From: Weihang Li <liweihang@huawei.com>
To: <dledford@redhat.com>, <jgg@ziepe.ca>
Cc: <leon@kernel.org>, <linux-rdma@vger.kernel.org>, <linuxarm@huawei.com>
Subject: [PATCH for-next 1/3] RDMA/hns: Reduce PFC frames in congestion scenarios
Date: Thu, 26 Mar 2020 11:40:16 +0800 [thread overview]
Message-ID: <1585194018-4381-2-git-send-email-liweihang@huawei.com> (raw)
In-Reply-To: <1585194018-4381-1-git-send-email-liweihang@huawei.com>
From: Jihua Tao <taojihua4@huawei.com>
The original value means sending 16 packets at a time, and it should be
configured to 0 which means sending 1 packet instead. It is modified to
reduce the number of PFC frames to make sure the performance meets
expectations when flow control is enabled on hip08.
Signed-off-by: Jihua Tao <taojihua4@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 9bd8fbf..943f88c 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -4188,7 +4188,7 @@ static int modify_qp_init_to_rtr(struct ib_qp *ibqp,
/* mtu*(2^LP_PKTN_INI) should not bigger than 1 message length 64kb */
roce_set_field(context->byte_56_dqpn_err, V2_QPC_BYTE_56_LP_PKTN_INI_M,
- V2_QPC_BYTE_56_LP_PKTN_INI_S, 4);
+ V2_QPC_BYTE_56_LP_PKTN_INI_S, 0);
roce_set_field(qpc_mask->byte_56_dqpn_err, V2_QPC_BYTE_56_LP_PKTN_INI_M,
V2_QPC_BYTE_56_LP_PKTN_INI_S, 0);
--
2.8.1
next prev parent reply other threads:[~2020-03-26 3:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-26 3:40 [PATCH for-next 0/3] RDMA/hns: Update some configurations related to hardware Weihang Li
2020-03-26 3:40 ` Weihang Li [this message]
2020-03-26 3:40 ` [PATCH for-next 2/3] RDMA/hns: Reduce the maximum number of extend SGE per WQE Weihang Li
2020-03-26 3:40 ` [PATCH for-next 3/3] RDMA/hns: Modify the mask of QP number for CQE of hip08 Weihang Li
2020-03-29 14:09 ` [PATCH for-next 0/3] RDMA/hns: Update some configurations related to hardware Jason Gunthorpe
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