/*
- * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
+ * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
* Copyright (c) 2009 InMon Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
VLOG_DEFINE_THIS_MODULE(sflow);
+static struct ovs_mutex mutex;
+
struct dpif_sflow_port {
struct hmap_node hmap_node; /* In struct dpif_sflow's "ports" hmap. */
SFLDataSource_instance dsi; /* sFlow library's notion of port number. */
size_t n_flood, n_all;
struct hmap ports; /* Contains "struct dpif_sflow_port"s. */
uint32_t probability;
- int ref_cnt;
+ struct ovs_refcount ref_cnt;
};
static void dpif_sflow_del_port__(struct dpif_sflow *,
static struct dpif_sflow_port *
dpif_sflow_find_port(const struct dpif_sflow *ds, odp_port_t odp_port)
+ OVS_REQUIRES(mutex)
{
struct dpif_sflow_port *dsp;
static void
sflow_agent_get_counters(void *ds_, SFLPoller *poller,
SFL_COUNTERS_SAMPLE_TYPE *cs)
+ OVS_REQUIRES(mutex)
{
struct dpif_sflow *ds = ds_;
SFLCounters_sample_element elem;
}
SSET_FOR_EACH (target, targets) {
- struct sockaddr_in sin;
+ struct sockaddr_storage ss;
char name[IFNAMSIZ];
- if (inet_parse_active(target, SFL_DEFAULT_COLLECTOR_PORT, &sin)
- && route_table_get_name(sin.sin_addr.s_addr, name)
- && !netdev_get_in4_by_name(name, &in4)) {
- goto success;
+ if (inet_parse_active(target, SFL_DEFAULT_COLLECTOR_PORT, &ss)
+ && ss.ss_family == AF_INET) {
+ struct sockaddr_in *sin = (struct sockaddr_in *) &ss;
+ if (route_table_get_name(sin->sin_addr.s_addr, name)
+ && !netdev_get_in4_by_name(name, &in4)) {
+ goto success;
+ }
}
}
return true;
}
-void
-dpif_sflow_clear(struct dpif_sflow *ds)
+static void
+dpif_sflow_clear__(struct dpif_sflow *ds) OVS_REQUIRES(mutex)
{
if (ds->sflow_agent) {
sfl_agent_release(ds->sflow_agent);
+ free(ds->sflow_agent);
ds->sflow_agent = NULL;
}
collectors_destroy(ds->collectors);
ds->probability = 0;
}
+void
+dpif_sflow_clear(struct dpif_sflow *ds) OVS_EXCLUDED(mutex)
+{
+ ovs_mutex_lock(&mutex);
+ dpif_sflow_clear__(ds);
+ ovs_mutex_unlock(&mutex);
+}
+
bool
-dpif_sflow_is_enabled(const struct dpif_sflow *ds)
+dpif_sflow_is_enabled(const struct dpif_sflow *ds) OVS_EXCLUDED(mutex)
{
- return ds->collectors != NULL;
+ bool enabled;
+
+ ovs_mutex_lock(&mutex);
+ enabled = ds->collectors != NULL;
+ ovs_mutex_unlock(&mutex);
+ return enabled;
}
struct dpif_sflow *
dpif_sflow_create(void)
{
+ static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
struct dpif_sflow *ds;
+ if (ovsthread_once_start(&once)) {
+ ovs_mutex_init_recursive(&mutex);
+ ovsthread_once_done(&once);
+ }
+
ds = xcalloc(1, sizeof *ds);
ds->next_tick = time_now() + 1;
hmap_init(&ds->ports);
ds->probability = 0;
route_table_register();
- ds->ref_cnt = 1;
+ ovs_refcount_init(&ds->ref_cnt);
return ds;
}
{
struct dpif_sflow *ds = CONST_CAST(struct dpif_sflow *, ds_);
if (ds) {
- ovs_assert(ds->ref_cnt > 0);
- ds->ref_cnt++;
+ ovs_refcount_ref(&ds->ref_cnt);
}
return ds;
}
* a value of %UINT32_MAX samples all packets and intermediate values sample
* intermediate fractions of packets. */
uint32_t
-dpif_sflow_get_probability(const struct dpif_sflow *ds)
+dpif_sflow_get_probability(const struct dpif_sflow *ds) OVS_EXCLUDED(mutex)
{
- return ds->probability;
+ uint32_t probability;
+ ovs_mutex_lock(&mutex);
+ probability = ds->probability;
+ ovs_mutex_unlock(&mutex);
+ return probability;
}
void
-dpif_sflow_unref(struct dpif_sflow *ds)
+dpif_sflow_unref(struct dpif_sflow *ds) OVS_EXCLUDED(mutex)
{
- if (!ds) {
- return;
- }
-
- ovs_assert(ds->ref_cnt > 0);
- if (!--ds->ref_cnt) {
+ if (ds && ovs_refcount_unref(&ds->ref_cnt) == 1) {
struct dpif_sflow_port *dsp, *next;
route_table_unregister();
static void
dpif_sflow_add_poller(struct dpif_sflow *ds, struct dpif_sflow_port *dsp)
+ OVS_REQUIRES(mutex)
{
SFLPoller *poller = sfl_agent_addPoller(ds->sflow_agent, &dsp->dsi, ds,
sflow_agent_get_counters);
void
