Dmitry V. Levin
b93d52fe3d
strace is now provided under the terms of the GNU Lesser General Public License version 2.1 or later, see COPYING for more details. strace test suite is now provided under the terms of the GNU General Public License version 2 or later, see tests/COPYING for more details.
118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
|
|
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
|
|
* Copyright (c) 2016-2018 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 "print_fields.h"
|
|
|
|
#include "netlink.h"
|
|
#include <linux/rtnetlink.h>
|
|
#ifdef HAVE_LINUX_NEIGHBOUR_H
|
|
# include <linux/neighbour.h>
|
|
#endif
|
|
|
|
#include "xlat/neighbor_cache_entry_flags.h"
|
|
#include "xlat/neighbor_cache_entry_states.h"
|
|
#include "xlat/rtnl_neigh_attrs.h"
|
|
|
|
static bool
|
|
decode_neigh_addr(struct tcb *const tcp,
|
|
const kernel_ulong_t addr,
|
|
const unsigned int len,
|
|
const void *const opaque_data)
|
|
{
|
|
const struct ndmsg *const ndmsg = opaque_data;
|
|
|
|
decode_inet_addr(tcp, addr, len, ndmsg->ndm_family, NULL);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
decode_nda_cacheinfo(struct tcb *const tcp,
|
|
const kernel_ulong_t addr,
|
|
const unsigned int len,
|
|
const void *const opaque_data)
|
|
{
|
|
struct nda_cacheinfo ci;
|
|
|
|
if (len < sizeof(ci))
|
|
return false;
|
|
else if (!umove_or_printaddr(tcp, addr, &ci)) {
|
|
PRINT_FIELD_U("{", ci, ndm_confirmed);
|
|
PRINT_FIELD_U(", ", ci, ndm_used);
|
|
PRINT_FIELD_U(", ", ci, ndm_updated);
|
|
PRINT_FIELD_U(", ", ci, ndm_refcnt);
|
|
tprints("}");
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static const nla_decoder_t ndmsg_nla_decoders[] = {
|
|
[NDA_DST] = decode_neigh_addr,
|
|
[NDA_LLADDR] = decode_neigh_addr,
|
|
[NDA_CACHEINFO] = decode_nda_cacheinfo,
|
|
[NDA_PROBES] = decode_nla_u32,
|
|
[NDA_VLAN] = decode_nla_u16,
|
|
[NDA_PORT] = decode_nla_be16,
|
|
[NDA_VNI] = decode_nla_u32,
|
|
[NDA_IFINDEX] = decode_nla_ifindex,
|
|
[NDA_MASTER] = decode_nla_ifindex,
|
|
[NDA_LINK_NETNSID] = decode_nla_u32,
|
|
[NDA_SRC_VNI] = NULL,
|
|
};
|
|
|
|
DECL_NETLINK_ROUTE_DECODER(decode_ndmsg)
|
|
{
|
|
struct ndmsg ndmsg = { .ndm_family = family };
|
|
size_t offset = sizeof(ndmsg.ndm_family);
|
|
bool decode_nla = false;
|
|
|
|
PRINT_FIELD_XVAL("{", ndmsg, ndm_family, addrfams, "AF_???");
|
|
|
|
tprints(", ");
|
|
if (len >= sizeof(ndmsg)) {
|
|
if (!umoven_or_printaddr(tcp, addr + offset,
|
|
sizeof(ndmsg) - offset,
|
|
(char *) &ndmsg + offset)) {
|
|
PRINT_FIELD_IFINDEX("", ndmsg, ndm_ifindex);
|
|
PRINT_FIELD_FLAGS(", ", ndmsg, ndm_state,
|
|
neighbor_cache_entry_states,
|
|
"NUD_???");
|
|
PRINT_FIELD_FLAGS(", ", ndmsg, ndm_flags,
|
|
neighbor_cache_entry_flags,
|
|
"NTF_???");
|
|
PRINT_FIELD_XVAL(", ", ndmsg, ndm_type,
|
|
routing_types, "RTN_???");
|
|
decode_nla = true;
|
|
}
|
|
} else
|
|
tprints("...");
|
|
tprints("}");
|
|
|
|
offset = NLMSG_ALIGN(sizeof(ndmsg));
|
|
if (decode_nla && len > offset) {
|
|
tprints(", ");
|
|
decode_nlattr(tcp, addr + offset, len - offset,
|
|
rtnl_neigh_attrs, "NDA_???",
|
|
ndmsg_nla_decoders,
|
|
ARRAY_SIZE(ndmsg_nla_decoders), &ndmsg);
|
|
}
|
|
}
|
|
|
|
DECL_NETLINK_ROUTE_DECODER(decode_rtm_getneigh)
|
|
{
|
|
if (family == AF_BRIDGE)
|
|
decode_ifinfomsg(tcp, nlmsghdr, family, addr, len);
|
|
else
|
|
decode_ndmsg(tcp, nlmsghdr, family, addr, len);
|
|
}
|