/*
* 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.
*
* 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/in6_addr_gen_mode.h"
#include "xlat/inet_devconf_indices.h"
#include "xlat/inet6_devconf_indices.h"
#include "xlat/inet6_if_flags.h"
#include "xlat/rtnl_ifla_af_spec_inet_attrs.h"
#include "xlat/rtnl_ifla_af_spec_inet6_attrs.h"
#include "xlat/rtnl_ifla_brport_attrs.h"
#include "xlat/rtnl_ifla_events.h"
#include "xlat/rtnl_ifla_info_attrs.h"
#include "xlat/rtnl_ifla_info_data_bridge_attrs.h"
#include "xlat/rtnl_ifla_info_data_tun_attrs.h"
#include "xlat/rtnl_ifla_port_attrs.h"
#include "xlat/rtnl_ifla_vf_port_attrs.h"
#include "xlat/rtnl_ifla_xdp_attached_mode.h"
#include "xlat/rtnl_ifla_xdp_attrs.h"
#include "xlat/rtnl_link_attrs.h"
#include "xlat/snmp_icmp6_stats.h"
#include "xlat/snmp_ip_stats.h"
#include "xlat/tun_device_types.h"
#include "xlat/xdp_flags.h"
static bool
decode_rtnl_link_stats(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct rtnl_link_stats st;
const unsigned int min_size =
offsetofend(struct rtnl_link_stats, tx_compressed);
const unsigned int def_size = sizeof(st);
const unsigned int size =
(len >= def_size) ? def_size :
((len == min_size) ? min_size : 0);
if (!size)
return false;
if (!umoven_or_printaddr(tcp, addr, size, &st)) {
PRINT_FIELD_U("{", st, rx_packets);
PRINT_FIELD_U(", ", st, tx_packets);
PRINT_FIELD_U(", ", st, rx_bytes);
PRINT_FIELD_U(", ", st, tx_bytes);
PRINT_FIELD_U(", ", st, rx_errors);
PRINT_FIELD_U(", ", st, tx_errors);
PRINT_FIELD_U(", ", st, rx_dropped);
PRINT_FIELD_U(", ", st, tx_dropped);
PRINT_FIELD_U(", ", st, multicast);
PRINT_FIELD_U(", ", st, collisions);
PRINT_FIELD_U(", ", st, rx_length_errors);
PRINT_FIELD_U(", ", st, rx_over_errors);
PRINT_FIELD_U(", ", st, rx_crc_errors);
PRINT_FIELD_U(", ", st, rx_frame_errors);
PRINT_FIELD_U(", ", st, rx_fifo_errors);
PRINT_FIELD_U(", ", st, rx_missed_errors);
PRINT_FIELD_U(", ", st, tx_aborted_errors);
PRINT_FIELD_U(", ", st, tx_carrier_errors);
PRINT_FIELD_U(", ", st, tx_fifo_errors);
PRINT_FIELD_U(", ", st, tx_heartbeat_errors);
PRINT_FIELD_U(", ", st, tx_window_errors);
PRINT_FIELD_U(", ", st, rx_compressed);
PRINT_FIELD_U(", ", st, tx_compressed);
#ifdef HAVE_STRUCT_RTNL_LINK_STATS_RX_NOHANDLER
if (len >= def_size)
PRINT_FIELD_U(", ", st, rx_nohandler);
#endif
tprints("}");
}
return true;
}
static bool
decode_ifla_bridge_id(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct {
uint8_t prio[2];
uint8_t addr[6];
} id;
if (len < sizeof(id))
return false;
else if (!umove_or_printaddr(tcp, addr, &id)) {
tprintf("{prio=[%u, %u]", id.prio[0], id.prio[1]);
