsigned int priority,
+ ovs_be64 cookie, ovs_be64 cookie_mask,
+ ofp_port_t out_port)
+{
+ criteria->table_id = table_id;
+ cls_rule_init(&criteria->cr, match, priority);
+ criteria->cookie = cookie;
+ criteria->cookie_mask = cookie_mask;
+ criteria->out_port = out_port;
+}
+
+static void
+rule_criteria_destroy(struct rule_criteria *criteria)
+{
+ cls_rule_destroy(&criteria->cr);
+}
+
+void
+rule_collection_init(struct rule_collection *rules)
+{
+ rules->rules = rules->stub;
+ rules->n = 0;
+ rules->capacity = ARRAY_SIZE(rules->stub);
+}
+
+void
+rule_collection_add(struct rule_collection *rules, struct rule *rule)
+{
+ if (rules->n >= rules->capacity) {
+ size_t old_size, new_size;
+
+ old_size = rules->capacity * sizeof *rules->rules;
+ rules->capacity *= 2;
+ new_size = rules->capacity * sizeof *rules->rules;
+
+ if (rules->rules == rules->stub) {
+ rules->rules = xmalloc(new_size);
+ memcpy(rules->rules, rules->stub, old_size);
+ } else {
+ rules->rules = xrealloc(rules->rules, new_size);
+ }
+ }
+
+ rules->rules[rules->n++] = rule;
+}
+
+void
+rule_collection_destroy(struct rule_collection *rules)
+{
+ if (rules->rules != rules->stub) {
+ free(rules->rules);
+ }
+}
+
static enum ofperr
-collect_rule(struct rule *rule, uint8_t table_id,
- ovs_be64 cookie, ovs_be64 cookie_mask,
- ofp_port_t out_port, struct list *rules)
+collect_rule(struct rule *rule, const struct rule_criteria *c,
+ struct rule_collection *rules)
{
if (ofproto_rule_is_hidden(rule)) {
return 0;
} else if (rule->pending) {
return OFPROTO_POSTPONE;
} else {
- if ((table_id == rule->table_id || table_id == 0xff)
- && ofproto_rule_has_out_port(rule, out_port)
- && !((rule->flow_cookie ^ cookie) & cookie_mask)) {
- list_push_back(rules, &rule->ofproto_node);
+ if ((c->table_id == rule->table_id || c->table_id == 0xff)
+ && ofproto_rule_has_out_port(rule, c->out_port)
+ && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask)) {
+ rule_collection_add(rules, rule);
}
return 0;
}
}
-/* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if
- * 'table_id' is 0xff) that match 'match' in the "loose" way required for
- * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list
+/* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
+ * on classifiers rules are done in the "loose" way required for OpenFlow
+ * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list
* 'rules'.
*
- * If 'out_port' is anything other than OFPP_ANY, then only rules that output
- * to 'out_port' are included.
- *
* Hidden rules are always omitted.
*
* Returns 0 on success, otherwise an OpenFlow error code. */
static enum ofperr
-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)
+collect_rules_loose(struct ofproto *ofproto,
+ const struct rule_criteria *criteria,
+ struct rule_collection *rules)
{
struct oftable *table;
- struct cls_rule cr;
enum ofperr error;
- error = check_table_id(ofproto, table_id);
+ rule_collection_init(rules);
+
+ error = check_table_id(ofproto, criteria->table_id);
if (error) {
- return error;
+ goto exit;
}
- list_init(rules);
- cls_rule_init(&cr, match, 0);
-
- if (cookie_mask == htonll(UINT64_MAX)) {
+ if (criteria->cookie_mask == htonll(UINT64_MAX)) {
struct rule *rule;
- HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, hash_cookie(cookie),
+ HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
+ hash_cookie(criteria->cookie),
&ofproto->cookies) {
- if (cls_rule_is_loose_match(&rule->cr, &cr.match)) {
- error = collect_rule(rule, table_id, cookie, cookie_mask,
- out_port, rules);
+ if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) {
+ error = collect_rule(rule, criteria, rules);
if (error) {
break;
}
}
}
} else {
- FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) {
+ FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
struct cls_cursor cursor;
struct rule *rule;
ovs_rwlock_rdlock(&table->cls.rwlock);
- cls_cursor_init(&cursor, &table->cls, &cr);
+ cls_cursor_init(&cursor, &table->cls, &criteria->cr);
CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
- error = collect_rule(rule, table_id, cookie, cookie_mask,
- out_port, rules);
+ error = collect_rule(rule, criteria, rules);
if (error) {
break;
}
}
}
- cls_rule_destroy(&cr);
+exit:
+ if (error) {
+ rule_collection_destroy(rules);
+ }
return error;
}
-/* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if
- * 'table_id' is 0xff) that match 'match' in the "strict" way required for
- * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them
- * on list 'rules'.
