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 --- drivers/net/ethernet/intel/fm10k/fm10k_iov.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_iov.c b/drivers/net/ethernet/intel/fm10k/fm10k_iov.c index acfb8b1f88a7..a8f9d0012d82 100644 --- a/drivers/net/ethernet/intel/fm10k/fm10k_iov.c +++ b/drivers/net/ethernet/intel/fm10k/fm10k_iov.c @@ -126,6 +126,9 @@ s32 fm10k_iov_mbx(struct fm10k_intfc *interface) 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);