d824282814
* xlat/rtnl_tc_attrs.in (TCA_HW_OFFLOAD, TCA_INGRESS_BLOCK, TCA_EGRESS_BLOCK): New constants introduced by linux kernel commits v4.15-rc4~13^2~5^2~2 and v4.16-rc1~123^2~139^2~5. * rtnl_tc.c (tcmsg_nla_decoders) <TCA_HW_OFFLOAD, TCA_INGRESS_BLOCK, TCA_EGRESS_BLOCK>: New items.
333 lines
8.6 KiB
C
333 lines
8.6 KiB
C
/*
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* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
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* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
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* Copyright (c) 2016-2018 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#include "netlink_route.h"
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#include "nlattr.h"
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#include "print_fields.h"
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#include "netlink.h"
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#ifdef HAVE_STRUCT_GNET_STATS_BASIC
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# include <linux/gen_stats.h>
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#endif
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#include <linux/pkt_sched.h>
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#include <linux/rtnetlink.h>
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#include "xlat/rtnl_tc_attrs.h"
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#include "xlat/rtnl_tca_stab_attrs.h"
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#include "xlat/rtnl_tca_stats_attrs.h"
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static bool
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decode_tc_stats(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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struct tc_stats st;
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const unsigned int sizeof_tc_stats =
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offsetofend(struct tc_stats, backlog);
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if (len < sizeof_tc_stats)
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return false;
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else if (!umoven_or_printaddr(tcp, addr, sizeof_tc_stats, &st)) {
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PRINT_FIELD_U("{", st, bytes);
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PRINT_FIELD_U(", ", st, packets);
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PRINT_FIELD_U(", ", st, drops);
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PRINT_FIELD_U(", ", st, overlimits);
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PRINT_FIELD_U(", ", st, bps);
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PRINT_FIELD_U(", ", st, pps);
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PRINT_FIELD_U(", ", st, qlen);
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PRINT_FIELD_U(", ", st, backlog);
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tprints("}");
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}
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return true;
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}
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static bool
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decode_tc_estimator(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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struct tc_estimator est;
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if (len < sizeof(est))
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return false;
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else if (!umove_or_printaddr(tcp, addr, &est)) {
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PRINT_FIELD_D("{", est, interval);
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PRINT_FIELD_U(", ", est, ewma_log);
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tprints("}");
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}
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return true;
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}
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static bool
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decode_gnet_stats_basic(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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#ifdef HAVE_STRUCT_GNET_STATS_BASIC
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struct gnet_stats_basic sb;
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const unsigned int sizeof_st_basic =
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offsetofend(struct gnet_stats_basic, packets);
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if (len < sizeof_st_basic)
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return false;
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else if (!umoven_or_printaddr(tcp, addr, sizeof_st_basic, &sb)) {
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PRINT_FIELD_U("{", sb, bytes);
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PRINT_FIELD_U(", ", sb, packets);
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tprints("}");
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}
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return true;
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#else
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return false;
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#endif
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}
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static bool
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decode_gnet_stats_rate_est(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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#ifdef HAVE_STRUCT_GNET_STATS_RATE_EST
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struct gnet_stats_rate_est est;
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if (len < sizeof(est))
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return false;
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else if (!umove_or_printaddr(tcp, addr, &est)) {
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PRINT_FIELD_U("{", est, bps);
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PRINT_FIELD_U(", ", est, pps);
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tprints("}");
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}
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return true;
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#else
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return false;
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#endif
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}
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static bool
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decode_gnet_stats_queue(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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#ifdef HAVE_STRUCT_GNET_STATS_QUEUE
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struct gnet_stats_queue qstats;
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if (len < sizeof(qstats))
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return false;
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else if (!umove_or_printaddr(tcp, addr, &qstats)) {
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PRINT_FIELD_U("{", qstats, qlen);
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PRINT_FIELD_U(", ", qstats, backlog);
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PRINT_FIELD_U(", ", qstats, drops);
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PRINT_FIELD_U(", ", qstats, requeues);
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PRINT_FIELD_U(", ", qstats, overlimits);
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tprints("}");
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}
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return true;
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#else
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return false;
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#endif
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}
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static bool
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decode_gnet_stats_rate_est64(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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#ifdef HAVE_STRUCT_GNET_STATS_RATE_EST64
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struct gnet_stats_rate_est64 est;
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if (len < sizeof(est))
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return false;
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else if (!umove_or_printaddr(tcp, addr, &est)) {
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PRINT_FIELD_U("{", est, bps);
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PRINT_FIELD_U(", ", est, pps);
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tprints("}");
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}
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return true;
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#else
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return false;
