/*
- * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
+ * Copyright (c) 2009, 2010, 2011, 2012, 2013 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 "in-band.h"
#include "odp-util.h"
#include "ofp-actions.h"
+#include "ofp-msgs.h"
#include "ofp-util.h"
#include "ofpbuf.h"
#include "ofproto-provider.h"
/* State that should be cleared from one connection to the next. */
/* OpenFlow state. */
- enum nx_role role; /* Role. */
+ enum ofp12_controller_role role; /* Role. */
enum ofputil_protocol protocol; /* Current protocol variant. */
enum nx_packet_in_format packet_in_format; /* OFPT_PACKET_IN format. */
* that the message might be generated, a 0-bit disables it. */
uint32_t master_async_config[OAM_N_TYPES]; /* master, other */
uint32_t slave_async_config[OAM_N_TYPES]; /* slave */
+
+ /* Flow monitors. */
+ struct hmap monitors; /* Contains "struct ofmonitor"s. */
+ struct list updates; /* List of "struct ofpbuf"s. */
+ bool sent_abbrev_update; /* Does 'updates' contain NXFME_ABBREV? */
+ struct rconn_packet_counter *monitor_counter;
+ uint64_t monitor_paused;
};
static struct ofconn *ofconn_create(struct connmgr *, struct rconn *,
static void ofconn_run(struct ofconn *,
bool (*handle_openflow)(struct ofconn *,
- struct ofpbuf *ofp_msg));
+ const struct ofpbuf *ofp_msg));
static void ofconn_wait(struct ofconn *, bool handling_openflow);
static const char *ofconn_get_target(const struct ofconn *);
int burst_limit; /* Limit on accumulating packet credits. */
bool enable_async_msgs; /* Initially enable async messages? */
uint8_t dscp; /* DSCP Value for controller connection */
+ uint32_t allowed_versions; /* OpenFlow protocol versions that may
+ * be negotiated for a session. */
};
static void ofservice_reconfigure(struct ofservice *,
const struct ofproto_controller *);
-static int ofservice_create(struct connmgr *, const char *target, uint8_t dscp);
+static int ofservice_create(struct connmgr *mgr, const char *target,
+ uint32_t allowed_versions, uint8_t dscp);
static void ofservice_destroy(struct connmgr *, struct ofservice *);
static struct ofservice *ofservice_lookup(struct connmgr *,
const char *target);
/* OpenFlow connections. */
struct hmap controllers; /* Controller "struct ofconn"s. */
struct list all_conns; /* Contains "struct ofconn"s. */
+ uint64_t master_election_id; /* monotonically increasing sequence number
+ * for master election */
+ bool master_election_id_defined;
/* OpenFlow listeners. */
struct hmap services; /* Contains "struct ofservice"s. */
static void update_in_band_remotes(struct connmgr *);
static void add_snooper(struct connmgr *, struct vconn *);
+static void ofmonitor_run(struct connmgr *);
+static void ofmonitor_wait(struct connmgr *);
/* Creates and returns a new connection manager owned by 'ofproto'. 'name' is
* a name for the ofproto suitable for using in log messages.