- *
- * If 'out_port' is anything other than OFPP_ANY, then only rules that output
- * to 'out_port' are included.
+/* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
+ * on classifiers rules are done in the "strict" way required for OpenFlow
+ * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected
+ * rules on list 'rules'.
*
* Hidden rules are always omitted.
*
* Returns 0 on success, otherwise an OpenFlow error code. */
static enum ofperr
-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)
+collect_rules_strict(struct ofproto *ofproto,
+ const struct rule_criteria *criteria,
+ struct rule_collection *rules)
{
struct oftable *table;
- struct cls_rule cr;
int error;
- error = check_table_id(ofproto, table_id);
+ rule_collection_init(rules);
+
+ error = check_table_id(ofproto, criteria->table_id);
if (error) {
- return error;
+ goto exit;
}
- list_init(rules);
- cls_rule_init(&cr, match, priority);
-
- if (cookie_mask == htonll(UINT64_MAX)) {
+ if (criteria->cookie_mask == htonll(UINT64_MAX)) {
struct rule *rule;
- HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, hash_cookie(cookie),
+ HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
+ hash_cookie(criteria->cookie),
&ofproto->cookies) {
- if (cls_rule_equal(&rule->cr, &cr)) {
- error = collect_rule(rule, table_id, cookie, cookie_mask,
- out_port, rules);
+ if (cls_rule_equal(&rule->cr, &criteria->cr)) {
+ error = collect_rule(rule, criteria, rules);
if (error) {
break;
}
}
}
} else {
- FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) {
+ FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
struct rule *rule;
ovs_rwlock_rdlock(&table->cls.rwlock);
- rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls,
- &cr));
+ rule = rule_from_cls_rule(classifier_find_rule_exactly(
+ &table->cls, &criteria->cr));
ovs_rwlock_unlock(&table->cls.rwlock);
if (rule) {
- error = collect_rule(rule, table_id, cookie, cookie_mask,
- out_port, rules);
+ error = collect_rule(rule, criteria, rules);
if (error) {
break;
}
}
}
- cls_rule_destroy(&cr);
+exit:
+ if (error) {
+ rule_collection_destroy(rules);
+ }
return error;
}
{
struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
struct ofputil_flow_stats_request fsr;
+ struct rule_criteria criteria;
+ struct rule_collection rules;
struct list replies;
- struct list rules;
- struct rule *rule;
enum ofperr error;
+ size_t i;
error = ofputil_decode_flow_stats_request(&fsr, request);
if (error) {
return error;
}
- error = collect_rules_loose(ofproto, fsr.table_id, &fsr.match,
- fsr.cookie, fsr.cookie_mask,
- fsr.out_port, &rules);
+ rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie,
+ fsr.cookie_mask, fsr.out_port);
+ error = collect_rules_loose(ofproto, &criteria, &rules);
+ rule_criteria_destroy(&criteria);
if (error) {
return error;
}
ofpmp_init(&replies, request);
- LIST_FOR_EACH (rule, ofproto_node, &rules) {
+ for (i = 0; i < rules.n; i++) {
+ struct rule *rule = rules.rules[i];
long long int now = time_msec();
struct ofputil_flow_stats fs;
}
ofputil_append_flow_stats_reply(&fs, &replies);
}
+ rule_collection_destroy(&rules);
+
ofconn_send_replies(ofconn, &replies);
return 0;
struct ofputil_flow_stats_request request;
struct ofputil_aggregate_stats stats;
bool unknown_packets, unknown_bytes;
+ struct rule_criteria criteria;
+ struct rule_collection rules;
struct ofpbuf *reply;
- struct list rules;
- struct rule *rule;
enum ofperr error;
+ size_t i;
error = ofputil_decode_flow_stats_request(&request, oh);
if (error) {
return error;
}
- error = collect_rules_loose(ofproto, request.table_id, &request.match,
- request.cookie, request.cookie_mask,
- request.out_port, &rules);
+ rule_criteria_init(&criteria, request.table_id, &request.match, 0,
+ request.cookie, request.cookie_mask,
+ request.out_port);
+ error = collect_rules_loose(ofproto, &criteria, &rules);
+ rule_criteria_destroy(&criteria);
if (error) {
return error;
}
memset(&stats, 0, sizeof stats);
unknown_packets = unknown_bytes = false;
- LIST_FOR_EACH (rule, ofproto_node, &rules) {
+ for (i = 0; i < rules.n; i++) {
+ struct rule *rule = rules.rules[i];
uint64_t packet_count;
uint64_t byte_count;
stats.byte_count = UINT64_MAX;
}
+ rule_collection_destroy(&rules);
+
