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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_ipv4.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_ipv4.c')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index e22439f05e46..eb3f3b8e1e4b 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -85,6 +85,8 @@ #include <crypto/hash.h> #include <linux/scatterlist.h> +#include <trace/events/tcp.h> + #ifdef CONFIG_TCP_MD5SIG static int tcp_v4_md5_hash_hdr(char *md5_hash, const struct tcp_md5sig_key *key, __be32 daddr, __be32 saddr, const struct tcphdr *th); @@ -701,8 +703,10 @@ static void tcp_v4_send_reset(const struct sock *sk, struct sk_buff *skb) * routing might fail in this case. No choice here, if we choose to force * input interface, we will misroute in case of asymmetric route. */ - if (sk) + if (sk) { arg.bound_dev_if = sk->sk_bound_dev_if; + trace_tcp_send_reset(sk, skb); + } BUILD_BUG_ON(offsetof(struct sock, sk_bound_dev_if) != offsetof(struct inet_timewait_sock, tw_bound_dev_if)); |