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[79.178.123.8]) by smtp.gmail.com with ESMTPSA id g18sm2877887wru.27.2020.08.05.06.26.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Aug 2020 06:26:50 -0700 (PDT) Date: Wed, 5 Aug 2020 09:26:48 -0400 From: "Michael S. Tsirkin" To: Cornelia Huck Cc: linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org Subject: Re: [PATCH v2 14/24] virtio_net: correct tags for config space fields Message-ID: <20200805092621-mutt-send-email-mst@kernel.org> References: <20200803205814.540410-1-mst@redhat.com> <20200803205814.540410-15-mst@redhat.com> <20200804164444.5174452d.cohuck@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200804164444.5174452d.cohuck@redhat.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 04, 2020 at 04:44:44PM +0200, Cornelia Huck wrote: > On Mon, 3 Aug 2020 16:59:37 -0400 > "Michael S. Tsirkin" wrote: > > > Tag config space fields as having virtio endian-ness. > > > > Signed-off-by: Michael S. Tsirkin > > --- > > include/uapi/linux/virtio_net.h | 8 ++++---- > > 1 file changed, 4 insertions(+), 4 deletions(-) > > > > diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h > > index 19d23e5baa4e..27d996f29dd1 100644 > > --- a/include/uapi/linux/virtio_net.h > > +++ b/include/uapi/linux/virtio_net.h > > @@ -87,19 +87,19 @@ struct virtio_net_config { > > /* The config defining mac address (if VIRTIO_NET_F_MAC) */ > > __u8 mac[ETH_ALEN]; > > /* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */ > > - __u16 status; > > + __virtio16 status; > > /* Maximum number of each of transmit and receive queues; > > * see VIRTIO_NET_F_MQ and VIRTIO_NET_CTRL_MQ. > > * Legal values are between 1 and 0x8000 > > */ > > - __u16 max_virtqueue_pairs; > > + __virtio16 max_virtqueue_pairs; > > /* Default maximum transmit unit advice */ > > - __u16 mtu; > > + __virtio16 mtu; > > /* > > * speed, in units of 1Mb. All values 0 to INT_MAX are legal. > > * Any other value stands for unknown. > > */ > > - __u32 speed; > > + __virtio32 speed; > > Hm... VIRTIO_NET_F_SPEED_DUPLEX can only be negotiated if VERSION_1 has > also been negotiated; I think this should be __le32? OK APIs for this are in a separate patch. I'll add conversion as a patch on top. > > /* > > * 0x00 - half duplex > > * 0x01 - full duplex