patch 'net/mlx5: fix hypervisor detection in VLAN workaround' has been queued to stable release 23.11.5

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 23.11.5

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 06/28/25. 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://git.dpdk.org/dpdk-stable/log/?h=23.11-staging

This queued commit can be viewed at:
https://git.dpdk.org/dpdk-stable/commit/?h=23.11-staging&id=bd6d0822b1057ce25dd0e9f9cf9dfc90b4624fd7

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From bd6d0822b1057ce25dd0e9f9cf9dfc90b4624fd7 Mon Sep 17 00:00:00 2001
From: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
Date: Fri, 6 Dec 2024 16:26:05 +0200
Subject: [PATCH] net/mlx5: fix hypervisor detection in VLAN workaround
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit 8518a4e55980b23dfc7d855aefbef0df02e450e0 ]

The mlx5 PMD provides a specific workaround for the VMware ESXi
hypervisor, enabling on-demand routing configuration to virtual
machines. This workaround activates when the device type is
a Virtual Function and either an ESXi hypervisor is detected
or the hypervisor type is unknown.

For non-x86 architectures the function rte_hypervisor_get()
consistently returns an unknown type, which triggers the workaround
automatically without any actual needs. If there are VLAN support
requirements, this can lead to failures in inserting default control
flows.

Do not trigger the workaround for unknown hypervisor type
in non-x86 environments.

Fixes: dfedf3e3f9d2 ("net/mlx5: add workaround for VLAN in virtual machine")

Signed-off-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
Acked-by: Bing Zhao <bingz at nvidia.com>
---
 drivers/net/mlx5/linux/mlx5_vlan_os.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/mlx5/linux/mlx5_vlan_os.c b/drivers/net/mlx5/linux/mlx5_vlan_os.c
index 81611a8d3f..353484de3f 100644
--- a/drivers/net/mlx5/linux/mlx5_vlan_os.c
+++ b/drivers/net/mlx5/linux/mlx5_vlan_os.c
@@ -112,16 +112,16 @@ mlx5_vlan_vmwa_init(struct rte_eth_dev *dev, uint32_t ifindex)
 	/* Check whether there is desired virtual environment */
 	hv_type = rte_hypervisor_get();
 	switch (hv_type) {
+#if defined(RTE_ARCH_X86) || defined(RTE_ARCH_X86_64)
+	/* Always misdetected on ARM archs, let's ignore this */
 	case RTE_HYPERVISOR_UNKNOWN:
+#endif
 	case RTE_HYPERVISOR_VMWARE:
-		/*
-		 * The "white list" of configurations
-		 * to engage the workaround.
-		 */
+		/* The list of configurations to engage the workaround. */
 		break;
 	default:
 		/*
-		 * The configuration is not found in the "white list".
+		 * The configuration is not found in the list.
 		 * We should not engage the VLAN workaround.
 		 */
 		return NULL;
-- 
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2025-06-26 19:59:20.782646602 +0800
+++ 0082-net-mlx5-fix-hypervisor-detection-in-VLAN-workaround.patch	2025-06-26 19:59:17.522418038 +0800
@@ -1 +1 @@
-From 8518a4e55980b23dfc7d855aefbef0df02e450e0 Mon Sep 17 00:00:00 2001
+From bd6d0822b1057ce25dd0e9f9cf9dfc90b4624fd7 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit 8518a4e55980b23dfc7d855aefbef0df02e450e0 ]
@@ -22 +24,0 @@
-Cc: stable at dpdk.org