linux-kernel - Re: [RFC PATCH v7 15/22] virtio/vsock: SEQPACKET support feature bit

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Date:   Thu, 25 Mar 2021 19:04:15 +0300
From:   Arseny Krasnov <arseny.krasnov@...persky.com>
To:     Stefano Garzarella <sgarzare@...hat.com>
CC:     Stefan Hajnoczi <stefanha@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Jorgen Hansen <jhansen@...are.com>,
        Andra Paraschiv <andraprs@...zon.com>,
        Norbert Slusarek <nslusarek@....net>,
        Colin Ian King <colin.king@...onical.com>,
        Alexander Popov <alex.popov@...ux.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stsp2@...dex.ru" <stsp2@...dex.ru>,
        "oxffffaa@...il.com" <oxffffaa@...il.com>
Subject: Re: [RFC PATCH v7 15/22] virtio/vsock: SEQPACKET support feature bit


On 25.03.2021 13:26, Stefano Garzarella wrote:
> On Tue, Mar 23, 2021 at 04:13:49PM +0300, Arseny Krasnov wrote:
>> This adds new virtio vsock specific feature bit which means
>> SOCK_SEQPACKET support. Guest negotiates this bit with vhost,
>> thus checking that vhost side supports SEQPACKET.
>>
>> Signed-off-by: Arseny Krasnov <arseny.krasnov@...persky.com>
>> ---
>> include/uapi/linux/virtio_vsock.h | 3 +++
>> 1 file changed, 3 insertions(+)
> Since you have this patch, I think you can generalize the title, update 
> the description, and merge here the changes I mentioned in patch 11/22 
> about changes of include/uapi/linux/virtio_vsock.h.
>
> So you can have a single patch with the new virtio-spec defines and 
> structs related to SEQPACKET, of course then we move it before patch 11.
>
> What do you think?
Ok, i'll move all changes related to spec to separate patch
>
> Stefano
>
>> diff --git a/include/uapi/linux/virtio_vsock.h b/include/uapi/linux/virtio_vsock.h
>> index 692f8078cced..619aaebb355a 100644
>> --- a/include/uapi/linux/virtio_vsock.h
>> +++ b/include/uapi/linux/virtio_vsock.h
>> @@ -38,6 +38,9 @@
>> #include <linux/virtio_ids.h>
>> #include <linux/virtio_config.h>
>>
>> +/* The feature bitmap for virtio vsock */
>> +#define VIRTIO_VSOCK_F_SEQPACKET	0	/* SOCK_SEQPACKET supported */
>> +
>> struct virtio_vsock_config {
>> 	__le64 guest_cid;
>> } __attribute__((packed));
>> -- 
>> 2.25.1
>>
>