Patch "net/mlx4_core: Fix VF overwrite of module param which disables DMFS on new probed PFs" has been added to the 3.18-stable tree

Patch "net/mlx4_core: Fix VF overwrite of module param which disables DMFS on new probed PFs" has been added to the 3.18-stable tree

[gregkh]

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

    net/mlx4_core: Fix VF overwrite of module param which disables DMFS on new probed PFs

to the 3.18-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:
     net-mlx4_core-fix-vf-overwrite-of-module-param-which-disables-dmfs-on-new-probed-pfs.patch
and it can be found in the queue-3.18 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 Thu Oct 19 15:22:10 CEST 2017
From: Majd Dibbiny <majd@mellanox.com>
Date: Thu, 23 Feb 2017 12:02:43 +0200
Subject: net/mlx4_core: Fix VF overwrite of module param which disables DMFS on new probed PFs

From: Majd Dibbiny <majd@mellanox.com>


[ Upstream commit 95f1ba9a24af9769f6e20dfe9a77c863f253f311 ]

In the VF driver, module parameter mlx4_log_num_mgm_entry_size was
mistakenly overwritten -- and in a manner which overrode the
device-managed flow steering option encoded in the parameter.

log_num_mgm_entry_size is a global module parameter which
affects all ConnectX-3 PFs installed on that host.
If a VF changes log_num_mgm_entry_size, this will affect all PFs
which are probed subsequent to the change (by disabling DMFS for
those PFs).

Fixes: 3c439b5586e9 ("mlx4_core: Allow choosing flow steering mode")
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Reviewed-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/mellanox/mlx4/main.c |    2 --
 1 file changed, 2 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -648,8 +648,6 @@ static int mlx4_slave_cap(struct mlx4_de
 		return -ENOSYS;
 	}
 
-	mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
-
 	dev->caps.hca_core_clock = hca_param.hca_core_clock;
 
 	memset(&dev_cap, 0, sizeof(dev_cap));


Patches currently in stable-queue which might be from majd@mellanox.com are

queue-3.18/net-mlx4_core-fix-vf-overwrite-of-module-param-which-disables-dmfs-on-new-probed-pfs.patch