/*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
+ * Copyright (c) 2008, 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.
&dpif_linux_class,
#endif
&dpif_netdev_class,
+ &dpif_planetlab_class,
};
struct registered_dpif_class {
static struct shash dpif_classes = SHASH_INITIALIZER(&dpif_classes);
static struct sset dpif_blacklist = SSET_INITIALIZER(&dpif_blacklist);
+/* Protects 'dpif_classes', including the refcount, and 'dpif_blacklist'. */
+static struct ovs_mutex dpif_mutex = OVS_MUTEX_INITIALIZER;
+
/* Rate limit for individual messages going to or from the datapath, output at
* DBG level. This is very high because, if these are enabled, it is because
* we really need to see them. */
static void log_flow_message(const struct dpif *dpif, int error,
const char *operation,
const struct nlattr *key, size_t key_len,
+ const struct nlattr *mask, size_t mask_len,
const struct dpif_flow_stats *stats,
const struct nlattr *actions, size_t actions_len);
static void log_operation(const struct dpif *, const char *operation,
static void
dp_initialize(void)
{
- static int status = -1;
+ static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
- if (status < 0) {
+ if (ovsthread_once_start(&once)) {
int i;
- status = 0;
for (i = 0; i < ARRAY_SIZE(base_dpif_classes); i++) {
dp_register_provider(base_dpif_classes[i]);
}
+ ovsthread_once_done(&once);
}
}
-/* Registers a new datapath provider. After successful registration, new
- * datapaths of that type can be opened using dpif_open(). */
-int
-dp_register_provider(const struct dpif_class *new_class)
+static int
+dp_register_provider__(const struct dpif_class *new_class)
{
struct registered_dpif_class *registered_class;
return 0;
}
+/* Registers a new datapath provider. After successful registration, new
+ * datapaths of that type can be opened using dpif_open(). */
+int
+dp_register_provider(const struct dpif_class *new_class)
+{
+ int error;
+
+ ovs_mutex_lock(&dpif_mutex);
+ error = dp_register_provider__(new_class);
+ ovs_mutex_unlock(&dpif_mutex);
+
+ return error;
+}
+
/* Unregisters a datapath provider. 'type' must have been previously
* registered and not currently be in use by any dpifs. After unregistration
* new datapaths of that type cannot be opened using dpif_open(). */
-int
-dp_unregister_provider(const char *type)
+static int
+dp_unregister_provider__(const char *type)
{
struct shash_node *node;
struct registered_dpif_class *registered_class;
return 0;
}
+/* Unregisters a datapath provider. 'type' must have been previously
+ * registered and not currently be in use by any dpifs. After unregistration
+ * new datapaths of that type cannot be opened using dpif_open(). */
+int
+dp_unregister_provider(const char *type)
+{
+ int error;
+
+ dp_initialize();
+
+ ovs_mutex_lock(&dpif_mutex);
+ error = dp_unregister_provider__(type);
+ ovs_mutex_unlock(&dpif_mutex);
+
+ return error;
+}
+
/* Blacklists a provider. Causes future calls of dp_register_provider() with
* a dpif_class which implements 'type' to fail. */
void
dp_blacklist_provider(const char *type)
{
+ ovs_mutex_lock(&dpif_mutex);
sset_add(&dpif_blacklist, type);
+ ovs_mutex_unlock(&dpif_mutex);
}
/* Clears 'types' and enumerates the types of all currently registered datapath
dp_initialize();
sset_clear(types);
+ ovs_mutex_lock(&dpif_mutex);
SHASH_FOR_EACH(node, &dpif_classes) {
