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authorSong Liu <songliubraving@fb.com>2017-10-23 09:20:25 -0700
committerDavid S. Miller <davem@davemloft.net>2017-10-24 01:21:25 +0100
commit5941521c05d69cf3f2b1293eefd21207e083b70f (patch)
treee0e83703eba1f20b57feef5adc96fc425ca8d30f /net/ipv4/tcp_input.c
parentc24b14c46bb88d844275de5c4024c8745ae89d42 (diff)
tcp: add tracepoint trace_tcp_receive_reset
New tracepoint trace_tcp_receive_reset is added and called from tcp_reset(). This tracepoint is define with a new class tcp_event_sk. Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_input.c')
-rw-r--r--net/ipv4/tcp_input.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index ab3f12898245..c5e64d4b5839 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -75,6 +75,7 @@
#include <linux/ipsec.h>
#include <asm/unaligned.h>
#include <linux/errqueue.h>
+#include <trace/events/tcp.h>
int sysctl_tcp_fack __read_mostly;
int sysctl_tcp_max_reordering __read_mostly = 300;
@@ -4010,6 +4011,8 @@ static inline bool tcp_sequence(const struct tcp_sock *tp, u32 seq, u32 end_seq)
/* When we get a reset we do this. */
void tcp_reset(struct sock *sk)
{
+ trace_tcp_receive_reset(sk);
+
/* We want the right error as BSD sees it (and indeed as we do). */
switch (sk->sk_state) {
case TCP_SYN_SENT: