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authorPaolo Abeni <pabeni@redhat.com>2020-04-30 15:01:55 +0200
committerDavid S. Miller <davem@davemloft.net>2020-04-30 12:23:23 -0700
commita77895dbc0ad0400e377e8f26567820b3658e30e (patch)
treed93b92a9e92fe3385663323b55747ad5104307aa
parentmptcp: fix 'use_ack' option access. (diff)
downloadwireguard-linux-a77895dbc0ad0400e377e8f26567820b3658e30e.tar.xz
wireguard-linux-a77895dbc0ad0400e377e8f26567820b3658e30e.zip
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: 9a19371bf029 ("mptcp: fix data_fin handing in RX path") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/mptcp/options.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index 9486720c3256..45497af23906 100644
--- 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;