102 lines
2 KiB
C
102 lines
2 KiB
C
/*
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* lib/route/class_api.c Queueing Classes Module API
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
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*/
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/**
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* @ingroup class
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* @defgroup class_api Class Modules
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* @{
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*/
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#include <netlink-local.h>
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#include <netlink-tc.h>
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#include <netlink/netlink.h>
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#include <netlink/route/tc.h>
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#include <netlink/route/class.h>
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#include <netlink/route/class-modules.h>
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#include <netlink/utils.h>
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static struct rtnl_class_ops *class_ops_list;
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/**
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* @name Module API
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* @{
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*/
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/**
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* Register a class module
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* @arg cops class module operations
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*/
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int rtnl_class_register(struct rtnl_class_ops *cops)
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{
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struct rtnl_class_ops *o, **op;
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if (!cops->co_kind[0])
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BUG();
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for (op = &class_ops_list; (o = *op) != NULL; op = &o->co_next)
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if (!strcasecmp(cops->co_kind, o->co_kind))
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return nl_errno(EEXIST);
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cops->co_next = NULL;
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*op = cops;
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return 0;
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}
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/**
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* Unregister a class module
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* @arg cops class module operations
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*/
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int rtnl_class_unregister(struct rtnl_class_ops *cops)
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{
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struct rtnl_class_ops *o, **op;
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for (op = &class_ops_list; (o = *op) != NULL; op = &o->co_next)
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if (!strcasecmp(cops->co_kind, o->co_kind))
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break;
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if (!o)
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return nl_errno(ENOENT);
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*op = cops->co_next;
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return 0;
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}
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struct rtnl_class_ops *__rtnl_class_lookup_ops(const char *kind)
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{
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struct rtnl_class_ops *cops;
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for (cops = class_ops_list; cops; cops = cops->co_next)
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if (!strcmp(kind, cops->co_kind))
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return cops;
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return NULL;
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}
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/**
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* Lookup class operations for a class object
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* @arg class Class object.
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*
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* @return Class operations or NULL if not found.
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*/
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struct rtnl_class_ops *rtnl_class_lookup_ops(struct rtnl_class *class)
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{
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if (!class->c_ops)
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class->c_ops = __rtnl_class_lookup_ops(class->c_kind);
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return class->c_ops;
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}
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/** @} */
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/** @} */
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