Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Thu, 18 Jul 2019 09:52:41 +0200
From:   Stefano Garzarella <sgarzare@redhat.com>
To:     "Michael S. Tsirkin" <mst@redhat.com>
Cc:     netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        Stefan Hajnoczi <stefanha@redhat.com>,
        "David S. Miller" <davem@davemloft.net>,
        virtualization@lists.linux-foundation.org,
        Jason Wang <jasowang@redhat.com>, kvm@vger.kernel.org
Subject: Re: [PATCH v4 5/5] vsock/virtio: change the maximum packet size
 allowed
Message-ID: <CAGxU2F5ybg1_8VhS=COMnxSKC4AcW4ZagYwNMi==d6-rNPgzsg@mail.gmail.com>
References: <20190717113030.163499-1-sgarzare@redhat.com>
 <20190717113030.163499-6-sgarzare@redhat.com>
 <20190717105703-mutt-send-email-mst@kernel.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20190717105703-mutt-send-email-mst@kernel.org>
User-Agent: NeoMutt/20180716
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Wed, Jul 17, 2019 at 5:00 PM Michael S. Tsirkin <mst@redhat.com> wrote:
>
> On Wed, Jul 17, 2019 at 01:30:30PM +0200, Stefano Garzarella wrote:
> > Since now we are able to split packets, we can avoid limiting
> > their sizes to VIRTIO_VSOCK_DEFAULT_RX_BUF_SIZE.
> > Instead, we can use VIRTIO_VSOCK_MAX_PKT_BUF_SIZE as the max
> > packet size.
> >
> > Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
>
>
> OK so this is kind of like GSO where we are passing
> 64K packets to the vsock and then split at the
> low level.

Exactly, something like that in the Host->Guest path, instead in the
Guest->Host we use the entire 64K packet.

Thanks,
Stefano