PRINT_FIELD_MAC(", ", id, addr);
tprints("}");
}
return true;
}
static const nla_decoder_t ifla_brport_nla_decoders[] = {
[IFLA_BRPORT_STATE] = decode_nla_u8,
[IFLA_BRPORT_PRIORITY] = decode_nla_u16,
[IFLA_BRPORT_COST] = decode_nla_u32,
[IFLA_BRPORT_MODE] = decode_nla_u8,
[IFLA_BRPORT_GUARD] = decode_nla_u8,
[IFLA_BRPORT_PROTECT] = decode_nla_u8,
[IFLA_BRPORT_FAST_LEAVE] = decode_nla_u8,
[IFLA_BRPORT_LEARNING] = decode_nla_u8,
[IFLA_BRPORT_UNICAST_FLOOD] = decode_nla_u8,
[IFLA_BRPORT_PROXYARP] = decode_nla_u8,
[IFLA_BRPORT_LEARNING_SYNC] = decode_nla_u8,
[IFLA_BRPORT_PROXYARP_WIFI] = decode_nla_u8,
[IFLA_BRPORT_ROOT_ID] = decode_ifla_bridge_id,
[IFLA_BRPORT_BRIDGE_ID] = decode_ifla_bridge_id,
[IFLA_BRPORT_DESIGNATED_PORT] = decode_nla_u16,
[IFLA_BRPORT_DESIGNATED_COST] = decode_nla_u16,
[IFLA_BRPORT_ID] = decode_nla_u16,
[IFLA_BRPORT_NO] = decode_nla_u16,
[IFLA_BRPORT_TOPOLOGY_CHANGE_ACK] = decode_nla_u8,
[IFLA_BRPORT_CONFIG_PENDING] = decode_nla_u8,
[IFLA_BRPORT_MESSAGE_AGE_TIMER] = decode_nla_u64,
[IFLA_BRPORT_FORWARD_DELAY_TIMER] = decode_nla_u64,
[IFLA_BRPORT_HOLD_TIMER] = decode_nla_u64,
[IFLA_BRPORT_FLUSH] = NULL,
[IFLA_BRPORT_MULTICAST_ROUTER] = decode_nla_u8,
[IFLA_BRPORT_PAD] = NULL,
[IFLA_BRPORT_MCAST_FLOOD] = decode_nla_u8,
[IFLA_BRPORT_MCAST_TO_UCAST] = decode_nla_u8,
[IFLA_BRPORT_VLAN_TUNNEL] = decode_nla_u8,
[IFLA_BRPORT_BCAST_FLOOD] = decode_nla_u8,
[IFLA_BRPORT_GROUP_FWD_MASK] = decode_nla_u16,
[IFLA_BRPORT_NEIGH_SUPPRESS] = decode_nla_u8,
[IFLA_BRPORT_ISOLATED] = decode_nla_u8,
[IFLA_BRPORT_BACKUP_PORT] = decode_nla_ifindex,
};
static bool
decode_ifla_protinfo(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
decode_nlattr(tcp, addr, len, rtnl_ifla_brport_attrs,
"IFLA_BRPORT_???",
ARRSZ_PAIR(ifla_brport_nla_decoders), opaque_data);
return true;
}
static bool
decode_rtnl_link_ifmap(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct rtnl_link_ifmap map;
const unsigned int sizeof_ifmap =
offsetofend(struct rtnl_link_ifmap, port);
if (len < sizeof_ifmap)
return false;
else if (!umoven_or_printaddr(tcp, addr, sizeof_ifmap, &map)) {
PRINT_FIELD_X("{", map, mem_start);
PRINT_FIELD_X(", ", map, mem_end);
PRINT_FIELD_X(", ", map, base_addr);
PRINT_FIELD_U(", ", map, irq);
PRINT_FIELD_U(", ", map, dma);
PRINT_FIELD_U(", ", map, port);
tprints("}");
}
return true;
}
bool
decode_nla_linkinfo_kind(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct ifla_linkinfo_ctx *ctx = (void *) opaque_data;
memset(ctx->kind, '\0', sizeof(ctx->kind));
if (umovestr(tcp, addr, sizeof(ctx->kind), ctx->kind) <= 0) {
/*
* If we haven't seen NUL or an error occurred, set kind to
* an empty string.
