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/*
* src/cls-utils.c Classifier Helpers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2 of the License.
*
* Copyright (c) 2008-2009 Thomas Graf <tgraf@suug.ch>
*/
#include "utils.h"
struct rtnl_cls *nlt_alloc_cls(void)
{
struct rtnl_cls *cls;
cls = rtnl_cls_alloc();
if (!cls)
fatal(ENOMEM, "Unable to allocate classifier object");
return cls;
}
void parse_dev(struct rtnl_cls *cls, struct nl_cache *link_cache, char *arg)
{
int ival;
if (!(ival = rtnl_link_name2i(link_cache, arg)))
fatal(ENOENT, "Link \"%s\" does not exist", arg);
rtnl_cls_set_ifindex(cls, ival);
}
void parse_prio(struct rtnl_cls *cls, char *arg)
{
uint32_t prio = parse_u32(arg);
rtnl_cls_set_prio(cls, prio);
}
void parse_parent(struct rtnl_cls *cls, char *arg)
{
uint32_t parent;
int err;
if ((err = rtnl_tc_str2handle(arg, &parent)) < 0)
fatal(err, "Unable to parse handle \"%s\": %s",
arg, nl_geterror(err));
rtnl_cls_set_parent(cls, parent);
}
void parse_handle(struct rtnl_cls *cls, char *arg)
{
uint32_t handle;
int err;
if ((err = rtnl_tc_str2handle(arg, &handle)) < 0)
fatal(err, "Unable to parse handle \"%s\": %s",
arg, nl_geterror(err));
rtnl_cls_set_handle(cls, handle);
}
void parse_proto(struct rtnl_cls *cls, char *arg)
{
int proto = nl_str2ether_proto(arg);
if (proto < 0)
fatal(proto, "Unable to parse protocol \"%s\": %s",
arg, nl_geterror(proto));
rtnl_cls_set_protocol(cls, proto);
}
static NL_LIST_HEAD(cls_modules);
struct cls_module *lookup_cls_mod(struct rtnl_cls_ops *ops)
{
struct cls_module *mod;
nl_list_for_each_entry(mod, &cls_modules, list) {
if (mod->ops == ops)
return mod;
}
return NULL;
}
void register_cls_module(struct cls_module *mod)
{
struct rtnl_cls_ops *ops;
if (!(ops = __rtnl_cls_lookup_ops(mod->name)))
fatal(ENOENT, "Could not locate classifier module \"%s\"",
mod->name);
if (lookup_cls_mod(ops) != NULL)
fatal(EEXIST, "Duplicate classifier module registration.");
mod->ops = ops;
nl_list_add_tail(&mod->list, &cls_modules);
}
void unregister_cls_module(struct cls_module *mod)
{
nl_list_del(&mod->list);
}
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