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/*
* Copyright (c) 2018 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#include "netlink_route.h"
#include "nlattr.h"
#include "print_fields.h"
#include "netlink.h"
#include <netinet/in.h>
#ifdef HAVE_LINUX_IF_LINK_H
# include <linux/if_link.h>
#endif
#include <linux/rtnetlink.h>
#include "xlat/ifstats_attr_mask.h"
#include "xlat/ifstats_attr.h"
#include "xlat/ifstats_offload_attr.h"
#include "xlat/ifstats_xstats_type_attr.h"
#include "xlat/nl_bridge_vlan_flags.h"
#ifndef HAVE_STRUCT_IF_STATS_MSG
struct if_stats_msg {
uint8_t family;
uint8_t pad1;
uint16_t pad2;
uint32_t ifindex;
uint32_t filter_mask;
};
#endif
static bool
decode_nla_xstats_bridge(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct strace_bridge_vlan_xstats {
uint64_t rx_bytes;
uint64_t rx_packets;
uint64_t tx_bytes;
uint64_t tx_packets;
uint16_t vid;
uint16_t flags;
uint32_t pad2;
} st;
if (len < sizeof(struct strace_bridge_vlan_xstats))
return false;
if (umove_or_printaddr(tcp, addr, &st))
return true;
PRINT_FIELD_U("{", st, rx_bytes);
PRINT_FIELD_U(", ", st, rx_packets);
PRINT_FIELD_U(", ", st, tx_bytes);
PRINT_FIELD_U(", ", st, tx_packets);
PRINT_FIELD_U(", ", st, vid);
PRINT_FIELD_FLAGS(", ", st, flags, nl_bridge_vlan_flags,
"BRIDGE_VLAN_INFO_???");
tprints("}");
return true;
}
static const nla_decoder_t ifstats_xstats_decoders[] = {
[LINK_XSTATS_TYPE_UNSPEC] = NULL,
[LINK_XSTATS_TYPE_BRIDGE] = decode_nla_xstats_bridge,
};
static bool
decode_nla_link_xstats(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
decode_nlattr(tcp, addr, len, ifstats_xstats_type_attr,
"LINK_XSTATS_TYPE_???",
ARRSZ_PAIR(ifstats_xstats_decoders),
opaque_data);
return true;
}
static const nla_decoder_t ifstats_offload_xstats_decoders[] = {
[LINK_XSTATS_TYPE_UNSPEC] = NULL,
[LINK_XSTATS_TYPE_BRIDGE] = decode_nla_rtnl_link_stats64,
};
static bool
decode_nla_link_offload_xstats(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
decode_nlattr(tcp, addr, len, ifstats_offload_attr,
"IFLA_OFFLOAD_XSTATS_???",
ARRSZ_PAIR(ifstats_offload_xstats_decoders),
opaque_data);
return true;
}
static const nla_decoder_t ifstatsmsg_nla_decoders[] = {
[IFLA_STATS_UNSPEC] = NULL,
[IFLA_STATS_LINK_64] = decode_nla_rtnl_link_stats64,
[IFLA_STATS_LINK_XSTATS] = decode_nla_link_xstats,
[IFLA_STATS_LINK_XSTATS_SLAVE] = decode_nla_link_xstats,
[IFLA_STATS_LINK_OFFLOAD_XSTATS] = decode_nla_link_offload_xstats,
[IFLA_STATS_AF_SPEC] = decode_nla_ifla_af_spec,
};
DECL_NETLINK_ROUTE_DECODER(decode_ifstatsmsg)
{
struct if_stats_msg ifstats = { .family = family };
size_t offset = sizeof(ifstats.family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", ifstats, family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(ifstats)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(ifstats) - offset,
(char *) &ifstats + offset)) {
if (ifstats.pad1)
PRINT_FIELD_X("", ifstats, pad1);
if (ifstats.pad2)
PRINT_FIELD_X("", ifstats, pad2);
PRINT_FIELD_IFINDEX(", ", ifstats, ifindex);
PRINT_FIELD_FLAGS(", ", ifstats, filter_mask,
ifstats_attr_mask ,
"IFLA_STATS_???");
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLMSG_ALIGN(sizeof(ifstats));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
ifstats_attr, "IFLA_STATS_???",
ARRSZ_PAIR(ifstatsmsg_nla_decoders), NULL);
}
}
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