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-rw-r--r--Documentation/networking/mptcp-sysctl.rst2
-rw-r--r--net/mptcp/ctrl.c4
2 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/networking/mptcp-sysctl.rst b/Documentation/networking/mptcp-sysctl.rst
index dc45c0211353..03e1d3610333 100644
--- a/Documentation/networking/mptcp-sysctl.rst
+++ b/Documentation/networking/mptcp-sysctl.rst
@@ -41,7 +41,7 @@ blackhole_timeout - INTEGER (seconds)
MPTCP is re-enabled and will reset to the initial value when the
blackhole issue goes away.
- 0 to disable the blackhole detection.
+ 0 to disable the blackhole detection. This is a per-namespace sysctl.
Default: 3600
diff --git a/net/mptcp/ctrl.c b/net/mptcp/ctrl.c
index 3999e0ba2c35..2dd81e6c26bd 100644
--- a/net/mptcp/ctrl.c
+++ b/net/mptcp/ctrl.c
@@ -418,9 +418,9 @@ void mptcp_active_detect_blackhole(struct sock *ssk, bool expired)
MPTCP_INC_STATS(net, MPTCP_MIB_MPCAPABLEACTIVEDROP);
subflow->mpc_drop = 1;
mptcp_subflow_early_fallback(mptcp_sk(subflow->conn), subflow);
- } else {
- subflow->mpc_drop = 0;
}
+ } else if (ssk->sk_state == TCP_SYN_SENT) {
+ subflow->mpc_drop = 0;
}
}