*/
ctx->kind[0] = '\0';
}
printstr_ex(tcp, addr, len, QUOTE_0_TERMINATED);
return true;
}
bool
decode_nla_linkinfo_xstats_can(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct strace_can_device_stats {
uint32_t bus_error;
uint32_t error_warning;
uint32_t error_passive;
uint32_t bus_off;
uint32_t arbitration_lost;
uint32_t restarts;
} st;
const unsigned int def_size = sizeof(st);
const unsigned int size = (len >= def_size) ? def_size : 0;
if (!size)
return false;
if (umoven_or_printaddr(tcp, addr, size, &st))
return true;
PRINT_FIELD_U("{", st, bus_error);
PRINT_FIELD_U(", ", st, error_warning);
PRINT_FIELD_U(", ", st, error_passive);
PRINT_FIELD_U(", ", st, bus_off);
PRINT_FIELD_U(", ", st, arbitration_lost);
PRINT_FIELD_U(", ", st, restarts);
tprints("}");
return true;
}
bool
decode_nla_linkinfo_xstats(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct ifla_linkinfo_ctx *ctx = (void *) opaque_data;
nla_decoder_t func = NULL;
if (!strcmp(ctx->kind, "can"))
func = decode_nla_linkinfo_xstats_can;
if (func)
return func(tcp, addr, len, opaque_data);
return false;
}
static const nla_decoder_t ifla_info_data_bridge_nla_decoders[] = {
[IFLA_BR_UNSPEC] = NULL,
[IFLA_BR_FORWARD_DELAY] = decode_nla_u32,
[IFLA_BR_HELLO_TIME] = decode_nla_u32,
[IFLA_BR_MAX_AGE] = decode_nla_u32,
[IFLA_BR_AGEING_TIME] = decode_nla_u32,
[IFLA_BR_STP_STATE] = decode_nla_u32,
[IFLA_BR_PRIORITY] = decode_nla_u16,
[IFLA_BR_VLAN_FILTERING] = decode_nla_u8,
[IFLA_BR_VLAN_PROTOCOL] = decode_nla_ether_proto,
[IFLA_BR_GROUP_FWD_MASK] = decode_nla_x16,
[IFLA_BR_ROOT_ID] = decode_ifla_bridge_id,
[IFLA_BR_BRIDGE_ID] = decode_ifla_bridge_id,
[IFLA_BR_ROOT_PORT] = decode_nla_u16,
[IFLA_BR_ROOT_PATH_COST] = decode_nla_u32,
[IFLA_BR_TOPOLOGY_CHANGE] = decode_nla_u8,
[IFLA_BR_TOPOLOGY_CHANGE_DETECTED] = decode_nla_u8,
[IFLA_BR_HELLO_TIMER] = decode_nla_u64,
[IFLA_BR_TCN_TIMER] = decode_nla_u64,
[IFLA_BR_TOPOLOGY_CHANGE_TIMER] = decode_nla_u64,
[IFLA_BR_GC_TIMER] = decode_nla_u64,
[IFLA_BR_GROUP_ADDR] = NULL, /* MAC address */
[IFLA_BR_FDB_FLUSH] = NULL, /* unspecified */
[IFLA_BR_MCAST_ROUTER] = decode_nla_u8,
[IFLA_BR_MCAST_SNOOPING] = decode_nla_u8,
[IFLA_BR_MCAST_QUERY_USE_IFADDR] = decode_nla_u8,
[IFLA_BR_MCAST_QUERIER] = decode_nla_u8,
[IFLA_BR_MCAST_HASH_ELASTICITY] = decode_nla_u32,
[IFLA_BR_MCAST_HASH_MAX] = decode_nla_u32,
[IFLA_BR_MCAST_LAST_MEMBER_CNT] = decode_nla_u32,
[IFLA_BR_MCAST_STARTUP_QUERY_CNT] = decode_nla_u32,
[IFLA_BR_MCAST_LAST_MEMBER_INTVL] = decode_nla_u64,
[IFLA_BR_MCAST_MEMBERSHIP_INTVL] = decode_nla_u64,
[IFLA_BR_MCAST_QUERIER_INTVL] = decode_nla_u64,
[IFLA_BR_MCAST_QUERY_INTVL] = decode_nla_u64,
[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = decode_nla_u64,
[IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = decode_nla_u64,
[IFLA_BR_NF_CALL_IPTABLES] = decode_nla_u8,
[IFLA_BR_NF_CALL_IP6TABLES] = decode_nla_u8,
[IFLA_BR_NF_CALL_ARPTABLES] = decode_nla_u8,
[IFLA_BR_VLAN_DEFAULT_PVID] = decode_nla_u16,
[IFLA_BR_PAD] = NULL,
[IFLA_BR_VLAN_STATS_ENABLED] = decode_nla_u8,
[IFLA_BR_MCAST_STATS_ENABLED] = decode_nla_u8,
[IFLA_BR_MCAST_IGMP_VERSION] = decode_nla_u8,
[IFLA_BR_MCAST_MLD_VERSION] = decode_nla_u8,
};
bool
decode_nla_linkinfo_data_bridge(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
decode_nlattr(tcp, addr, len, rtnl_ifla_info_data_bridge_attrs,
"IFLA_BR_???",
ARRSZ_PAIR(ifla_info_data_bridge_nla_decoders),
opaque_data);
return true;
}
static bool
decode_nla_tun_type(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
const struct decode_nla_xlat_opts opts = {
.xlat = tun_device_types,
.xlat_size = ARRAY_SIZE(tun_device_types),
.xt = XT_INDEXED,
.dflt = "IFF_???",
.size = 1,
};
return decode_nla_xval(tcp, addr, len, &opts);
}
static const nla_decoder_t ifla_info_data_tun_nla_decoders[] = {
[IFLA_TUN_UNSPEC] = NULL,
[IFLA_TUN_OWNER] = decode_nla_uid,
[IFLA_TUN_GROUP] = decode_nla_gid,
[IFLA_TUN_TYPE] = decode_nla_tun_type,
[IFLA_TUN_PI] = decode_nla_u8,
[IFLA_TUN_VNET_HDR] = decode_nla_u8,
[IFLA_TUN_PERSIST] = decode_nla_u8,
[IFLA_TUN_MULTI_QUEUE] = decode_nla_u8,
[IFLA_TUN_NUM_QUEUES] = decode_nla_u32,
[IFLA_TUN_NUM_DISABLED_QUEUES] = decode_nla_u32,
};
bool
decode_nla_linkinfo_data_tun(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
decode_nlattr(tcp, addr, len, rtnl_ifla_info_data_tun_attrs,
"IFLA_TUN_???",
ARRSZ_PAIR(ifla_info_data_tun_nla_decoders),
opaque_data);
return true;
}
bool
decode_nla_linkinfo_data(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct ifla_linkinfo_ctx *ctx = (void *) opaque_data;
nla_decoder_t func = NULL;
if (!strcmp(ctx->kind, "bridge"))
func = decode_nla_linkinfo_data_bridge;
else if (!strcmp(ctx->kind, "tun"))
func = decode_nla_linkinfo_data_tun;
if (func)
return func(tcp, addr, len, opaque_data);
return false;
}
static const nla_decoder_t ifla_linkinfo_nla_decoders[] = {
[IFLA_INFO_KIND] = decode_nla_linkinfo_kind,
[IFLA_INFO_DATA] = decode_nla_linkinfo_data,
[IFLA_INFO_XSTATS] = decode_nla_linkinfo_xstats,
[IFLA_INFO_SLAVE_KIND] = decode_nla_str,
[IFLA_INFO_SLAVE_DATA] = NULL, /* unimplemented */
};
static bool
decode_ifla_linkinfo(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct ifla_linkinfo_ctx ctx = { .kind = "", };
decode_nlattr(tcp, addr, len, rtnl_ifla_info_attrs,
"IFLA_INFO_???", ARRSZ_PAIR(ifla_linkinfo_nla_decoders),
&ctx);
return true;
}
static bool
decode_rtnl_link_stats64(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
#ifdef HAVE_STRUCT_RTNL_LINK_STATS64
struct rtnl_link_stats64 st;
const unsigned int min_size =
offsetofend(struct rtnl_link_stats64, tx_compressed);
const unsigned int def_size = sizeof(st);
const unsigned int size =
(len >= def_size) ? def_size :
((len == min_size) ? min_size : 0);
if (!size)
return false;
if (!umoven_or_printaddr(tcp, addr, size, &st)) {
PRINT_FIELD_U("{", st, rx_packets);
PRINT_FIELD_U(", ", st, tx_packets);
PRINT_FIELD_U(", ", st, rx_bytes);
PRINT_FIELD_U(", ", st, tx_bytes);
PRINT_FIELD_U(", ", st, rx_errors);
PRINT_FIELD_U(", ", st, tx_errors);
PRINT_FIELD_U(", ", st, rx_dropped);
PRINT_FIELD_U(", ", st, tx_dropped);
PRINT_FIELD_U(", ", st, multicast);
PRINT_FIELD_U(", ", st, collisions);
PRINT_FIELD_U(", ", st, rx_length_errors);
PRINT_FIELD_U(", ", st, rx_over_errors);
PRINT_FIELD_U(", ", st, rx_crc_errors);
PRINT_FIELD_U(", ", st, rx_frame_errors);
PRINT_FIELD_U(", ", st, rx_fifo_errors);
PRINT_FIELD_U(", ", st, rx_missed_errors);
PRINT_FIELD_U(", ", st, tx_aborted_errors);
PRINT_FIELD_U(", ", st, tx_carrier_errors);
PRINT_FIELD_U(", ", st, tx_fifo_errors);
PRINT_FIELD_U(", ", st, tx_heartbeat_errors);
PRINT_FIELD_U(", ", st, tx_window_errors);
PRINT_FIELD_U(", ", st, rx_compressed);
PRINT_FIELD_U(", ", st, tx_compressed);
#ifdef HAVE_STRUCT_RTNL_LINK_STATS64_RX_NOHANDLER
if (len >= def_size)
PRINT_FIELD_U(", ", st, rx_nohandler);
#endif
tprints("}");
}
return true;
#else
return false;
#endif
}
static bool
decode_ifla_port_vsi(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
#ifdef HAVE_STRUCT_IFLA_PORT_VSI
struct ifla_port_vsi vsi;
if (len < sizeof(vsi))
return false;
else if (!umove_or_printaddr(tcp, addr, &vsi)) {
PRINT_FIELD_U("{", vsi, vsi_mgr_id);
PRINT_FIELD_STRING(", ", vsi, vsi_type_id,
sizeof(vsi.vsi_type_id), QUOTE_FORCE_HEX);
PRINT_FIELD_U(", ", vsi, vsi_type_version);
tprints("}");
}
return true;
#else
return false;
#endif
}
static const nla_decoder_t ifla_port_nla_decoders[] = {
[IFLA_PORT_VF] = decode_nla_u32,
[IFLA_PORT_PROFILE] = decode_nla_str,
[IFLA_PORT_VSI_TYPE] = decode_ifla_port_vsi,
[IFLA_PORT_INSTANCE_UUID] = NULL, /* default parser */
[IFLA_PORT_HOST_UUID] = NULL, /* default parser */
[IFLA_PORT_REQUEST] = decode_nla_u8,
[IFLA_PORT_RESPONSE] = decode_nla_u16
};
static bool
decode_ifla_port(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
decode_nlattr(tcp, addr, len, rtnl_ifla_port_attrs,
"IFLA_VF_PORT_???", ARRSZ_PAIR(ifla_port_nla_decoders),
opaque_data);
return true;
}
static const nla_decoder_t ifla_vf_port_nla_decoders[] = {
[IFLA_VF_PORT] = decode_ifla_port
};
static bool
decode_ifla_vf_ports(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
decode_nlattr(tcp, addr, len, rtnl_ifla_vf_port_attrs,
"IFLA_VF_PORT_???", ARRSZ_PAIR(ifla_vf_port_nla_decoders),
opaque_data);
return true;
