Commit fc994094 authored by Daisy Chang's avatar Daisy Chang Committed by Jon Grimm

sctp: Fix bug 611919 - should ignore the cwnd value for fast retransmit.

parent b06ce00b
......@@ -530,10 +530,18 @@ static sctp_xmit_t sctp_packet_append_data(sctp_packet_t *packet,
* to a given transport address if it has cwnd or more bytes
* of data outstanding to that transport address.
*/
/* RFC 7.2.4 & the Implementers Guide 2.8.
*
* 3) ...
* When a Fast Retransmit is being performed the sender SHOULD
* ignore the value of cwnd and SHOULD NOT delay retransmission.
*/
if (!chunk->fast_retransmit) {
if (transport->flight_size >= transport->cwnd) {
retval = SCTP_XMIT_RWND_FULL;
goto finish;
}
}
/* Keep track of how many bytes are in flight over this transport. */
transport->flight_size += datasize;
......
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