hmap_init(&mgr->controllers);
list_init(&mgr->all_conns);
+ mgr->master_election_id = 0;
+ mgr->master_election_id_defined = false;
hmap_init(&mgr->services);
mgr->snoops = NULL;
* fail-open processing) are suppressed too. */
void
connmgr_run(struct connmgr *mgr,
- bool (*handle_openflow)(struct ofconn *, struct ofpbuf *ofp_msg))
+ bool (*handle_openflow)(struct ofconn *,
+ const struct ofpbuf *ofp_msg))
{
struct ofconn *ofconn, *next_ofconn;
struct ofservice *ofservice;
LIST_FOR_EACH_SAFE (ofconn, next_ofconn, node, &mgr->all_conns) {
ofconn_run(ofconn, handle_openflow);
}
+ ofmonitor_run(mgr);
/* Fail-open maintenance. Do this after processing the ofconns since
* fail-open checks the status of the controller rconn. */
struct vconn *vconn;
int retval;
- retval = pvconn_accept(ofservice->pvconn, OFP10_VERSION, &vconn);
+ retval = pvconn_accept(ofservice->pvconn, &vconn);
if (!retval) {
struct rconn *rconn;
char *name;
/* Passing default value for creation of the rconn */
- rconn = rconn_create(ofservice->probe_interval, 0, ofservice->dscp);
+ rconn = rconn_create(ofservice->probe_interval, 0, ofservice->dscp,
+ vconn_get_allowed_versions(vconn));
name = ofconn_make_name(mgr, vconn_get_name(vconn));
rconn_connect_unreliably(rconn, vconn, name);
free(name);
ofconn_set_rate_limit(ofconn, ofservice->rate_limit,
ofservice->burst_limit);
} else if (retval != EAGAIN) {
- VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
+ VLOG_WARN_RL(&rl, "accept failed (%s)", ovs_strerror(retval));
}
}
struct vconn *vconn;
int retval;
- retval = pvconn_accept(mgr->snoops[i], OFP10_VERSION, &vconn);
+ retval = pvconn_accept(mgr->snoops[i], &vconn);
if (!retval) {
add_snooper(mgr, vconn);
} else if (retval != EAGAIN) {
- VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
+ VLOG_WARN_RL(&rl, "accept failed (%s)", ovs_strerror(retval));
}
}
}
LIST_FOR_EACH (ofconn, node, &mgr->all_conns) {
ofconn_wait(ofconn, handling_openflow);
}
+ ofmonitor_wait(mgr);
if (handling_openflow && mgr->in_band) {
in_band_wait(mgr->in_band);
}
\f
/* OpenFlow configuration. */
-static void add_controller(struct connmgr *, const char *target, uint8_t dscp);
+static void add_controller(struct connmgr *, const char *target, uint8_t dscp,
+ uint32_t allowed_versions);
static struct ofconn *find_controller_by_target(struct connmgr *,
const char *target);
static void update_fail_open(struct connmgr *);
SHASH_FOR_EACH (node, info) {
struct ofproto_controller_info *cinfo = node->data;
while (cinfo->pairs.n) {
- free((char *) cinfo->pairs.values[--cinfo->pairs.n]);
+ free(CONST_CAST(char *, cinfo->pairs.values[--cinfo->pairs.n]));
}
free(cinfo);
}
void
connmgr_set_controllers(struct connmgr *mgr,
const struct ofproto_controller *controllers,
- size_t n_controllers)
+ size_t n_controllers, uint32_t allowed_versions)
{
bool had_controllers = connmgr_has_controllers(mgr);
struct shash new_controllers;
const struct ofproto_controller *c = &controllers[i];
if (!vconn_verify_name(c->target)) {
- if (!find_controller_by_target(mgr, c->target)) {
+ bool add = false;
+ ofconn = find_controller_by_target(mgr, c->target);
+ if (!ofconn) {
VLOG_INFO("%s: added primary controller \"%s\"",
mgr->name, c->target);
- add_controller(mgr, c->target, c->dscp);
+ add = true;
+ } else if (rconn_get_allowed_versions(ofconn->rconn) !=
