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| author | Song Liu <songliubraving@fb.com> | 2017-10-23 09:20:27 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-24 01:21:25 +0100 |
| commit | e8fce23946b7e7eadf25ad78d8207c22903dfe27 (patch) | |
| tree | 16bd01b92a17441fc0e9cdcabc5501a49d689dd2 /net | |
| parent | e1a4aa50f47303ebb3ca0cfd01687884551ce03d (diff) | |
| download | linux-e8fce23946b7e7eadf25ad78d8207c22903dfe27.tar.gz linux-e8fce23946b7e7eadf25ad78d8207c22903dfe27.tar.bz2 linux-e8fce23946b7e7eadf25ad78d8207c22903dfe27.zip | |
tcp: add tracepoint trace_tcp_set_state()
This patch adds tracepoint trace_tcp_set_state. Besides usual fields
(s/d ports, IP addresses), old and new state of the socket is also
printed with TP_printk, with __print_symbolic().
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/tcp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 8b1fa4dd4538..be07e9b6dbdd 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -282,6 +282,8 @@ #include <asm/ioctls.h> #include <net/busy_poll.h> +#include <trace/events/tcp.h> + int sysctl_tcp_min_tso_segs __read_mostly = 2; int sysctl_tcp_autocorking __read_mostly = 1; @@ -2040,6 +2042,8 @@ void tcp_set_state(struct sock *sk, int state) { int oldstate = sk->sk_state; + trace_tcp_set_state(sk, oldstate, state); + switch (state) { case TCP_ESTABLISHED: if (oldstate != TCP_ESTABLISHED) |