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/*
* lib/route/qdisc/dsmark.c DSMARK
*
* 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) 2003-2011 Thomas Graf <tgraf@suug.ch>
*/
/**
* @ingroup qdisc
* @ingroup class
* @defgroup qdisc_dsmark Differentiated Services Marker (DSMARK)
* @{
*/
#include <netlink-private/netlink.h>
#include <netlink-private/tc.h>
#include <netlink/netlink.h>
#include <netlink/utils.h>
#include <netlink/route/qdisc.h>
#include <netlink-private/route/tc-api.h>
#include <netlink/route/class.h>
#include <netlink/route/qdisc/dsmark.h>
/** @cond SKIP */
#define SCH_DSMARK_ATTR_INDICES 0x1
#define SCH_DSMARK_ATTR_DEFAULT_INDEX 0x2
#define SCH_DSMARK_ATTR_SET_TC_INDEX 0x4
#define SCH_DSMARK_ATTR_MASK 0x1
#define SCH_DSMARK_ATTR_VALUE 0x2
/** @endcond */
static struct nla_policy dsmark_policy[TCA_DSMARK_MAX+1] = {
[TCA_DSMARK_INDICES] = { .type = NLA_U16 },
[TCA_DSMARK_DEFAULT_INDEX] = { .type = NLA_U16 },
[TCA_DSMARK_SET_TC_INDEX] = { .type = NLA_FLAG },
[TCA_DSMARK_VALUE] = { .type = NLA_U8 },
[TCA_DSMARK_MASK] = { .type = NLA_U8 },
};
static int dsmark_qdisc_msg_parser(struct rtnl_tc *tc, void *data)
{
struct rtnl_dsmark_qdisc *dsmark = data;
struct nlattr *tb[TCA_DSMARK_MAX + 1];
int err;
err = tca_parse(tb, TCA_DSMARK_MAX, tc, dsmark_policy);
if (err < 0)
return err;
if (tb[TCA_DSMARK_INDICES]) {
dsmark->qdm_indices = nla_get_u16(tb[TCA_DSMARK_INDICES]);
dsmark->qdm_mask |= SCH_DSMARK_ATTR_INDICES;
}
if (tb[TCA_DSMARK_DEFAULT_INDEX]) {
dsmark->qdm_default_index =
nla_get_u16(tb[TCA_DSMARK_DEFAULT_INDEX]);
dsmark->qdm_mask |= SCH_DSMARK_ATTR_DEFAULT_INDEX;
}
if (tb[TCA_DSMARK_SET_TC_INDEX]) {
dsmark->qdm_set_tc_index = 1;
dsmark->qdm_mask |= SCH_DSMARK_ATTR_SET_TC_INDEX;
}
return 0;
}
static int dsmark_class_msg_parser(struct rtnl_tc *tc, void *data)
{
struct rtnl_dsmark_class *dsmark = data;
struct nlattr *tb[TCA_DSMARK_MAX + 1];
int err;
err = tca_parse(tb, TCA_DSMARK_MAX, tc, dsmark_policy);
if (err < 0)
return err;
if (tb[TCA_DSMARK_MASK]) {
dsmark->cdm_bmask = nla_get_u8(tb[TCA_DSMARK_MASK]);
dsmark->cdm_mask |= SCH_DSMARK_ATTR_MASK;
}
if (tb[TCA_DSMARK_VALUE]) {
dsmark->cdm_value = nla_get_u8(tb[TCA_DSMARK_VALUE]);
dsmark->cdm_mask |= SCH_DSMARK_ATTR_VALUE;
}
return 0;
}
static void dsmark_qdisc_dump_line(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_dsmark_qdisc *dsmark = data;
if (dsmark && (dsmark->qdm_mask & SCH_DSMARK_ATTR_INDICES))
nl_dump(p, " indices 0x%04x", dsmark->qdm_indices);
}
static void dsmark_qdisc_dump_details(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_dsmark_qdisc *dsmark = data;
if (!dsmark)
return;
if (dsmark->qdm_mask & SCH_DSMARK_ATTR_DEFAULT_INDEX)
nl_dump(p, " default index 0x%04x", dsmark->qdm_default_index);
if (dsmark->qdm_mask & SCH_DSMARK_ATTR_SET_TC_INDEX)
nl_dump(p, " set-tc-index");
}
static void dsmark_class_dump_line(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_dsmark_class *dsmark = data;
if (!dsmark)
return;
if (dsmark->cdm_mask & SCH_DSMARK_ATTR_VALUE)
nl_dump(p, " value 0x%02x", dsmark->cdm_value);