}
static bool
decode_ifla_xdp_flags(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
uint32_t flags;
if (len < sizeof(flags))
return false;
else if (!umove_or_printaddr(tcp, addr, &flags))
printflags(xdp_flags, flags, "XDP_FLAGS_???");
return true;
}
bool
decode_ifla_xdp_attached(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
const struct decode_nla_xlat_opts opts = {
.xlat = rtnl_ifla_xdp_attached_mode,
.xlat_size = ARRAY_SIZE(rtnl_ifla_xdp_attached_mode),
.xt = XT_INDEXED,
.dflt = "XDP_ATTACHED_???",
.size = 1,
};
return decode_nla_xval(tcp, addr, len, &opts);
}
static const nla_decoder_t ifla_xdp_nla_decoders[] = {
[IFLA_XDP_FD] = decode_nla_fd,
[IFLA_XDP_ATTACHED] = decode_ifla_xdp_attached,
[IFLA_XDP_FLAGS] = decode_ifla_xdp_flags,
[IFLA_XDP_PROG_ID] = decode_nla_u32,
[IFLA_XDP_DRV_PROG_ID] = decode_nla_u32,
[IFLA_XDP_SKB_PROG_ID] = decode_nla_u32,
[IFLA_XDP_HW_PROG_ID] = decode_nla_u32,
};
static bool
decode_ifla_xdp(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
decode_nlattr(tcp, addr, len, rtnl_ifla_xdp_attrs,
"IFLA_XDP_???", ARRSZ_PAIR(ifla_xdp_nla_decoders),
opaque_data);
return true;
}
static bool
decode_ifla_event(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
uint32_t ev;
if (len < sizeof(ev))
return false;
else if (!umove_or_printaddr(tcp, addr, &ev))
printxval(rtnl_ifla_events, ev, "IFLA_EVENT_???");
return true;
}
static bool
decode_ifla_inet_conf(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
int elem;
size_t cnt = len / sizeof(elem);
if (!cnt)
return false;
print_array_ex(tcp, addr, cnt, &elem, sizeof(elem),
tfetch_mem, print_int32_array_member, NULL,
PAF_PRINT_INDICES | PAF_INDEX_XLAT_VALUE_INDEXED
| XLAT_STYLE_FMT_D, ARRSZ_PAIR(inet_devconf_indices),
"IPV4_DEVCONF_???");
return true;
}
static const nla_decoder_t ifla_inet_nla_decoders[] = {
[IFLA_INET_CONF] = decode_ifla_inet_conf,
};
static bool
decode_ifla_inet6_flags(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
const struct decode_nla_xlat_opts opts = {
ARRSZ_PAIR(inet6_if_flags), "IF_???",
.size = 4,
};
return decode_nla_flags(tcp, addr, len, &opts);
}
static bool
decode_ifla_inet6_conf(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
int elem;
size_t cnt = len / sizeof(elem);
if (!cnt)
return false;
print_array_ex(tcp, addr, cnt, &elem, sizeof(elem),
tfetch_mem, print_int32_array_member, NULL,
PAF_PRINT_INDICES | PAF_INDEX_XLAT_VALUE_INDEXED
| XLAT_STYLE_FMT_D, ARRSZ_PAIR(inet6_devconf_indices),
"DEVCONF_???");
return true;
}
static bool
decode_ifla_inet6_stats(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
uint64_t elem;
size_t cnt = len / sizeof(elem);
if (!cnt)
return false;
print_array_ex(tcp, addr, cnt, &elem, sizeof(elem),
tfetch_mem, print_uint64_array_member, NULL,