+ allowed_versions) {
+ VLOG_INFO("%s: re-added primary controller \"%s\"",
+ mgr->name, c->target);
+ add = true;
+ ofconn_destroy(ofconn);
+ }
+ if (add) {
+ add_controller(mgr, c->target, c->dscp, allowed_versions);
}
} else if (!pvconn_verify_name(c->target)) {
- if (!ofservice_lookup(mgr, c->target)) {
+ bool add = false;
+ ofservice = ofservice_lookup(mgr, c->target);
+ if (!ofservice) {
VLOG_INFO("%s: added service controller \"%s\"",
mgr->name, c->target);
- ofservice_create(mgr, c->target, c->dscp);
+ add = true;
+ } else if (ofservice->allowed_versions != allowed_versions) {
+ VLOG_INFO("%s: re-added service controller \"%s\"",
+ mgr->name, c->target);
+ ofservice_destroy(mgr, ofservice);
+ add = true;
+ }
+ if (add) {
+ ofservice_create(mgr, c->target, allowed_versions, c->dscp);
}
} else {
VLOG_WARN_RL(&rl, "%s: unsupported controller \"%s\"",
/* Creates a new controller for 'target' in 'mgr'. update_controller() needs
* to be called later to finish the new ofconn's configuration. */
static void
-add_controller(struct connmgr *mgr, const char *target, uint8_t dscp)
+add_controller(struct connmgr *mgr, const char *target, uint8_t dscp,
+ uint32_t allowed_versions)
{
char *name = ofconn_make_name(mgr, target);
struct ofconn *ofconn;
- ofconn = ofconn_create(mgr, rconn_create(5, 8, dscp), OFCONN_PRIMARY, true);
+ ofconn = ofconn_create(mgr, rconn_create(5, 8, dscp, allowed_versions),
+ OFCONN_PRIMARY, true);
ofconn->pktbuf = pktbuf_create();
rconn_connect(ofconn->rconn, target, name);
hmap_insert(&mgr->controllers, &ofconn->hmap_node, hash_string(target, 0));
SSET_FOR_EACH (name, sset) {
struct pvconn *pvconn;
int error;
-
- error = pvconn_open(name, &pvconn, 0);
+ error = pvconn_open(name, 0, 0, &pvconn);
if (!error) {
pvconns[n_pvconns++] = pvconn;
} else {
- VLOG_ERR("failed to listen on %s: %s", name, strerror(error));
+ VLOG_ERR("failed to listen on %s: %s", name, ovs_strerror(error));
if (!retval) {
retval = error;
}
snoop_preference(const struct ofconn *ofconn)
{
switch (ofconn->role) {
- case NX_ROLE_MASTER:
+ case OFPCR12_ROLE_MASTER:
return 3;
- case NX_ROLE_OTHER:
+ case OFPCR12_ROLE_EQUAL:
return 2;
- case NX_ROLE_SLAVE:
+ case OFPCR12_ROLE_SLAVE:
return 1;
+ case OFPCR12_ROLE_NOCHANGE:
default:
/* Shouldn't happen. */
return 0;
return ofconn->type;
}
+/* If a master election id is defined, stores it into '*idp' and returns
+ * true. Otherwise, stores UINT64_MAX into '*idp' and returns false. */
+bool
+ofconn_get_master_election_id(const struct ofconn *ofconn, uint64_t *idp)
+{
+ *idp = (ofconn->connmgr->master_election_id_defined
+ ? ofconn->connmgr->master_election_id
+ : UINT64_MAX);
+ return ofconn->connmgr->master_election_id_defined;
+}
+
+/* Sets the master election id.
+ *
+ * Returns true if successful, false if the id is stale
+ */
+bool
+ofconn_set_master_election_id(struct ofconn *ofconn, uint64_t id)
+{
+ if (ofconn->connmgr->master_election_id_defined
+ &&
+ /* Unsigned difference interpreted as a two's complement signed
+ * value */
+ (int64_t)(id - ofconn->connmgr->master_election_id) < 0) {
+ return false;
+ }
+ ofconn->connmgr->master_election_id = id;
+ ofconn->connmgr->master_election_id_defined = true;
+
+ return true;
+}
+
/* Returns the role configured for 'ofconn'.
