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| author | Lijun Ou <oulijun@huawei.com> | 2016-09-20 17:07:05 +0100 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-10-03 11:43:15 -0400 |
| commit | c6c3bfea82be60c3d60144b980ea25f1252a6eb5 (patch) | |
| tree | 4398afc8ab8a9c4ac1ad292c34ea5914223da845 /drivers/infiniband/hw | |
| parent | 07182fa77b3a64962aca12e8c0006646316bd26d (diff) | |
| download | op-kernel-dev-c6c3bfea82be60c3d60144b980ea25f1252a6eb5.zip op-kernel-dev-c6c3bfea82be60c3d60144b980ea25f1252a6eb5.tar.gz | |
IB/hns: The Ack timeout need a lower limit value
The Ack timeout of qpc need a lower limit value,otherwise
the read performance will be very lower.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Dongdong Huang(Donald) <hdd.huang@huawei.com>
Reviewed-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c index 1205d1a..5110a18 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c @@ -2410,10 +2410,19 @@ static int hns_roce_v1_m_qp(struct ib_qp *ibqp, const struct ib_qp_attr *attr, QP_CONTEXT_QPC_BYTES_156_RETRY_COUNT_INIT_M, QP_CONTEXT_QPC_BYTES_156_RETRY_COUNT_INIT_S, attr->retry_cnt); - roce_set_field(context->qpc_bytes_156, - QP_CONTEXT_QPC_BYTES_156_ACK_TIMEOUT_M, - QP_CONTEXT_QPC_BYTES_156_ACK_TIMEOUT_S, - attr->timeout); + if (attr->timeout < 0x12) { + dev_info(dev, "ack timeout value(0x%x) must bigger than 0x12.\n", + attr->timeout); + roce_set_field(context->qpc_bytes_156, + QP_CONTEXT_QPC_BYTES_156_ACK_TIMEOUT_M, + QP_CONTEXT_QPC_BYTES_156_ACK_TIMEOUT_S, + 0x12); + } else { + roce_set_field(context->qpc_bytes_156, + QP_CONTEXT_QPC_BYTES_156_ACK_TIMEOUT_M, + QP_CONTEXT_QPC_BYTES_156_ACK_TIMEOUT_S, + attr->timeout); + } roce_set_field(context->qpc_bytes_156, QP_CONTEXT_QPC_BYTES_156_RNR_RETRY_COUNT_INIT_M, QP_CONTEXT_QPC_BYTES_156_RNR_RETRY_COUNT_INIT_S, |
