From: Lang Cheng <chenglang@huawei.com>
Date: Thu, 26 Mar 2020 11:40:17 +0800
Subject: RDMA/hns: Reduce the maximum number of extend SGE per WQE
Patch-mainline: v5.7-rc1
Git-commit: 019cd05ce59d1f7c9cde4b77237d2c5fd114ce83
References: jsc#SLE-14777
Just reduce the default number to 64 for backward compatibility, the
driver can still get this configuration from the firmware.
Link: https://lore.kernel.org/r/1585194018-4381-3-git-send-email-liweihang@huawei.com
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
@@ -50,15 +50,14 @@
#define HNS_ROCE_V2_MAX_WQE_NUM 0x8000
#define HNS_ROCE_V2_MAX_SRQ 0x100000
#define HNS_ROCE_V2_MAX_SRQ_WR 0x8000
-#define HNS_ROCE_V2_MAX_SRQ_SGE 0x100
+#define HNS_ROCE_V2_MAX_SRQ_SGE 64
#define HNS_ROCE_V2_MAX_CQ_NUM 0x100000
#define HNS_ROCE_V2_MAX_CQC_TIMER_NUM 0x100
#define HNS_ROCE_V2_MAX_SRQ_NUM 0x100000
#define HNS_ROCE_V2_MAX_CQE_NUM 0x400000
#define HNS_ROCE_V2_MAX_SRQWQE_NUM 0x8000
-#define HNS_ROCE_V2_MAX_RQ_SGE_NUM 0x100
-#define HNS_ROCE_V2_MAX_SQ_SGE_NUM 0xff
-#define HNS_ROCE_V2_MAX_SRQ_SGE_NUM 0x100
+#define HNS_ROCE_V2_MAX_RQ_SGE_NUM 64
+#define HNS_ROCE_V2_MAX_SQ_SGE_NUM 64
#define HNS_ROCE_V2_MAX_EXTEND_SGE_NUM 0x200000
#define HNS_ROCE_V2_MAX_SQ_INLINE 0x20
#define HNS_ROCE_V2_UAR_NUM 256