From: Somnath Kotur <somnath.kotur@broadcom.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>
Cc: dev <dev@dpdk.org>, dpdk stable <stable@dpdk.org>,
Kalesh AP <kalesh-anakkur.purayil@broadcom.com>,
Ajit Khaparde <ajit.khaparde@broadcom.com>
Subject: Re: [dpdk-stable] [PATCH] net/bnxt: fix to reset Rx next consumer index
Date: Mon, 23 Aug 2021 12:08:44 +0530 [thread overview]
Message-ID: <CAOBf=msnqRvL2otPhpjx0ExNnHhpefJmMWnXWzkW1x+KW6b+Mw@mail.gmail.com> (raw)
In-Reply-To: <64bb2ddc-f160-ee25-51c4-917141898b0c@intel.com>
[-- Attachment #1: Type: text/plain, Size: 1828 bytes --]
Thank you Ferruh, have sent V2 with updated commit log, please see if it
sounds good now?
-Som
On Fri, Aug 20, 2021 at 6:17 PM Ferruh Yigit <ferruh.yigit@intel.com> wrote:
> On 8/10/2021 7:07 AM, Somnath Kotur wrote:
> > In bnxt_init_one_rx_ring(), reset this variable internal to the driver
> > ring to 0, so that there is no mismatch with actual value in HW on
> > traffic resumption.
> >
>
> Hi Somnath,
>
> What is the impact of the patch, what are you fixing?
>
> If the 'rx_next_cons' (next consumer index) is not matching with HW value,
> what
> happens, does the Rx fails completely and unrecoverable? Or does miss one
> or
> more packet?
>
> And when/how this happens, since driver is not new I assume this doesn't
> happen
> in first ring init. Does this happen after uninit and init again?
> Providing this
> information helps clarifying scope of the fix.
>
> Can you please send a new version with updated commit log?
>
> Thanks,
> ferruh
>
> > Fixes: 03c8f2fe111c ("net/bnxt: detect bad opaque in Rx completion")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
> > Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
> > Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
> > ---
> > drivers/net/bnxt/bnxt_rxr.c | 3 +++
> > 1 file changed, 3 insertions(+)
> >
> > diff --git a/drivers/net/bnxt/bnxt_rxr.c b/drivers/net/bnxt/bnxt_rxr.c
> > index aea71703d1..73fbdd17d1 100644
> > --- a/drivers/net/bnxt/bnxt_rxr.c
> > +++ b/drivers/net/bnxt/bnxt_rxr.c
> > @@ -1379,6 +1379,9 @@ int bnxt_init_one_rx_ring(struct bnxt_rx_queue
> *rxq)
> > }
> > PMD_DRV_LOG(DEBUG, "TPA alloc Done!\n");
> >
> > + /* Explicitly reset this driver internal tracker on a ring init */
> > + rxr->rx_next_cons = 0;
> > +
> > return 0;
> > }
> >
> >
>
>
next prev parent reply other threads:[~2021-08-23 6:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-10 6:07 Somnath Kotur
2021-08-19 4:48 ` Ajit Khaparde
2021-08-20 12:46 ` Ferruh Yigit
2021-08-23 6:38 ` Somnath Kotur [this message]
2021-08-23 6:33 ` [dpdk-stable] [PATCH v2] " Somnath Kotur
2021-08-23 14:43 ` [dpdk-stable] [PATCH v3] net/bnxt: fix crash after port stop/start Somnath Kotur
2021-08-23 15:43 ` [dpdk-stable] [PATCH v4] " Somnath Kotur
2021-08-23 15:44 ` Somnath Kotur
2021-08-24 1:51 ` Ajit Khaparde
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAOBf=msnqRvL2otPhpjx0ExNnHhpefJmMWnXWzkW1x+KW6b+Mw@mail.gmail.com' \
--to=somnath.kotur@broadcom.com \
--cc=ajit.khaparde@broadcom.com \
--cc=dev@dpdk.org \
--cc=ferruh.yigit@intel.com \
--cc=kalesh-anakkur.purayil@broadcom.com \
--cc=stable@dpdk.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).