*
- * The default role, if no other role has been set, is NX_ROLE_OTHER. */
-enum nx_role
+ * The default role, if no other role has been set, is OFPCR12_ROLE_EQUAL. */
+enum ofp12_controller_role
ofconn_get_role(const struct ofconn *ofconn)
{
return ofconn->role;
}
-/* Changes 'ofconn''s role to 'role'. If 'role' is NX_ROLE_MASTER then any
- * existing master is demoted to a slave. */
+/* Changes 'ofconn''s role to 'role'. If 'role' is OFPCR12_ROLE_MASTER then
+ * any existing master is demoted to a slave. */
void
-ofconn_set_role(struct ofconn *ofconn, enum nx_role role)
+ofconn_set_role(struct ofconn *ofconn, enum ofp12_controller_role role)
{
- if (role == NX_ROLE_MASTER) {
+ if (role == OFPCR12_ROLE_MASTER) {
struct ofconn *other;
HMAP_FOR_EACH (other, hmap_node, &ofconn->connmgr->controllers) {
- if (other->role == NX_ROLE_MASTER) {
- other->role = NX_ROLE_SLAVE;
+ if (other->role == OFPCR12_ROLE_MASTER) {
+ other->role = OFPCR12_ROLE_SLAVE;
}
}
}
/* Returns the currently configured protocol for 'ofconn', one of OFPUTIL_P_*.
*
- * The default, if no other format has been set, is OFPUTIL_P_OPENFLOW10. */
+ * Returns OFPUTIL_P_NONE, which is not a valid protocol, if 'ofconn' hasn't
+ * completed version negotiation. This can't happen if at least one OpenFlow
+ * message, other than OFPT_HELLO, has been received on the connection (such as
+ * in ofproto.c's message handling code), since version negotiation is a
+ * prerequisite for starting to receive messages. This means that
+ * OFPUTIL_P_NONE is a special case that most callers need not worry about. */
enum ofputil_protocol
-ofconn_get_protocol(struct ofconn *ofconn)
-{
+ofconn_get_protocol(const struct ofconn *ofconn)
+{
+ if (ofconn->protocol == OFPUTIL_P_NONE &&
+ rconn_is_connected(ofconn->rconn)) {
+ int version = rconn_get_version(ofconn->rconn);
+ if (version > 0) {
+ ofconn_set_protocol(CONST_CAST(struct ofconn *, ofconn),
+ ofputil_protocol_from_ofp_version(version));
+ }
+ }
+
return ofconn->protocol;
}
ofconn_send_error(const struct ofconn *ofconn,
const struct ofp_header *request, enum ofperr error)
{
+ static struct vlog_rate_limit err_rl = VLOG_RATE_LIMIT_INIT(10, 10);
struct ofpbuf *reply;
reply = ofperr_encode_reply(error, request);
- if (reply) {
- static struct vlog_rate_limit err_rl = VLOG_RATE_LIMIT_INIT(10, 10);
-
- if (!VLOG_DROP_INFO(&err_rl)) {
- const struct ofputil_msg_type *type;
- const char *type_name;
- size_t request_len;
-
- request_len = ntohs(request->length);
- type_name = (!ofputil_decode_msg_type_partial(request,
- MIN(64, request_len),
- &type)
- ? ofputil_msg_type_name(type)
- : "invalid");
-
- VLOG_INFO("%s: sending %s error reply to %s message",
- rconn_get_name(ofconn->rconn), ofperr_to_string(error),
- type_name);
- }
- ofconn_send_reply(ofconn, reply);
+ if (!VLOG_DROP_INFO(&err_rl)) {
+ const char *type_name;
+ size_t request_len;
+ enum ofpraw raw;
+
+ request_len = ntohs(request->length);
+ type_name = (!ofpraw_decode_partial(&raw, request,
+ MIN(64, request_len))
+ ? ofpraw_get_name(raw)
+ : "invalid");
+
+ VLOG_INFO("%s: sending %s error reply to %s message",
+ rconn_get_name(ofconn->rconn), ofperr_to_string(error),
