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Diffstat (limited to 'net/mptcp/options.c')
-rw-r--r--net/mptcp/options.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index eadbd59586e4..ecf41d52d2fc 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -703,8 +703,6 @@ static bool check_fully_established(struct mptcp_sock *msk, struct sock *sk,
goto fully_established;
}
- WARN_ON_ONCE(subflow->can_ack);
-
/* If the first established packet does not contain MP_CAPABLE + data
* then fallback to TCP
*/
@@ -714,6 +712,8 @@ static bool check_fully_established(struct mptcp_sock *msk, struct sock *sk,
return false;
}
+ if (unlikely(!READ_ONCE(msk->pm.server_side)))
+ pr_warn_once("bogus mpc option on established client sk");
subflow->fully_established = 1;
subflow->remote_key = mp_opt->sndr_key;
subflow->can_ack = 1;