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#endif
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}
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static const nla_decoder_t tca_stats_nla_decoders[] = {
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[TCA_STATS_BASIC] = decode_gnet_stats_basic,
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[TCA_STATS_RATE_EST] = decode_gnet_stats_rate_est,
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[TCA_STATS_QUEUE] = decode_gnet_stats_queue,
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[TCA_STATS_APP] = NULL, /* unimplemented */
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[TCA_STATS_RATE_EST64] = decode_gnet_stats_rate_est64,
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[TCA_STATS_PAD] = NULL,
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};
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bool
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decode_nla_tc_stats(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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decode_nlattr(tcp, addr, len, rtnl_tca_stats_attrs, "TCA_STATS_???",
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tca_stats_nla_decoders,
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ARRAY_SIZE(tca_stats_nla_decoders), opaque_data);
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return true;
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}
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static bool
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decode_tc_sizespec(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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#ifdef HAVE_STRUCT_TC_SIZESPEC
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struct tc_sizespec s;
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if (len < sizeof(s))
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return false;
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else if (!umove_or_printaddr(tcp, addr, &s)) {
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PRINT_FIELD_U("{", s, cell_log);
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PRINT_FIELD_U(", ", s, size_log);
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PRINT_FIELD_D(", ", s, cell_align);
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PRINT_FIELD_D(", ", s, overhead);
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PRINT_FIELD_U(", ", s, linklayer);
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PRINT_FIELD_U(", ", s, mpu);
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PRINT_FIELD_U(", ", s, mtu);
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PRINT_FIELD_U(", ", s, tsize);
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tprints("}");
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}
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return true;
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#else
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return false;
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#endif
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}
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static bool
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print_stab_data(struct tcb *const tcp, void *const elem_buf,
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const size_t elem_size, void *const opaque_data)
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{
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tprintf("%" PRIu16, *(uint16_t *) elem_buf);
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return true;
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}
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static bool
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decode_tca_stab_data(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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uint16_t data;
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const size_t nmemb = len / sizeof(data);
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if (!nmemb)
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return false;
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print_array(tcp, addr, nmemb, &data, sizeof(data),
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umoven_or_printaddr, print_stab_data, NULL);
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return true;
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}
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static const nla_decoder_t tca_stab_nla_decoders[] = {
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[TCA_STAB_BASE] = decode_tc_sizespec,
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[TCA_STAB_DATA] = decode_tca_stab_data
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};
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static bool
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decode_tca_stab(struct tcb *const tcp,
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const kernel_ulong_t addr,
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const unsigned int len,
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const void *const opaque_data)
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{
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decode_nlattr(tcp, addr, len, rtnl_tca_stab_attrs, "TCA_STAB_???",
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tca_stab_nla_decoders,
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ARRAY_SIZE(tca_stab_nla_decoders), opaque_data);
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return true;
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}
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static const nla_decoder_t tcmsg_nla_decoders[] = {
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[TCA_KIND] = decode_nla_str,
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[TCA_OPTIONS] = NULL, /* unimplemented */
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[TCA_STATS] = decode_tc_stats,
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[TCA_XSTATS] = NULL, /* unimplemented */
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[TCA_RATE] = decode_tc_estimator,
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[TCA_FCNT] = decode_nla_u32,
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[TCA_STATS2] = decode_nla_tc_stats,
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[TCA_STAB] = decode_tca_stab,
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[TCA_PAD] = NULL,
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[TCA_DUMP_INVISIBLE] = NULL,
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[TCA_CHAIN] = decode_nla_u32,
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[TCA_HW_OFFLOAD] = decode_nla_u8,
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[TCA_INGRESS_BLOCK] = decode_nla_u32,
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[TCA_EGRESS_BLOCK] = decode_nla_u32,
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};
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DECL_NETLINK_ROUTE_DECODER(decode_tcmsg)
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{
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struct tcmsg tcmsg = { .tcm_family = family };
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size_t offset = sizeof(tcmsg.tcm_family);
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bool decode_nla = false;
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PRINT_FIELD_XVAL("{", tcmsg, tcm_family, addrfams, "AF_???");
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tprints(", ");
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if (len >= sizeof(tcmsg)) {
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if (!umoven_or_printaddr(tcp, addr + offset,
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sizeof(tcmsg) - offset,
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(char *) &tcmsg + offset)) {
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PRINT_FIELD_IFINDEX("", tcmsg, tcm_ifindex);
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PRINT_FIELD_U(", ", tcmsg, tcm_handle);
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PRINT_FIELD_U(", ", tcmsg, tcm_parent);
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PRINT_FIELD_U(", ", tcmsg, tcm_info);
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decode_nla = true;
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}
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} else
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tprints("...");
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tprints("}");
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offset = NLMSG_ALIGN(sizeof(tcmsg));
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if (decode_nla && len > offset) {
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tprints(", ");
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decode_nlattr(tcp, addr + offset, len - offset,
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rtnl_tc_attrs, "TCA_???", tcmsg_nla_decoders,
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ARRAY_SIZE(tcmsg_nla_decoders), NULL);
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}
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}
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