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/*
* lib/route/class.c Queueing Classes
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation version 2.1
* of the License.
*
* Copyright (c) 2003-2010 Thomas Graf <tgraf@suug.ch>
*/
/**
* @ingroup class
* @defgroup class_obj Class Object
* @{
*/
#include <netlink-local.h>
#include <netlink-tc.h>
#include <netlink/netlink.h>
#include <netlink/route/tc.h>
#include <netlink/route/class.h>
#include <netlink/route/class-modules.h>
#include <netlink/route/qdisc.h>
#include <netlink/route/classifier.h>
#include <netlink/utils.h>
static void class_free_data(struct nl_object *obj)
{
struct rtnl_class *class = (struct rtnl_class *) obj;
struct rtnl_class_ops *cops;
tca_free_data((struct rtnl_tc *) class);
cops = rtnl_class_lookup_ops(class);
if (cops && cops->co_free_data)
cops->co_free_data(class);
}
static int class_clone(struct nl_object *_dst, struct nl_object *_src)
{
struct rtnl_class *dst = nl_object_priv(_dst);
struct rtnl_class *src = nl_object_priv(_src);
struct rtnl_class_ops *cops;
int err;
err = tca_clone((struct rtnl_tc *) dst, (struct rtnl_tc *) src);
if (err < 0)
goto errout;
cops = rtnl_class_lookup_ops(src);
if (cops && cops->co_clone)
err = cops->co_clone(dst, src);
errout:
return err;
}
static void class_dump_line(struct nl_object *obj, struct nl_dump_params *p)
{
struct rtnl_class *class = (struct rtnl_class *) obj;
struct rtnl_class_ops *cops;
tca_dump_line((struct rtnl_tc *) class, "class", p);
cops = rtnl_class_lookup_ops(class);
if (cops && cops->co_dump[NL_DUMP_LINE])
cops->co_dump[NL_DUMP_LINE](class, p);
nl_dump(p, "\n");
}
static void class_dump_details(struct nl_object *obj, struct nl_dump_params *p)
{
struct rtnl_class *class = (struct rtnl_class *) obj;
struct rtnl_class_ops *cops;
class_dump_line(obj, p);
tca_dump_details((struct rtnl_tc *) class, p);
if (class->c_info) {
char buf[32];
nl_dump(p, "child-qdisc %s ",
rtnl_tc_handle2str(class->c_info, buf, sizeof(buf)));
}
cops = rtnl_class_lookup_ops(class);
if (cops && cops->co_dump[NL_DUMP_DETAILS])
cops->co_dump[NL_DUMP_DETAILS](class, p);
else if (!class->c_info)
nl_dump(p, "noop (no leaf qdisc)");
nl_dump(p, "\n");
}
static void class_dump_stats(struct nl_object *obj, struct nl_dump_params *p)
{
struct rtnl_class *class = (struct rtnl_class *) obj;
struct rtnl_class_ops *cops;
class_dump_details(obj, p);
tca_dump_stats((struct rtnl_tc *) class, p);
nl_dump(p, "\n");
cops = rtnl_class_lookup_ops(class);
if (cops && cops->co_dump[NL_DUMP_STATS])
cops->co_dump[NL_DUMP_STATS](class, p);
}
/**
* @name Allocation/Freeing
* @{
*/
struct rtnl_class *rtnl_class_alloc(void)
{
return (struct rtnl_class *) nl_object_alloc(&class_obj_ops);
}
void rtnl_class_put(struct rtnl_class *class)
{
nl_object_put((struct nl_object *) class);
}
/** @} */
/**
* @name Leaf Qdisc
* @{
*/
/**
* Lookup the leaf qdisc of a class
* @arg class the parent class
* @arg cache a qdisc cache including at laest all qdiscs of the
* interface the specified class is attached to
* @return The qdisc from the cache or NULL if the class has no leaf qdisc
*/
struct rtnl_qdisc *rtnl_class_leaf_qdisc(struct rtnl_class *class,
struct nl_cache *cache)
{
struct rtnl_qdisc *leaf;
if (!class->c_info)
return NULL;
leaf = rtnl_qdisc_get_by_parent(cache, class->c_ifindex,
class->c_handle);
if (!leaf || leaf->q_handle != class->c_info)
return NULL;
return leaf;
}
/** @} */
/**
* @name Iterators
* @{
*/
/**
* Call a callback for each child of a class
* @arg class the parent class
* @arg cache a class cache including all classes of the interface
* the specified class is attached to
* @arg cb callback function
* @arg arg argument to be passed to callback function
*/
void rtnl_class_foreach_child(struct rtnl_class *class, struct nl_cache *cache,
void (*cb)(struct nl_object *, void *), void *arg)
{
struct rtnl_class *filter;
filter = rtnl_class_alloc();
if (!filter)
return;
rtnl_tc_set_parent((struct rtnl_tc *) filter, class->c_handle);
rtnl_tc_set_ifindex((struct rtnl_tc *) filter, class->c_ifindex);
rtnl_class_set_kind(filter, class->c_kind);
nl_cache_foreach_filter(cache, (struct nl_object *) filter, cb, arg);
rtnl_class_put(filter);
}
/**
* Call a callback for each classifier attached to the class
* @arg class the parent class
* @arg cache a filter cache including at least all the filters
* attached to the specified class
* @arg cb callback function
* @arg arg argument to be passed to callback function
*/
void rtnl_class_foreach_cls(struct rtnl_class *class, struct nl_cache *cache,
void (*cb)(struct nl_object *, void *), void *arg)
{
struct rtnl_cls *filter;
filter = rtnl_cls_alloc();
if (!filter)
return;
rtnl_tc_set_ifindex((struct rtnl_tc *) filter, class->c_ifindex);
rtnl_tc_set_parent((struct rtnl_tc *) filter, class->c_parent);
nl_cache_foreach_filter(cache, (struct nl_object *) filter, cb, arg);
rtnl_cls_put(filter);
}
/** @} */
/**
* @name Attributes
* @{
*/
void rtnl_class_set_kind(struct rtnl_class *class, const char *name)
{
tca_set_kind((struct rtnl_tc *) class, name);
class->c_ops = __rtnl_class_lookup_ops(name);
}
/** @} */
struct nl_object_ops class_obj_ops = {
.oo_name = "route/class",
.oo_size = sizeof(struct rtnl_class),
.oo_free_data = class_free_data,
.oo_clone = class_clone,
.oo_dump = {
[NL_DUMP_LINE] = class_dump_line,
[NL_DUMP_DETAILS] = class_dump_details,
[NL_DUMP_STATS] = class_dump_stats,
},
.oo_compare = tca_compare,
.oo_id_attrs = (TCA_ATTR_IFINDEX | TCA_ATTR_HANDLE),
};
/** @} */
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