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Message-ID: <CACGkMEv+LiT_pH9Km5_OW3EpdOoh7ifM85KwLog570hPAQBsqQ@mail.gmail.com>
Date:   Wed, 23 Nov 2022 13:50:09 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     David Ahern <dsahern@...nel.org>
Cc:     netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        si-wei.liu@...cle.com, mst@...hat.com, eperezma@...hat.com,
        lingshan.zhu@...el.com, elic@...dia.com
Subject: Re: [PATCH V2] vdpa: allow provisioning device features

On Wed, Nov 23, 2022 at 3:53 AM David Ahern <dsahern@...nel.org> wrote:
>
> On 11/16/22 8:33 PM, Jason Wang wrote:
> > diff --git a/vdpa/include/uapi/linux/vdpa.h b/vdpa/include/uapi/linux/vdpa.h
> > index 94e4dad1..7c961991 100644
> > --- a/vdpa/include/uapi/linux/vdpa.h
> > +++ b/vdpa/include/uapi/linux/vdpa.h
> > @@ -51,6 +51,7 @@ enum vdpa_attr {
> >       VDPA_ATTR_DEV_QUEUE_INDEX,              /* u32 */
> >       VDPA_ATTR_DEV_VENDOR_ATTR_NAME,         /* string */
> >       VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,        /* u64 */
> > +     VDPA_ATTR_DEV_FEATURES,                 /* u64 */
> >
> >       /* new attributes must be added above here */
> >       VDPA_ATTR_MAX,
>
> this header file already has:
>         ...
>         VDPA_ATTR_DEV_QUEUE_INDEX,              /* u32 */
>         VDPA_ATTR_DEV_VENDOR_ATTR_NAME,         /* string */
>         VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,        /* u64 */
>
>         VDPA_ATTR_DEV_FEATURES,                 /* u64 */
>
>         /* virtio features that are supported by the vDPA device */
>         VDPA_ATTR_VDPA_DEV_SUPPORTED_FEATURES,  /* u64 */
>
>         /* new attributes must be added above here */
>         VDPA_ATTR_MAX,
>
> in which case your diff is not needed. More importantly it raises
> questions about the status of the uapi file (is it correct as is or is
> an update needed) and which tree you are creating patches against?

I'm using git://git.kernel.org/pub/scm/network/iproute2/iproute2 main.
But I don't pull the new codes before sending the patches. Will fix
this.

>
> > @@ -615,8 +640,9 @@ static int cmd_mgmtdev(struct vdpa *vdpa, int argc, char **argv)
> >  static void cmd_dev_help(void)
> >  {
> >       fprintf(stderr, "Usage: vdpa dev show [ DEV ]\n");
> > -     fprintf(stderr, "       vdpa dev add name NAME mgmtdev MANAGEMENTDEV [ mac MACADDR ] [ mtu MTU ]\n");
> > -     fprintf(stderr, "                                                    [ max_vqp MAX_VQ_PAIRS ]\n");
> > +     fprintf(stderr, "       vdpa dev add name NAME mgmtdevMANAGEMENTDEV [ device_features DEVICE_FEATURES]\n");
>
> lost the space between mgmtdev and MANAGEMENTDEV

Will fix it.

Thanks

>
>
> > +     fprintf(stderr, "                                                   [ mac MACADDR ] [ mtu MTU ]\n");
> > +     fprintf(stderr, "                                                   [ max_vqp MAX_VQ_PAIRS ]\n");
> >       fprintf(stderr, "       vdpa dev del DEV\n");
> >       fprintf(stderr, "Usage: vdpa dev config COMMAND [ OPTIONS ]\n");
> >       fprintf(stderr, "Usage: vdpa dev vstats COMMAND\n");
>

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