+ type_name);
}
+ ofconn_send_reply(ofconn, reply);
}
/* Same as pktbuf_retrieve(), using the pktbuf owned by 'ofconn'. */
enum ofperr
ofconn_pktbuf_retrieve(struct ofconn *ofconn, uint32_t id,
- struct ofpbuf **bufferp, uint16_t *in_port)
+ struct ofpbuf **bufferp, ofp_port_t *in_port)
{
return pktbuf_retrieve(ofconn->pktbuf, id, bufferp, in_port);
}
list_init(&ofconn->opgroups);
+ hmap_init(&ofconn->monitors);
+ list_init(&ofconn->updates);
+
ofconn_flush(ofconn);
return ofconn;
static void
ofconn_flush(struct ofconn *ofconn)
{
+ struct ofmonitor *monitor, *next_monitor;
int i;
- ofconn->role = NX_ROLE_OTHER;
- ofconn->protocol = OFPUTIL_P_OF10;
+ ofconn->role = OFPCR12_ROLE_EQUAL;
+ ofconn_set_protocol(ofconn, OFPUTIL_P_NONE);
ofconn->packet_in_format = NXPIF_OPENFLOW10;
/* Disassociate 'ofconn' from all of the ofopgroups that it initiated that
memset(ofconn->slave_async_config, 0,
sizeof ofconn->slave_async_config);
}
+
+ HMAP_FOR_EACH_SAFE (monitor, next_monitor, ofconn_node,
+ &ofconn->monitors) {
+ ofmonitor_destroy(monitor);
+ }
+ rconn_packet_counter_destroy(ofconn->monitor_counter);
+ ofconn->monitor_counter = rconn_packet_counter_create();
+ ofpbuf_list_delete(&ofconn->updates); /* ...but it should be empty. */
}
static void
hmap_remove(&ofconn->connmgr->controllers, &ofconn->hmap_node);
}
+ hmap_destroy(&ofconn->monitors);
list_remove(&ofconn->node);
rconn_destroy(ofconn->rconn);
rconn_packet_counter_destroy(ofconn->packet_in_counter);
rconn_packet_counter_destroy(ofconn->reply_counter);
pktbuf_destroy(ofconn->pktbuf);
+ rconn_packet_counter_destroy(ofconn->monitor_counter);
free(ofconn);
}
static bool
ofconn_may_recv(const struct ofconn *ofconn)
{
- int count = rconn_packet_counter_read (ofconn->reply_counter);
+ int count = ofconn->reply_counter->n_packets;
return (!ofconn->blocked || ofconn->retry) && count < OFCONN_REPLY_MAX;
}
static void
ofconn_run(struct ofconn *ofconn,
- bool (*handle_openflow)(struct ofconn *, struct ofpbuf *ofp_msg))
+ bool (*handle_openflow)(struct ofconn *,
+ const struct ofpbuf *ofp_msg))
{
struct connmgr *mgr = ofconn->connmgr;
size_t i;
{
const uint32_t *async_config;
- assert(reason < 32);
- assert((unsigned int) type < OAM_N_TYPES);
+ ovs_assert(reason < 32);
+ ovs_assert((unsigned int) type < OAM_N_TYPES);
- if (!rconn_is_connected(ofconn->rconn)) {
+ if (ofconn_get_protocol(ofconn) == OFPUTIL_P_NONE
+ || !rconn_is_connected(ofconn->rconn)) {
return false;
}
return false;
}
- async_config = (ofconn->role == NX_ROLE_SLAVE
+ async_config = (ofconn->role == OFPCR12_ROLE_SLAVE
? ofconn->slave_async_config
: ofconn->master_async_config);
if (!(async_config[type] & (1u << reason))) {
ofconn_send(const struct ofconn *ofconn, struct ofpbuf *msg,
struct rconn_packet_counter *counter)
{
- update_openflow_length(msg);
+ ofpmsg_update_length(msg);
rconn_send(ofconn->rconn, msg, counter);
}
\f
if (ofconn_receives_async_msg(ofconn, OAM_PORT_STATUS, reason)) {
struct ofpbuf *msg;
- msg = ofputil_encode_port_status(&ps, ofconn->protocol);
+ msg = ofputil_encode_port_status(&ps, ofconn_get_protocol(ofconn));
ofconn_send(ofconn, msg, NULL);
}
}
* also prevents new flows from being added (and expiring). (It
