From: "Michael S. Tsirkin" <mst@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org,
Jason Wang <jasowang@redhat.com>,
Andy Shevchenko <andy@infradead.org>,
Darren Hart <dvhart@infradead.org>,
Vadim Pasternak <vadimp@mellanox.com>,
platform-driver-x86@vger.kernel.org
Subject: [PATCH v2 18/24] mlxbf-tmfifo: sparse tags for config access
Date: Mon, 3 Aug 2020 17:00:01 -0400 [thread overview]
Message-ID: <20200803205814.540410-19-mst@redhat.com> (raw)
In-Reply-To: <20200803205814.540410-1-mst@redhat.com>
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.
Signed-off-by: Michael S. Tsirkin <mst@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
next prev parent reply other threads:[~2020-08-03 21:00 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-03 20:58 [PATCH v2 00/24] virtio: config space endian-ness cleanup Michael S. Tsirkin
2020-08-03 20:58 ` [PATCH v2 01/24] virtio_balloon: fix sparse warning Michael S. Tsirkin
2020-08-03 21:25 ` David Hildenbrand
2020-08-04 14:16 ` Cornelia Huck
2020-08-03 20:58 ` [PATCH v2 02/24] virtio_ring: sparse warning fixup Michael S. Tsirkin
2020-08-04 14:18 ` Cornelia Huck
2020-08-03 20:58 ` [PATCH v2 03/24] virtio: allow __virtioXX, __leXX in config space Michael S. Tsirkin
2020-08-04 14:23 ` Cornelia Huck
2020-08-04 14:28 ` Michael S. Tsirkin
2020-08-05 6:28 ` Jason Wang
2020-08-05 11:45 ` Michael S. Tsirkin
2020-08-06 3:37 ` Jason Wang
2020-08-06 5:58 ` Michael S. Tsirkin
2020-08-07 3:26 ` Jason Wang
2020-08-03 20:58 ` [PATCH v2 04/24] virtio_9p: correct tags for config space fields Michael S. Tsirkin
2020-08-04 14:25 ` Cornelia Huck
2020-08-03 20:58 ` [PATCH v2 05/24] virtio_balloon: " Michael S. Tsirkin
2020-08-03 21:26 ` David Hildenbrand
2020-08-04 14:26 ` Cornelia Huck
2020-08-03 20:58 ` [PATCH v2 06/24] virtio_blk: " Michael S. Tsirkin
2020-08-04 14:29 ` Cornelia Huck
2020-08-03 20:59 ` [PATCH v2 07/24] virtio_console: " Michael S. Tsirkin
2020-08-04 14:31 ` Cornelia Huck
2020-08-03 20:59 ` [PATCH v2 08/24] virtio_crypto: " Michael S. Tsirkin
2020-08-04 14:32 ` Cornelia Huck
2020-08-03 20:59 ` [PATCH v2 09/24] virtio_fs: " Michael S. Tsirkin
2020-08-04 13:36 ` Vivek Goyal
2020-08-04 14:33 ` Cornelia Huck
2020-08-03 20:59 ` [PATCH v2 10/24] virtio_gpu: " Michael S. Tsirkin
2020-08-04 14:34 ` Cornelia Huck
2020-08-03 20:59 ` [PATCH v2 11/24] virtio_input: " Michael S. Tsirkin
2020-08-04 6:01 ` Gerd Hoffmann
2020-08-04 14:35 ` Cornelia Huck
2020-08-03 20:59 ` [PATCH v2 12/24] virtio_iommu: " Michael S. Tsirkin
2020-08-04 8:00 ` Jean-Philippe Brucker
2020-08-04 14:36 ` Cornelia Huck
2020-08-03 20:59 ` [PATCH v2 13/24] virtio_mem: " Michael S. Tsirkin
2020-08-03 21:23 ` David Hildenbrand
2020-08-04 14:37 ` Cornelia Huck
2020-08-03 20:59 ` [PATCH v2 14/24] virtio_net: " Michael S. Tsirkin
2020-08-04 14:44 ` Cornelia Huck
2020-08-05 13:26 ` Michael S. Tsirkin
2020-08-03 20:59 ` [PATCH v2 15/24] virtio_pmem: " Michael S. Tsirkin
2020-08-04 14:46 ` Cornelia Huck
2020-08-03 20:59 ` [PATCH v2 16/24] virtio_scsi: " Michael S. Tsirkin
2020-08-04 14:48 ` Cornelia Huck
2020-08-03 20:59 ` [PATCH v2 17/24] virtio_config: disallow native type fields Michael S. Tsirkin
2020-08-04 14:50 ` Cornelia Huck
2020-08-05 13:29 ` Michael S. Tsirkin
2020-08-03 21:00 ` Michael S. Tsirkin [this message]
2020-08-04 14:56 ` [PATCH v2 18/24] mlxbf-tmfifo: sparse tags for config access Cornelia Huck
2020-08-05 13:29 ` Michael S. Tsirkin
2020-08-03 21:00 ` [PATCH v2 19/24] vdpa: make sure set_features in invoked for legacy Michael S. Tsirkin
2020-08-05 6:14 ` Jason Wang
2020-08-05 11:40 ` Michael S. Tsirkin
2020-08-06 3:23 ` Jason Wang
2020-08-06 5:53 ` Michael S. Tsirkin
2020-08-06 7:27 ` Jason Wang
2020-08-06 10:00 ` Michael S. Tsirkin
2020-08-07 3:00 ` Jason Wang
2020-08-03 21:00 ` [PATCH v2 20/24] vhost/vdpa: switch to new helpers Michael S. Tsirkin
2020-08-03 21:00 ` [PATCH v2 21/24] virtio_vdpa: legacy features handling Michael S. Tsirkin
2020-08-03 21:00 ` [PATCH v2 22/24] vdpa_sim: fix endian-ness of config space Michael S. Tsirkin
2020-08-05 6:21 ` Jason Wang
2020-08-05 11:44 ` Michael S. Tsirkin
2020-08-05 12:06 ` Michael S. Tsirkin
2020-08-06 3:23 ` Jason Wang
2020-08-03 21:00 ` [PATCH v2 23/24] virtio_config: cread/write cleanup Michael S. Tsirkin
2020-08-03 21:00 ` [PATCH v2 24/24] virtio_config: rewrite using _Generic Michael S. Tsirkin
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