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| author | Song Liu <songliubraving@fb.com> | 2017-10-23 09:20:24 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-24 01:21:25 +0100 |
| commit | c24b14c46bb88d844275de5c4024c8745ae89d42 (patch) | |
| tree | 154799c41e973a6e11af451da070719d5fab8a64 /net/ipv4/tcp_output.c | |
| parent | 7344e29f285a94b965075599731811c352f3ab40 (diff) | |
| download | lwn-c24b14c46bb88d844275de5c4024c8745ae89d42.tar.gz lwn-c24b14c46bb88d844275de5c4024c8745ae89d42.zip | |
tcp: add tracepoint trace_tcp_send_reset
New tracepoint trace_tcp_send_reset is added and called from
tcp_v4_send_reset(), tcp_v6_send_reset() and tcp_send_active_reset().
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_output.c')
| -rw-r--r-- | net/ipv4/tcp_output.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 988733f289c8..1f01f4c9c738 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -3084,6 +3084,11 @@ void tcp_send_active_reset(struct sock *sk, gfp_t priority) /* Send it off. */ if (tcp_transmit_skb(sk, skb, 0, priority)) NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPABORTFAILED); + + /* skb of trace_tcp_send_reset() keeps the skb that caused RST, + * skb here is different to the troublesome skb, so use NULL + */ + trace_tcp_send_reset(sk, NULL); } /* Send a crossed SYN-ACK during socket establishment. |