Re: [RFC PATCH V2 for-next] RDMA/hns: Add UD support for hip08

[Doug Ledford <dledford@redhat.com>]

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On Mon, 2019-10-21 at 22:20 +0800, oulijun wrote:
> 在 2019/10/21 22:13, Jason Gunthorpe 写道:
> > On Sat, Oct 19, 2019 at 04:46:12PM +0800, Lijun Ou wrote:
> > > index bd78ff9..722cc5f 100644
> > > +++ b/drivers/infiniband/hw/hns/hns_roce_qp.c
> > > @@ -377,6 +377,10 @@ static int hns_roce_set_user_sq_size(struct
> > > hns_roce_dev *hr_dev,
> > >  		hr_qp->sge.sge_cnt = roundup_pow_of_two(hr_qp-
> > > >sq.wqe_cnt *
> > >  							(hr_qp-
> > > >sq.max_gs - 2));
> > >  
> > > +	if (hr_qp->ibqp.qp_type == IB_QPT_UD)
> > > +		hr_qp->sge.sge_cnt = roundup_pow_of_two(hr_qp-
> > > >sq.wqe_cnt *
> > > +						       hr_qp-
> > > >sq.max_gs);
> > > +
> > >  	if ((hr_qp->sq.max_gs > 2) && (hr_dev->pci_dev->revision ==
> > > 0x20)) {
> > >  		if (hr_qp->sge.sge_cnt > hr_dev->caps.max_extend_sg) {
> > >  			dev_err(hr_dev->dev,
> > > @@ -1022,6 +1026,9 @@ struct ib_qp *hns_roce_create_qp(struct
> > > ib_pd *pd,
> > >  	int ret;
> > >  
> > >  	switch (init_attr->qp_type) {
> > > +	case IB_QPT_UD:
> > > +		if (!capable(CAP_NET_RAW))
> > > +			return -EPERM;
> > This needs a big comment explaining why this HW requires it.
> > 
> > Jason
> > 
> Add the detail comments for HW limit?

I can add those comments while taking the pactch.  Plus we need to add a
fallthrough annotation at the same place.  I'll fix it up and unfreeze
the hns queue.

-- 
Doug Ledford <dledford@redhat.com>
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