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virtio_net: Sync rss config to device when virtnet_probe

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BugLink: https://bugs.launchpad.net/bugs/2100292

[ Upstream commit dc749b7b06082ccaacc602e724445da19cd03e9f ]

During virtnet_probe, default rss configuration is initialized, but was
not committed to the device. This patch fix this by sending rss command
after device ready in virtnet_probe. Otherwise, the actual rss
configuration used by device can be different with that read by user
from driver, which may confuse the user.

If the command committing fails, driver rss will be disabled.

Fixes: c7114b1249 ("drivers/net/virtio_net: Added basic RSS support.")
Signed-off-by: Philo Lu <lulie@linux.alibaba.com>
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Joe Damato <jdamato@fastly.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[koichiroden: adjusted context due to missing commit:
f8befdb21be0 ("virtio_net: Remove rtnl lock protection of command buffers")]
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Philo Lu
2025-02-26 22:49:14 +09:00
committed by Stefan Bader
parent a3d95bf7c4
commit 1cb97d19a1
1 changed files with 9 additions and 0 deletions
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drivers/net/virtio_net.c
+9
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@@ -4898,6 +4898,15 @@ static int virtnet_probe(struct virtio_device *vdev)
virtio_device_ready(vdev);
if (vi->has_rss || vi->has_rss_hash_report) {
if (!virtnet_commit_rss_command(vi)) {
dev_warn(&vdev->dev, "RSS disabled because committing failed.\n");
dev->hw_features &= ~NETIF_F_RXHASH;
vi->has_rss_hash_report = false;
vi->has_rss = false;
}
}
_virtnet_set_queues(vi, vi->curr_queue_pairs);
/* a random MAC address has been assigned, notify the device.