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/*
* src/lib/qdisc.c CLI QDisc Helpers
*
* 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) 2008-2010 Thomas Graf <tgraf@suug.ch>
*/
/**
* @ingroup cli
* @defgroup cli_qdisc Queueing Disciplines
* @{
*/
#include <netlink/cli/utils.h>
#include <netlink/cli/qdisc.h>
#include <netlink/route/class.h>
#include <netlink/route/class-modules.h>
struct rtnl_qdisc *nl_cli_qdisc_alloc(void)
{
struct rtnl_qdisc *qdisc;
qdisc = rtnl_qdisc_alloc();
if (!qdisc)
nl_cli_fatal(ENOMEM, "Unable to allocate qdisc object");
return qdisc;
}
void nl_cli_qdisc_parse_dev(struct rtnl_qdisc *qdisc, struct nl_cache *link_cache, char *arg)
{
int ival;
if (!(ival = rtnl_link_name2i(link_cache, arg)))
nl_cli_fatal(ENOENT, "Link \"%s\" does not exist", arg);
rtnl_qdisc_set_ifindex(qdisc, ival);
}
void nl_cli_qdisc_parse_parent(struct rtnl_qdisc *qdisc, char *arg)
{
uint32_t parent;
int err;
if ((err = rtnl_tc_str2handle(arg, &parent)) < 0)
nl_cli_fatal(err, "Unable to parse handle \"%s\": %s",
arg, nl_geterror(err));
rtnl_qdisc_set_parent(qdisc, parent);
}
void nl_cli_qdisc_parse_handle(struct rtnl_qdisc *qdisc, char *arg)
{
uint32_t handle;
int err;
if ((err = rtnl_tc_str2handle(arg, &handle)) < 0)
nl_cli_fatal(err, "Unable to parse handle \"%s\": %s",
arg, nl_geterror(err));
rtnl_qdisc_set_handle(qdisc, handle);
}
void nl_cli_qdisc_parse_kind(struct rtnl_qdisc *qdisc, char *arg)
{
rtnl_qdisc_set_kind(qdisc, arg);
}
static NL_LIST_HEAD(qdisc_modules);
struct nl_cli_qdisc_module *__nl_cli_qdisc_lookup(struct rtnl_qdisc_ops *ops)
{
struct nl_cli_qdisc_module *qm;
nl_list_for_each_entry(qm, &qdisc_modules, qm_list)
if (qm->qm_ops == ops)
return qm;
return NULL;
}
struct nl_cli_qdisc_module *__nl_cli_class_lookup(struct rtnl_class_ops *ops)
{
struct nl_cli_qdisc_module *qm;
nl_list_for_each_entry(qm, &qdisc_modules, qm_list)
if (qm->qm_class_ops == ops)
return qm;
return NULL;
}
struct nl_cli_qdisc_module *nl_cli_qdisc_lookup(struct rtnl_qdisc_ops *ops)
{
struct nl_cli_qdisc_module *qm;
if ((qm = __nl_cli_qdisc_lookup(ops)))
return qm;
nl_cli_load_module("cli/qdisc", ops->qo_kind);
if (!(qm = __nl_cli_qdisc_lookup(ops))) {
nl_cli_fatal(EINVAL, "Application bug: The shared library for "
"the qdisc \"%s\" was successfully loaded but it "
"seems that module did not register itself");
}
return qm;
}
struct nl_cli_qdisc_module *nl_cli_qdisc_lookup_by_class(struct rtnl_class_ops *ops)
{
struct nl_cli_qdisc_module *qm;
if ((qm = __nl_cli_class_lookup(ops)))
return qm;
nl_cli_load_module("cli/qdisc", ops->co_kind);
if (!(qm = __nl_cli_class_lookup(ops))) {
nl_cli_fatal(EINVAL, "Application bug: The shared library for "
"the class \"%s\" was successfully loaded but it "
"seems that module did not register itself");
}
return qm;
}
void nl_cli_qdisc_register(struct nl_cli_qdisc_module *qm)
{
struct rtnl_qdisc_ops *ops;
if (!(ops = __rtnl_qdisc_lookup_ops(qm->qm_name))) {
nl_cli_fatal(ENOENT, "Unable to register CLI qdisc module "
"\"%s\": No matching libnl qdisc module found.", qm->qm_name);
}
if (__nl_cli_qdisc_lookup(ops)) {
nl_cli_fatal(EEXIST, "Unable to register CLI qdisc module "
"\"%s\": Module already registered.", qm->qm_name);
}
qm->qm_ops = ops;
qm->qm_class_ops = __rtnl_class_lookup_ops(qm->qm_name);
nl_list_add_tail(&qm->qm_list, &qdisc_modules);
}
void nl_cli_qdisc_unregister(struct nl_cli_qdisc_module *qm)
{
nl_list_del(&qm->qm_list);
}
/** @} */
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