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/* SPDX-License-Identifier: LGPL-2.1-only */
/*
* Copyright (c) 2017 Volodymyr Bendiuga <volodymyr.bendiuga@gmail.com>
*/
/**
* @ingroup cls
* @defgroup cls_mall Match-all Classifier
*
* @{
*/
#include "nl-default.h"
#include <netlink/netlink.h>
#include <netlink/attr.h>
#include <netlink/utils.h>
#include <netlink/route/classifier.h>
#include <netlink/route/cls/matchall.h>
#include <netlink/route/action.h>
#include "tc-api.h"
#include "nl-aux-route/nl-route.h"
struct rtnl_mall {
uint32_t m_classid;
uint32_t m_flags;
struct rtnl_act *m_act;
int m_mask;
};
#define MALL_ATTR_CLASSID 0x01
#define MALL_ATTR_FLAGS 0x02
#define MALL_ATTR_ACTION 0x03
static struct nla_policy mall_policy[TCA_MATCHALL_MAX + 1] = {
[TCA_MATCHALL_CLASSID] = { .type = NLA_U32 },
[TCA_MATCHALL_FLAGS] = { .type = NLA_U32 },
};
/**
* @name Attribute Modifications
* @{
*/
int rtnl_mall_set_classid(struct rtnl_cls *cls, uint32_t classid)
{
struct rtnl_mall *mall;
if (!(mall = rtnl_tc_data(TC_CAST(cls))))
return -NLE_NOMEM;
mall->m_classid = classid;
mall->m_mask |= MALL_ATTR_CLASSID;
return 0;
}
int rtnl_mall_get_classid(struct rtnl_cls *cls, uint32_t *classid)
{
struct rtnl_mall *mall;
if (!(mall = rtnl_tc_data_peek(TC_CAST(cls))))
return -NLE_INVAL;
if (!(mall->m_mask & MALL_ATTR_CLASSID))
return -NLE_INVAL;
*classid = mall->m_classid;
return 0;
}
int rtnl_mall_set_flags(struct rtnl_cls *cls, uint32_t flags)
{
struct rtnl_mall *mall;
if (!(mall = rtnl_tc_data(TC_CAST(cls))))
return -NLE_NOMEM;
mall->m_flags = flags;
mall->m_mask |= MALL_ATTR_FLAGS;
return 0;
}
int rtnl_mall_get_flags(struct rtnl_cls *cls, uint32_t *flags)
{
struct rtnl_mall *mall;
if (!(mall = rtnl_tc_data_peek(TC_CAST(cls))))
return -NLE_INVAL;
if (!(mall->m_mask & MALL_ATTR_FLAGS))
return -NLE_INVAL;
*flags = mall->m_flags;
return 0;
}
int rtnl_mall_append_action(struct rtnl_cls *cls, struct rtnl_act *act)
{
struct rtnl_mall *mall;
int err;
if (!act)
return 0;
if (!(mall = rtnl_tc_data(TC_CAST(cls))))
return -NLE_NOMEM;
if ((err = _rtnl_act_append_get(&mall->m_act, act)) < 0)
return err;
mall->m_mask |= MALL_ATTR_ACTION;
return 0;
}
struct rtnl_act *rtnl_mall_get_first_action(struct rtnl_cls *cls)
{
struct rtnl_mall *mall;
struct rtnl_act *act;
if (!(mall = rtnl_tc_data(TC_CAST(cls))))
return NULL;
if (!(mall->m_mask & MALL_ATTR_ACTION))
return NULL;
act = mall->m_act;
rtnl_act_get(act);
return act;
}
int rtnl_mall_del_action(struct rtnl_cls *cls, struct rtnl_act *act)
{
struct rtnl_mall *mall;
int ret;
if (!act)
return 0;
if (!(mall = rtnl_tc_data(TC_CAST(cls))))
return -NLE_NOMEM;
if (!(mall->m_mask & MALL_ATTR_ACTION))
return -NLE_INVAL;
ret = rtnl_act_remove(&mall->m_act, act);
if (ret < 0)
return ret;
rtnl_act_put(act);
return 0;
}
/** @} */
static void mall_free_data(struct rtnl_tc *tc, void *data)