reply = ofputil_encode_aggregate_stats_reply(&stats, oh);
ofconn_send_reply(ofconn, reply);
} else if (rule->pending) {
return OFPROTO_POSTPONE;
} else {
- struct list rules;
+ struct rule_collection rules;
- list_init(&rules);
- list_push_back(&rules, &rule->ofproto_node);
+ rule_collection_init(&rules);
+ rule_collection_add(&rules, rule);
fm->modify_cookie = true;
- return modify_flows__(ofproto, ofconn, fm, request, &rules);
+ error = modify_flows__(ofproto, ofconn, fm, request, &rules);
+ rule_collection_destroy(&rules);
+
+ return error;
}
}
static enum ofperr
modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn,
struct ofputil_flow_mod *fm, const struct ofp_header *request,
- struct list *rules)
+ const struct rule_collection *rules)
{
enum ofoperation_type type;
struct ofopgroup *group;
- struct rule *rule;
enum ofperr error;
+ size_t i;
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) {
+ for (i = 0; i < rules->n; i++) {
+ struct rule *rule = rules->rules[i];
struct ofoperation *op;
bool actions_changed;
bool reset_counters;
struct ofputil_flow_mod *fm,
const struct ofp_header *request)
{
- struct list rules;
+ struct rule_criteria criteria;
+ struct rule_collection rules;
int error;
- error = collect_rules_loose(ofproto, fm->table_id, &fm->match,
- fm->cookie, fm->cookie_mask,
- OFPP_ANY, &rules);
- if (error) {
- return error;
- } else if (list_is_empty(&rules)) {
- return modify_flows_add(ofproto, ofconn, fm, request);
- } else {
- return modify_flows__(ofproto, ofconn, fm, request, &rules);
+ rule_criteria_init(&criteria, fm->table_id, &fm->match, 0,
+ fm->cookie, fm->cookie_mask, OFPP_ANY);
+ error = collect_rules_loose(ofproto, &criteria, &rules);
+ rule_criteria_destroy(&criteria);
+
+ if (!error) {
+ error = (rules.n > 0
+ ? modify_flows__(ofproto, ofconn, fm, request, &rules)
+ : modify_flows_add(ofproto, ofconn, fm, request));
}
+
+ rule_collection_destroy(&rules);
+
+ return error;
}
/* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
struct ofputil_flow_mod *fm,
const struct ofp_header *request)
{
- struct list rules;
+ struct rule_criteria criteria;
+ struct rule_collection rules;
int error;
- error = collect_rules_strict(ofproto, fm->table_id, &fm->match,
- fm->priority, fm->cookie, fm->cookie_mask,
- OFPP_ANY, &rules);
+ rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
+ fm->cookie, fm->cookie_mask, OFPP_ANY);
+ error = collect_rules_strict(ofproto, &criteria, &rules);
+ rule_criteria_destroy(&criteria);
- if (error) {
- return error;
- } else if (list_is_empty(&rules)) {
- return modify_flows_add(ofproto, ofconn, fm, request);
- } else {
- return list_is_singleton(&rules) ? modify_flows__(ofproto, ofconn,
- fm, request, &rules)
- : 0;
+ if (!error) {
+ if (rules.n == 0) {
+ error = modify_flows_add(ofproto, ofconn, fm, request);
+ } else if (rules.n == 1) {
+ error = modify_flows__(ofproto, ofconn, fm, request, &rules);
+ }
}
+
+ rule_collection_destroy(&rules);
+
+ return error;
}
\f
/* OFPFC_DELETE implementation. */
* Returns 0 on success, otherwise an OpenFlow error code. */
static enum ofperr
delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn,
- const struct ofp_header *request, struct list *rules,
+ const struct ofp_header *request,
+ const struct rule_collection *rules,
enum ofp_flow_removed_reason reason)
{
- struct rule *rule, *next;
struct ofopgroup *group;
+ size_t i;
group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX);
- LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) {
+ for (i = 0; i < rules->n; i++) {
+ struct rule *rule = rules->rules[i];
ovs_rwlock_wrlock(&rule->rwlock);
delete_flow__(rule, group, reason);
}
const struct ofputil_flow_mod *fm,
const struct ofp_header *request)
{
- struct list rules;
+ struct rule_criteria criteria;
+ struct rule_collection rules;
enum ofperr error;
- error = collect_rules_loose(ofproto, fm->table_id, &fm->match,
- fm->cookie, fm->cookie_mask,
- fm->out_port, &rules);
- return (error ? error
- : !list_is_empty(&rules) ? delete_flows__(ofproto, ofconn, request,
- &rules, OFPRR_DELETE)
- : 0);
+ rule_criteria_init(&criteria, fm->table_id, &fm->match, 0,
+ fm->cookie, fm->cookie_mask,
+ fm->out_port);
+ error = collect_rules_loose(ofproto, &criteria, &rules);