const struct registered_dpif_class *registered_class = node->data;
sset_add(types, registered_class->dpif_class->type);
}
+ ovs_mutex_unlock(&dpif_mutex);
+}
+
+static void
+dp_class_unref(struct registered_dpif_class *rc)
+{
+ ovs_mutex_lock(&dpif_mutex);
+ ovs_assert(rc->refcount);
+ rc->refcount--;
+ ovs_mutex_unlock(&dpif_mutex);
+}
+
+static struct registered_dpif_class *
+dp_class_lookup(const char *type)
+{
+ struct registered_dpif_class *rc;
+
+ ovs_mutex_lock(&dpif_mutex);
+ rc = shash_find_data(&dpif_classes, type);
+ if (rc) {
+ rc->refcount++;
+ }
+ ovs_mutex_unlock(&dpif_mutex);
+
+ return rc;
}
/* Clears 'names' and enumerates the names of all known created datapaths with
int
dp_enumerate_names(const char *type, struct sset *names)
{
- const struct registered_dpif_class *registered_class;
+ struct registered_dpif_class *registered_class;
const struct dpif_class *dpif_class;
int error;
dp_initialize();
sset_clear(names);
- registered_class = shash_find_data(&dpif_classes, type);
+ registered_class = dp_class_lookup(type);
if (!registered_class) {
VLOG_WARN("could not enumerate unknown type: %s", type);
return EAFNOSUPPORT;
dpif_class = registered_class->dpif_class;
error = dpif_class->enumerate ? dpif_class->enumerate(names) : 0;
-
if (error) {
VLOG_WARN("failed to enumerate %s datapaths: %s", dpif_class->type,
- strerror(error));
+ ovs_strerror(error));
}
+ dp_class_unref(registered_class);
return error;
}
dp_initialize();
type = dpif_normalize_type(type);
-
- registered_class = shash_find_data(&dpif_classes, type);
+ registered_class = dp_class_lookup(type);
if (!registered_class) {
VLOG_WARN("could not create datapath %s of unknown type %s", name,
type);
name, create, &dpif);
if (!error) {
ovs_assert(dpif->dpif_class == registered_class->dpif_class);
- registered_class->refcount++;
+ } else {
+ dp_class_unref(registered_class);
}
exit:
error = dpif_open(name, type, dpifp);
if (error) {
VLOG_WARN("datapath %s already exists but cannot be opened: %s",
- name, strerror(error));
+ name, ovs_strerror(error));
}
} else if (error) {
- VLOG_WARN("failed to create datapath %s: %s", name, strerror(error));
+ VLOG_WARN("failed to create datapath %s: %s",
+ name, ovs_strerror(error));
}
return error;
}
dpif_close(struct dpif *dpif)
{
if (dpif) {
- struct registered_dpif_class *registered_class;
-
- registered_class = shash_find_data(&dpif_classes,
- dpif->dpif_class->type);
- ovs_assert(registered_class);
- ovs_assert(registered_class->refcount);
+ struct registered_dpif_class *rc;
- registered_class->refcount--;
+ rc = shash_find_data(&dpif_classes, dpif->dpif_class->type);
dpif_uninit(dpif, true);
+ dp_class_unref(rc);
}
}
const char *
dpif_port_open_type(const char *datapath_type, const char *port_type)
{
- struct registered_dpif_class *registered_class;
+ struct registered_dpif_class *rc;
datapath_type = dpif_normalize_type(datapath_type);
- registered_class = shash_find_data(&dpif_classes, datapath_type);
- if (!registered_class
- || !registered_class->dpif_class->port_open_type) {
- return port_type;
+ ovs_mutex_lock(&dpif_mutex);
+ rc = shash_find_data(&dpif_classes, datapath_type);
+ if (rc && rc->dpif_class->port_open_type) {
+ port_type = rc->dpif_class->port_open_type(rc->dpif_class, port_type);
}
+ ovs_mutex_unlock(&dpif_mutex);
