This is a note to let you know that I've just added the patch titled
fm10k: ensure we process SM mbx when processing VF mbx
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: fm10k-ensure-we-process-sm-mbx-when-processing-vf-mbx.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 Thu Dec 21 09:02:40 CET 2017
From: Jacob Keller jacob.e.keller@intel.com Date: Mon, 2 Oct 2017 07:17:50 -0700 Subject: fm10k: ensure we process SM mbx when processing VF mbx
From: Jacob Keller jacob.e.keller@intel.com
[ Upstream commit 17a91809942ca32c70026d2d5ba3348a2c4fdf8f ]
When we process VF mailboxes, the driver is likely going to also queue up messages to the switch manager. This process merely queues up the FIFO, but doesn't actually begin the transmission process. Because we hold the mailbox lock during this VF processing, the PF<->SM mailbox is not getting processed at this time. Ensure that we actually process the PF<->SM mailbox in between each PF<->VF mailbox.
This should ensure prompt transmission of the messages queued up after each VF message is received and handled.
Signed-off-by: Jacob Keller jacob.e.keller@intel.com Tested-by: Krishneil Singh krishneil.k.singh@intel.com Signed-off-by: Jeff Kirsher jeffrey.t.kirsher@intel.com Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/intel/fm10k/fm10k_iov.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/net/ethernet/intel/fm10k/fm10k_iov.c +++ b/drivers/net/ethernet/intel/fm10k/fm10k_iov.c @@ -126,6 +126,9 @@ process_mbx: struct fm10k_mbx_info *mbx = &vf_info->mbx; u16 glort = vf_info->glort;
+ /* process the SM mailbox first to drain outgoing messages */ + hw->mbx.ops.process(hw, &hw->mbx); + /* verify port mapping is valid, if not reset port */ if (vf_info->vf_flags && !fm10k_glort_valid_pf(hw, glort)) hw->iov.ops.reset_lport(hw, vf_info);
Patches currently in stable-queue which might be from jacob.e.keller@intel.com are
queue-4.9/fm10k-fix-mis-ordered-parameters-in-declaration-for-.ndo_set_vf_bw.patch queue-4.9/fm10k-ensure-we-process-sm-mbx-when-processing-vf-mbx.patch