tcpaccept: only show TCP accept event (iovisor#2232)

pr iovisor#1842 forgot to add filtering in the new tracepoint code so it's incorrectly showing every sock:inet_sock_set_state event. This patch fixes that.
weibang6liu · Feb 26, 2019 · 2ebdf16 · 2ebdf16
1 parent e8ece56
commit 2ebdf16
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/tools/tcpaccept.py b/tools/tcpaccept.py
@@ -161,6 +161,8 @@
 {
  if (args->protocol != IPPROTO_TCP)
  return 0;
+ if (args->oldstate != TCP_SYN_RECV || args->newstate != TCP_ESTABLISHED)
+ return 0;
  u32 pid = bpf_get_current_pid_tgid();
 
  ##FILTER_PID##