* also prevents processing OpenFlow requests that would not add
* new flows, so it is imperfect.) */
- msg = ofputil_encode_flow_removed(fr, ofconn->protocol);
+ msg = ofputil_encode_flow_removed(fr, ofconn_get_protocol(ofconn));
ofconn_send_reply(ofconn, msg);
}
}
pin.send_len = pin.packet_len;
} else {
/* Caller should have initialized 'send_len' to 'max_len' specified in
- * struct ofp_action_output. */
+ * output action. */
}
if (pin.buffer_id != UINT32_MAX) {
pin.send_len = MIN(pin.send_len, ofconn->miss_send_len);
* while (until a later call to pinsched_run()). */
pinsched_send(ofconn->schedulers[pin.reason == OFPR_NO_MATCH ? 0 : 1],
pin.fmd.in_port,
- ofputil_encode_packet_in(&pin, ofconn->packet_in_format),
+ ofputil_encode_packet_in(&pin, ofconn_get_protocol(ofconn),
+ ofconn->packet_in_format),
do_send_packet_in, ofconn);
}
\f
/* In-band implementation. */
bool
-connmgr_msg_in_hook(struct connmgr *mgr, const struct flow *flow,
- const struct ofpbuf *packet)
-{
- return mgr->in_band && in_band_msg_in_hook(mgr->in_band, flow, packet);
-}
-
-bool
-connmgr_may_set_up_flow(struct connmgr *mgr, const struct flow *flow,
- const struct nlattr *odp_actions,
- size_t actions_len)
+connmgr_has_in_band(struct connmgr *mgr)
{
- return !mgr->in_band || in_band_rule_check(flow, odp_actions, actions_len);
+ return mgr->in_band != NULL;
}
\f
/* Fail-open and in-band implementation. */
if (!connmgr_has_controllers(mgr)
&& mgr->fail_mode == OFPROTO_FAIL_STANDALONE) {
struct ofpbuf ofpacts;
- struct cls_rule rule;
+ struct match match;
ofpbuf_init(&ofpacts, OFPACT_OUTPUT_SIZE);
ofpact_put_OUTPUT(&ofpacts)->port = OFPP_NORMAL;
ofpact_pad(&ofpacts);
- cls_rule_init_catchall(&rule, 0);
- ofproto_add_flow(mgr->ofproto, &rule, ofpacts.data, ofpacts.size);
+ match_init_catchall(&match);
+ ofproto_add_flow(mgr->ofproto, &match, 0, ofpacts.data, ofpacts.size);
ofpbuf_uninit(&ofpacts);
}
* ofservice_reconfigure() must be called to fully configure the new
* ofservice. */
static int
-ofservice_create(struct connmgr *mgr, const char *target, uint8_t dscp)
+ofservice_create(struct connmgr *mgr, const char *target,
+ uint32_t allowed_versions, uint8_t dscp)
{
struct ofservice *ofservice;
struct pvconn *pvconn;
int error;
- error = pvconn_open(target, &pvconn, dscp);
+ error = pvconn_open(target, allowed_versions, dscp, &pvconn);
if (error) {
return error;
}
ofservice = xzalloc(sizeof *ofservice);
hmap_insert(&mgr->services, &ofservice->node, hash_string(target, 0));
ofservice->pvconn = pvconn;
+ ofservice->allowed_versions = allowed_versions;
return 0;
}
}
return NULL;
}
+\f
+/* Flow monitors (NXST_FLOW_MONITOR). */
+
+/* A counter incremented when something significant happens to an OpenFlow
+ * rule.
+ *
+ * - When a rule is added, its 'add_seqno' and 'modify_seqno' are set to
+ * the current value (which is then incremented).
+ *
+ * - When a rule is modified, its 'modify_seqno' is set to the current
+ * value (which is then incremented).
+ *
+ * Thus, by comparing an old value of monitor_seqno against a rule's
+ * 'add_seqno', one can tell whether the rule was added before or after the old
+ * value was read, and similarly for 'modify_seqno'.
