mptcp: initialize the data_fin field for mpc packets

When parsing MPC+data packets we set the dss field, so we must also initialize the data_fin, or we can find stray value there. Fixes: 9a19371 ("mptcp: fix data_fin handing in RX path") Signed-off-by: Paolo Abeni <[email protected]> Signed-off-by: David S. Miller <[email protected]>
josf · Apr 30, 2020 · a77895d · a77895d
1 parent 5a91e32
commit a77895d
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/net/mptcp/options.c b/net/mptcp/options.c
@@ -858,6 +858,7 @@ void mptcp_incoming_options(struct sock *sk, struct sk_buff *skb,
 			mpext->subflow_seq = 1;
 			mpext->dsn64 = 1;
 			mpext->mpc_map = 1;
+			mpext->data_fin = 0;
 		} else {
 			mpext->data_seq = mp_opt.data_seq;
 			mpext->subflow_seq = mp_opt.subflow_seq;