From: Sindhu Devale <sindhu.devale@intel.com>
Date: Thu, 11 Jan 2018 18:10:52 -0600
Subject: i40iw: Remove limit on re-posting AEQ entries to HW
Patch-mainline: v4.16-rc1
Git-commit: 72b30e986d2527c023de455d55570e2d32494839
References: bsc#1058659 FATE#322535
Currently, if the number of processed Asynchronous Event Queue (AEQ)
entries exceeds 255, they are not returned to HW for re-use. During
scale-up, the unreturned AEQ entries can grow to the max AEQ size and
cause the HW to report an AEQ overflow.
Remove the check which limits the number of processed AEQ entries returned
to HW.
Fixes: 86dbcd0f12e9 ("RDMA/i40iw: add file to handle cqp calls")
Signed-off-by: Sindhu Devale <sindhu.devale@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/i40iw/i40iw_ctrl.c | 2 --
drivers/infiniband/hw/i40iw/i40iw_user.h | 1 -
2 files changed, 3 deletions(-)
--- a/drivers/infiniband/hw/i40iw/i40iw_ctrl.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_ctrl.c
@@ -1890,8 +1890,6 @@ static enum i40iw_status_code i40iw_sc_g
static enum i40iw_status_code i40iw_sc_repost_aeq_entries(struct i40iw_sc_dev *dev,
u32 count)
{
- if (count > I40IW_MAX_AEQ_ALLOCATE_COUNT)
- return I40IW_ERR_INVALID_SIZE;
if (dev->is_pf)
i40iw_wr32(dev->hw, I40E_PFPE_AEQALLOC, count);
--- a/drivers/infiniband/hw/i40iw/i40iw_user.h
+++ b/drivers/infiniband/hw/i40iw/i40iw_user.h
@@ -59,7 +59,6 @@ enum i40iw_device_capabilities_const {
I40IW_MAX_CEQ_ENTRIES = 131071,
I40IW_MIN_CQ_SIZE = 1,
I40IW_MAX_CQ_SIZE = 1048575,
- I40IW_MAX_AEQ_ALLOCATE_COUNT = 255,
I40IW_DB_ID_ZERO = 0,
I40IW_MAX_WQ_FRAGMENT_COUNT = 3,
I40IW_MAX_SGE_RD = 1,