Hi Florin,
Due to some reasons we need to stay on vpp20.09 for some time,
that’s why I hope I can fix the issue on this version. Actually, I did some
code changes in TLS layer to let session node force reschedule the TLS session
when tx svm fifo is full or at least not empty, after the changes, the tx svm
fifo can be recovered after stopping the traffic, but I think this is not the
correct way to solve the issue😊.
Anyway let me see if I can test the same case with latest vpp
codes
BRs,
Kevin
From: [email protected] <[email protected]> On Behalf Of Florin Coras
Sent: Tuesday, March 7, 2023 2:49 PM
To: vpp-dev <[email protected]>
Cc: Olivia Dunham <[email protected]>
Subject: COMMERCIAL BULK: Re: [E] COMMERCIAL BULK: [vpp-dev] TLS app stuck
after burst of traffic #vpp-hoststack
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Hi Kevin,
That’s a really old version of vpp. TLS has seen several improvements since
then in areas including scheduling after incomplete writes. If you get a chance
to test vpp latest or a more recent release, do let us know if the issue still
persists.
Regards,
Florin
On Mar 6, 2023, at 5:42 PM, Kevin Yan via lists.fd.io
<[email protected]<mailto:[email protected]>>
wrote:
Hi @Olivia Dunham<mailto:[email protected]>,
Recently I met the exact same issue, TLS TX svm fifo gets full
after burst of traffic and it will never resume, meanwhile, TCP TX svm fifo is
empty at that time I’m using VPP20.09, I believe there is some issue in TLS
layer,
so did you fix the issue later? If yes, can you share the solution.
BRs,
Kevin
From: [email protected]<mailto:[email protected]>
<[email protected]<mailto:[email protected]>> On Behalf Of Olivia Dunham
Sent: Tuesday, September 14, 2021 8:58 PM
To: [email protected]<mailto:[email protected]>
Subject: [E] COMMERCIAL BULK: [vpp-dev] TLS app stuck after burst of traffic
#vpp-hoststack
Email is from a Free Mail Service (Gmail/Yahoo/Hotmail….) : Beware of Phishing
Scams, Report questionable emails [email protected]<mailto:[email protected]>
During sudden burst of traffic, the TCP fifo gets full. When this happens the
openssl TLS app de-schedules the transport. But once the TCP data is sent out,
the TLS is not resuming. VPP ends up in a state where TCP fifo is empty, but
the TLS fifo is full and no more Tx happens on TLS fifo.
VPP version: 21.01
We came across this commit - session tls: deq notifications for custom
tx<https://github.com/FDio/vpp/commit/1e6a0f64653c8142fa7032aba127ab4894bafc3c>
Not sure what is the issue fixed by this commit, but It doesn't seem to fix the
above mentioned issue.
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