dpif_sflow_add_port(struct dpif_sflow *ds, struct ofport *ofport,
- odp_port_t odp_port)
+ odp_port_t odp_port) OVS_EXCLUDED(mutex)
{
struct dpif_sflow_port *dsp;
int ifindex;
+ ovs_mutex_lock(&mutex);
dpif_sflow_del_port(ds, odp_port);
ifindex = netdev_get_ifindex(ofport->netdev);
if (ifindex <= 0) {
/* Not an ifindex port, so do not add a cross-reference to it here */
- return;
+ goto out;
}
/* Add to table of ports. */
if (ds->sflow_agent) {
dpif_sflow_add_poller(ds, dsp);
}
+
+out:
+ ovs_mutex_unlock(&mutex);
}
static void
dpif_sflow_del_port__(struct dpif_sflow *ds, struct dpif_sflow_port *dsp)
+ OVS_REQUIRES(mutex)
{
if (ds->sflow_agent) {
sfl_agent_removePoller(ds->sflow_agent, &dsp->dsi);
void
dpif_sflow_del_port(struct dpif_sflow *ds, odp_port_t odp_port)
+ OVS_EXCLUDED(mutex)
{
- struct dpif_sflow_port *dsp = dpif_sflow_find_port(ds, odp_port);
+ struct dpif_sflow_port *dsp;
+
+ ovs_mutex_lock(&mutex);
+ dsp = dpif_sflow_find_port(ds, odp_port);
if (dsp) {
dpif_sflow_del_port__(ds, dsp);
}
+ ovs_mutex_unlock(&mutex);
}
void
dpif_sflow_set_options(struct dpif_sflow *ds,
const struct ofproto_sflow_options *options)
+ OVS_EXCLUDED(mutex)
{
struct dpif_sflow_port *dsp;
bool options_changed;
uint32_t dsIndex;
SFLSampler *sampler;
+ ovs_mutex_lock(&mutex);
if (sset_is_empty(&options->targets) || !options->sampling_rate) {
/* No point in doing any work if there are no targets or nothing to
* sample. */
- dpif_sflow_clear(ds);
- return;
+ dpif_sflow_clear__(ds);
+ goto out;
}
options_changed = (!ds->options
if (ds->collectors == NULL) {
VLOG_WARN_RL(&rl, "no collectors could be initialized, "
"sFlow disabled");
- dpif_sflow_clear(ds);
- return;
+ dpif_sflow_clear__(ds);
+ goto out;
}
}
if (!sflow_choose_agent_address(options->agent_device,
&options->targets,
options->control_ip, &agentIP)) {
- dpif_sflow_clear(ds);
- return;
+ dpif_sflow_clear__(ds);
+ goto out;
}
/* Avoid reconfiguring if options didn't change. */
if (!options_changed) {
- return;
+ goto out;
}
ofproto_sflow_options_destroy(ds->options);
ds->options = ofproto_sflow_options_clone(options);
HMAP_FOR_EACH (dsp, hmap_node, &ds->ports) {
dpif_sflow_add_poller(ds, dsp);
}
+
+
+out:
+ ovs_mutex_unlock(&mutex);
}
int
dpif_sflow_odp_port_to_ifindex(const struct dpif_sflow *ds,
- odp_port_t odp_port)
+ odp_port_t odp_port) OVS_EXCLUDED(mutex)
{
- struct dpif_sflow_port *dsp = dpif_sflow_find_port(ds, odp_port);
- return dsp ? SFL_DS_INDEX(dsp->dsi) : 0;
+ struct dpif_sflow_port *dsp;
+ int ret;
+
+ ovs_mutex_lock(&mutex);
+ dsp = dpif_sflow_find_port(ds, odp_port);
+ ret = dsp ? SFL_DS_INDEX(dsp->dsi) : 0;
+ ovs_mutex_unlock(&mutex);
+ return ret;
}
void
dpif_sflow_received(struct dpif_sflow *ds, struct ofpbuf *packet,
const struct flow *flow, odp_port_t odp_in_port,
const union user_action_cookie *cookie)
+ OVS_EXCLUDED(mutex)
{
SFL_FLOW_SAMPLE_TYPE fs;
SFLFlow_sample_element hdrElem;
struct dpif_sflow_port *in_dsp;
ovs_be16 vlan_tci;
+ ovs_mutex_lock(&mutex);
sampler = ds->sflow_agent->samplers;
if (!sampler) {
- return;
+ goto out;
}
/* Build a flow sample. */
SFLADD_ELEMENT(&fs, &hdrElem);
SFLADD_ELEMENT(&fs, &switchElem);
sfl_sampler_writeFlowSample(sampler, &fs);
+
+out:
+ ovs_mutex_unlock(&mutex);
}
void
-dpif_sflow_run(struct dpif_sflow *ds)
+dpif_sflow_run(struct dpif_sflow *ds) OVS_EXCLUDED(mutex)
{
- if (dpif_sflow_is_enabled(ds)) {
+ ovs_mutex_lock(&mutex);
+ if (ds->collectors != NULL) {
time_t now = time_now();
route_table_run();
if (now >= ds->next_tick) {
ds->next_tick = now + 1;
}
}
+ ovs_mutex_unlock(&mutex);
}
void
-dpif_sflow_wait(struct dpif_sflow *ds)
+dpif_sflow_wait(struct dpif_sflow *ds) OVS_EXCLUDED(mutex)
{
- if (dpif_sflow_is_enabled(ds)) {
+ ovs_mutex_lock(&mutex);
+ if (ds->collectors != NULL) {
poll_timer_wait_until(ds->next_tick * 1000LL);
}
+ ovs_mutex_unlock(&mutex);
}
git://git.onelab.eu / sliver-openvswitch.git / blobdiff