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