patch 'net/vmxnet3: disable RSS for single queue for ESX8.0+' has been queued to stable release 22.11.11

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 22.11.11

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/14/25. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/23de7a32a3774a5e8e1e4fd314193d03377512f1

Thanks.

Luca Boccassi

---
>From 23de7a32a3774a5e8e1e4fd314193d03377512f1 Mon Sep 17 00:00:00 2001
From: Amiya Ranjan Mohakud <amiyaranjan.mohakud at gmail.com>
Date: Thu, 23 Oct 2025 14:00:19 +0530
Subject: [PATCH] net/vmxnet3: disable RSS for single queue for ESX8.0+

[ upstream commit 9a219380b148c1837e54eb15cff501cba1ba842a ]

This 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")

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 eadfd6f230..59763fdc31 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;
 
-- 
2.47.3

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2025-11-12 16:20:41.542609485 +0000
+++ 0015-net-vmxnet3-disable-RSS-for-single-queue-for-ESX8.0.patch	2025-11-12 16:20:40.895716156 +0000
@@ -1 +1 @@
-From 9a219380b148c1837e54eb15cff501cba1ba842a Mon Sep 17 00:00:00 2001
+From 23de7a32a3774a5e8e1e4fd314193d03377512f1 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 9a219380b148c1837e54eb15cff501cba1ba842a ]
+
@@ -14 +15,0 @@
-Cc: stable at dpdk.org
@@ -22 +23 @@
-index b0c19c5c7c..da9af08207 100644
+index eadfd6f230..59763fdc31 100644
@@ -25 +26 @@
-@@ -611,6 +611,13 @@ vmxnet3_dev_configure(struct rte_eth_dev *dev)
+@@ -534,6 +534,13 @@ vmxnet3_dev_configure(struct rte_eth_dev *dev)