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Sourcecode: libnl2 version File versions  Download package

utils.c

/*
 * 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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