[tcp] Fix ECN on finalizing sessions.
A subtle oversight would subtly change new data packets sent after a shutdown() or close() call, while the send buffer is still draining. MFC after: 3 days Reviewed By: #transport, tuexen Sponsored by: NetApp, Inc. Differential Revision: https://reviews.freebsd.org/D29616
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@ -1181,7 +1181,7 @@ tcp_output(struct tcpcb *tp)
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tp->t_flags2 &= ~TF2_ECN_SND_ECE;
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}
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if (tp->t_state == TCPS_ESTABLISHED &&
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if (TCPS_HAVEESTABLISHED(tp->t_state) &&
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(tp->t_flags2 & TF2_ECN_PERMIT)) {
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/*
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* If the peer has ECN, mark data packets with
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