PAF_PRINT_INDICES | PAF_INDEX_XLAT_VALUE_INDEXED
| XLAT_STYLE_FMT_U, ARRSZ_PAIR(snmp_ip_stats),
"IPSTATS_MIB_???");
return true;
}
static bool
decode_ifla_inet6_cacheinfo(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct {
uint32_t max_reasm_len;
uint32_t tstamp;
uint32_t reachable_time;
uint32_t retrans_time;
} ci;
if (len < sizeof(ci))
return false;
else if (!umove_or_printaddr(tcp, addr, &ci)) {
PRINT_FIELD_U("{", ci, max_reasm_len);
PRINT_FIELD_U(", ", ci, tstamp);
PRINT_FIELD_U(", ", ci, reachable_time);
PRINT_FIELD_U(", ", ci, retrans_time);
tprints("}");
}
return true;
}
static bool
decode_ifla_inet6_icmp6_stats(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
uint64_t elem;
size_t cnt = len / sizeof(elem);
if (!cnt)
return false;
print_array_ex(tcp, addr, cnt, &elem, sizeof(elem),
tfetch_mem, print_uint64_array_member, NULL,
PAF_PRINT_INDICES | PAF_INDEX_XLAT_VALUE_INDEXED
| XLAT_STYLE_FMT_U, ARRSZ_PAIR(snmp_icmp6_stats),
"ICMP6_MIB_???");
return true;
}
static bool
decode_ifla_inet6_agm(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
const struct decode_nla_xlat_opts opts = {
ARRSZ_PAIR(in6_addr_gen_mode), "IN6_ADDR_GEN_MODE_???",
.xt = XT_INDEXED,
.size = 1,
};
return decode_nla_xval(tcp, addr, len, &opts);
}
static const nla_decoder_t ifla_inet6_nla_decoders[] = {
[IFLA_INET6_FLAGS] = decode_ifla_inet6_flags,
[IFLA_INET6_CONF] = decode_ifla_inet6_conf,
[IFLA_INET6_STATS] = decode_ifla_inet6_stats,
[IFLA_INET6_MCAST] = NULL, /* unused */
[IFLA_INET6_CACHEINFO] = decode_ifla_inet6_cacheinfo,
[IFLA_INET6_ICMP6STATS] = decode_ifla_inet6_icmp6_stats,
[IFLA_INET6_TOKEN] = decode_nla_in6_addr,
[IFLA_INET6_ADDR_GEN_MODE] = decode_ifla_inet6_agm,
};
static const struct nla_decoder_table_desc {
const struct xlat *xlat;
const char *dflt;
const nla_decoder_t *table;
size_t size;
} ifla_af_spec_protos[] = {
[AF_INET] = {
rtnl_ifla_af_spec_inet_attrs, "IFLA_INET_???",
ARRSZ_PAIR(ifla_inet_nla_decoders),
},
[AF_INET6] = {
rtnl_ifla_af_spec_inet6_attrs, "IFLA_INET6_???",
ARRSZ_PAIR(ifla_inet6_nla_decoders),
},
};
static bool
decode_ifla_af(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
uintptr_t proto = (uintptr_t) opaque_data;
const struct nla_decoder_table_desc *desc
= proto < ARRAY_SIZE(ifla_af_spec_protos)
? ifla_af_spec_protos + proto : NULL;
if (!desc || !desc->table)
return false;
decode_nlattr(tcp, addr, len,
desc->xlat, desc->dflt, desc->table, desc->size, NULL);
return true;
}
static bool
decode_ifla_af_spec(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
nla_decoder_t af_spec_decoder = &decode_ifla_af;
decode_nlattr(tcp, addr, len, addrfams, "AF_???",
&af_spec_decoder, 0, opaque_data);
return true;
}
static const nla_decoder_t ifinfomsg_nla_decoders[] = {
