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/*
* lib/route/qdisc_obj.c Queueing Discipline Object
*
* 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) 2003-2006 Thomas Graf <tgraf@suug.ch>
*/
/**
* @ingroup qdisc
* @defgroup qdisc_obj Queueing Discipline Object
* @{
*/
#include <netlink-local.h>
#include <netlink-tc.h>
#include <netlink/netlink.h>
#include <netlink/utils.h>
#include <netlink/route/link.h>
#include <netlink/route/tc.h>
#include <netlink/route/qdisc.h>
#include <netlink/route/class.h>
#include <netlink/route/classifier.h>
#include <netlink/route/qdisc-modules.h>
static void qdisc_free_data(struct nl_object *obj)
{
struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) obj;
struct rtnl_qdisc_ops *qops;
tca_free_data((struct rtnl_tc *) qdisc);
qops = rtnl_qdisc_lookup_ops(qdisc);
if (qops && qops->qo_free_data)
qops->qo_free_data(qdisc);
}
static int qdisc_clone(struct nl_object *_dst, struct nl_object *_src)
{
struct rtnl_qdisc *dst = (struct rtnl_qdisc *) _dst;
struct rtnl_qdisc *src = (struct rtnl_qdisc *) _src;
struct rtnl_qdisc_ops *qops;
int err;
err = tca_clone((struct rtnl_tc *) dst, (struct rtnl_tc *) src);
if (err < 0)
goto errout;
qops = rtnl_qdisc_lookup_ops(src);
if (qops && qops->qo_clone)
err = qops->qo_clone(dst, src);
errout:
return err;
}
static void qdisc_dump_line(struct nl_object *obj, struct nl_dump_params *p)
{
struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) obj;
struct rtnl_qdisc_ops *qops;
tca_dump_line((struct rtnl_tc *) qdisc, "qdisc", p);
qops = rtnl_qdisc_lookup_ops(qdisc);
if (qops && qops->qo_dump[NL_DUMP_LINE])
qops->qo_dump[NL_DUMP_LINE](qdisc, p);
nl_dump(p, "\n");
}
static void qdisc_dump_details(struct nl_object *arg, struct nl_dump_params *p)
{
struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) arg;
struct rtnl_qdisc_ops *qops;
qdisc_dump_line(arg, p);
tca_dump_details((struct rtnl_tc *) qdisc, p);
nl_dump(p, "refcnt %u ", qdisc->q_info);
qops = rtnl_qdisc_lookup_ops(qdisc);
if (qops && qops->qo_dump[NL_DUMP_DETAILS])
qops->qo_dump[NL_DUMP_DETAILS](qdisc, p);
nl_dump(p, "\n");
}
static void qdisc_dump_stats(struct nl_object *arg, struct nl_dump_params *p)
{
struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) arg;
struct rtnl_qdisc_ops *qops;
qdisc_dump_details(arg, p);
tca_dump_stats((struct rtnl_tc *) qdisc, p);
nl_dump(p, "\n");
qops = rtnl_qdisc_lookup_ops(qdisc);
if (qops && qops->qo_dump[NL_DUMP_STATS])
qops->qo_dump[NL_DUMP_STATS](qdisc, p);
}
/**
* @name Allocation/Freeing
* @{
*/
struct rtnl_qdisc *rtnl_qdisc_alloc(void)
{
return (struct rtnl_qdisc *) nl_object_alloc(&qdisc_obj_ops);
}
void rtnl_qdisc_put(struct rtnl_qdisc *qdisc)
{
nl_object_put((struct nl_object *) qdisc);
}
/** @} */
/**
* @name Iterators
* @{
*/
/**
* Call a callback for each child class of a qdisc
* @arg qdisc the parent qdisc
* @arg cache a class cache including all classes of the interface
* the specified qdisc is attached to
* @arg cb callback function
* @arg arg argument to be passed to callback function
*/
void rtnl_qdisc_foreach_child(struct rtnl_qdisc *qdisc, 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, qdisc->q_handle);
rtnl_tc_set_ifindex((struct rtnl_tc *) filter, qdisc->q_ifindex);
rtnl_class_set_kind(filter, qdisc->q_kind);
nl_cache_foreach_filter(cache, (struct nl_object *) filter, cb, arg);
rtnl_class_put(filter);
}
/**
* Call a callback for each filter attached to the qdisc
* @arg qdisc the parent qdisc
* @arg cache a filter cache including at least all the filters
* attached to the specified qdisc
* @arg cb callback function
* @arg arg argument to be passed to callback function
*/
void rtnl_qdisc_foreach_cls(struct rtnl_qdisc *qdisc, 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, qdisc->q_ifindex);
rtnl_tc_set_parent((struct rtnl_tc *) filter, qdisc->q_parent);
nl_cache_foreach_filter(cache, (struct nl_object *) filter, cb, arg);
rtnl_cls_put(filter);
}
/** @} */
/**
* @name Attributes
* @{
*/
void rtnl_qdisc_set_kind(struct rtnl_qdisc *qdisc, const char *name)
{
tca_set_kind((struct rtnl_tc *) qdisc, name);
qdisc->q_ops = __rtnl_qdisc_lookup_ops(name);
}
/** @} */
/**
* @name Qdisc Specific Options
* @{
*/
/**
* Return qdisc specific options for use in TCA_OPTIONS
* @arg qdisc qdisc carrying the optiosn
*
* @return new headerless netlink message carrying the options as payload
*/
struct nl_msg *rtnl_qdisc_get_opts(struct rtnl_qdisc *qdisc)
{
struct rtnl_qdisc_ops *ops;
ops = rtnl_qdisc_lookup_ops(qdisc);
if (ops && ops->qo_get_opts)
return ops->qo_get_opts(qdisc);
return NULL;
}
/** @} */
struct nl_object_ops qdisc_obj_ops = {
.oo_name = "route/qdisc",
.oo_size = sizeof(struct rtnl_qdisc),
.oo_free_data = qdisc_free_data,
.oo_clone = qdisc_clone,
.oo_dump = {
[NL_DUMP_LINE] = qdisc_dump_line,
[NL_DUMP_DETAILS] = qdisc_dump_details,
[NL_DUMP_STATS] = qdisc_dump_stats,
},
.oo_compare = tca_compare,
.oo_id_attrs = (TCA_ATTR_IFINDEX | TCA_ATTR_HANDLE),
};
/** @} */
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