[dpdk-stable] patch 'net/ixgbe: fix max queue number for VF' has been queued to LTS release 16.11.5

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to LTS release 16.11.5

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 01/28/18. So please
shout if anyone has objections.

Thanks.

Luca Boccassi

---
>From 37d41347868bf1d2f8aae89ed12661b8d5974660 Mon Sep 17 00:00:00 2001
From: Yanglong Wu <yanglong.wu at intel.com>
Date: Tue, 9 Jan 2018 14:32:05 +0800
Subject: [PATCH] net/ixgbe: fix max queue number for VF

[ upstream commit 03231aec448e0596da1cac6ad8543ff937c24eae ]

VF can't run in multiple queue mode, if nb_q_per_pool is set to 1.
Nb_q_per_pool is passed through to max_rx_q and max_tx_q in VF.
So if nb_q_per_pool is equal to 1, max_rx_q and max_tx_q shouldn't
be more than 1, otherwise VF multiple queue mode will fail.

RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool is the Max number of queue can be
used in VF, that would be assigned as IXGBE_MAX_RX_QUEUE_NUM /
RTE_ETH_DEV_SRIOV(dev).active, so that assigning nb_q_per_pool  as 1
when PF is in ETH_MQ_RX_NONE, which will make VF can just use only 1
queue, is not right.

Fixes: 27b609cbd1c6 ("ethdev: move the multi-queue mode check to specific drivers")

Signed-off-by: Yanglong Wu <yanglong.wu at intel.com>
Acked-by: Wei Dai <wei.dai at intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 9be3f3cd0..d9cc02f47 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -2005,8 +2005,6 @@ ixgbe_check_mq_mode(struct rte_eth_dev *dev)
 		case ETH_MQ_RX_NONE:
 			/* if nothing mq mode configure, use default scheme */
 			dev->data->dev_conf.rxmode.mq_mode = ETH_MQ_RX_VMDQ_ONLY;
-			if (RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool > 1)
-				RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool = 1;
 			break;
 		default: /* ETH_MQ_RX_DCB, ETH_MQ_RX_DCB_RSS or ETH_MQ_TX_DCB*/
 			/* SRIOV only works in VMDq enable mode */
-- 
2.14.2