Hi, This series is v3 of the replacement of jprobe usage with trace events. In this version fix build errors occured by including events/tcp.h twice, and some updates. Previous version is here; https://lkml.org/lkml/2017/12/18/126 Changes from v2: [1/6] Fix build errors by removing redundant events/tcp.h including in net/core/net-traces.c. And sort out include headers. [3/6] Check sctp_probe_path event is enabled before iterating sctp paths. Please review it and test it. Here are examples how to use it. >From https://wiki.linuxfoundation.org/networking/tcpprobe This example, # modprobe tcp_probe port=5001 # cat /proc/net/tcpprobe >/tmp/data.out & # pid=$! # iperf -c otherhost # kill $pid will be changed as below; # cd <debugfs or tracefs>/tracing # echo 1 > events/tcp/tcp_probe/enable # echo "sport == 5001 || dport == 5001" > events/tcp/tcp_probe/filter # tail -f trace_pipe > /tmp/data.out & # pid=$! # iperf -c otherhost # kill $pid And it outouts logs lile below; # tracer: nop # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | <idle>-0 [000] ..s2 1089.238049: tcp_probe: src=[::ffff:192.168.139.2]:5001 dest=[::ffff:192.168.139.1]:56256 mark=0x0 length=37 snd_nxt=0xee4abe9c snd_una=0xee4abe9c snd_cwnd=10 ssthresh=2147483647 snd_wnd=29312 srtt=478 rcv_wnd=28960 <idle>-0 [000] ..s2 1090.156938: tcp_probe: src=[::ffff:192.168.139.2]:5001 dest=[::ffff:192.168.139.1]:56256 mark=0x0 length=37 snd_nxt=0xee4abe9c snd_una=0xee4abe9c snd_cwnd=10 ssthresh=2147483647 snd_wnd=29312 srtt=478 rcv_wnd=28992 <idle>-0 [000] ..s2 1091.333729: tcp_probe: src=[::ffff:192.168.139.2]:5001 dest=[::ffff:192.168.139.1]:56256 mark=0x0 length=38 snd_nxt=0xee4abe9c snd_una=0xee4abe9c snd_cwnd=10 ssthresh=2147483647 snd_wnd=29312 srtt=478 rcv_wnd=28992 <idle>-0 [000] ..s2 1092.300330: tcp_probe: src=[::ffff:192.168.139.2]:5001 dest=[::ffff:192.168.139.1]:56256 mark=0x0 length=37 snd_nxt=0xee4abe9c snd_una=0xee4abe9c snd_cwnd=10 ssthresh=2147483647 snd_wnd=29312 srtt=478 rcv_wnd=28992 <idle>-0 [000] ..s2 1095.044739: tcp_probe: src=[::ffff:192.168.139.2]:5001 dest=[::ffff:192.168.139.1]:56256 mark=0x0 length=36 snd_nxt=0xee4abe9c snd_una=0xee4abe9c snd_cwnd=10 ssthresh=2147483647 snd_wnd=29312 srtt=478 rcv_wnd=28992 <idle>-0 [000] ..s2 1096.573825: tcp_probe: src=[::ffff:192.168.139.2]:5001 dest=[::ffff:192.168.139.1]:56256 mark=0x0 length=32 snd_nxt=0xee4abe9c snd_una=0xee4abe9c snd_cwnd=10 ssthresh=2147483647 snd_wnd=29312 srtt=478 rcv_wnd=28992 I need your feedback for this change, like formatting etc. Also, I need more test for this events by who can setup DCCP and SCTP, since those are special protocols, I have no environment to test it. Thank you, --- Masami Hiramatsu (6): net: tcp: Add trace events for TCP congestion window tracing net: tcp: Remove TCP probe module net: sctp: Add SCTP ACK tracking trace event net: sctp: Remove debug SCTP probe module net: dccp: Add DCCP sendmsg trace event net: dccp: Remove dccpprobe module include/trace/events/sctp.h | 98 ++++++++++++++ include/trace/events/tcp.h | 80 +++++++++++ net/Kconfig | 17 -- net/dccp/Kconfig | 17 -- net/dccp/Makefile | 2 net/dccp/probe.c | 203 ----------------------------- net/dccp/proto.c | 5 + net/dccp/trace.h | 105 +++++++++++++++ net/ipv4/Makefile | 1 net/ipv4/tcp_input.c | 3 net/ipv4/tcp_probe.c | 301 ------------------------------------------- net/sctp/Kconfig | 12 -- net/sctp/Makefile | 3 net/sctp/probe.c | 244 ----------------------------------- net/sctp/sm_statefuns.c | 5 + 15 files changed, 296 insertions(+), 800 deletions(-) create mode 100644 include/trace/events/sctp.h delete mode 100644 net/dccp/probe.c create mode 100644 net/dccp/trace.h delete mode 100644 net/ipv4/tcp_probe.c delete mode 100644 net/sctp/probe.c -- Masami Hiramatsu (Linaro) <mhiramat@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe dccp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