+ *
+ * 32 bits should normally be sufficient (and would be nice, to save space in
+ * each rule) but then we'd have to have some special cases for wraparound.
+ *
+ * We initialize monitor_seqno to 1 to allow 0 to be used as an invalid
+ * value. */
+static uint64_t monitor_seqno = 1;
+
+COVERAGE_DEFINE(ofmonitor_pause);
+COVERAGE_DEFINE(ofmonitor_resume);
+
+enum ofperr
+ofmonitor_create(const struct ofputil_flow_monitor_request *request,
+ struct ofconn *ofconn, struct ofmonitor **monitorp)
+{
+ struct ofmonitor *m;
+
+ *monitorp = NULL;
+
+ m = ofmonitor_lookup(ofconn, request->id);
+ if (m) {
+ return OFPERR_NXBRC_FM_DUPLICATE_ID;
+ }
+
+ m = xmalloc(sizeof *m);
+ m->ofconn = ofconn;
+ hmap_insert(&ofconn->monitors, &m->ofconn_node, hash_int(request->id, 0));
+ m->id = request->id;
+ m->flags = request->flags;
+ m->out_port = request->out_port;
+ m->table_id = request->table_id;
+ minimatch_init(&m->match, &request->match);
+
+ *monitorp = m;
+ return 0;
+}
+
+struct ofmonitor *
+ofmonitor_lookup(struct ofconn *ofconn, uint32_t id)
+{
+ struct ofmonitor *m;
+
+ HMAP_FOR_EACH_IN_BUCKET (m, ofconn_node, hash_int(id, 0),
+ &ofconn->monitors) {
+ if (m->id == id) {
+ return m;
+ }
+ }
+ return NULL;
+}
+
+void
+ofmonitor_destroy(struct ofmonitor *m)
+{
+ if (m) {
+ minimatch_destroy(&m->match);
+ hmap_remove(&m->ofconn->monitors, &m->ofconn_node);
+ free(m);
+ }
+}
+
+void
+ofmonitor_report(struct connmgr *mgr, struct rule *rule,
+ enum nx_flow_update_event event,
+ enum ofp_flow_removed_reason reason,
+ const struct ofconn *abbrev_ofconn, ovs_be32 abbrev_xid)
+{
+ enum nx_flow_monitor_flags update;
+ struct ofconn *ofconn;
+
+ switch (event) {
+ case NXFME_ADDED:
+ update = NXFMF_ADD;
+ rule->add_seqno = rule->modify_seqno = monitor_seqno++;
+ break;
+
+ case NXFME_DELETED:
+ update = NXFMF_DELETE;
+ break;
+
+ case NXFME_MODIFIED:
+ update = NXFMF_MODIFY;
+ rule->modify_seqno = monitor_seqno++;
+ break;
+
+ default:
+ case NXFME_ABBREV:
+ NOT_REACHED();
+ }
+
+ LIST_FOR_EACH (ofconn, node, &mgr->all_conns) {
+ enum nx_flow_monitor_flags flags = 0;
+ struct ofmonitor *m;
+
+ if (ofconn->monitor_paused) {
+ /* Only send NXFME_DELETED notifications for flows that were added
+ * before we paused. */
+ if (event != NXFME_DELETED
+ || rule->add_seqno > ofconn->monitor_paused) {
+ continue;
+ }
+ }
+
+ HMAP_FOR_EACH (m, ofconn_node, &ofconn->monitors) {
+ if (m->flags & update
+ && (m->table_id == 0xff || m->table_id == rule->table_id)
+ && ofoperation_has_out_port(rule->pending, m->out_port)
+ && cls_rule_is_loose_match(&rule->cr, &m->match)) {
+ flags |= m->flags;
+ }
+ }
+
+ if (flags) {
+ if (list_is_empty(&ofconn->updates)) {
+ ofputil_start_flow_update(&ofconn->updates);
+ ofconn->sent_abbrev_update = false;
