net: tracepoint: replace tcp_set_state tracepoint with inet_sock_set_state tracepoint
As sk_state is a common field for struct sock, so the state
transition tracepoint should not be a TCP specific feature.
Currently it traces all AF_INET state transition, so I rename this
tracepoint to inet_sock_set_state tracepoint with some minor changes and move it
into trace/events/sock.h.
We dont need to create a file named trace/events/inet_sock.h for this one single
tracepoint.
Two helpers are introduced to trace sk_state transition
- void inet_sk_state_store(struct sock *sk, int newstate);
- void inet_sk_set_state(struct sock *sk, int state);
As trace header should not be included in other header files,
so they are defined in sock.c.
The protocol such as SCTP maybe compiled as a ko, hence export
inet_sk_set_state().
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index 39efb96..a3431a4 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -290,6 +290,8 @@ static inline void inet_sk_copy_descendant(struct sock *sk_to,
#endif
int inet_sk_rebuild_header(struct sock *sk);
+void inet_sk_set_state(struct sock *sk, int state);
+void inet_sk_state_store(struct sock *sk, int newstate);
static inline unsigned int __inet_ehashfn(const __be32 laddr,
const __u16 lport,