[IFLA_ADDRESS] = NULL, /* unimplemented */
[IFLA_BROADCAST] = NULL, /* unimplemented */
[IFLA_IFNAME] = decode_nla_str,
[IFLA_MTU] = decode_nla_u32,
[IFLA_LINK] = decode_nla_u32,
[IFLA_QDISC] = decode_nla_str,
[IFLA_STATS] = decode_rtnl_link_stats,
[IFLA_COST] = NULL, /* unused */
[IFLA_PRIORITY] = NULL, /* unused */
[IFLA_MASTER] = decode_nla_u32,
[IFLA_WIRELESS] = NULL, /* unimplemented */
[IFLA_PROTINFO] = decode_ifla_protinfo,
[IFLA_TXQLEN] = decode_nla_u32,
[IFLA_MAP] = decode_rtnl_link_ifmap,
[IFLA_WEIGHT] = decode_nla_u32,
[IFLA_OPERSTATE] = decode_nla_u8,
[IFLA_LINKMODE] = decode_nla_u8,
[IFLA_LINKINFO] = decode_ifla_linkinfo,
[IFLA_NET_NS_PID] = decode_nla_u32,
[IFLA_IFALIAS] = decode_nla_str,
[IFLA_NUM_VF] = decode_nla_u32,
[IFLA_VFINFO_LIST] = NULL, /* unimplemented */
[IFLA_STATS64] = decode_rtnl_link_stats64,
[IFLA_VF_PORTS] = decode_ifla_vf_ports,
[IFLA_PORT_SELF] = decode_ifla_port,
[IFLA_AF_SPEC] = decode_ifla_af_spec,
[IFLA_GROUP] = decode_nla_u32,
[IFLA_NET_NS_FD] = decode_nla_fd,
[IFLA_EXT_MASK] = decode_nla_u32,
[IFLA_PROMISCUITY] = decode_nla_u32,
[IFLA_NUM_TX_QUEUES] = decode_nla_u32,
[IFLA_NUM_RX_QUEUES] = decode_nla_u32,
[IFLA_CARRIER] = decode_nla_u8,
[IFLA_PHYS_PORT_ID] = NULL, /* default parser */
[IFLA_CARRIER_CHANGES] = decode_nla_u32,
[IFLA_PHYS_SWITCH_ID] = NULL, /* default parser */
[IFLA_LINK_NETNSID] = decode_nla_s32,
[IFLA_PHYS_PORT_NAME] = decode_nla_str,
[IFLA_PROTO_DOWN] = decode_nla_u8,
[IFLA_GSO_MAX_SEGS] = decode_nla_u32,
[IFLA_GSO_MAX_SIZE] = decode_nla_u32,
[IFLA_PAD] = NULL,
[IFLA_XDP] = decode_ifla_xdp,
[IFLA_EVENT] = decode_ifla_event,
[IFLA_NEW_NETNSID] = decode_nla_s32,
[IFLA_IF_NETNSID] = decode_nla_s32,
[IFLA_CARRIER_UP_COUNT] = decode_nla_u32,
[IFLA_CARRIER_DOWN_COUNT] = decode_nla_u32,
[IFLA_NEW_IFINDEX] = decode_nla_ifindex,
[IFLA_MIN_MTU] = decode_nla_u32,
[IFLA_MAX_MTU] = decode_nla_u32,
};
DECL_NETLINK_ROUTE_DECODER(decode_ifinfomsg)
{
struct ifinfomsg ifinfo = { .ifi_family = family };
size_t offset = sizeof(ifinfo.ifi_family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", ifinfo, ifi_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(ifinfo)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(ifinfo) - offset,
(char *) &ifinfo + offset)) {
PRINT_FIELD_XVAL_SORTED_SIZED("", ifinfo, ifi_type,
arp_hardware_types,
arp_hardware_types_size,
"ARPHRD_???");
PRINT_FIELD_IFINDEX(", ", ifinfo, ifi_index);
PRINT_FIELD_FLAGS(", ", ifinfo, ifi_flags,
iffflags, "IFF_???");
PRINT_FIELD_X(", ", ifinfo, ifi_change);
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLMSG_ALIGN(sizeof(ifinfo));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
rtnl_link_attrs, "IFLA_???",
ARRSZ_PAIR(ifinfomsg_nla_decoders), NULL);
}
}