From: Laurent Vivier <lvivier@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: "Cindy Lu" <lulu@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
netdev@vger.kernel.org,
virtualization@lists.linux-foundation.org,
"Eugenio Pérez" <eperezma@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
"Eli Cohen" <elic@nvidia.com>,
"Gautam Dawar" <gautam.dawar@xilinx.com>
Subject: [PATCH 3/4] vdpa_sim_net: don't always set VIRTIO_NET_F_MAC
Date: Sun, 22 Jan 2023 11:05:25 +0100 [thread overview]
Message-ID: <20230122100526.2302556-4-lvivier@redhat.com> (raw)
In-Reply-To: <20230122100526.2302556-1-lvivier@redhat.com>
if vdpa dev command doesn't set a MAC address, don't report
VIRTIO_NET_F_MAC.
As vdpa_sim_net sets VIRTIO_NET_F_MAC without setting the MAC address,
virtio-net doesn't set a random one and the address appears to be the
zero MAC address.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
---
drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
index 584b975a98a7..28e858659b85 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
@@ -257,6 +257,12 @@ static int vdpasim_net_dev_add(struct vdpa_mgmt_dev *mdev, const char *name,
dev_attr.work_fn = vdpasim_net_work;
dev_attr.buffer_size = PAGE_SIZE;
+ /* if vdpa dev doesn't provide a MAC address,
+ * don't report we have one
+ */
+ if (!(config->mask & (1 << VDPA_ATTR_DEV_NET_CFG_MACADDR)))
+ dev_attr.supported_features &= ~(1ULL << VIRTIO_NET_F_MAC);
+
simdev = vdpasim_create(&dev_attr, config);
if (IS_ERR(simdev))
return PTR_ERR(simdev);
--
2.39.0
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next prev parent reply other threads:[~2023-01-22 10:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-22 10:05 [PATCH 0/4] virtio_net: vdpa: update MAC address when it is generated by virtio-net Laurent Vivier
2023-01-22 10:05 ` [PATCH 1/4] virtio_net: notify MAC address change on device initialization Laurent Vivier
[not found] ` <07a24753-767b-4e1e-2bcf-21ec04bc044a@nvidia.com>
2023-01-23 9:52 ` Laurent Vivier
[not found] ` <20230123193114.56aaec3a@kernel.org>
2023-01-24 7:19 ` Laurent Vivier
2023-01-22 10:05 ` [PATCH 2/4] virtio_net: add a timeout in virtnet_send_command() Laurent Vivier
2023-01-22 10:05 ` Laurent Vivier [this message]
2023-01-22 10:05 ` [PATCH 4/4] virtio_net: fix virtnet_send_command() with vdpa_sim_net Laurent Vivier
2023-01-22 10:23 ` [PATCH 0/4] virtio_net: vdpa: update MAC address when it is generated by virtio-net Michael S. Tsirkin
2023-01-23 9:25 ` Laurent Vivier
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