if (dsmark->cdm_mask & SCH_DSMARK_ATTR_MASK)
nl_dump(p, " mask 0x%02x", dsmark->cdm_bmask);
}
static int dsmark_qdisc_msg_fill(struct rtnl_tc *tc, void *data,
struct nl_msg *msg)
{
struct rtnl_dsmark_qdisc *dsmark = data;
if (!dsmark)
return 0;
if (dsmark->qdm_mask & SCH_DSMARK_ATTR_INDICES)
NLA_PUT_U16(msg, TCA_DSMARK_INDICES, dsmark->qdm_indices);
if (dsmark->qdm_mask & SCH_DSMARK_ATTR_DEFAULT_INDEX)
NLA_PUT_U16(msg, TCA_DSMARK_DEFAULT_INDEX,
dsmark->qdm_default_index);
if (dsmark->qdm_mask & SCH_DSMARK_ATTR_SET_TC_INDEX)
NLA_PUT_FLAG(msg, TCA_DSMARK_SET_TC_INDEX);
return 0;
nla_put_failure:
return -NLE_MSGSIZE;
}
static int dsmark_class_msg_fill(struct rtnl_tc *tc, void *data,
struct nl_msg *msg)
{
struct rtnl_dsmark_class *dsmark = data;
if (!dsmark)
return 0;
if (dsmark->cdm_mask & SCH_DSMARK_ATTR_MASK)
NLA_PUT_U8(msg, TCA_DSMARK_MASK, dsmark->cdm_bmask);
if (dsmark->cdm_mask & SCH_DSMARK_ATTR_VALUE)
NLA_PUT_U8(msg, TCA_DSMARK_VALUE, dsmark->cdm_value);
return 0;
nla_put_failure:
return -NLE_MSGSIZE;
}
/**
* @name Class Attribute Access
* @{
*/
/**
* Set bitmask of DSMARK class.
* @arg class DSMARK class to be modified.
* @arg mask New bitmask.
* @return 0 on success or a negative error code.
*/
int rtnl_class_dsmark_set_bitmask(struct rtnl_class *class, uint8_t mask)
{
struct rtnl_dsmark_class *dsmark;
if (!(dsmark = rtnl_tc_data(TC_CAST(class))))
return -NLE_NOMEM;
dsmark->cdm_bmask = mask;
dsmark->cdm_mask |= SCH_DSMARK_ATTR_MASK;
return 0;
}
/**
* Get bitmask of DSMARK class.
* @arg class DSMARK class.
* @return Bitmask or a negative error code.
*/
int rtnl_class_dsmark_get_bitmask(struct rtnl_class *class)
{
struct rtnl_dsmark_class *dsmark;
if (!(dsmark = rtnl_tc_data(TC_CAST(class))))
return -NLE_NOMEM;
if (dsmark->cdm_mask & SCH_DSMARK_ATTR_MASK)
return dsmark->cdm_bmask;
else
return -NLE_NOATTR;
}
/**
* Set value of DSMARK class.
* @arg class DSMARK class to be modified.
* @arg value New value.
* @return 0 on success or a negative errror code.
*/
int rtnl_class_dsmark_set_value(struct rtnl_class *class, uint8_t value)
{
struct rtnl_dsmark_class *dsmark;
if (!(dsmark = rtnl_tc_data(TC_CAST(class))))
return -NLE_NOMEM;
dsmark->cdm_value = value;
dsmark->cdm_mask |= SCH_DSMARK_ATTR_VALUE;
return 0;
}
/**
* Get value of DSMARK class.
* @arg class DSMARK class.
* @return Value or a negative error code.
*/
int rtnl_class_dsmark_get_value(struct rtnl_class *class)
{
struct rtnl_dsmark_class *dsmark;
if (!(dsmark = rtnl_tc_data(TC_CAST(class))))
return -NLE_NOMEM;
if (dsmark->cdm_mask & SCH_DSMARK_ATTR_VALUE)
return dsmark->cdm_value;
else
return -NLE_NOATTR;
}
/** @} */
/**
* @name Qdisc Attribute Access
* @{
*/
/**
* Set indices of DSMARK qdisc.
* @arg qdisc DSMARK qdisc to be modified.
* @arg indices New indices.
*/
int rtnl_qdisc_dsmark_set_indices(struct rtnl_qdisc *qdisc, uint16_t indices)
{
struct rtnl_dsmark_qdisc *dsmark;
if (!(dsmark = rtnl_tc_data(TC_CAST(qdisc))))
return -NLE_NOMEM;
dsmark->qdm_indices = indices;
dsmark->qdm_mask |= SCH_DSMARK_ATTR_INDICES;
return 0;
}
/**
* Get indices of DSMARK qdisc.
