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/*
* lib/route/cls_api.c Classifier Object
*
* 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) 2003-2010 Thomas Graf <tgraf@suug.ch>
*/
/**
* @ingroup cls
* @defgroup cls_obj Classifier Object
* @{
*/
#include <netlink-local.h>
#include <netlink-tc.h>
#include <netlink/netlink.h>
#include <netlink/utils.h>
#include <netlink/route/tc.h>
#include <netlink/route/classifier.h>
#include <netlink/route/classifier-modules.h>
#include <netlink/route/link.h>
/** @cond SKIP */
#define CLS_ATTR_PRIO (TCA_ATTR_MAX << 1)
#define CLS_ATTR_PROTOCOL (TCA_ATTR_MAX << 2)
/** @endcond */
static void cls_free_data(struct nl_object *obj)
{
struct rtnl_cls *cls = (struct rtnl_cls *) obj;
struct rtnl_cls_ops *cops;
tca_free_data((struct rtnl_tc *) cls);
cops = rtnl_cls_lookup_ops(cls);
if (cops && cops->co_free_data)
cops->co_free_data(cls);
nl_data_free(cls->c_subdata);
}
static int cls_clone(struct nl_object *_dst, struct nl_object *_src)
{
struct rtnl_cls *dst = nl_object_priv(_dst);
struct rtnl_cls *src = nl_object_priv(_src);
struct rtnl_cls_ops *cops;
int err;
err = tca_clone((struct rtnl_tc *) dst, (struct rtnl_tc *) src);
if (err < 0)
goto errout;
if (src->c_subdata) {
if (!(dst->c_subdata = nl_data_clone(src->c_subdata))) {
err = -NLE_NOMEM;
goto errout;
}
}
cops = rtnl_cls_lookup_ops(src);
if (cops && cops->co_clone)
err = cops->co_clone(dst, src);
errout:
return err;
}
static void cls_dump_line(struct nl_object *obj, struct nl_dump_params *p)
{
char buf[32];
struct rtnl_cls *cls = (struct rtnl_cls *) obj;
struct rtnl_cls_ops *cops;
tca_dump_line((struct rtnl_tc *) cls, "cls", p);
nl_dump(p, " prio %u protocol %s", cls->c_prio,
nl_ether_proto2str(cls->c_protocol, buf, sizeof(buf)));
cops = rtnl_cls_lookup_ops(cls);
if (cops && cops->co_dump[NL_DUMP_LINE])
cops->co_dump[NL_DUMP_LINE](cls, p);
nl_dump(p, "\n");
}
static void cls_dump_details(struct nl_object *obj, struct nl_dump_params *p)
{
struct rtnl_cls *cls = (struct rtnl_cls *) obj;
struct rtnl_cls_ops *cops;
cls_dump_line(obj, p);
tca_dump_details((struct rtnl_tc *) cls, p);
cops = rtnl_cls_lookup_ops(cls);
if (cops && cops->co_dump[NL_DUMP_DETAILS])
cops->co_dump[NL_DUMP_DETAILS](cls, p);
else
nl_dump(p, "no options\n");
}
static void cls_dump_stats(struct nl_object *obj, struct nl_dump_params *p)
{
struct rtnl_cls *cls = (struct rtnl_cls *) obj;
struct rtnl_cls_ops *cops;
cls_dump_details(obj, p);
tca_dump_stats((struct rtnl_tc *) cls, p);
nl_dump(p, "\n");
cops = rtnl_cls_lookup_ops(cls);
if (cops && cops->co_dump[NL_DUMP_STATS])
cops->co_dump[NL_DUMP_STATS](cls, p);
}
/**
* @name Allocation/Freeing
* @{
*/
struct rtnl_cls *rtnl_cls_alloc(void)
{
return (struct rtnl_cls *) nl_object_alloc(&cls_obj_ops);
}
void rtnl_cls_put(struct rtnl_cls *cls)
{
nl_object_put((struct nl_object *) cls);
}
/** @} */
/**
* @name Attributes
* @{
*/
int rtnl_cls_set_kind(struct rtnl_cls *cls, const char *kind)
{
if (cls->ce_mask & TCA_ATTR_KIND)
return -NLE_EXIST;
tca_set_kind((struct rtnl_tc *) cls, kind);
/* Force allocation of data */
rtnl_cls_data(cls);
return 0;
}
struct rtnl_cls_ops *rtnl_cls_get_ops(struct rtnl_cls *cls)
{
return cls->c_ops;
}
void rtnl_cls_set_prio(struct rtnl_cls *cls, uint16_t prio)
{
cls->c_prio = prio;
cls->ce_mask |= CLS_ATTR_PRIO;
}
uint16_t rtnl_cls_get_prio(struct rtnl_cls *cls)
{
if (cls->ce_mask & CLS_ATTR_PRIO)
return cls->c_prio;
else
return 0;
}
void rtnl_cls_set_protocol(struct rtnl_cls *cls, uint16_t protocol)
{
cls->c_protocol = protocol;
cls->ce_mask |= CLS_ATTR_PROTOCOL;
}
uint16_t rtnl_cls_get_protocol(struct rtnl_cls *cls)
{
if (cls->ce_mask & CLS_ATTR_PROTOCOL)
return cls->c_protocol;
else
return ETH_P_ALL;
}
void *rtnl_cls_data(struct rtnl_cls *cls)
{
if (!cls->c_subdata) {
struct rtnl_cls_ops *ops = cls->c_ops;
if (!ops) {
if (!cls->c_kind[0])
BUG();
ops = __rtnl_cls_lookup_ops(cls->c_kind);
if (ops == NULL)
return NULL;
cls->c_ops = ops;
}
if (!ops->co_size)
BUG();
if (!(cls->c_subdata = nl_data_alloc(NULL, ops->co_size)))
return NULL;
}
return nl_data_get(cls->c_subdata);
}
/** @} */
struct nl_object_ops cls_obj_ops = {
.oo_name = "route/cls",
.oo_size = sizeof(struct rtnl_cls),
.oo_free_data = cls_free_data,
.oo_clone = cls_clone,
.oo_dump = {
[NL_DUMP_LINE] = cls_dump_line,
[NL_DUMP_DETAILS] = cls_dump_details,
[NL_DUMP_STATS] = cls_dump_stats,
},
.oo_compare = tca_compare,
.oo_id_attrs = (TCA_ATTR_IFINDEX | TCA_ATTR_HANDLE),
};
/** @} */
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