On Tue, Dec 04, 2012 at 09:58:35AM -0500, Neil Horman wrote:
> On Tue, Dec 04, 2012 at 01:34:54PM +0000, Jamie Parsons wrote:
> > Hi Neil and Vlad,
> >
> > I've spoken to IT services and they can install the Fedora 17 OS on a box for me. Is that recent enough a kernel to repro the issue on?
> >
> > Thanks,
> >
> > Jamie
> >
> Yes, it is I think. Vlad and I have also discussed this and we think a
> systemtap script might be in order here so we can better track what the rwnd
> value is doing as your test case progresses. I'm sorry I've not gotten that to
> you yet, but I'm working on it.
> Neil
>
So, I have to apologize, but systemtap kinda sucks to work with. Its not
working yet, but I wanted to post this too you in case you have better systemtap
skills than I do. Regardless this stap script is generall the thing we want to
run and should give us a fairly good view (when it works) of whats happening
with an associations peer rwnd value in the stack.
Best
Neil
probe module("sctp").function("sctp_assoc_update").return {
printf("sctp_assoc_update updates asoc %p peer rwnd to %d\n", $asoc, $asoc->peer->rwnd);
}
probe module("sctp").function("sctp_retransmit_mark") {
printf("sctp_retransmit_mark increases asoc %p peer rwnd to %d\n", $asoc, $q->asoc->peer->rwnd);
}
probe module("sctp").function("sctp_outq_sack") {
printf("sctp_outq_sack updates asoc %p peer rwnd to %d\n", $q->asoc, $q->asoc->peer->rwnd);
}
probe module("sctp").function("sctp_packet_append_data").return {
printf("sctp_packet_append_data reduces asoc %p peer rwnd to %d\n", $asoc, $asoc->peer->rwnd);
}
probe module("sctp").function("sctp_process_init").return {
printf("sctp_process_init updates assoc %p peer rwnd to %d\n", $asoc, $asoc->peer->rwnd);
}
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