{
struct rtnl_mall *mall = data;
if (mall->m_act)
rtnl_act_put_all(&mall->m_act);
}
static int mall_msg_parser(struct rtnl_tc *tc, void *data)
{
struct rtnl_mall *mall = data;
struct nlattr *tb[TCA_MATCHALL_MAX + 1];
int err;
err = tca_parse(tb, TCA_MATCHALL_MAX, tc, mall_policy);
if (err < 0)
return err;
if (tb[TCA_MATCHALL_CLASSID]) {
mall->m_classid = nla_get_u32(tb[TCA_MATCHALL_CLASSID]);
mall->m_mask |= MALL_ATTR_CLASSID;
}
if (tb[TCA_MATCHALL_FLAGS]) {
mall->m_flags = nla_get_u32(tb[TCA_MATCHALL_FLAGS]);
mall->m_mask |= MALL_ATTR_FLAGS;
}
if (tb[TCA_MATCHALL_ACT]) {
mall->m_mask |= MALL_ATTR_ACTION;
err = rtnl_act_parse(&mall->m_act, tb[TCA_MATCHALL_ACT]);
if (err < 0)
return err;
}
return 0;
}
static int mall_msg_fill(struct rtnl_tc *tc, void *data, struct nl_msg *msg)
{
struct rtnl_mall *mall = data;
if (!mall)
return 0;
if (mall->m_mask & MALL_ATTR_CLASSID)
NLA_PUT_U32(msg, TCA_MATCHALL_CLASSID, mall->m_classid);
if (mall->m_mask & MALL_ATTR_FLAGS)
NLA_PUT_U32(msg, TCA_MATCHALL_FLAGS, mall->m_flags);
if (mall->m_mask & MALL_ATTR_ACTION) {
int err;
err = rtnl_act_fill(msg, TCA_MATCHALL_ACT, mall->m_act);
if (err < 0)
return err;
}
return 0;
nla_put_failure:
return -NLE_NOMEM;
}
static int mall_clone(void *_dst, void *_src)
{
struct rtnl_mall *dst = _dst, *src = _src;
struct rtnl_act *next, *new;
int err;
dst->m_act = NULL;
if (src->m_act) {
if (!(dst->m_act = rtnl_act_alloc()))
return -NLE_NOMEM;
/* action nl list next and prev pointers must be updated */
nl_init_list_head(&dst->m_act->ce_list);
memcpy(dst->m_act, src->m_act, sizeof(struct rtnl_act));
next = rtnl_act_next(src->m_act);
while (next) {
new = (struct rtnl_act *) nl_object_clone((struct nl_object *) next);
if (!new)
return -NLE_NOMEM;
err = _rtnl_act_append_take(&dst->m_act, new);
if (err < 0)
return err;
next = rtnl_act_next(next);
}
}
return 0;
}
static void mall_dump_line(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_mall *mall = data;
char buf[32];
if (!mall)
return;
if (mall->m_mask & MALL_ATTR_CLASSID)
nl_dump(p, " target %s",
rtnl_tc_handle2str(mall->m_classid, buf, sizeof(buf)));
}
static void mall_dump_details(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_mall *mall = data;
if (!mall)
return;
nl_dump(p, "no details for match-all");
}
static struct rtnl_tc_ops mall_ops = {
.to_kind = "matchall",
.to_type = RTNL_TC_TYPE_CLS,
.to_size = sizeof(struct rtnl_mall),
.to_msg_parser = mall_msg_parser,
.to_free_data = mall_free_data,
.to_clone = mall_clone,
.to_msg_fill = mall_msg_fill,
.to_dump = {
[NL_DUMP_LINE] = mall_dump_line,
[NL_DUMP_DETAILS] = mall_dump_details,
},
};
static void _nl_init mall_init(void)
{
rtnl_tc_register(&mall_ops);
}
static void _nl_exit mall_exit(void)
{
rtnl_tc_unregister(&mall_ops);
}
/** @} */
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