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/*
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 2016-2022 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "defs.h"
#include "netlink_route.h"
#include "nlattr.h"
#include "netlink.h"
#include <linux/pkt_cls.h>
#include <linux/rtnetlink.h>
#include "xlat/rtnl_tc_action_attrs.h"
#include "xlat/rtnl_tca_act_flags.h"
#include "xlat/rtnl_tca_act_hw_stats.h"
#include "xlat/rtnl_tca_root_flags.h"
#include "xlat/rtnl_tca_root_attrs.h"
static bool
decode_tca_act_flags(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
static const struct decode_nla_xlat_opts opts = {
rtnl_tca_act_flags, "TCA_ACT_FLAGS_???",
.size = 4,
};
return decode_nla_flags(tcp, addr, len, &opts);
}
static bool
decode_tca_act_hw_stats(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
static const struct decode_nla_xlat_opts opts = {
rtnl_tca_act_hw_stats, "TCA_ACT_HW_STATS_???",
.size = 4,
};
return decode_nla_flags(tcp, addr, len, &opts);
}
static const nla_decoder_t tca_act_nla_decoders[] = {
[TCA_ACT_KIND] = decode_nla_str,
[TCA_ACT_OPTIONS] = NULL, /* unimplemented */
[TCA_ACT_INDEX] = decode_nla_u32,
[TCA_ACT_STATS] = decode_nla_tc_stats,
[TCA_ACT_PAD] = NULL,
[TCA_ACT_COOKIE] = NULL, /* default parser */
[TCA_ACT_FLAGS] = decode_tca_act_flags,
[TCA_ACT_HW_STATS] = decode_tca_act_hw_stats,
[TCA_ACT_USED_HW_STATS] = decode_tca_act_hw_stats,
[TCA_ACT_IN_HW_COUNT] = decode_nla_u32,
};
static bool
decode_tca_action(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
decode_nlattr(tcp, addr, len, rtnl_tc_action_attrs, "TCA_ACT_???",
ARRSZ_PAIR(tca_act_nla_decoders), NULL);
return true;
}
static bool
decode_tca_root_act_tab(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
nla_decoder_t tca_action_decoder = &decode_tca_action;
/* TCA_ROOT_TAB (nee TCA_ACT_TAB) misuses nesting for array */
decode_nlattr(tcp, addr, len, NULL, NULL,
&tca_action_decoder, 0, NULL);
return true;
}
static bool
decode_tca_root_act_flags(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
static const struct decode_nla_xlat_opts opts = {
rtnl_tca_root_flags, "TCA_ACT_FLAG_???",
.size = 4,
};
return decode_nla_flags(tcp, addr, len, &opts);
}
static bool
decode_tca_msecs(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
uint64_t val;
if (len > sizeof(val))
return false;
if (!umoven_to_uint64_or_printaddr(tcp, addr, len, &val))
print_ticks(val, 1000, 3);
return true;
}
static const nla_decoder_t tcamsg_nla_decoders[] = {
[TCA_ROOT_UNSPEC] = NULL,
[TCA_ROOT_TAB] = decode_tca_root_act_tab,
[TCA_ROOT_FLAGS] = decode_tca_root_act_flags,
[TCA_ROOT_COUNT] = decode_nla_u32,
[TCA_ROOT_TIME_DELTA] = decode_tca_msecs,
[TCA_ROOT_EXT_WARN_MSG] = decode_nla_str,
};
DECL_NETLINK_ROUTE_DECODER(decode_tcamsg)
{
struct tcamsg tca = { .tca_family = family };
tprint_struct_begin();
PRINT_FIELD_XVAL(tca, tca_family, addrfams, "AF_???");
tprint_struct_end();
const size_t offset = NLMSG_ALIGN(sizeof(tca));
if (len > offset) {
tprint_array_next();
decode_nlattr(tcp, addr + offset, len - offset,
rtnl_tca_root_attrs, "TCA_ROOT_???",
tcamsg_nla_decoders,
ARRAY_SIZE(tcamsg_nla_decoders), NULL);
}
}
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