From: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>
To: Akhil Goyal <akhil.goyal@nxp.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH v5 03/10] examples/ipsec-secgw: fix crypto-op might never get dequeued
Date: Wed, 2 Jan 2019 13:43:43 +0000 [thread overview]
Message-ID: <2601191342CEEE43887BDE71AB977258010D8C046D@IRSMSX106.ger.corp.intel.com> (raw)
In-Reply-To: <eafd3929-c419-cc88-4b80-54edfbb4f12f@nxp.com>
>
> On 12/28/2018 9:03 PM, Konstantin Ananyev wrote:
> > In some cases crypto-ops could never be dequeued from the crypto-device.
> > The easiest way to reproduce:
> > start ipsec-secgw with crypto-dev and send to it less then 32 packets.
> > none packets will be forwarded.
> > Reason for that is that the application does dequeue() from crypto-queues
> > only when new packets arrive.
> > This patch makes sure it calls dequeue() on a regular basis.
> >
> > Fixes: c64278c0c18b ("examples/ipsec-secgw: rework processing loop")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
> > Acked-by: Radu Nicolau <radu.nicolau@intel.com>
> > ---
> > examples/ipsec-secgw/ipsec-secgw.c | 136 ++++++++++++++++++++++++-----
> > examples/ipsec-secgw/ipsec.c | 60 ++++++++-----
> > examples/ipsec-secgw/ipsec.h | 11 +++
> > 3 files changed, 165 insertions(+), 42 deletions(-)
> [snip]
> > +
> > /* main processing loop */
> > static int32_t
> > main_loop(__attribute__((unused)) void *dummy)
> > @@ -866,7 +958,8 @@ main_loop(__attribute__((unused)) void *dummy)
> > diff_tsc = cur_tsc - prev_tsc;
> >
> > if (unlikely(diff_tsc > drain_tsc)) {
> > - drain_buffers(qconf);
> > + drain_tx_buffers(qconf);
> > + drain_crypto_buffers(qconf);
> > prev_tsc = cur_tsc;
> > }
> >
> > @@ -880,6 +973,9 @@ main_loop(__attribute__((unused)) void *dummy)
> > if (nb_rx > 0)
> > process_pkts(qconf, pkts, nb_rx, portid);
> > }
> > +
> > + drain_inbound_crypto_queues(qconf, &qconf->inbound);
> > + drain_outbound_crypto_queues(qconf, &qconf->outbound);
>
> drain_inbound_crypto_queues and drain_outbound_crypto_queues should be called based on diff_tsc.
> moving these two lines above after drain_crypto_buffers will improve the performance drop caused due to this patch.
Thanks, good to know.
To make what you suggest above to work properly with non-legacy mode ('-l') extra changes
would be needed...
Do you have an idea - what exactly causing a slowdown?
Just an extra function calls (drain_inbound_crypto_queues/ drain_outbound_crypto_queues)?
Or is that because we do dequeue() from crypto PMD more often then before?
Konstantin
next prev parent reply other threads:[~2019-01-02 13:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1544805623-18150-2-git-send-email-konstantin.ananyev@intel.com>
2018-12-28 15:33 ` [dpdk-stable] " Konstantin Ananyev
2019-01-02 11:44 ` [dpdk-stable] [dpdk-dev] " Akhil Goyal
2019-01-02 13:43 ` Ananyev, Konstantin [this message]
2019-01-02 13:50 ` Akhil Goyal
2019-01-02 15:06 ` Ananyev, Konstantin
2018-12-28 15:33 ` [dpdk-stable] [PATCH v5 04/10] examples/ipsec-secgw: fix outbound codepath for single SA Konstantin Ananyev
2018-12-28 15:33 ` [dpdk-stable] [PATCH v5 05/10] examples/ipsec-secgw: make local variables static Konstantin Ananyev
2018-12-28 15:33 ` [dpdk-stable] [PATCH v5 06/10] examples/ipsec-secgw: fix inbound SA checking Konstantin Ananyev
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