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[v5,mptcp-next,2/3] mptcp: add sk_stop_timer_sync helper

Message ID fc30ac8f663d4b511663598b9ec4ff6ae1527a93.1600672866.git.geliangtang@gmail.com
State Accepted, archived
Delegated to: Matthieu Baerts
Headers show
Series mptcp: retransmit ADD_ADDR when timeout and others | expand

Commit Message

Geliang Tang Sept. 21, 2020, 7:30 a.m. UTC
This patch added a new helper sk_stop_timer_sync, it deactivates a timer
like sk_stop_timer, but waits for the handler to finish.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
 include/net/sock.h | 2 ++
 net/core/sock.c    | 7 +++++++
 2 files changed, 9 insertions(+)
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diff --git a/include/net/sock.h b/include/net/sock.h
index eaa5cac5e836..a5c6ae78df77 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -2195,6 +2195,8 @@  void sk_reset_timer(struct sock *sk, struct timer_list *timer,
 void sk_stop_timer(struct sock *sk, struct timer_list *timer);
+void sk_stop_timer_sync(struct sock *sk, struct timer_list *timer);
 int __sk_queue_drop_skb(struct sock *sk, struct sk_buff_head *sk_queue,
 			struct sk_buff *skb, unsigned int flags,
 			void (*destructor)(struct sock *sk,
diff --git a/net/core/sock.c b/net/core/sock.c
index ba9e7d91e2ef..d9a537e6876a 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -2947,6 +2947,13 @@  void sk_stop_timer(struct sock *sk, struct timer_list* timer)
+void sk_stop_timer_sync(struct sock *sk, struct timer_list *timer)
+	if (del_timer_sync(timer))
+		__sock_put(sk);
 void sock_init_data(struct socket *sock, struct sock *sk)