linux-kernel - Re: [PATCH] RDMA/rxe: Fix wrong port_cap

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Date:   Mon, 6 Sep 2021 16:59:30 +0800
From:   Zhu Yanjun <zyjzyj2000@...il.com>
To:     Junji Wei <weijunji@...edance.com>
Cc:     Doug Ledford <dledford@...hat.com>, Jason Gunthorpe <jgg@...pe.ca>,
        RDMA mailing list <linux-rdma@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, xieyongji@...edance.com
Subject: Re: [PATCH] RDMA/rxe: Fix wrong port_cap_flags

On Mon, Sep 6, 2021 at 3:53 PM Junji Wei <weijunji@...edance.com> wrote:
>
>
> > On Sep 6, 2021, at 3:21 PM, Zhu Yanjun <zyjzyj2000@...il.com> wrote:
> >
> > On Tue, Aug 31, 2021 at 4:32 PM Junji Wei <weijunji@...edance.com> wrote:
> >>
> >> The port->attr.port_cap_flags should be set to enum
> >> ib_port_capability_mask_bits in ib_mad.h,
> >> not RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP.
> >>
> >> Signed-off-by: Junji Wei <weijunji@...edance.com>
> >> ---
> >> drivers/infiniband/sw/rxe/rxe_param.h | 2 +-
> >> 1 file changed, 1 insertion(+), 1 deletion(-)
> >>
> >> diff --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h
> >> index 742e6ec93686..b5a70cbe94aa 100644
> >> --- a/drivers/infiniband/sw/rxe/rxe_param.h
> >> +++ b/drivers/infiniband/sw/rxe/rxe_param.h
> >> @@ -113,7 +113,7 @@ enum rxe_device_param {
> >> /* default/initial rxe port parameters */
> >> enum rxe_port_param {
> >>        RXE_PORT_GID_TBL_LEN            = 1024,
> >> -       RXE_PORT_PORT_CAP_FLAGS         = RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP,
> >> +       RXE_PORT_PORT_CAP_FLAGS         = IB_PORT_CM_SUP,
> >
> > RXE_PORT_PORT_CAP_FLAGS         = IB_PORT_CM_SUP |
> > RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP,
> >
> > Is it better?
> >
> > Zhu Yanjun
>
> I don’t think so.
>
> Because RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP(0x800000)
> means IB_PORT_BOOT_MGMT_SUP(1 << 23) in ib_mad.h.
> RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP should be used for
> port’s core_cap_flags.

Sure. Thanks

Zhu Yanjun

>
> >
> >>        RXE_PORT_MAX_MSG_SZ             = 0x800000,
> >>        RXE_PORT_BAD_PKEY_CNTR          = 0,
> >>        RXE_PORT_QKEY_VIOL_CNTR         = 0,
> >> --
> >> 2.30.1 (Apple Git-130)
> >>
>