+ }
+
+ if (ofconn != abbrev_ofconn || ofconn->monitor_paused) {
+ struct ofputil_flow_update fu;
+ struct match match;
+
+ fu.event = event;
+ fu.reason = event == NXFME_DELETED ? reason : 0;
+ fu.idle_timeout = rule->idle_timeout;
+ fu.hard_timeout = rule->hard_timeout;
+ fu.table_id = rule->table_id;
+ fu.cookie = rule->flow_cookie;
+ minimatch_expand(&rule->cr.match, &match);
+ fu.match = &match;
+ fu.priority = rule->cr.priority;
+ if (flags & NXFMF_ACTIONS) {
+ fu.ofpacts = rule->ofpacts;
+ fu.ofpacts_len = rule->ofpacts_len;
+ } else {
+ fu.ofpacts = NULL;
+ fu.ofpacts_len = 0;
+ }
+ ofputil_append_flow_update(&fu, &ofconn->updates);
+ } else if (!ofconn->sent_abbrev_update) {
+ struct ofputil_flow_update fu;
+
+ fu.event = NXFME_ABBREV;
+ fu.xid = abbrev_xid;
+ ofputil_append_flow_update(&fu, &ofconn->updates);
+
+ ofconn->sent_abbrev_update = true;
+ }
+ }
+ }
+}
+
+void
+ofmonitor_flush(struct connmgr *mgr)
+{
+ struct ofconn *ofconn;
+
+ LIST_FOR_EACH (ofconn, node, &mgr->all_conns) {
+ struct ofpbuf *msg, *next;
+
+ LIST_FOR_EACH_SAFE (msg, next, list_node, &ofconn->updates) {
+ list_remove(&msg->list_node);
+ ofconn_send(ofconn, msg, ofconn->monitor_counter);
+ if (!ofconn->monitor_paused
+ && ofconn->monitor_counter->n_bytes > 128 * 1024) {
+ struct ofpbuf *pause;
+
+ COVERAGE_INC(ofmonitor_pause);
+ ofconn->monitor_paused = monitor_seqno++;
+ pause = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_MONITOR_PAUSED,
+ OFP10_VERSION, htonl(0), 0);
+ ofconn_send(ofconn, pause, ofconn->monitor_counter);
+ }
+ }
+ }
+}
+
+static void
+ofmonitor_resume(struct ofconn *ofconn)
+{
+ struct ofpbuf *resumed;
+ struct ofmonitor *m;
+ struct list rules;
+ struct list msgs;
+
+ list_init(&rules);
+ HMAP_FOR_EACH (m, ofconn_node, &ofconn->monitors) {
+ ofmonitor_collect_resume_rules(m, ofconn->monitor_paused, &rules);
+ }
+
+ list_init(&msgs);
+ ofmonitor_compose_refresh_updates(&rules, &msgs);
+
+ resumed = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_MONITOR_RESUMED, OFP10_VERSION,
+ htonl(0), 0);
+ list_push_back(&msgs, &resumed->list_node);
+ ofconn_send_replies(ofconn, &msgs);
+
+ ofconn->monitor_paused = 0;
+}
+
+static void
+ofmonitor_run(struct connmgr *mgr)
+{
+ struct ofconn *ofconn;
+
+ LIST_FOR_EACH (ofconn, node, &mgr->all_conns) {
+ if (ofconn->monitor_paused && !ofconn->monitor_counter->n_packets) {
+ COVERAGE_INC(ofmonitor_resume);
+ ofmonitor_resume(ofconn);
+ }
+ }
+}
+
+static void
+ofmonitor_wait(struct connmgr *mgr)
+{
+ struct ofconn *ofconn;
+
+ LIST_FOR_EACH (ofconn, node, &mgr->all_conns) {
+ if (ofconn->monitor_paused && !ofconn->monitor_counter->n_packets) {
+ poll_immediate_wake();
+ }
+ }
+}
git://git.onelab.eu / sliver-openvswitch.git / blobdiff