+ rule_criteria_destroy(&criteria);
+
+ if (!error && rules.n > 0) {
+ error = delete_flows__(ofproto, ofconn, request, &rules, OFPRR_DELETE);
+ }
+ rule_collection_destroy(&rules);
+
+ return error;
}
/* Implements OFPFC_DELETE_STRICT. */
const struct ofputil_flow_mod *fm,
const struct ofp_header *request)
{
- struct list rules;
+ struct rule_criteria criteria;
+ struct rule_collection rules;
enum ofperr error;
- error = collect_rules_strict(ofproto, fm->table_id, &fm->match,
- fm->priority, fm->cookie, fm->cookie_mask,
- fm->out_port, &rules);
- return (error ? error
- : list_is_singleton(&rules) ? delete_flows__(ofproto, ofconn,
- request, &rules,
- OFPRR_DELETE)
- : 0);
+ rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
+ fm->cookie, fm->cookie_mask, fm->out_port);
+ error = collect_rules_strict(ofproto, &criteria, &rules);
+ rule_criteria_destroy(&criteria);
+
+ if (!error && rules.n > 0) {
+ error = delete_flows__(ofproto, ofconn, request, &rules, OFPRR_DELETE);
+ }
+ rule_collection_destroy(&rules);
+
+ return error;
}
static void
}
void
-ofmonitor_compose_refresh_updates(struct list *rules, struct list *msgs)
+ofmonitor_compose_refresh_updates(struct rule_collection *rules,
+ struct list *msgs)
{
- struct rule *rule;
+ size_t i;
- LIST_FOR_EACH (rule, ofproto_node, rules) {
+ for (i = 0; i < rules->n; i++) {
+ struct rule *rule = rules->rules[i];
enum nx_flow_monitor_flags flags = rule->monitor_flags;
rule->monitor_flags = 0;
static void
ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m,
struct rule *rule, uint64_t seqno,
- struct list *rules)
+ struct rule_collection *rules)
{
enum nx_flow_monitor_flags update;
}
if (!rule->monitor_flags) {
- list_push_back(rules, &rule->ofproto_node);
+ rule_collection_add(rules, rule);
}
rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS);
}
static void
ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m,
uint64_t seqno,
- struct list *rules)
+ struct rule_collection *rules)
{
const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn);
const struct ofoperation *op;
static void
ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m,
- struct list *rules)
+ struct rule_collection *rules)
{
if (m->flags & NXFMF_INITIAL) {
ofproto_collect_ofmonitor_refresh_rules(m, 0, rules);
void
ofmonitor_collect_resume_rules(struct ofmonitor *m,
- uint64_t seqno, struct list *rules)
+ uint64_t seqno, struct rule_collection *rules)
{
ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules);
}
struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
struct ofmonitor **monitors;
size_t n_monitors, allocated_monitors;
+ struct rule_collection rules;
struct list replies;
enum ofperr error;
- struct list rules;
struct ofpbuf b;
size_t i;
monitors[n_monitors++] = m;
}
- list_init(&rules);
+ rule_collection_init(&rules);
for (i = 0; i < n_monitors; i++) {
ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules);
}
ofpmp_init(&replies, oh);
ofmonitor_compose_refresh_updates(&rules, &replies);
+ rule_collection_destroy(&rules);
+
ofconn_send_replies(ofconn, &replies);
free(monitors);
{
struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
uint32_t meter_id = mm->meter.meter_id;
+ struct rule_collection rules;
+ enum ofperr error = 0;
uint32_t first, last;
- struct list rules;
if (meter_id == OFPM13_ALL) {
first = 1;
/* First delete the rules that use this meter. If any of those rules are
* currently being modified, postpone the whole operation until later. */
- list_init(&rules);
+ rule_collection_init(&rules);
for (meter_id = first; meter_id <= last; ++meter_id) {
struct meter *meter = ofproto->meters[meter_id];
if (meter && !list_is_empty(&meter->rules)) {
LIST_FOR_EACH (rule, meter_list_node, &meter->rules) {
if (rule->pending) {
- return OFPROTO_POSTPONE;
+ error = OFPROTO_POSTPONE;
+ goto exit;
}
- list_push_back(&rules, &rule->ofproto_node);
+ rule_collection_add(&rules, rule);
}
}
}
- if (!list_is_empty(&rules)) {
+ if (rules.n > 0) {
delete_flows__(ofproto, ofconn, oh, &rules, OFPRR_METER_DELETE);
}
/* Delete the meters. */
meter_delete(ofproto, first, last);
- return 0;
+exit:
+ rule_collection_destroy(&rules);
+
+ return error;
}
static enum ofperr
projects / cascardo / ovs.git / blobdiff