From: Florian Westphal <[email protected]>
Send logic caches last active subflow in the msk, so it needs to be
cleared when the cached subflow is closed.
Fixes: d5f49190def61c ("mptcp: allow picking different xmit subflows")
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/155
Reported-by: Christoph Paasch <[email protected]>
Acked-by: Paolo Abeni <[email protected]>
Reviewed-by: Matthieu Baerts <[email protected]>
Signed-off-by: Florian Westphal <[email protected]>
Signed-off-by: Mat Martineau <[email protected]>
---
net/mptcp/protocol.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index c5d5e68940ea..7362a536cbc0 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -2126,6 +2126,8 @@ static struct sock *mptcp_subflow_get_retrans(const
struct mptcp_sock *msk)
static void __mptcp_close_ssk(struct sock *sk, struct sock *ssk,
struct mptcp_subflow_context *subflow)
{
+ struct mptcp_sock *msk = mptcp_sk(sk);
+
list_del(&subflow->node);
lock_sock_nested(ssk, SINGLE_DEPTH_NESTING);
@@ -2154,6 +2156,9 @@ static void __mptcp_close_ssk(struct sock *sk, struct
sock *ssk,
release_sock(ssk);
sock_put(ssk);
+
+ if (ssk == msk->last_snd)
+ msk->last_snd = NULL;
}
void mptcp_close_ssk(struct sock *sk, struct sock *ssk,
--
2.30.1