- return registered_class->dpif_class->port_open_type(
- registered_class->dpif_class, port_type);
+ return port_type;
}
/* Attempts to add 'netdev' as a port on 'dpif'. If 'port_nop' is
dpif_name(dpif), netdev_name, port_no);
} else {
VLOG_WARN_RL(&error_rl, "%s: failed to add %s as port: %s",
- dpif_name(dpif), netdev_name, strerror(error));
+ dpif_name(dpif), netdev_name, ovs_strerror(error));
port_no = ODPP_NONE;
}
if (port_nop) {
int error = dpif->dpif_class->port_query_by_name(dpif, devname, NULL);
if (error != 0 && error != ENOENT && error != ENODEV) {
VLOG_WARN_RL(&error_rl, "%s: failed to query port %s: %s",
- dpif_name(dpif), devname, strerror(error));
+ dpif_name(dpif), devname, ovs_strerror(error));
}
return !error;
} else {
memset(port, 0, sizeof *port);
VLOG_WARN_RL(&error_rl, "%s: failed to query port %"PRIu32": %s",
- dpif_name(dpif), port_no, strerror(error));
+ dpif_name(dpif), port_no, ovs_strerror(error));
}
return error;
}
VLOG_RL(&error_rl,
error == ENOENT || error == ENODEV ? VLL_DBG : VLL_WARN,
"%s: failed to query port %s: %s",
- dpif_name(dpif), devname, strerror(error));
+ dpif_name(dpif), devname, ovs_strerror(error));
}
return error;
}
actions = NULL;
actions_len = 0;
}
- log_flow_message(dpif, error, "flow_get", key, key_len, stats,
- actions, actions_len);
+ log_flow_message(dpif, error, "flow_get", key, key_len,
+ NULL, 0, stats, actions, actions_len);
}
return error;
}
} else if (should_log_flow_message(error)) {
log_flow_message(dpif, error, "flow_dump",
key ? *key : NULL, key ? *key_len : 0,
+ mask ? *mask : NULL, mask ? *mask_len : 0,
stats ? *stats : NULL, actions ? *actions : NULL,
actions ? *actions_len : 0);
}
dpif_name(dpif), operation, ofperr_get_name(error));
} else {
VLOG_WARN_RL(&error_rl, "%s: %s failed (%s)",
- dpif_name(dpif), operation, strerror(error));
+ dpif_name(dpif), operation, ovs_strerror(error));
}
}
static void
log_flow_message(const struct dpif *dpif, int error, const char *operation,
const struct nlattr *key, size_t key_len,
+ const struct nlattr *mask, size_t mask_len,
const struct dpif_flow_stats *stats,
const struct nlattr *actions, size_t actions_len)
{
}
ds_put_format(&ds, "%s ", operation);
if (error) {
- ds_put_format(&ds, "(%s) ", strerror(error));
+ ds_put_format(&ds, "(%s) ", ovs_strerror(error));
}
- odp_flow_key_format(key, key_len, &ds);
+ odp_flow_format(key, key_len, mask, mask_len, &ds, true);
if (stats) {
ds_put_cstr(&ds, ", ");
dpif_flow_stats_format(stats, &ds);
ds_put_cstr(&s, "[zero]");
}
log_flow_message(dpif, error, ds_cstr(&s),
- put->key, put->key_len, put->stats,
- put->actions, put->actions_len);
+ put->key, put->key_len, put->mask, put->mask_len,
+ put->stats, put->actions, put->actions_len);
ds_destroy(&s);
}
}
{
if (should_log_flow_message(error)) {
log_flow_message(dpif, error, "flow_del", del->key, del->key_len,
- !error ? del->stats : NULL, NULL, 0);
+ NULL, 0, !error ? del->stats : NULL, NULL, 0);
}
}
ds_put_format(&ds, "%s: execute ", dpif_name(dpif));
format_odp_actions(&ds, execute->actions, execute->actions_len);
if (error) {
- ds_put_format(&ds, " failed (%s)", strerror(error));
+ ds_put_format(&ds, " failed (%s)", ovs_strerror(error));
}
ds_put_format(&ds, " on packet %s", packet);
vlog(THIS_MODULE, error ? VLL_WARN : VLL_DBG, "%s", ds_cstr(&ds));
git://git.onelab.eu / sliver-openvswitch.git / blobdiff