From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Cornelia Huck <cohuck@redhat.com>,
Andy Shevchenko <andy@infradead.org>,
Darren Hart <dvhart@infradead.org>,
Vadim Pasternak <vadimp@mellanox.com>,
Platform Driver <platform-driver-x86@vger.kernel.org>
Subject: Re: [PATCH v3 18/38] mlxbf-tmfifo: sparse tags for config access
Date: Wed, 5 Aug 2020 17:24:53 +0300 [thread overview]
Message-ID: <CAHp75Vfyjxegi8EtNqVZLVUDzR_0WOJQVmJFoJi4DFxDgNRG-g@mail.gmail.com> (raw)
In-Reply-To: <20200805134226.1106164-19-mst@redhat.com>
On Wed, Aug 5, 2020 at 4:44 PM Michael S. Tsirkin <mst@redhat.com> wrote:
>
> mlxbf-tmfifo accesses config space using native types -
> which works for it since the legacy virtio native types.
>
> This will break if it ever needs to support modern virtio,
> so with new tags previously introduced for virtio net config,
> sparse now warns for this in drivers.
>
> Since this is a legacy only device, fix it up using
> virtio_legacy_is_little_endian for now.
>
> No functional changes.
>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> Acked-by: Cornelia Huck <cohuck@redhat.com>
> ---
> drivers/platform/mellanox/mlxbf-tmfifo.c | 13 ++++++++++---
> 1 file changed, 10 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/platform/mellanox/mlxbf-tmfifo.c b/drivers/platform/mellanox/mlxbf-tmfifo.c
> index 5739a9669b29..bbc4e71a16ff 100644
> --- a/drivers/platform/mellanox/mlxbf-tmfifo.c
> +++ b/drivers/platform/mellanox/mlxbf-tmfifo.c
> @@ -625,7 +625,10 @@ static void mlxbf_tmfifo_rxtx_header(struct mlxbf_tmfifo_vring *vring,
> vdev_id = VIRTIO_ID_NET;
> hdr_len = sizeof(struct virtio_net_hdr);
> config = &fifo->vdev[vdev_id]->config.net;
> - if (ntohs(hdr.len) > config->mtu +
> + /* A legacy-only interface for now. */
> + if (ntohs(hdr.len) >
> + __virtio16_to_cpu(virtio_legacy_is_little_endian(),
> + config->mtu) +
> MLXBF_TMFIFO_NET_L2_OVERHEAD)
> return;
> } else {
> @@ -1231,8 +1234,12 @@ static int mlxbf_tmfifo_probe(struct platform_device *pdev)
>
> /* Create the network vdev. */
> memset(&net_config, 0, sizeof(net_config));
> - net_config.mtu = ETH_DATA_LEN;
> - net_config.status = VIRTIO_NET_S_LINK_UP;
> +
> + /* A legacy-only interface for now. */
> + net_config.mtu = __cpu_to_virtio16(virtio_legacy_is_little_endian(),
> + ETH_DATA_LEN);
> + net_config.status = __cpu_to_virtio16(virtio_legacy_is_little_endian(),
> + VIRTIO_NET_S_LINK_UP);
> mlxbf_tmfifo_get_cfg_mac(net_config.mac);
> rc = mlxbf_tmfifo_create_vdev(dev, fifo, VIRTIO_ID_NET,
> MLXBF_TMFIFO_NET_FEATURES, &net_config,
> --
> MST
>
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2020-08-05 20:06 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-05 13:43 [PATCH v3 00/38] virtio: config space endian-ness cleanup Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 01/38] virtio_balloon: fix sparse warning Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 02/38] virtio_ring: sparse warning fixup Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 03/38] virtio: allow __virtioXX, __leXX in config space Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 04/38] virtio_9p: correct tags for config space fields Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 05/38] virtio_balloon: " Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 06/38] virtio_blk: " Michael S. Tsirkin
2020-08-05 14:24 ` Stefano Garzarella
2020-08-05 13:43 ` [PATCH v3 07/38] virtio_console: " Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 08/38] virtio_crypto: " Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 09/38] virtio_fs: " Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 10/38] virtio_gpu: " Michael S. Tsirkin
2020-08-07 11:22 ` Gerd Hoffmann
2020-08-05 13:43 ` [PATCH v3 11/38] virtio_input: " Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 12/38] virtio_iommu: " Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 13/38] virtio_mem: " Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 14/38] virtio_net: " Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 15/38] virtio_pmem: " Michael S. Tsirkin
2020-08-05 13:43 ` [PATCH v3 16/38] virtio_scsi: " Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 17/38] virtio_config: disallow native type fields Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 18/38] mlxbf-tmfifo: sparse tags for config access Michael S. Tsirkin
2020-08-05 14:24 ` Andy Shevchenko [this message]
2020-08-05 13:44 ` [PATCH v3 19/38] vdpa: make sure set_features is invoked for legacy Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 20/38] vhost/vdpa: switch to new helpers Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 21/38] virtio_vdpa: legacy features handling Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 22/38] vdpa_sim: fix endian-ness of config space Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 23/38] virtio_config: cread/write cleanup Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 24/38] virtio_config: rewrite using _Generic Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 25/38] virtio_config: disallow native type fields (again) Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 26/38] virtio_config: LE config space accessors Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 27/38] virtio_caif: correct tags for config space fields Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 28/38] virtio_config: add virtio_cread_le_feature Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 29/38] virtio_balloon: use LE config space accesses Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 30/38] virtio_input: convert to LE accessors Michael S. Tsirkin
2020-08-19 5:59 ` Gerd Hoffmann
2020-08-05 13:44 ` [PATCH v3 31/38] virtio_fs: " Michael S. Tsirkin
2020-08-06 17:28 ` Vivek Goyal
2020-08-05 13:44 ` [PATCH v3 32/38] virtio_crypto: " Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 33/38] virtio_pmem: " Michael S. Tsirkin
2020-08-07 20:05 ` Ira Weiny
2020-08-05 13:44 ` [PATCH v3 34/38] drm/virtio: " Michael S. Tsirkin
2020-08-07 11:22 ` Gerd Hoffmann
2020-08-05 13:44 ` [PATCH v3 35/38] virtio_mem: " Michael S. Tsirkin
2020-08-10 7:57 ` David Hildenbrand
2020-08-05 13:44 ` [PATCH v3 36/38] virtio-iommu: " Michael S. Tsirkin
2020-08-05 13:44 ` [PATCH v3 37/38] virtio_config: drop LE option from config space Michael S. Tsirkin
2020-08-05 13:45 ` [PATCH v3 38/38] virtio_net: use LE accessors for speed/duplex Michael S. Tsirkin
2020-08-05 13:59 ` Cornelia Huck
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