Logo Search packages:      
Sourcecode: libnl2 version File versions  Download package

class_obj.c

/*
 * lib/route/class.c            Queueing Classes
 *
 *    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) 2003-2006 Thomas Graf <tgraf@suug.ch>
 */

/**
 * @ingroup class
 * @defgroup class_obj Class Object
 * @{
 */

#include <netlink-local.h>
#include <netlink-tc.h>
#include <netlink/netlink.h>
#include <netlink/route/tc.h>
#include <netlink/route/class.h>
#include <netlink/route/class-modules.h>
#include <netlink/route/qdisc.h>
#include <netlink/route/classifier.h>
#include <netlink/utils.h>

static void class_free_data(struct nl_object *obj)
{
      struct rtnl_class *class = (struct rtnl_class *) obj;
      struct rtnl_class_ops *cops;
      
      tca_free_data((struct rtnl_tca *) class);

      cops = rtnl_class_lookup_ops(class);
      if (cops && cops->co_free_data)
            cops->co_free_data(class);
}

static int class_clone(struct nl_object *_dst, struct nl_object *_src)
{
      struct rtnl_class *dst = nl_object_priv(_dst);
      struct rtnl_class *src = nl_object_priv(_src);
      struct rtnl_class_ops *cops;
      int err;

      err = tca_clone((struct rtnl_tca *) dst, (struct rtnl_tca *) src);
      if (err < 0)
            goto errout;

      cops = rtnl_class_lookup_ops(src);
      if (cops && cops->co_clone)
            err = cops->co_clone(dst, src);
errout:
      return err;
}

static void class_dump_line(struct nl_object *obj, struct nl_dump_params *p)
{
      struct rtnl_class *class = (struct rtnl_class *) obj;
      struct rtnl_class_ops *cops;

      tca_dump_line((struct rtnl_tca *) class, "class", p);

      cops = rtnl_class_lookup_ops(class);
      if (cops && cops->co_dump[NL_DUMP_LINE])
            cops->co_dump[NL_DUMP_LINE](class, p);
      nl_dump(p, "\n");
}

static void class_dump_details(struct nl_object *obj, struct nl_dump_params *p)
{
      struct rtnl_class *class = (struct rtnl_class *) obj;
      struct rtnl_class_ops *cops;

      class_dump_line(obj, p);
      tca_dump_details((struct rtnl_tca *) class, p);
      
      if (class->c_info) {
            char buf[32];
            nl_dump(p, "child-qdisc %s ",
                  rtnl_tc_handle2str(class->c_info, buf, sizeof(buf)));
      }

      cops = rtnl_class_lookup_ops(class);
      if (cops && cops->co_dump[NL_DUMP_DETAILS])
            cops->co_dump[NL_DUMP_DETAILS](class, p);
      else if (!class->c_info)
            nl_dump(p, "noop (no leaf qdisc)");

      nl_dump(p, "\n");
}

static void class_dump_stats(struct nl_object *obj, struct nl_dump_params *p)
{
      struct rtnl_class *class = (struct rtnl_class *) obj;
      struct rtnl_class_ops *cops;

      class_dump_details(obj, p);
      tca_dump_stats((struct rtnl_tca *) class, p);
      nl_dump(p, "\n");

      cops = rtnl_class_lookup_ops(class);
      if (cops && cops->co_dump[NL_DUMP_STATS])
            cops->co_dump[NL_DUMP_STATS](class, p);
}

/**
 * @name Allocation/Freeing
 * @{
 */

struct rtnl_class *rtnl_class_alloc(void)
{
      return (struct rtnl_class *) nl_object_alloc(&class_obj_ops);
}

void rtnl_class_put(struct rtnl_class *class)
{
      nl_object_put((struct nl_object *) class);
}

