[dpdk-stable] patch 'net/ixgbe: fix VF Rx interrupt enabling' 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 02/09/18. So please
shout if anyone has objections.

Thanks.

Luca Boccassi

---
>From da4642007ccda1180b26b99f284cf5d11e199d86 Mon Sep 17 00:00:00 2001
From: Wenzhuo Lu <wenzhuo.lu at intel.com>
Date: Wed, 24 Jan 2018 16:16:51 +0800
Subject: [PATCH] net/ixgbe: fix VF Rx interrupt enabling

[ upstream commit 8d1f13f96ce3cb4167244f928f6cb9574f561560 ]

When using UIO, after enabling the interrupt to get the PF
message, VF RX queue interrupt is not working.
It's expected, as UIO doesn't support multiple interrupt.
So, PMD should not try to enable RX queue interrupt. Then
APP can know the RX queue interrupt is not enabled and only
choose the polling mode.

Fixes: 77234603fba0 ("net/ixgbe: support VF mailbox interrupt for link up/down")

Signed-off-by: Wenzhuo Lu <wenzhuo.lu at intel.com>
Acked-by: Helin Zhang <helin.zhang at intel.com>
Acked-by: Beilei Xing <beilei.xing at intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index f870069a7..941195b8e 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -4235,7 +4235,8 @@ ixgbevf_dev_start(struct rte_eth_dev *dev)
 	ixgbevf_dev_rxtx_start(dev);
 
 	/* check and configure queue intr-vector mapping */
-	if (dev->data->dev_conf.intr_conf.rxq != 0) {
+	if (rte_intr_cap_multiple(intr_handle) &&
+	    dev->data->dev_conf.intr_conf.rxq != 0) {
 		intr_vector = dev->data->nb_rx_queues;
 		if (rte_intr_efd_enable(intr_handle, intr_vector))
 			return -1;
-- 
2.14.2