On Mon, 19 Jul 2021 12:53:23 -0400, Xin Long wrote: > This patch is to introduce last_rtx_chunks into sctp_transport to detect > if there's any packet retransmission/loss happened by checking against > asoc's rtx_data_chunks in sctp_transport_pl_send(). > > If there is, namely, transport->last_rtx_chunks != asoc->rtx_data_chunks, > the pmtu probe will be sent out. Otherwise, increment the pl.raise_count > and return when it's in Search Complete state. > > With this patch, if in Search Complete state, which is a long period, it > doesn't need to keep probing the current pmtu unless there's data packet > loss. This will save quite some traffic. > > Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx> Can we get a Fixes tag, please?
