rtnl_tc: decode tcmsg netlink attributes
* configure.ac (AC_CHECK_TYPES): Check for gnet_stats_basic, gnet_stats_queue, gnet_stats_rate_est, and gnet_stats_rate_est64 structures in <linux/gen_stats.h>. And check for struct tc_sizespec in <linux/pkt_sched.h>. * nlattr.h (tc_stats): New prototype. * rtnl_tc.c: Include <linux/gen_stats.h>, <linux/pkt_sched.h>, "xlat/rtnl_tca_stab_attrs.h" and "xlat/rtnl_tca_stats_attrs.h". (decode_tc_stats, decode_tc_estimator, decode_gnet_stats_basic, decode_gnet_stats_rate_est, decode_gnet_stats_queue, decode_gnet_stats_rate_est64, decode_nla_tc_stats, decode_tc_sizespec, print_stab_data, decode_tca_stab_data, decode_tca_stab): New functions. (tca_stats_nla_decoders, tca_stab_nla_decoders, tcmsg_nla_decoders): New arrays. (decode_tcmsg): Use tcmsg_nla_decoders. * xlat/rtnl_tca_stab_attrs.in: New file. * xlat/rtnl_tca_stats_attrs.in: Likewise.
This commit is contained in:
JingPiao Chen
parent
68d00ce2d6
commit
d3cbd56ef3
@ -474,6 +474,15 @@ AC_CHECK_MEMBERS(m4_normalize([
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struct rtnl_link_stats64.rx_nohandler
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]),,, [#include <linux/if_link.h>])
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AC_CHECK_TYPES(m4_normalize([
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struct gnet_stats_basic,
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struct gnet_stats_queue,
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struct gnet_stats_rate_est,
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struct gnet_stats_rate_est64
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]),,, [#include <linux/gen_stats.h>])
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AC_CHECK_TYPES([struct tc_sizespec],,, [#include <linux/pkt_sched.h>])
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AC_CHECK_TYPES([struct fib_rule_uid_range],,, [#include <linux/fib_rules.h>])
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AC_CHECK_TYPES([struct statfs], [
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1
nlattr.h
1
nlattr.h
@ -63,5 +63,6 @@ DECL_NLA(strn);
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DECL_NLA(ifindex);
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DECL_NLA(meminfo);
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DECL_NLA(rt_class);
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DECL_NLA(tc_stats);
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#endif /* !STRACE_NLATTR_H */
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262
rtnl_tc.c
262
rtnl_tc.c
@ -33,9 +33,268 @@
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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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};
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DECL_NETLINK_ROUTE_DECODER(decode_tcmsg)
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{
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@ -64,6 +323,7 @@ DECL_NETLINK_ROUTE_DECODER(decode_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_???", NULL, 0, NULL);
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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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3
xlat/rtnl_tca_stab_attrs.in
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3
xlat/rtnl_tca_stab_attrs.in
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@ -0,0 +1,3 @@
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TCA_STAB_UNSPEC 0
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TCA_STAB_BASE 1
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TCA_STAB_DATA 2
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7
xlat/rtnl_tca_stats_attrs.in
Normal file
7
xlat/rtnl_tca_stats_attrs.in
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@ -0,0 +1,7 @@
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TCA_STATS_UNSPEC 0
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TCA_STATS_BASIC 1
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TCA_STATS_RATE_EST 2
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TCA_STATS_QUEUE 3
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TCA_STATS_APP 4
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TCA_STATS_RATE_EST64 5
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TCA_STATS_PAD 6
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