Patch "qed: Correct MSI-x for storage" has been added to the 4.9-stable tree

Patch "qed: Correct MSI-x for storage" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    qed: Correct MSI-x for storage

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     qed-correct-msi-x-for-storage.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Sun Mar 18 16:55:33 CET 2018
From: "Mintz, Yuval" <Yuval.Mintz@cavium.com>
Date: Wed, 5 Apr 2017 21:20:11 +0300
Subject: qed: Correct MSI-x for storage

From: "Mintz, Yuval" <Yuval.Mintz@cavium.com>


[ Upstream commit 2f78227874754b1e10cd348fd6e7693b0dabb3f6 ]

When qedr is enabled, qed would try dividing the msi-x vectors between
L2 and RoCE, starting with L2 and providing it with sufficient vectors
for its queues.

Problem is qed would also do that for storage partitions, and as those
don't need queues it would lead qed to award those partitions with 0
msi-x vectors, causing them to believe theye're using INTa and
preventing them from operating.

Fixes: 51ff17251c9c ("qed: Add support for RoCE hw init")
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/qlogic/qed/qed_main.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/qlogic/qed/qed_main.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_main.c
@@ -711,7 +711,8 @@ static int qed_slowpath_setup_int(struct
 	cdev->int_params.fp_msix_cnt = cdev->int_params.out.num_vectors -
 				       cdev->num_hwfns;
 
-	if (!IS_ENABLED(CONFIG_QED_RDMA))
+	if (!IS_ENABLED(CONFIG_QED_RDMA) ||
+	    QED_LEADING_HWFN(cdev)->hw_info.personality != QED_PCI_ETH_ROCE)
 		return 0;
 
 	for_each_hwfn(cdev, i)


Patches currently in stable-queue which might be from Yuval.Mintz@cavium.com are

queue-4.9/qed-always-publish-vf-link-from-leading-hwfn.patch
queue-4.9/qed-fix-tm-block-ilt-allocation.patch
queue-4.9/qed-correct-msi-x-for-storage.patch