[PATCH v3] net/vmxnet3: disable RSS for single queue configuration for ESX8.0+ versions

[Amiya Ranjan Mohakud]

Thanks Jochen.
I see that the state is "Awaiting Upstream".  Will it be changed to
"Accepted" post upstream or Is it already accepted ?

Thanks
Amiya


On Fri, 24 Oct 2025 at 06:06, Jochen Behrens <jochen.behrens at broadcom.com>
wrote:

> Acked-by: Jochen Behrens <jochen.behrens at broadcom.com>
>
> On 10/23/25 01:30, Amiya Ranjan Mohakud wrote:
> > It fixes the issue of v4 RSS configuration failure in
> > vmxnet3_v4_rss_configure() while writing to BAR register. It's very
> > specific to single queue configuration.
> >
> > https://mails.dpdk.org/archives/users/2025-April/008236.html
> >
> > Bugzilla ID:1789
> > Fixes: 52ec00fd1474e8 ("net/vmxnet3: fix RSS setting on v4")
> > Cc: stable at dpdk.org
> >
> > v2:
> >   - Fixed typo in commit message
> > v3:
> >   - Checking if RSS is already enabled
> >
> > Signed-off-by: Amiya Ranjan Mohakud <amiyaranjan.mohakud at gmail.com>
> > ---
> >   drivers/net/vmxnet3/vmxnet3_ethdev.c | 7 +++++++
> >   1 file changed, 7 insertions(+)
> >
> > diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.c
> b/drivers/net/vmxnet3/vmxnet3_ethdev.c
> > index f4cdb1bb31..a0306af86c 100644
> > --- a/drivers/net/vmxnet3/vmxnet3_ethdev.c
> > +++ b/drivers/net/vmxnet3/vmxnet3_ethdev.c
> > @@ -534,6 +534,13 @@ vmxnet3_dev_configure(struct rte_eth_dev *dev)
> >
> >       PMD_INIT_FUNC_TRACE();
> >
> > +     /* Disabling RSS for single queue pair */
> > +     if (dev->data->nb_rx_queues == 1 &&
> > +         dev->data->dev_conf.rxmode.mq_mode == RTE_ETH_MQ_RX_RSS) {
> > +             dev->data->dev_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
> > +             PMD_INIT_LOG(ERR, "WARN: Disabling RSS for single Rx
> queue");
> > +     }
> > +
> >       if (dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG)
> >               dev->data->dev_conf.rxmode.offloads |=
> RTE_ETH_RX_OFFLOAD_RSS_HASH;
> >
>
>
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