linux-kernel - Re: [PATCH for-next 18/20] IB/hns: Update the rq head when modify qp state

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Date:   Thu, 15 Sep 2016 13:12:46 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Salil Mehta <salil.mehta@...wei.com>
Cc:     dledford@...hat.com, xavier.huwei@...wei.com, oulijun@...wei.com,
        yisen.zhuang@...wei.com, xuwei5@...ilicon.com,
        mehta.salil.lnk@...il.com, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org, linuxarm@...wei.com
Subject: Re: [PATCH for-next 18/20] IB/hns: Update the rq head when modify qp
 state

On Fri, Sep 09, 2016 at 06:30:49PM +0800, Salil Mehta wrote:
> From: Lijun Ou <oulijun@...wei.com>
>
> The rq head in qpc was zero will miss the rq wqes which
> have be sent, so here we should take the real value.
>
> Signed-off-by: Lijun Ou <oulijun@...wei.com>
> Reviewed-by:  Wei Hu (Xavier) <xavier.huwei@...wei.com>
> Signed-off-by: Salil Mehta <salil.mehta@...wei.com>
> ---
>  drivers/infiniband/hw/hns/hns_roce_hw_v1.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
> index bdd9453..7a61d7e 100644
> --- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
> +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
> @@ -2266,7 +2266,8 @@ static int hns_roce_v1_m_qp(struct ib_qp *ibqp, const struct ib_qp_attr *attr,
>
>  		roce_set_field(context->qpc_bytes_68,
>  			       QP_CONTEXT_QPC_BYTES_68_RQ_HEAD_M,
> -			       QP_CONTEXT_QPC_BYTES_68_RQ_HEAD_S, 0);
> +			       QP_CONTEXT_QPC_BYTES_68_RQ_HEAD_S,
> +			       hr_qp->rq.head);

Are you sure that it should be list_head and not value?

>  		roce_set_field(context->qpc_bytes_68,
>  			       QP_CONTEXT_QPC_BYTES_68_RQ_CUR_INDEX_M,
>  			       QP_CONTEXT_QPC_BYTES_68_RQ_CUR_INDEX_S, 0);
> --
> 1.7.9.5
>
> --
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