* @arg qdisc DSMARK qdisc.
* @return Indices or a negative error code.
*/
int rtnl_qdisc_dsmark_get_indices(struct rtnl_qdisc *qdisc)
{
struct rtnl_dsmark_qdisc *dsmark;
if (!(dsmark = rtnl_tc_data(TC_CAST(qdisc))))
return -NLE_NOMEM;
if (dsmark->qdm_mask & SCH_DSMARK_ATTR_INDICES)
return dsmark->qdm_indices;
else
return -NLE_NOATTR;
}
/**
* Set default index of DSMARK qdisc.
* @arg qdisc DSMARK qdisc to be modified.
* @arg default_index New default index.
* @return 0 on success or a negative error code.
*/
int rtnl_qdisc_dsmark_set_default_index(struct rtnl_qdisc *qdisc,
uint16_t default_index)
{
struct rtnl_dsmark_qdisc *dsmark;
if (!(dsmark = rtnl_tc_data(TC_CAST(qdisc))))
return -NLE_NOMEM;
dsmark->qdm_default_index = default_index;
dsmark->qdm_mask |= SCH_DSMARK_ATTR_DEFAULT_INDEX;
return 0;
}
/**
* Get default index of DSMARK qdisc.
* @arg qdisc DSMARK qdisc.
* @return Default index or a negative error code.
*/
int rtnl_qdisc_dsmark_get_default_index(struct rtnl_qdisc *qdisc)
{
struct rtnl_dsmark_qdisc *dsmark;
if (!(dsmark = rtnl_tc_data(TC_CAST(qdisc))))
return -NLE_NOMEM;
if (dsmark->qdm_mask & SCH_DSMARK_ATTR_DEFAULT_INDEX)
return dsmark->qdm_default_index;
else
return -NLE_NOATTR;
}
/**
* Set set-tc-index flag of DSMARK qdisc.
* @arg qdisc DSMARK qdisc to be modified.
* @arg flag Flag indicating whether to enable or disable.
* @return 0 on success or a negative error code.
*/
int rtnl_qdisc_dsmark_set_set_tc_index(struct rtnl_qdisc *qdisc, int flag)
{
struct rtnl_dsmark_qdisc *dsmark;
if (!(dsmark = rtnl_tc_data(TC_CAST(qdisc))))
return -NLE_NOMEM;
dsmark->qdm_set_tc_index = !!flag;
dsmark->qdm_mask |= SCH_DSMARK_ATTR_SET_TC_INDEX;
return 0;
}
/**
* Get set-tc-index flag of DSMARK qdisc.
* @arg qdisc DSMARK qdisc to be modified.
* @return 1 or 0 to indicate wehther the flag is enabled or a negative
* error code.
*/
int rtnl_qdisc_dsmark_get_set_tc_index(struct rtnl_qdisc *qdisc)
{
struct rtnl_dsmark_qdisc *dsmark;
if (!(dsmark = rtnl_tc_data(TC_CAST(qdisc))))
return -NLE_NOMEM;
if (dsmark->qdm_mask & SCH_DSMARK_ATTR_SET_TC_INDEX)
return dsmark->qdm_set_tc_index;
else
return -NLE_NOATTR;
}
/** @} */
static struct rtnl_tc_ops dsmark_qdisc_ops = {
.to_kind = "dsmark",
.to_type = RTNL_TC_TYPE_QDISC,
.to_size = sizeof(struct rtnl_dsmark_qdisc),
.to_msg_parser = dsmark_qdisc_msg_parser,
.to_dump = {
[NL_DUMP_LINE] = dsmark_qdisc_dump_line,
[NL_DUMP_DETAILS] = dsmark_qdisc_dump_details,
},
.to_msg_fill = dsmark_qdisc_msg_fill,
};
static struct rtnl_tc_ops dsmark_class_ops = {
.to_kind = "dsmark",
.to_type = RTNL_TC_TYPE_CLASS,
.to_size = sizeof(struct rtnl_dsmark_class),
.to_msg_parser = dsmark_class_msg_parser,
.to_dump[NL_DUMP_LINE] = dsmark_class_dump_line,
.to_msg_fill = dsmark_class_msg_fill,
};
static void __init dsmark_init(void)
{
rtnl_tc_register(&dsmark_qdisc_ops);
rtnl_tc_register(&dsmark_class_ops);
}
static void __exit dsmark_exit(void)
{
rtnl_tc_unregister(&dsmark_qdisc_ops);
rtnl_tc_unregister(&dsmark_class_ops);
}
/** @} */
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