/** @} */

/**
 * @name Leaf Qdisc
 * @{
 */

/**
 * Lookup the leaf qdisc of a class
 * @arg class           the parent class
 * @arg cache           a qdisc cache including at laest all qdiscs of the
 *                      interface the specified class is attached to
 * @return The qdisc from the cache or NULL if the class has no leaf qdisc
 */
00137 struct rtnl_qdisc *rtnl_class_leaf_qdisc(struct rtnl_class *class,
                               struct nl_cache *cache)
{
      struct rtnl_qdisc *leaf;

      if (!class->c_info)
            return NULL;

      leaf = rtnl_qdisc_get_by_parent(cache, class->c_ifindex,
                              class->c_handle);
      if (!leaf || leaf->q_handle != class->c_info)
            return NULL;

      return leaf;
}

/** @} */


/**
 * @name Iterators
 * @{
 */

/**
 * Call a callback for each child of a class
 * @arg class           the parent class
 * @arg cache           a class cache including all classes of the interface
 *                      the specified class is attached to
 * @arg cb              callback function
 * @arg arg             argument to be passed to callback function
 */
00169 void rtnl_class_foreach_child(struct rtnl_class *class, struct nl_cache *cache,
                        void (*cb)(struct nl_object *, void *), void *arg)
{
      struct rtnl_class *filter;
      
      filter = rtnl_class_alloc();
      if (!filter)
            return;

      rtnl_class_set_parent(filter, class->c_handle);
      rtnl_class_set_ifindex(filter, class->c_ifindex);
      rtnl_class_set_kind(filter, class->c_kind);

      nl_cache_foreach_filter(cache, (struct nl_object *) filter, cb, arg);
      rtnl_class_put(filter);
}

/**
 * Call a callback for each classifier attached to the class
 * @arg class           the parent class
 * @arg cache           a filter cache including at least all the filters
 *                      attached to the specified class
 * @arg cb              callback function
 * @arg arg             argument to be passed to callback function
 */
00194 void rtnl_class_foreach_cls(struct rtnl_class *class, struct nl_cache *cache,
                      void (*cb)(struct nl_object *, void *), void *arg)
{
      struct rtnl_cls *filter;

      filter = rtnl_cls_alloc();
      if (!filter)
            return;

      rtnl_cls_set_ifindex(filter, class->c_ifindex);
      rtnl_cls_set_parent(filter, class->c_parent);

      nl_cache_foreach_filter(cache, (struct nl_object *) filter, cb, arg);
      rtnl_cls_put(filter);
}

/** @} */


/**
 * @name Attributes
 * @{
 */

void rtnl_class_set_ifindex(struct rtnl_class *class, int ifindex)
{
      tca_set_ifindex((struct rtnl_tca *) class, ifindex);
}

int rtnl_class_get_ifindex(struct rtnl_class *class)
{
      return tca_get_ifindex((struct rtnl_tca *) class);
}

void rtnl_class_set_handle(struct rtnl_class *class, uint32_t handle)
{
      tca_set_handle((struct rtnl_tca *) class, handle);
}

uint32_t rtnl_class_get_handle(struct rtnl_class *class)
{
      return tca_get_handle((struct rtnl_tca *) class);
}

void rtnl_class_set_parent(struct rtnl_class *class, uint32_t parent)
{
      tca_set_parent((struct rtnl_tca *) class, parent);
}

uint32_t rtnl_class_get_parent(struct rtnl_class *class)
{
      return tca_get_parent((struct rtnl_tca *) class);
}

void rtnl_class_set_kind(struct rtnl_class *class, const char *name)
{
      tca_set_kind((struct rtnl_tca *) class, name);
      class->c_ops = __rtnl_class_lookup_ops(name);
}

char *rtnl_class_get_kind(struct rtnl_class *class)
{
      return tca_get_kind((struct rtnl_tca *) class);
}

uint64_t rtnl_class_get_stat(struct rtnl_class *class,
                       enum rtnl_tc_stats_id id)
{
      return tca_get_stat((struct rtnl_tca *) class, id);
}

/** @} */

struct nl_object_ops class_obj_ops = {
      .oo_name          = "route/class",
      .oo_size          = sizeof(struct rtnl_class),
      .oo_free_data           = class_free_data,
      .oo_clone         = class_clone,
      .oo_dump = {
          [NL_DUMP_LINE]      = class_dump_line,
          [NL_DUMP_DETAILS]   = class_dump_details,
          [NL_DUMP_STATS]     = class_dump_stats,
      },
      .oo_compare       = tca_compare,
      .oo_id_attrs            = (TCA_ATTR_IFINDEX | TCA_ATTR_HANDLE),
};

/** @} */

Generated by  Doxygen 1.6.0   Back to index