commit 2ebdf164c28fce81620b783cb73744b76da0714c
author Xiaozhou Liu <liuxiaozhou@bytedance.com> Wed Feb 27 05:20:12 2019 +0800
committer yonghong-song <ys114321@gmail.com> Tue Feb 26 13:20:12 2019 -0800
tree d96ee2b3db36eaf39060aac1e28748af76aa1743
parent e8ece5660ff5f4829dd156e831f79ce02109034c

tcpaccept: only show TCP accept event (#2232)

pr #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.

tools/tcpaccept.py

diff --git a/tools/tcpaccept.py b/tools/tcpaccept.py
index 5f7b48c..f606b73 100755
--- 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##