From: David Howells <dhowe...@redhat.com> Date: Thu, 21 May 2020 00:21:42 +0100
> > Here are a couple of fixes and an extra tracepoint for AF_RXRPC: > > (1) Calculate the RTO pretty much as TCP does, rather than making > something up, including an initial 4s timeout (which causes return > probes from the fileserver to fail if a packet goes missing), and add > backoff. > > (2) Fix the discarding of out-of-order received ACKs. We mustn't let the > hard-ACK point regress, nor do we want to do unnecessary > retransmission because the soft-ACK list regresses. This is not > trivial, however, due to some loose wording in various old protocol > specs, the ACK field that should be used for this sometimes has the > wrong information in it. > > (3) Add a tracepoint to log a discarded ACK. > > The patches are tagged here: > > git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git > rxrpc-fixes-20200520 Pulled, thanks David.
