[dpdk-stable] patch 'net/netvsc: disable multi-queue on older servers' has been queued to LTS release 18.11.1

[Kevin Traynor]

Hi,

FYI, your patch has been queued to LTS release 18.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 01/11/19. 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.

Thanks.

Kevin Traynor

---
>From 458c7a12a9483550fe161e44186ce3ede613a53d Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <sthemmin at microsoft.com>
Date: Wed, 5 Dec 2018 14:11:58 -0800
Subject: [PATCH] net/netvsc: disable multi-queue on older servers

[ upstream commit afbc22bf51ab98b9b61b11eb6d38278a9d577111 ]

NDIS multi-queue support is only in WS2012 or later. Check the NDIS
version to limit to single queue on older versions. Similar code
exists in Linux driver.

Fixes: 4e9c73e96e83 ("net/netvsc: add Hyper-V network device")

Signed-off-by: Stephen Hemminger <sthemmin at microsoft.com>
---
 drivers/net/netvsc/hn_ethdev.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/netvsc/hn_ethdev.c b/drivers/net/netvsc/hn_ethdev.c
index b330bf3d7..1256fa399 100644
--- a/drivers/net/netvsc/hn_ethdev.c
+++ b/drivers/net/netvsc/hn_ethdev.c
@@ -733,4 +733,5 @@ eth_hn_dev_init(struct rte_eth_dev *eth_dev)
 	hv->port_id = eth_dev->data->port_id;
 	hv->latency = HN_CHAN_LATENCY_NS;
+	hv->max_queues = 1;
 
 	err = hn_parse_args(eth_dev);
@@ -771,4 +772,8 @@ eth_hn_dev_init(struct rte_eth_dev *eth_dev)
 		goto failed;
 
+	/* Multi queue requires later versions of windows server */
+	if (hv->nvs_ver < NVS_VERSION_5)
+		return 0;
+
 	max_chan = rte_vmbus_max_channels(vmbus);
 	PMD_INIT_LOG(DEBUG, "VMBus max channels %d", max_chan);
-- 
2.19.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2019-01-04 13:23:07.602723781 +0000
+++ 0006-net-netvsc-disable-multi-queue-on-older-servers.patch	2019-01-04 13:23:07.000000000 +0000
@@ -1,14 +1,15 @@
-From afbc22bf51ab98b9b61b11eb6d38278a9d577111 Mon Sep 17 00:00:00 2001
+From 458c7a12a9483550fe161e44186ce3ede613a53d Mon Sep 17 00:00:00 2001
 From: Stephen Hemminger <sthemmin at microsoft.com>
 Date: Wed, 5 Dec 2018 14:11:58 -0800
 Subject: [PATCH] net/netvsc: disable multi-queue on older servers
 
+[ upstream commit afbc22bf51ab98b9b61b11eb6d38278a9d577111 ]
+
 NDIS multi-queue support is only in WS2012 or later. Check the NDIS
 version to limit to single queue on older versions. Similar code
 exists in Linux driver.
 
 Fixes: 4e9c73e96e83 ("net/netvsc: add Hyper-V network device")
-Cc: stable at dpdk.org
 
 Signed-off-by: Stephen Hemminger <sthemmin at microsoft.com>
 ---