mptcp: remove unneeded check on first subflow

Currently we explicitly check for the first subflow being NULL in a couple of places, even if we don't need any special actions in such scenario. Just drop the unneeded checks, to avoid confusion. Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: Paolo Abeni <[email protected]>
multipath-tcp · Mar 26, 2021 · a88e64e · a88e64e
1 parent c159ac9
commit a88e64e
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diff --git a/net/mptcp/options.c b/net/mptcp/options.c
@@ -952,7 +952,7 @@ bool mptcp_update_rcv_data_fin(struct mptcp_sock *msk, u64 data_fin_seq, bool us
 	 * should match. If they mismatch, the peer is misbehaving and
 	 * we will prefer the most recent information.
 	 */
-	if (READ_ONCE(msk->rcv_data_fin) || !READ_ONCE(msk->first))
+	if (READ_ONCE(msk->rcv_data_fin))
 		return false;
 
 	WRITE_ONCE(msk->rcv_data_fin_seq,

diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
@@ -481,7 +481,7 @@ static bool mptcp_check_data_fin(struct sock *sk)
 	u64 rcv_data_fin_seq;
 	bool ret = false;
 
-	if (__mptcp_check_fallback(msk) || !msk->first)
+	if (__mptcp_check_fallback(msk))
 		return ret;
 
 	/* Need to ack a DATA_FIN received from a peer while this side